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Case 001 · Cofactu Cofactu isotype Madrid · Spain

Origin file

A rule is not promised.
It becomes a product.

Cofactu was founded in 2024 so that freelancers, small businesses and accounting firms in Spain can handle taxes without putting the business on hold. The team turns the rule into product, operations and support when needed.

Talk to the team

From rule to product

A promise has to
pass a test.

This is the path Cofactu follows when it turns a tax obligation into a product capability.

  1. Step 01

    The rule

    RD 1007/2023 and the technical specification set the requirement before a line of product is written.

  2. Step 02

    The engine

    Invoice, XML, signature and hash chaining are built as one chain, not as a last-minute add-on.

  3. Step 03

    The proof

    A real invoice accepted by the AEAT (Spanish Tax Agency) leaves a verifiable CSV (secure verification code) and a documented technical trail.

  4. Step 04

    The product

    That trail becomes an operation that freelancers, small businesses and accounting firms can use without learning cryptography.

The May 2026 proof does not replace an independent audit; it shows that the tax path has been executed and left evidence that can be checked.

About us

Who is behind
Cofactu?

Product, infrastructure and support are coordinated within the same organisation, with identifiable people accountable and public contact channels.

Company
Codificado SL
A team based in Madrid, Spain
Your data
In the European Union, GDPR-compliant
Support
The team reviews your enquiry and replies in business hours
If you leave
Export in one click, any time

Your tax data does not leave the European Union.

Sources

Tax judgement starts
at a specific source.

The engine is built on official texts and specifications. When a rule changes, the work starts there.

Scope
Invoicing software
Control
Rule + XSD + proof
Status
Verified
Latest key evidence
Invoice accepted · May 2026
  1. RD 1007/2023

    • VeriFactu regulation

      Technical requirements for invoicing software. Cofactu's engine was designed from this text.

  2. Orden HAC/1177/2024

    • Technical specification

      XML formats, fields and AEAT endpoints. The XSDs are updated in Cofactu the same day.

  3. Ley 11/2021

    • Anti-Fraud Law

      Art. 29.2.j: the legal basis that requires verifiable software. The reason behind everything.

  4. AEAT

    • Sandbox and production

      First invoice accepted in May 2026 (CSV A-MMURGK5EJUWRZU). mTLS chain operational.

How we work

A feature ships
only after three gates.

Tax, product and customer relationship form a single review before release.

01 · Tax — Official XSD passed

Every feature is validated against RD 1007/2023 and the official AEAT XSD before it is merged. If it does not comply, it does not ship.

01 · Tax — Change shipped

When the Orden HAC changes, the XSDs reach Cofactu the same day. No "we will add it to next quarter's roadmap".

02 · Product — Checked against a real case

Designed with real accounting firms (gestorías). What makes tax sense gets built, not what inflates a demo.

02 · Product — Export available

The data belongs to the customer. Export it in one click, any time. Customers stay because they are happy, not because they are trapped.

03 · Relationship — No tax add-on

Public prices, with no surprise add-ons for VeriFactu or a "premium module": VeriFactu is included in every plan. What you see is what you pay.

03 · Relationship — Context reviewed

The team reviews the product context before replying. No canned answers, no maze of categories.

Who it is for

One shared infrastructure.
Three workspaces.

The tax foundation is the same; the interface puts first the work each profile needs to get done.

  • 01

    Self-employed (autónomos)

    Invoice, comply with VeriFactu and prepare your tax returns from the same data.

  • 02

    Small businesses (pymes)

    Sales, team, point of sale (TPV) and accounting share one operating history.

  • 03

    Accounting firms (gestorías)

    Each client keeps their own space; the firm works from a shared portfolio.

2024 the year Cofactu was founded
100% of features pass the official AEAT XSD before shipping
4 h first response if you cannot invoice (business hours)

A Cofactu commitment

"We do not want another tax software that charges add-ons for everything and answers with a ticket. We build the one we would have liked to use: it complies, it does not trap you, and it gives you a clear next step."
Cofactu teamProduct and operations
Write to the team
FAQ

Frequently asked questions about Cofactu

What to know before trusting Cofactu with a critical part of your operations.

Talk to us
Who is behind Cofactu?

Cofactu is a product of Codificado SL, a team based in Madrid, Spain. Product, infrastructure and support are coordinated within the same organisation, with identifiable people accountable and public contact channels.

Where is my data hosted?

In the European Union. Cofactu uses infrastructure with an EU region (database and PDF/XML storage) and complies with the GDPR. Your tax data does not leave the European Union.

Who answers if I have a problem?

The Cofactu team reviews your enquiry and replies during business hours. We avoid long forms and canned answers: just explain the context, the relevant identifier and what you need to resolve.

Can I take my data with me if I leave Cofactu?

Yes, in one click. Cofactu exports your invoices, customers and records in standard formats. We do not believe in trapping customers: if Cofactu is not a fit, we help you leave.

Why trust a young company with something this critical?

Because compliance is not improvised: the VeriFactu engine was designed by reading RD 1007/2023, Orden HAC/1177/2024 and RD 254/2025 in full, and every feature passes the official AEAT XSD before shipping. The first real invoice was accepted by the AEAT in May 2026.

(Start today)

Open an account or write to us. You will see the product, the evidence and the people accountable for both.

Try it in your own context

  • VeriFactu is included in every plan
  • Export in one click, any time
  • Your tax data does not leave the European Union