Invoicing and tax copying process upgrading method of tax control device

Abstract

The invention provides an invoicing and tax copying process upgrading method of a tax control device. The invoicing upgrading method comprises the steps that a hardware upgrading device is connected to the tax control device, and whether the state of the hardware upgrading device is normal is detected; invoice information is typed in; invoice detail information is generated and stored in the hardware upgrading device; an invoice identification string is returned; the invoice identification string is stored in a database; whether information in the hardware upgrading device and information in the tax control device are consistent is determined through comparison; the invoicing process is finished. The tax copying process upgrading method comprises the steps that the number intervals of invoice identification strings needing tax copying are obtained; invoice information corresponding to all the invoice identification strings are decrypted and read; invoice information in the tax control device is read; whether the invoice information stored in the tax control device and the invoice information stored in hardware upgrading device are consistent is determined through comparison; if yes, a tax declaration detail data flow of an invoice is generated; the above steps are repeated until all the invoice identification strings in the intervals are read; a tax declaration file is generated and stored in a tax declaration system, and the tax copying process is finished.

Description

technical field [0001] The invention relates to the technical field of tax control, in particular to a method of using hardware upgrade equipment to cooperate with existing tax control equipment to expand functions for users in the process of issuing invoices and copying taxes, so as to meet the latest needs of modern enterprise users. Background technique [0002] The existing value-added tax anti-counterfeiting tax control system encrypts the seven elements of the invoice (including invoice code, invoice number, amount, tax amount, invoice date, seller's tax number and buyer's tax number) through the invoicing subsystem and encrypts them through the authentication subsystem. The text decryption restores the seven elements of the invoice, and the combination of the two achieves the purpose of anti-counterfeiting of the invoice. [0003] The process of issuing invoices for existing tax control equipment is as follows: figure 1 shown. From figure 1 It can be seen from the ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the above-mentioned defects of small storage capacity and limited encrypted information in the existing tax control device, and provide a simple and effective tax control device billing and tax copy tax declaration upgrade method

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