1. Open the comprehensive service platform for value-added tax invoices in Henan Province, use a computer that can be connected to the Internet, plug in tax control equipment and log on to the platform.
2. When logging in to the platform for the first time, you need to query basic information and choose whether to set the platform password and password to retrieve the answer. After setting the platform password, you need to enter the digital certificate password and platform password of the tax control device to log in.
3. Select invoice deduction check, invoice batch deduction check and export-to-domestic invoice deduction check in the deduction check function to check the declared invoices, and the effective tax deduction can be modified during the inspection. You can also select the functions of "Do not deduct invoices when checking invoices" and "Do not deduct invoices when checking export to domestic sales" to check invoices that are not used for customs declaration.
4. During the reporting period, use the function of "Deduction Check Statistics" to apply for deduction, confirm the deduction statistics table after the deduction application is processed, and fill in the declaration form after confirmation.
5. For checking and confirming that the deduction is the tax period, it is necessary to pay attention to the deadline for reporting the tax period. Check, uncheck, apply for statistics, cancel statistics, confirm and cancel confirmation are supported in each period.