Financial accounts can use ordinary invoices for more than 6 months. Under normal circumstances, invoices within one year can be used normally. Of course, some enterprises and tax bureaus in some areas will stipulate the time limit for invoices, that is, whether they are general or special, they can't be recorded within a certain period, usually three months.

Can ordinary VAT invoices be invalidated in a few months?

Ordinary VAT invoices cannot expire after several months. If the invoice issued by the enterprise is found to be wrong in the current month, it will be invalidated directly in the current month. If it is more than one month, a red-ink invoice should be issued for verification. For some special invoices, such as electronic invoices, red-ink invoices must be issued.