Tax Calculator Multi-Rate Segmentation
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Solution Overview
Problem
Existing tax calculators can only perform tax calculations based on a single selected tax rate, making it difficult to calculate a tax-included total amount for multiple commodities with different tax rates.
Innovation Solution
A tax calculator that includes a processor configured to display tax-included amounts based on multiple tax rates, allowing users to input and calculate tax-included amounts for different tax rates and display a grand total amount by totaling individual tax-included amounts from each tax rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a tax calculator performs tax calculations based on a single selected tax rate, then the calculation process is simple, but it cannot calculate tax-included total amounts for multiple commodities with different tax rates
Solution Approach 1:
The patent divides the tax calculation system into multiple independent calculation units, each handling a specific tax rate. The calculator maintains separate storage areas for different tax rates (e.g., tax rate 1, tax rate 2) and performs calculations for each rate independently, then aggregates the results. This segmentation allows the system to handle multiple tax rates without increasing operational complexity for the user.
Solution Approach 2:
The tax calculator is designed with multi-functionality to perform tax calculations for multiple different tax rates using a unified interface. The system can switch between different tax rates and calculate tax-included amounts for each, while maintaining a consistent user interaction model. This universality enables the calculator to adapt to various tax rate scenarios without requiring separate devices or complex configuration changes.
2Ease of operation
If a tax calculator displays only one tax-included amount at a time, then the display is simple, but users cannot easily confirm and switch between tax-included and tax amounts for multiple tax rates
Solution Approach 1:
The patent introduces a temporal dimension to the display system, allowing it to show multiple tax calculation results sequentially. The display can switch between different tax-included amounts (e.g., tax-included amount for tax rate 1, tax-included amount for tax rate 2) in response to user operations. This dimensional approach to information presentation enables comprehensive display of multiple tax rates without overwhelming the user interface.
Solution Approach 2:
The tax calculator automatically manages the display of multiple tax calculation results based on user input operations. When a user inputs a tax-excluded amount, the system automatically calculates and displays the corresponding tax-included amounts for all configured tax rates. This self-service mechanism eliminates the need for manual switching or complex user actions to view different tax rate results.
Data Source
AI summary
According to one embodiment, a tax calculator displays a first tax-included amount, responding to a first input operation relating to a first tax rate, for a first numerical value indicating a tax-excluded amount; displays a second tax-included amount, responding to a second input operation relating to a second tax rate, for a second numerical value indicating a tax-excluded amount; displays a tax-included grand total amount calculated by totaling a first tax-included total amount indicating a total of the first tax-included amount, and a second tax-included total amount indicating a total of the second tax-included amount; and displays the first tax-included total amount responding to the first input operation after the tax-included grand total amount was displayed, or the second tax-included total amount responding to the second input operation after the tax-included grand total amount was displayed.