Tax Authority Revokes NIF from Over 100 Companies: What It Means and How to Act in 2026

Key data

Over one hundred commercial companies and associations have lost their tax identification number with immediate effect from October 7, 2026. The measure, published in the Resolution of September 30, 2026 from the Tax Management Department of the AEAT, is not a warning: it is a total operational disqualification.

If your company has a business relationship with any of these entities—as a supplier, customer or partner—the risk is not just theirs. It is also yours.

What does this regulation establish?

The Tax Agency acts under the authority of the additional provision 6, section 4 of the General Tax Law, introduced by the Anti-fraud Law 11/2021. This rule allows the AEAT to revoke the NIF of entities that fail to comply with their tax obligations or show signs of being instrumental or inactive.

NIF revocation is not a direct economic sanction: it is an operational disqualification. Specifically, the affected entities cannot:

• Issue invoices with tax validity.
• Open bank accounts or conduct financial operations with tax implications.
• Register acts, contracts or agreements in public registries (Commercial Registry, Property Registry, etc.).

The profile of the affected entities is relevant: many appear «in formation», which points to possible instrumental or inactive companies used for aggressive tax planning structures or directly for fraud.

The resolution is published in the Official Gazette with immediate effect, without a transition period. There is no grace period from publication.

Economic and operational impact

The impact is not limited to entities with revoked NIF. There are two risk vectors for third parties:

• Tax risk: If you have received invoices from a company whose NIF has been revoked, the Tax Authority may question the deductibility of the expense or the VAT withheld. An invoice issued by a disqualified entity lacks tax validity.
• Commercial risk: Contracts signed with these entities may be in a compromised legal situation, especially if they involve registry registration or execution of obligations with tax implications.

For the affected entities themselves, the operational blockade is total until they regularize their situation with the AEAT. Without an active NIF, they cannot continue their economic activity normally.

The fact that many of the companies appear «in formation» suggests that the AEAT is acting preventively against structures created but never operational, a pattern common in tax fraud schemes.

Who does it affect?

• Commercial companies and associations with revoked NIF: Total operational disqualification until regularization with the AEAT.
• Partners and administrators of the affected entities: Potential liability for the situation of the entity; they must act to regularize.
• Companies that are suppliers or customers of the affected ones: Risk that their received invoices are considered invalid by the Tax Authority.
• Financial entities: Required to block operations of companies with revoked NIF.
• Notaries and registrars: Cannot authorize or register acts of these entities while the NIF is revoked.
• Tax advisors and management firms: Must verify the status of their clients' NIF and counterparties in relevant operations.

Practical example

Imagine your company has contracted cleaning services with a company «in formation» that appears in this resolution. Over the past few months you have received invoices worth €15,000 and have deducted the corresponding VAT (€3,150).

As of October 7, 2026, that company has its NIF revoked. If the Tax Authority initiates an inspection and detects that you operated with a disqualified entity, it may:

• Reject the deduction of VAT withheld (€3,150 to be returned plus interest).
• Question the deductibility of the expense in Corporate Income Tax.
• Initiate a broader inspection procedure on your relationships with that entity.

The solution: proactively verify the NIF status of your suppliers and counterparties before recording invoices or signing contracts. The AEAT publishes these resolutions in the Official Gazette, and the consultation is public and free.

What should companies do now?

1. Verify if any supplier or customer appears in the resolution: Consult the full text of the Resolution published in the Official Gazette and cross-reference the NIFs with your counterparty database.
2. Review invoices received from affected entities: Identify if you have deducted VAT or expenses from companies with revoked NIF. Consult with your tax advisor about the specific risk and whether any voluntary regularization is appropriate.
3. Suspend payments and pending operations with these entities: Until they regularize their NIF with the AEAT, any operation with you may have tax consequences.
4. If your company is the affected one, act immediately with the AEAT: Entities with revoked NIF must regularize their tax situation with the Tax Management Department to recover the NIF. There is no published maximum deadline, but each day of inactivity means total operational blockade.
5. Implement a NIF verification protocol in your company: Before registering a new supplier or signing a relevant contract, verify the NIF status in the AEAT census. It is a preventive measure at zero cost.

Official source

Consult full regulation in 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-2026-20893