The process of tax copy declaration is to copy the tax first, then declare, and finally clear the card. Now the VAT tax prevention and control system will automatically copy the tax. Before the VAT tax declaration, it is necessary to open the VAT tax prevention and control system once a month, so that it can automatically copy the tax. After the tax copying is completed, declare the VAT tax return form through the electronic tax bureau; After the declaration is completed, open the VAT prevention and control system again, and the system will automatically clear the card. It should be noted that card clearing needs to be completed before the end of the tax declaration period.