Booking payments Every payment carries the key of its invoice.
On request the export also books the money side against the cash account of the payment method - agreed with the tax firm first, because if it keeps booking payments from the bank statement, they would be in the books twice. Under cash-basis taxation every payment line carries the tax key of the sale it settles - so DATEV can report the VAT in the right month (Doc. 1080673).
| The invoice was | Key |
| a domestic sale at 19% | 3 |
| a domestic sale at 7% | 2 |
| an OSS sale on the collective account | 40 |
| an intra-community supply | 40 |
| an export of goods outside the EU | 173 |
| a sale as a small business | 185 |
The 40 cancels the automatic tax function of the account; otherwise the open-item matching would rebook the domestic rate. If a payment settles an invoice with several tax rates, the export writes a payment line of its own per key. If the key of a payment cannot be derived with certainty, it writes no money line for it and names it - never a half or guessed one.