NoAutonomo.ai

Autónomo bookkeeping you can double-check

A system for keeping your own accounts in Spain. Trace each amount to its document, record and reasoning. AI answers are checked too.

You can take part without installing the system. The code is available on GitHub.

  1. Document
    Invoice DEMO-001€1,000.00
    January–March
  2. Entry in the income book
    Income counted for IRPF€1,000.00
    Reviewed and posted
  3. Modelo 130, first quarter
    Box 01: income since the start of the year€1,000.00
    Filing with AEAT is a separate step

Fictional example from the first article. Box 01 was checked against the AEAT instructions.

Who it is for

Self-employed in Spain

Initially aimed at Russian-speaking IT professionals. You pay a gestor or a service and want to understand what you are paying for.

People keeping their own books

You need to see the document behind an amount and why a decision was made.

People willing to investigate

A question, a bug report or a correction to the instructions is already a contribution.

How it works

  1. Document

    Upload the original invoice. Extracted fields are suggestions, not confirmed facts.

  2. Review

    Check the number, dates, amount and counterparty against the document. Confirm the accounting decision.

  3. Posting

    Posted records enter the calculations. Posting does not pay an invoice or submit a tax return to AEAT.

Read-only demo

This is the bookkeeping overview: income, expenses and records that need review. Every name, document and amount in the demo is fictional. You can choose a period, search and open records. Editing data, uploading documents and submitting tax returns are unavailable.

Overview for the third quarter of 2026: income of 12,115 euros, expenses of 1,215 euros and two records requiring review. The banner states: demo, fictional data, read-only.
The actual demo interface with a sample dataset. All data is fictional and the demo is read-only.

What works today and what does not

Available today

  • Income and expenses linked to their source documents
  • Reviewing and posting a record as separate steps
  • Preliminary Modelo 130 and 303 calculations from posted records
  • ECB reference rates for foreign-currency invoices
  • Checking a customer’s VAT number in VIES
  • Checking the RETA contribution bracket against net income

Current limits

  • Tax returns are not submitted: filing remains your responsibility
  • The installed version may differ from the repository
  • External AI may require your own API key or subscription; costs have not yet been measured
  • The terms for using the code are being prepared; the code is available to read
  • This is not tax advice

Why AI is involved

AI extracts information from a document and explains a rule. The program calculates amounts from the accounting records. Extracted fields are checked against the original, and explanations against the primary source. If the evidence is insufficient, the question stays open. Agreement between several models does not prove an answer is correct.

Why I am building this

I paid about €72 a month for Xolo. That is expensive for my bookkeeping. I decided to find out how much of the work I could do myself and started building NoAutonomo.ai.

I am building the system for my own bookkeeping and want to keep it free for that use. The terms for using the code are still being prepared. External AI services are paid for separately if they require a key or subscription.

Read the full first article

Work through bookkeeping together

Ask questions in the chat, check examples with fictional data and suggest improvements. Do not post real invoices, tax numbers or keys in the chat.