Free tool
Is my invoice numbering okay?
Answer a few simple questions and find out if your invoice number sequence has any common problems.
Why invoice numbering matters
Spanish invoicing rules require invoices to be issued in a clear, unbroken sequential order. Numbers cannot be reused, skipped without reason, or reset mid-series without documentation.
Under Veri*Factu requirements, this matters even more — the invoice chain needs to be traceable and consistent.
Common problems to check for
- Duplicate invoice numbers
- Gaps or skipped numbers
- Restarting numbers mid-year without reason
- Mixing personal and business invoice sequences
- Different numbering series without documentation
- Numbers that don't follow a clear pattern
General guidance only. Confirm your invoice numbering setup with your gestor, especially if migrating from another system.
Check your invoice numbering
Answer all questions for your result.