Billin
Online invoicing software for Spanish freelancers and small businesses, with expense tracking and Verifactu compliance.
Edition 2026
The best invoicing software
Invoicing is a compliance product wearing a design product's clothes. In most of Europe the invoice now has to be machine-readable and sequentially numbered, and the tool has to survive a tax inspection years later.
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How we judged this
Fixed before anything was ranked
What we look at
- Meets the e-invoicing format required in the countries it sells to
- Sequential numbering that cannot be silently edited
- Keeps issued invoices retrievable for the statutory retention period
- Recurring invoices and dunning without a separate product
- Export of the full ledger, not just a PDF pile
Helps if you have it: A sample invoice in the required electronic format, validated by the relevant public validator.
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