About Finlai
What Finlai is
Free autónomo registration.
An advisor reviews your situation and helps you with Hacienda and Social Security. Our registration service is free, with no subscription required.
You can consider our ongoing advisory service separately. It is not required to access free registration.
You remain responsible for Social Security contributions and taxes on your activity. The registration processing service is free.
For ordinary individual cases in mainland Spain and the Balearic Islands. Excludes the Basque Country, Navarra, the Canary Islands, Ceuta and Melilla. We review special or complex situations before confirming how we can help.
Start my registrationWhat we do
We handle the self-employed worker's taxes end to end, with an assigned advisor you talk to directly.
- Quarterly returns and the annual income tax return, prepared and filed by a tax advisor.
- Verifactu-compliant invoicing from the web or your phone.
- Review of expenses and bank movements to apply every deduction you are entitled to, with a human validating each one.
- VAT and income tax forecast during the quarter, so you know what you will pay before the payment is due.
- A stable assigned advisor, no ticket system: WhatsApp, in-app chat or a call.
How we work
We use artificial intelligence to organise documents, read invoices and spot deductions, so we are faster and make fewer mistakes. But we never hand over control: a tax advisor reviews everything filed with the tax office.
Your data is yours. You can download your ledgers and all your information at any time, and if you already have an accountant, Finlai also works to centralise scattered income, expenses and bank statements.
Who is behind it
Finlai is a Spanish company based in Madrid, incorporated in 2026 and made up of tax advisors and engineers. Behind every account there are people on the team, not just software.
We are registered in the Spanish Tax Agency's census of social collaborators through the agreement of the Spanish Association of Accounting and Business Administration (AECA), which lets us file returns on behalf of our clients.
- Legal name
- FINLAI SOFTWARE FISCAL, S.L.
- Tax ID (NIF)
- B88869128
- Registered office
- C/ Serrano Anguita 13, Hub Barceló, 28004 Madrid
- Spanish Tax Agency
- Social collaborator of the AEAT (AECA agreement)
Who it is for, and who it is not
For self-employed workers and small businesses with tax obligations in Spain who want to delegate VAT, income tax and filings to a real advisor, know in advance what they will pay and talk to their advisor without tickets.
Not a fit if your activity or tax obligations are outside Spain, or if you are looking for a public API to integrate with: Finlai does not offer one.