Tax Calendar
Form 347
Annual declaration of transactions with third parties — mandatory when total dealings with the same client or supplier exceed €3,005.06 during the year.
Informational content updated to 2026. Deadlines, amounts and percentages shown on this page may change due to regulatory updates. For your specific case, please consult with our certified professionals before taking action. Schedule free consultation →
What is Form 347?
Form 347 (Modelo 347) is the annual informative declaration of commercial transactions with the same third party (client or supplier) where the combined amount during the calendar year exceeds €3,005.06 including VAT.
No payment or refund is generated: it is a purely informative return that allows the AEAT to cross-reference data between both parties to each transaction and identify potential discrepancies or irregularities. If a supplier declares having received €10,000 from a specific client, and that client declares having paid €8,000 to the same supplier, the AEAT generates an inconsistency alert.
Transactions must be reported broken down by quarter (not just the annual total), which facilitates cross-checking with periodic VAT returns.
Who must file?
- Business owners and professionals who have conducted transactions with the same third party totalling more than €3,005.06 (VAT included) during the year.
- Companies and other legal entities with economic activity.
- Property owners' communities (for certain expenses above the threshold).
Exceptions and exemptions:
- Private individuals without business activity.
- Intra-community transactions (reported in Form 349).
- Transactions subject to withholding already reported in other informative returns (Forms 180, 190, etc.) — these are excluded from Form 347 to avoid duplicates.
- Certain transaction types are excluded from Form 347 under the General Tax Regulations. Consult our office to confirm which of your company's transactions should or should not be included.
Filing deadlines
| Period | Deadline |
|---|---|
| Full calendar year | By the last day of February of the following year Form 347 for 2025 is due by 28 February 2026 (2026 is not a leap year). |
How to file
- 1 File electronically — mandatory for most declarants — at sede.agenciatributaria.gob.es.
- 2 Log in with a digital certificate or Cl@ve.
- 3 For each third party above the threshold: enter NIF, name, total annual amount and quarterly breakdown.
- 4 Import the file generated by your accounting software or enter data manually.
- 5 Verify that amounts reconcile with your VAT records for the year.
- 6 Submit the return and save the confirmation.
Required documentation
- Sales and purchase invoices for the year, grouped and totalled by client/supplier NIF.
- Total amount and quarterly breakdown for each counterparty exceeding €3,005.06.
- Auxiliary list of transactions per supplier/client to identify who exceeds the threshold.
Penalties for non-compliance
- Informative return: fixed penalty for not filing or filing late.
- There may also be a penalty proportional to the number of incorrect or omitted data entries.
- Penalties for not filing Form 347 or filing with incorrect data vary depending on the number of affected records and the circumstances. Consult our professionals for the applicable amount.
Related forms
Last reviewed: June 2026. Tax regulations change frequently — check our tax calendar or contact our professionals for advice tailored to your situation.
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