Billing software must keep a tamper-evident record of every invoice it issues.
The facts
| Format | Facturae and Verifactu records |
| Goes to | AEAT |
| Regime | Post-audit — you issue, then report |
| Invoice number | Stays ours: gap-free, sequential, yours to control |
| Seller tax ID | NIF |
| Buyer tax ID | NIF |
| Peppol EAS code | 9920 |
| Integration | Verifacti |
The part that costs a day
Verifactu is about the software, not the invoice: each record chains to the previous one with a hash. Delete one invoice from the chain and every later record stops verifying — which is precisely why issued documents cannot be edited here.
We issue gap-free, sequential numbers that reset on your schedule and are never reused — including for voided documents, which keep theirs. The authority takes the document as numbered.
Never extracted from the gross. The two formulas differ by a cent and the wrong one gets the file rejected. The leftover cent is declared as payment rounding (BT-114), where the standard puts it.
Straight talk
We do not hold your signing certificate, we do not file your periodic returns, and we are not your accountant.
No third-party provider is required: we build and validate the document ourselves, and you can still connect one if your accountant prefers it.
Oltrano