Tax Authority Revokes NIF from Over 100 Companies: What Risks You Face if You Operate with Them

Key data

Over one hundred business entities have lost their Tax Identification Number with immediate effect as of November 6, 2026. The measure, published by the Tax Management Department of the State Tax Administration Agency (AEAT), disables them from conducting economic and tax operations with full legal validity.

The legal basis is the General Tax Law and the modifications introduced by the Anti-fraud Law of 2021, which strengthened the Administration's tools to combat fraud through instrumental or inactive entities. The affected entities are registered in different provincial commercial registries throughout the national territory.

The real problem is not only for companies whose NIF has been revoked: the risk is transferred to any third party operating with them. If your company has purchased services from them, paid their invoices or maintains active contracts, those transactions may lack tax validity.

What does this regulation establish?

The resolution publishes the official list of business entities whose NIF has been revoked by the AEAT. NIF revocation is an administrative measure that disables the entity from operating with full legal and tax validity: it cannot issue valid invoices, cannot register acts in public registries and its operations lack effectiveness against the Administration.

The affected entities are distributed mainly in the following autonomous communities:

• Galicia
• Madrid
• Canary Islands
• Other autonomous communities (entities registered in different provincial commercial registries)

The measure is part of the fight against tax fraud and instrumental or inactive entities: entities that are formally incorporated or maintained but do not develop real economic activity, and which in many cases are used for tax evasion or avoidance operations.

The Anti-fraud Law of 2021 expanded and strengthened the AEAT's capacity to revoke NIFs, turning this tool into a more agile and frequent mechanism. The periodic publication of these lists in the BOE is precisely the transparency mechanism that allows third parties to know which entities are disabled.

Economic and operational impact

The economic impact of this measure does not fall solely on the sanctioned entities. The risk extends to the entire chain of commercial relationships of those entities:

• Invoices issued by entities with revoked NIF: may be rejected by the AEAT as support for VAT deductions or deductible expenses in Corporate Income Tax.
• Active contracts: their legal validity is compromised, which can generate litigation or claims.
• Operations in public registries: any act requiring registry registration (real estate sales, establishment of guarantees, etc.) may be blocked.
• Inspection risk: operating with entities with revoked NIF can be a red flag for the AEAT and result in verification actions on your company.

From an operational perspective, companies that have any of these entities as supplier, client or business partner must act immediately to avoid tax contingencies.

Who does it affect?

• Entities with revoked NIF: are disabled from operating with full legal validity as of November 6, 2026.
• Companies that are suppliers or clients of those entities: their invoices and contracts may lack tax validity.
• Self-employed individuals who have invoiced these entities: their declared income may be questioned if the counterparty has a revoked NIF.
• Tax advisors and management firms: must verify the NIF status of their clients and their clients' counterparties.
• Purchasing and finance departments: need to incorporate NIF verification as a mandatory step in the supplier registration process.
• Financial entities and notaries: must exercise extreme diligence in operations involving these entities.

Practical example

Imagine that your company, based in Madrid, contracted consulting services during 2026 from a business entity registered in the Madrid Commercial Registry. You have received and accounted for invoices totaling 30,000 euros, deducting the corresponding VAT and recording the expense in your Corporate Income Tax.

On November 6, 2026, that entity appears on the list published by the AEAT with its NIF revoked. From that moment on:

• Invoices issued after that date lack tax validity: you cannot deduct the VAT or the expense.
• Previous invoices may be subject to intensified verification by the AEAT, which will analyze whether the operation was real or if the entity was instrumental.
• If you have pending payments, making new payments to that entity can further complicate your position in the event of an inspection.

The solution: immediately review the list published in the BOE, identify if any of your suppliers or clients appear on it, and consult with your tax advisor before conducting any additional operations with those entities.

What should companies do now?

1. Consult the official list published in the BOE (Resolution of October 29, 2026) and identify if any of your suppliers, clients or business partners appear on it.
2. Immediately suspend any pending operations with the identified entities: do not make new payments, do not issue or accept new invoices until the situation is clarified.
3. Review the invoices already accounted for from those entities and evaluate with your tax advisor the risk of the VAT deductions and expenses applied.
4. Incorporate NIF verification as a mandatory step in the new supplier registration process and in the periodic review of existing ones. The AEAT publishes these lists periodically.
5. Document due diligence: if you have operated with any of these entities, keep all documentation that proves the reality of the operations (contracts, delivery notes, emails, delivery evidence).
6. Consult with a tax advisor if you have doubts about the specific impact on your VAT return or Corporate Income Tax, especially if the volume of operations with those entities is significant.

Official source

Consult complete regulation at official source

Notice: This article is for informational purposes only and does not constitute legal advice. For specific decisions, consult a qualified professional. Source: https://www.boe.es/diario_boe/txt.php?id=BOE-A-2026-23324