After clicking the network copy, the tax controller will display the tax return data in the user card of last month 1 day, that is, May 1 day, because the tax return of last month was not cleared after being copied. The solution is to clear the card. There is a card clearing function on the software. Click clear card after online deduction is successful.

The tax controller is one of the products of the country to solve the electronic tax problem, which can realize the tax control function well. Tax controller refers to an electronic device that realizes tax control function with the cooperation of computer or other electronic equipment. It can ensure the correct generation, reliable storage and safe transmission of business data and meet the management and data verification needs of tax authorities. The tax controller is a serious and indestructible device in law, which has the function of tax calculation. It is not only a right-hand man for business enterprise management, but also a law enforcement representative for tax collectors to collect store sales data. The tax control data generated by the tax controller are stored in the tax control card and the tax control memory respectively, and are the vouchers for paying taxes to the tax authorities. The tax controller is suitable for commercial enterprises, hotels, restaurants and other catering, entertainment and service enterprises that have applied computer management. It is the transformation of commercial enterprises that have applied computer network management to catering, entertainment and service. This paper introduces the software and hardware design scheme of a tax controller, which is designed in strict accordance with national standards, and has successfully developed products with perfect and stable performance.