Engineering project profit rapid accounting method and system

Abstract

The invention discloses an engineering project profit rapid accounting method and system, and relates to the technical field of engineering project cost and profit accounting, and the method comprises the steps: constructing a standardized data entry interface, and entering income data, cost data and configuration parameters; associating the owner with the subpackage list by adopting an intelligent matching and manual correction mode, and storing an association result into a list mapping database for reuse; subpackage cost, material cost, cost awareness and tax cost are calculated item by item, the cost supports a flexible awareness rule, and the tax is accurately accounting in a tax distinguishing and calculating mode; summarizing and calculating the total income, the total production cost and the layered profit of the project; and a multi-dimensional report is generated, and real-time dynamic updating after data change is supported. The system comprises corresponding function modules, can achieve rapid and accurate profit accounting, and improves the accounting efficiency and accuracy. The problems of difficulty in list matching, inaccuracy in cost allocation, complexity in tax accounting and low efficiency in an existing accounting mode can be solved.

Description

Technical Field

[0001] This invention relates to the field of engineering project cost and profit accounting technology, specifically to a method and system for rapid profit calculation of engineering projects. Background Technology

[0002] In the process of engineering project management, profit accounting is one of the core links, which is directly related to project decision-making, progress control and final profit assessment. Currently, engineering project profit accounting mostly adopts manual statistics or traditional spreadsheet accounting methods. Staff need to manually sort out various information such as owner's revenue data, subcontracting costs, material costs, equipment rental fees, management fees, etc., and then calculate revenue, costs and profits step by step through formulas.

[0003] The existing accounting method often results in inconsistencies between the owner's list items and the subcontractor's list items, such as different project division granularities and discrepancies in the corresponding list names. Manual matching is difficult, and manual statistics are tedious and prone to omissions, losses, and logical errors. It cannot achieve real-time updates after data changes and is difficult to meet the needs of dynamic project management. Summary of the Invention

[0004] This application provides a method and system for rapid profit calculation in engineering projects, aiming to solve the problems of difficulty in matching bills of quantities, complexity in material cost statistics, inaccurate cost amortization, cumbersome tax calculation, and low efficiency in existing engineering project profit calculation. It provides a method and system for rapid profit calculation in engineering projects, which achieves rapid and accurate profit calculation through standardized data input, intelligent bill of quantities matching, accurate cost allocation, and automatic tax calculation.

[0005] This application provides a method for rapid profit calculation in engineering projects. Includes the following steps: Step 1: Construct a data entry interface to input revenue data, cost data, and configuration parameters. Revenue data includes the owner's list item name, owner's project quantity, and owner's unit price excluding tax. Cost data includes the subcontractor's list item name, subcontractor's unit price excluding tax, subcontractor's project quantity, material name, material's unit price excluding tax, material wastage rate, material usage percentage, total equipment rental amount, various management fees, and other direct costs. Configuration parameters include tax rates, expense amortization rules, and list matching rules. Step 2: Use intelligent matching and manual correction to associate owner list items and subcontractor list items. Intelligent matching includes keyword matching and category matching. Manual correction is used to handle lists that fail intelligent matching or are questionable, and to establish the list association relationship. Step 3: Perform cost itemized calculations, as follows: 1. Subcontract Costs: The cost of each subcontract item is calculated by multiplying the subcontract unit price (excluding tax) by the subcontract quantity. By summing up the costs of each subcontract item, the total subcontract cost for the corresponding owner's bill of quantities can be obtained.

[0006] 2. Material Costs: The actual consumption of a single material is obtained by multiplying the subcontracted work volume, the material usage ratio, and the three factors. The cost of a single material is the product of the actual consumption of the single material and the unit price of the material excluding tax. By summing up the costs of each single material, the total cost of the subcontracted materials can be obtained.

[0007] 3. Tax cost: The tax cost is calculated separately for the revenue side and the cost side. The actual tax cost is the tax on the revenue side minus the deductible tax on the cost side. Step 4: Calculate total revenue, total production cost and profit, S=M×N, where S is the total revenue of the project, M is the owner's project quantity, and N is the owner's unit price excluding tax; L = J + K + H + G, where L is the total production cost of the project, J is the cost of subcontracted items, K is the total cost of subcontracted materials, H is the amortized expense of items, and G is the cost of taxes of items. Q=SL, where Q is the total profit of the project, S is the total revenue of the project, and L is the total production cost of the project; Step 5: Generate accounting reports and support dynamic updates, recalculating all results in real time when data changes.

[0008] Furthermore, in step 2, the list association relationships include three types: one-to-one, one-to-many, and many-to-one. The association results are stored in the list mapping database, which supports modification and reuse.

[0009] Furthermore, in step 3, the amortization base can be selected from any one of the following: subcontracted work volume, subcontracted amount excluding tax, or total material cost, or a custom amortization base can be defined, supporting single-rule amortization or combined-rule amortization.

[0010] Furthermore, in step 3, tax calculation supports both general tax calculation methods and simplified tax calculation methods, and the tax rate can be flexibly configured. Tax costs are simultaneously allocated to each subcontractor list item and owner list item.

[0011] Furthermore, the method for implementing any one of claims 1 to 4 comprises: Data entry module: Receives revenue data, cost data, and configuration parameters, and provides data verification functions; List matching module: performs intelligent matching of owner lists and subcontractor lists, supports manual correction and storage of association relationships; Cost calculation module: includes subcontracting cost calculation unit, material cost calculation unit, expense amortization unit, and tax calculation unit, which respectively perform corresponding cost and tax accounting; Profit Calculation Module: Summarizes data and calculates total project revenue, total production cost, total profit, and itemized profit; Data storage and output module: Stores various types of data, generates standardized reports, and supports multi-format output; Dynamic update module: Monitors data changes, triggers recalculation and updates the results.

[0012] Furthermore, in step 2, the keyword extraction dimensions for intelligent matching include project location, process type, and material name. The category matching dimensions are divided according to the professional category to which the list belongs, and the professional category at least covers the fields of civil engineering, installation, decoration, municipal engineering, and electrical engineering.

[0013] Furthermore, in step 3.2, the planned material usage for the various materials corresponding to the single subcontracting list is allocated according to the preset usage ratio. The material usage ratio can be customized and adjusted according to the subcontracting process requirements, and the usage allocation for a single material to correspond to multiple subcontracting list items is supported.

[0014] Furthermore, in step 3.4, the deductible tax on the cost side is divided into deductible tax rates according to cost type. Subcontracting costs correspond to a 9% deductible tax rate, while material costs and equipment rental costs correspond to a 13% deductible tax rate. The system automatically calculates the deductible tax amount by splitting the cost amount.

[0015] Furthermore, the accounting reports generated in step 5 support hierarchical display by owner list items, subcontractor list items, and professional category dimensions. The reports must include at least revenue details, cost composition, expense amortization details, tax calculation results, and profit breakdown data, and support Excel export and real-time visualization.

[0016] Furthermore, the data entry module provides a modular entry interface with preset templates for commonly used list items, material types, and cost items. It supports one-click data import from Excel templates and also has a data validation function that provides alerts for abnormal values ​​in quantities, unit prices, and tax rates.

[0017] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: By linking owner and subcontractor lists through intelligent matching and manual correction, the association results are stored in a list mapping database for reuse, generating multi-dimensional reports and supporting real-time dynamic updates after data changes. This solves the problems of difficult list matching, complex material cost statistics, inaccurate cost amortization, cumbersome tax calculation, and low efficiency in the profit accounting of existing engineering projects. It provides a method and system for rapid profit accounting of engineering projects, achieving rapid and accurate profit accounting through standardized data input, intelligent list matching, accurate cost allocation, and automatic tax calculation. Detailed Implementation

[0018] To facilitate understanding of the invention, it may be implemented in many different forms and is not limited to the embodiments described herein; rather, these embodiments are provided so that a more thorough and complete understanding of the disclosure of the invention may be achieved.

[0019] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] This application proposes a method and system for rapid profit calculation in engineering projects, including the following steps: Step 1: Construct a data entry interface to input revenue data, cost data, and configuration parameters. Revenue data includes the owner's list item name, owner's project quantity, and owner's unit price excluding tax. Cost data includes the subcontractor's list item name, subcontractor's unit price excluding tax, subcontractor's project quantity, material name, material's unit price excluding tax, material wastage rate, material usage percentage, total equipment rental amount, various management fees, and other direct costs. Configuration parameters include tax rates, expense amortization rules, and list matching rules. Step 2: The system uses a combination of intelligent matching and manual correction to link owner list items and subcontractor list items. Intelligent matching includes keyword matching and category matching, while manual correction is used to handle items that fail to match or are questionable. This establishes the linking relationship between the lists. By combining intelligent matching and manual correction, the accuracy and efficiency of list linking can be effectively improved. The system first automatically matches owner list items and subcontractor list items based on a preset algorithm. During the matching process, keyword similarity, category attributes, and other relevant features are comprehensively considered. For list items that fail to match or whose matching results are uncertain, the system moves to the manual correction stage, where operators make judgments and adjustments based on the actual situation. Step 3: Perform cost itemized calculations, as follows: 1. Subcontract Costs: The cost of each subcontract item is calculated by multiplying the subcontract unit price (excluding tax) by the subcontract quantity. By summing up the costs of each subcontract item, the total subcontract cost for the corresponding owner's bill of quantities can be obtained.

[0022] 2. Material Costs: The actual consumption of a single material is obtained by multiplying the subcontracted work volume, the material usage ratio, and the three factors. The cost of a single material is the product of the actual consumption of the single material and the unit price of the material excluding tax. By summing up the costs of each single material, the total cost of the subcontracted materials can be obtained.

[0023] 4. Tax cost: The tax cost is calculated separately for the revenue side and the cost side. The actual tax cost is the tax on the revenue side minus the deductible tax on the cost side. Step 4: Calculate total revenue, total production cost and profit. The formula for calculating total project revenue is S=M×N, where S is total project revenue, M is the owner's project quantity, and N is the owner's unit price excluding tax. The formula for calculating the total production cost of the project is L=J+K+H+G, where L is the total production cost of the project, J is the cost of subcontracted items, K is the total cost of materials for subcontracted items, H is the amortized expenses of items, and G is the cost of taxes of items. The formula for calculating the total profit of a project is Q=SL, where Q is the total profit of the project, S is the total revenue of the project, and L is the total production cost of the project. Step 5: Generate accounting reports and support dynamic updates, recalculating all results in real time when data changes.

[0024] In some embodiments, the actual cost of each material is calculated based on the material name, the unit price excluding tax, the material loss rate, and the proportion of material usage. The costs of all materials are then summarized to obtain the total material cost of the corresponding owner's list item. The material cost includes equipment rental costs, management fees, and other direct costs. Equipment rental costs: Based on the total equipment rental amount, the costs are allocated to each owner's item according to the amortization ratio rules to ensure a reasonable allocation of equipment rental costs. During the accounting process, the amortization ratio needs to be dynamically adjusted based on the actual project duration and equipment usage frequency to improve the accuracy of cost allocation. At the same time, considering the differences in usage scenarios and times for different equipment, weighting coefficients can be introduced to optimize the basic amortization rules. In addition, the allocation results of equipment rental costs should match the project progress to ensure that the cost data at each stage truly reflects the actual expenditure and provides a reliable basis for subsequent decision-making.

[0025] Management fees and other direct costs: Allocate the various management fees and other direct costs to the corresponding owner list items according to preset rules to comprehensively reflect the overall cost of the project. During the allocation process, the allocation rules should be flexibly adjusted based on the specific characteristics and actual needs of the project. The allocation weight can be determined according to the workload or resource consumption ratio of each department to improve the rationality of cost allocation. At the same time, for different types of direct costs, such as labor costs and transportation costs, corresponding allocation strategies should be formulated to ensure that each cost can be accurately collected into the corresponding owner list item. In addition, to improve the transparency and traceability of accounting, the system needs to record detailed data of each allocation step and support querying and exporting at any time for subsequent auditing and analysis.

[0026] In some embodiments, in practical applications, the system can flexibly adjust various parameters and rules according to the specific needs of the project. In the process of allocating equipment rental costs, users can customize weighting coefficients and amortization ratios based on the usage frequency of different equipment, the construction period, and the project progress requirements.

[0027] In some embodiments, the generated accounting reports support hierarchical display by owner list items, subcontractor list items, and professional category dimensions. The reports include at least revenue details, cost composition, expense amortization details, tax calculation results, and profit breakdown data. They also support Excel export and real-time visualization. Users can quickly locate specific data ranges by customizing filter conditions, thereby improving the efficiency of data analysis.

[0028] In some embodiments, the system also provides a variety of chart formats to help users understand data distribution and trends more intuitively. In addition, to meet the personalized needs of different users, the report interface supports flexible configuration. Users can adjust the display order and content layout according to the key indicators they are interested in. During real-time visualization, the system can dynamically respond to data updates to ensure that the information obtained by users is always consistent with the latest accounting results.

[0029] In some embodiments, the list association relationships in step 2 include three types: one-to-one, one-to-many, and many-to-one. The association results are stored in the list mapping database, which supports modification and reuse. In practical applications, the list mapping database is designed with an efficient indexing mechanism to ensure that the query speed of the association relationships can meet the needs of large-scale engineering projects. At the same time, the system also provides a conflict detection function. When a user tries to modify an existing list association, it will automatically prompt the range of accounting data that may be affected and provide adjustment suggestions.

[0030] In some embodiments, to further enhance ease of use, a visual relationship graph is added to the interface. Users can intuitively view and manage complex list relationship networks in a graphical way. The visual relationship graph supports a variety of interactive operations, such as dragging nodes to adjust relationships, clicking nodes to view detailed information, and quickly locating specific lists through search.

[0031] In some embodiments, to ensure data consistency and integrity, each modification to the association map triggers a real-time verification mechanism to automatically detect potential logical errors.

[0032] In some embodiments, the amortization base can be selected from any one of the following: subcontracted work volume, subcontracted amount excluding tax, and total material cost, or a custom amortization base can be defined. Single rule amortization or combined rule amortization is supported. In practical applications, the system will automatically calculate the relevant costs based on the amortization base selected by the user and generate a detailed amortization report. In order to meet the accounting needs of different projects, the user can make adjustments according to the specific situation. When combined rule amortization is selected, the system will allocate the proportion of each base according to the preset weights and supports manual fine-tuning to ensure the accuracy of the results.

[0033] In some embodiments, tax calculation supports both general tax calculation methods and simplified tax calculation methods. Tax rates can be flexibly configured, and tax costs are simultaneously allocated to each subcontractor list item and owner list item. The system will automatically calculate the tax payable according to the selected tax calculation method and allocate the tax cost to the corresponding list item according to preset rules. In actual operation, users can adjust the tax rate parameters according to the tax policies of the project location or the contract agreement to ensure that the calculation results are consistent with the actual situation. The tax calculation formula is E=PI, where E is the actual tax payable, P is the output tax, and I is the input tax. The output tax amount is the owner's total revenue excluding tax, R × the applicable tax rate, T. The tax rate for engineering projects is usually 9%, where R is the owner's total revenue excluding tax and T is the tax rate. Input tax: The deduction rate varies according to cost type. Subcontracting costs are subject to a 9% deduction rate, while material and equipment leasing costs are subject to a 13% deduction rate. Deductions are made based on valid tax deduction vouchers, such as VAT invoices.

[0034] This method is used for municipal roads, electrical installations, and residential building construction projects in the embodiments. It is suitable for most large and medium-sized engineering projects undertaken by general taxpayers. When the input tax amount is greater than the output tax amount, it supports accurate calculation of tax costs and tax credits. The difference is the tax credit, which corresponds to the situation of negative tax costs in the embodiments.

[0035] In some embodiments, to improve accounting efficiency, the system supports batch processing of tax calculations for multiple items and generates a clear tax allocation detail table to facilitate subsequent auditing and verification. In addition, after the tax calculation is completed, the system will automatically generate a visual table to help users intuitively understand the tax percentage of each item on the list and provide data support for decision-making.

[0036] In some embodiments, the keyword extraction dimensions of intelligent matching cover project location, process type, and material name. The category matching dimensions are divided according to the professional categories to which the list belongs. The professional categories include at least civil engineering, installation, decoration, municipal engineering, and electrical engineering. With the help of multi-dimensional intelligent matching, the system can accurately identify and classify key information of various engineering projects. When extracting project locations, it is further distinguished in combination with specific construction scenarios to ensure that the cost data of different locations can be calculated independently. For the identification of process types, the accuracy of matching is further improved based on industry standards and actual operating procedures. The extraction of material names is linked to the supply chain database to achieve real-time connection with market price fluctuations, thereby improving the accuracy of cost estimation. The design of the category matching dimensions is intended to adapt to the special needs of different professional fields, and can comprehensively cover both the structural complexity of civil engineering and the technical details of installation engineering.

[0037] In some embodiments, the planned material usage for multiple materials corresponding to a single subcontracting list is allocated according to a preset usage ratio. The material usage ratio can be customized and adjusted according to the subcontracting process requirements. The system also supports the allocation of usage for a single material corresponding to multiple subcontracting list items. The system dynamically adjusts the material usage through intelligent algorithms to ensure that the allocation results meet the actual construction needs. When dealing with multiple subcontracting list items corresponding to a single material, the system can automatically identify the priority and dependency relationship between each subcontracting item to avoid duplicate calculations or omissions. At the same time, the system supports users to manually intervene and adjust parameters according to project characteristics to meet the precise control requirements in special scenarios.

[0038] In some embodiments, the system automatically generates detailed, traceable, and verifiable allocation records for core allocation processes such as expense amortization, tax allocation, and bill of quantities association, ensuring that the attribution of each cost is clear and the calculations are reproducible. Specifically, this includes: Cost amortization allocation records: Filed by subcontract list item. Each record includes the total cost amount, amortization rules, such as "equipment rental fee amortized according to the proportion of subcontracted work volume", amortization base, amortization ratio, amortization amount, calculation process formula and associated subcontract list item ID. At the same time, the cost attribution type is marked, such as equipment rental, management fee or other direct costs. For targeted amortization scenarios, additional records are kept of the targeted allocation basis and manual confirmation traces. Tax cost allocation record: Distinguish between revenue-side taxes, deductible taxes and actual tax costs, and record allocation details in two dimensions: owner list items and subcontractor list items. Include the tax base, applicable tax rate, deductible tax amount and allocation amount for each dimension, clarify the calculation process and allocation destination of the tax credit, and synchronously link the deduction voucher filing information of the corresponding cost type. List association and cost collection records: Store the association relationship, matching method, matching time and operator between the owner's list and the subcontractor's list. At the same time, record the collection path of material cost, subcontractor cost and amortization expense corresponding to each subcontractor's list item, forming a full-link record chain of "list association - cost collection - profit calculation", which supports retrieval and traceability by time, list name and cost type. All allocation records are linked to the original entered data and accounting results. When data changes, the record content is automatically updated synchronously, retaining the version differences before and after the change, and marking the reason for the change and the operator. This meets the traceability needs of project auditing and cost control, making it convenient for users to trace the basis of each step of the operation, thereby improving the transparency and credibility of the overall accounting process.

[0039] In some embodiments, deductible taxes on the cost side are differentiated by deductible tax rate according to cost type, with subcontracting costs corresponding to a 9% deductible tax rate and material costs and equipment rental costs corresponding to a 13% deductible tax rate. The system automatically calculates the deductible tax amount by cost amount. At the same time, the system classifies and summarizes the tax amount of different cost types according to preset rules and generates a corresponding tax deduction detail table. This detail table supports export function, which is convenient for users to view or submit to relevant departments for review when needed. In addition, the system also provides an abnormal data prompt function. When the deductible tax rate of a certain cost does not conform to the standard setting, it will be automatically marked and the user will be reminded to verify, thereby reducing the risk of accounting error. To ensure data accuracy, the system has a built-in multi-level verification mechanism, including logical verification, amount verification and tax rate matching verification, to further improve the reliability of the accounting results.

[0040] In some embodiments, the data entry module receives revenue data, cost data, and configuration parameters, and provides data verification functions. The data entry module verifies the input data in real time through built-in verification rules to ensure the integrity and accuracy of the data. The system supports multiple data import methods, including manual input, batch upload, and interface docking with external systems. List Matching Module: Performs intelligent matching of owner lists and subcontractor lists, supports manual correction and storage of association relationships. During the matching process, the system will automatically identify similar items in the owner list and subcontractor list according to preset rules and algorithms, and prompt the user with possible matching results by highlighting or marking them. The cost calculation module includes subcontracting cost calculation, material cost calculation, expense amortization, and tax calculation units, each performing corresponding cost and tax accounting. The subcontracting cost calculation unit automatically calculates subcontracting costs based on the entered subcontracting list data, combined with the subcontracting ratio and settlement rules stipulated in the contract, and generates detailed reports for user review. The material cost calculation unit accurately calculates material costs based on actual usage and loss rate by connecting to the procurement system or manually inputting material price information, ensuring the authenticity and accuracy of material costs. The expense amortization unit supports multiple amortization methods, including by construction period and by output value, which users can flexibly configure according to project characteristics. The system automatically generates an amortization plan and updates the calculation results in real time. The tax calculation unit automatically calculates the tax payable and deductible amount based on national tax policies and local regulations, combined with the project's revenue and cost data, and generates compliant tax reports, providing a reliable basis for financial decision-making. Profit Calculation Module: Summarizes data and calculates total project revenue, total production cost, total profit, and itemized profit; Data storage and output module: Stores various types of data, generates standardized reports and supports multi-format output. This module can customize report templates according to user needs to ensure that the output content meets the usage standards of different scenarios. Dynamic Update Module: Monitors data changes, triggers recalculation, and updates results. When a data change is detected, the system immediately triggers a recalculation process. This process first identifies and categorizes the changed data, then calls relevant accounting units for targeted calculations. During the recalculation process, the system comprehensively verifies key indicators such as costs, taxes, and profits to ensure the accuracy of the updated results. Simultaneously, the system records detailed information on each data change and a recalculation process log, providing complete evidence for subsequent auditing or traceability. Finally, the updated accounting results are synchronized to all relevant modules in real time and displayed to users through a visual interface, allowing them to stay up-to-date with the latest project developments.

[0041] In some embodiments, the data entry module provides a modular entry interface with preset templates for commonly used list items, material types, and cost categories. It supports one-click data import from Excel templates and features data validation, providing alerts for outliers in quantities, unit prices, and tax rates. The module also supports multi-user collaborative entry, ensuring data security and accuracy through hierarchical permission management. During the entry process, the system automatically recommends reference values ​​based on historical data and industry standards to help users quickly complete data entry. Furthermore, the module incorporates an intelligent matching algorithm that identifies similar items and automatically fills in relevant information, significantly reducing repetitive operations and improving work efficiency. For convenient subsequent querying and management, all entered data is assigned a unique identifier and stored in association with project information.

[0042] In some embodiments, the data entry module also has an intelligent memory function, which can save the user's frequently used configuration parameters, reduce repetitive operations, improve work efficiency, and the interface design of the data entry module is simple and intuitive, with key information clearly visible. At the same time, it supports multi-role permission management to ensure data security and operational compliance.

[0043] In some embodiments, the system also records each matching operation to form a relationship log, which is convenient for subsequent querying and tracing. In addition, the relationship storage function supports saving the matching results as templates, which can be quickly called in similar projects, thereby improving work efficiency and reducing repetitive work.

[0044] In some embodiments, to enhance data security, the data storage and output module has a built-in multiple backup mechanism to prevent information loss due to unforeseen circumstances. Through connection with external devices, users can directly print or transmit the generated reports to a designated platform to meet diverse work needs.

[0045] In some embodiments, the data storage and output module is a portable solid-state drive, providing a high-speed data transmission interface to ensure rapid information exchange between different devices. At the same time, the module adopts a shockproof and drop-proof design to enhance its durability in complex environments. By optimizing the storage structure, the module can achieve data classification and management, making it easy for users to quickly locate the required files and further improve operational efficiency.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for rapid profit calculation in engineering projects. Its characteristic is that it includes the following steps: Step 1: Construct a data entry interface to input revenue data, cost data, and configuration parameters. Revenue data includes the owner's list item name, owner's project quantity, and owner's unit price excluding tax. Cost data includes the subcontractor's list item name, subcontractor's unit price excluding tax, subcontractor's project quantity, material name, material's unit price excluding tax, material wastage rate, material usage percentage, total equipment rental amount, various management fees, and other direct costs. Configuration parameters include tax rates, expense amortization rules, and list matching rules. Step 2: Use intelligent matching and manual correction to associate owner list items and subcontractor list items. Intelligent matching includes keyword matching and category matching. Manual correction is used to handle lists that fail intelligent matching or are questionable, and to establish the list association relationship. Step 3: Perform cost itemized calculations, as follows:

1. Subcontract Costs: The cost of each subcontract item is calculated by multiplying the subcontract unit price (excluding tax) by the subcontract quantity. After summing up the costs of each subcontract item, the total subcontract cost for the corresponding owner's bill of quantities item can be obtained.

2. Material Costs: The actual consumption of a single material is obtained by multiplying the subcontracted work volume, the material usage ratio, and the three factors. The cost of a single material is the product of the actual consumption of the single material and the unit price of the material excluding tax. By summing up the costs of each single material, the total cost of the subcontracted materials can be obtained.

3. Tax cost: The tax cost is calculated separately for the revenue side and the cost side. The actual tax cost is the tax on the revenue side minus the deductible tax on the cost side. Step 4: Calculate total revenue, total production cost, and profit, S = M × N, where S is the total project revenue, where... M represents the owner's project quantity, and N represents the owner's unit price excluding tax. L = J + K + H + G, where L is the total production cost of the project, J is the cost of subcontracted items, K is the total cost of subcontracted materials, H is the amortized expense of items, and G is the cost of taxes of items. Q=SL, where Q is the total profit of the project, S is the total revenue of the project, and L is the total production cost of the project; Step 5: Generate accounting reports and support dynamic updates, recalculating all results in real time when data changes.

2. The method according to claim 1, characterized in that, In step 2, the list relationships include three types: one-to-one, one-to-many, and many-to-one. The relationship results are stored in the list mapping database and can be modified and reused.

3. The method according to claim 1, characterized in that, In step 3, the amortization base can be selected from any of the following: subcontracted work volume, subcontracted amount excluding tax, or total material cost, or a custom amortization base can be defined. Single rule amortization or combined rule amortization is supported.

4. The method according to claim 1, characterized in that, In step 3, tax calculation supports both general tax calculation methods and simplified tax calculation methods. Tax rates can be flexibly configured, and tax costs are simultaneously allocated to each subcontractor list item and owner list item.

5. A rapid profit calculation system for engineering projects, characterized in that, To implement the method according to any one of claims 1 to 4, comprising: Data entry module: Receives revenue data, cost data, and configuration parameters, and provides data verification functions; List matching module: performs intelligent matching of owner lists and subcontractor lists, supports manual correction and storage of association relationships; Cost calculation module: includes subcontracting cost calculation unit, material cost calculation unit, expense amortization unit, and tax calculation unit, which respectively perform corresponding cost and tax accounting; Profit Calculation Module: Summarizes data and calculates total project revenue, total production cost, total profit, and itemized profit; Data storage and output module: Stores various types of data, generates standardized reports, and supports multi-format output; Dynamic update module: Monitors data changes, triggers recalculation and updates the results.

6. The method according to claim 1, characterized in that, In step 2, the keyword extraction dimensions for intelligent matching include project location, process type, and material name. The category matching dimensions are divided according to the professional category to which the list belongs, and the professional category must at least cover the fields of civil engineering, installation, decoration, municipal engineering, and electrical engineering.

7. The method according to claim 1, characterized in that, In step 3.2, the material usage plan for each subcontractor item is allocated according to the preset usage ratio. The material usage ratio can be customized according to the subcontractor process requirements, and the usage allocation for a single material to correspond to multiple subcontractor items is supported.

8. The method according to claim 1, characterized in that, In step 3.4, the deductible tax on the cost side is divided into deductible tax rates according to cost type. Subcontracting costs correspond to a deductible tax rate of 9%, while material costs and equipment rental costs correspond to a deductible tax rate of 13%. The system automatically calculates the deductible tax amount by splitting the cost amount.

9. The method according to claim 1, characterized in that, The accounting report generated in step 5 supports hierarchical display by owner list items, subcontractor list items, and professional category. The report must include at least revenue details, cost composition, expense amortization details, tax calculation results, and profit breakdown data, and supports Excel export and real-time visualization.

10. The system according to claim 5, characterized in that, The data entry module provides a modular entry interface with preset templates for commonly used list items, material types, and cost items. It supports one-click data import from Excel templates and also has a data validation function that provides alerts for abnormal values ​​in quantities, unit prices, and tax rates.