Pablo Nieto is a marketing consultant in Seville. His clients are companies in Ireland, Portugal and the Netherlands, which he invoices without Spanish VAT because the services are located where each of them has its seat. Since registering he has filed Modelo 349 every quarter, together with the 303, the quarterly VAT return. In July 2026 he closed two large projects with a Dublin company and, at the end of August, his accountant warned him that for this quarter he was "no longer on quarterly". Pablo did not understand how the filing frequency could change halfway through a quarter, or what he had to file and when.
What the 349 covers and what it does not
The 349 is the summary return of intra-Community transactions. For a self-employed person providing services, it usually includes two kinds of transaction, defined in article 79 of the Spanish VAT Regulations (Royal Decree 1624/1992):
- Intra-Community supplies of services: services that are not treated as supplied in Spain, that are subject to VAT and not exempt in another member state and whose recipient is a business in that state acting as the person liable for the tax. These are Pablo's invoices to Dublin, Lisbon or Rotterdam.
- Intra-Community acquisitions of services: services you receive from a business in another member state, which are subject to VAT and not exempt in Spain and for which you are the person liable for the tax. These are, for example, the advertising or software invoices that reach you from Ireland.
Transactions with clients outside the Union, such as the United States or the United Kingdom, are not included, nor are sales to the Canary Islands, Ceuta or Melilla, which are not "another member state" for VAT purposes. Exempt services are not included either: the article itself requires them to be subject and not exempt.
The frequency rule
Article 81.2 of the VAT Regulations sets the rule. As a general rule, the 349 is monthly and is filed during the first twenty calendar days of the following month. The July return has a special deadline: it can be filed during August and the first twenty days of September.
It becomes quarterly when, neither in the reference quarter nor in any of the four previous calendar quarters, the total amount of the supplies of goods that must be reported and of the intra-Community supplies of services has exceeded 50,000 €, excluding VAT. Note that the threshold is measured on sales, not on purchases from suppliers in other EU countries.
If the threshold is exceeded at the end of any month in the quarter, a return must be filed for the month or months elapsed since the start of the quarter, within the following twenty calendar days. And in every case, the return for the last period of the year is filed during the first thirty calendar days of January (art. 81.3).
What happened to Pablo, month by month
These were his intra-Community supplies of services, excluding VAT:
| Period | Amount | Quarter to date | Over 50,000 €? |
|---|---|---|---|
| Q3 2025 | 21,000 € | — | No |
| Q4 2025 | 19,500 € | — | No |
| Q1 2026 | 18,000 € | — | No |
| Q2 2026 | 24,000 € | — | No |
| July 2026 | 22,000 € | 22,000 € | No |
| August 2026 | 30,000 € | 52,000 € | Yes, at the end of August |
| September 2026 | 9,000 € | 61,000 € | — |
Step by step:
- Up to the second quarter of 2026, neither that quarter nor the four before it exceeded 50,000 €: Pablo was correctly filing the 349 quarterly.
- At the end of July, the quarter to date stood at 22,000 €. Still below.
- At the end of August, the quarter to date reached 52,000 €. At that point the situation in the second paragraph of article 81.2.2 arose.
- Consequence: Pablo had to file a return covering July and August within the first twenty calendar days of September.
- September is no longer part of a quarterly period: it is reported as a month, by 20 October.
- From then on, the third quarter of 2026 is one of the "four previous quarters" for each of the next four quarters. That is why Pablo will go on filing the 349 monthly during the fourth quarter of 2026 and the first three quarters of 2027.
- The first quarter in which he could return to quarterly filing is the fourth quarter of 2027, and only if that quarter and the four before it (from the fourth quarter of 2026 to the third of 2027) all stay below 50,000 €.
Many people believe that if the next quarter is back to normal, quarterly filing of the 349 comes back too. It does not: the quarter in which the threshold was exceeded keeps counting for the following four quarters. Filing quarterly during that period means filing the monthly returns that were due out of time, with the risk of a penalty for the information return and of requests for information about the differences.
The cross-check with the 303
The 349 is not filed in isolation. The same transactions appear in Modelo 303: the intra-Community supplies of services in the boxes for transactions not subject to the tax or under the reverse charge that correspond to services supplied to businesses in other member states; the acquisitions in the self-assessment boxes and in the deductible VAT boxes. The Agencia Tributaria, the Spanish tax agency, compares the two, and it also receives the information that Pablo's clients report in their own countries through the Union's exchange system.
A mismatch between the 349 and the 303 usually points to one of these situations:
- An invoice to a client in another EU country reported in the 303 as a domestic transaction, with Spanish VAT.
- A transaction with a client outside the Union put into the 349 by mistake.
- A purchase from a supplier in another EU country self-assessed in the 303 and forgotten in the 349, or the other way round.
- Invoices in foreign currency converted at different rates in each return, something we explain in what exchange rate to use for an invoice in dollars.
When the client reports in its country an acquisition in your name for an amount different from the one you report as a supply, the discrepancy reaches Hacienda, as the Spanish tax office is commonly known, even if your two Spanish returns agree with each other. It is worth confirming with each client the VAT number held on its records and the date it uses to report the transaction.
Periods with no transactions
The 349 covers transactions carried out; if there were none in a month or quarter, there is nothing to summarise. For the frequency and the amounts to be correct, it is essential to be registered in the Registro de Operadores Intracomunitarios, the register of intra-Community operators, which gives you the number your clients use. We explain this in what the ROI is and when I need it.
If you have filed quarterly when you should have filed monthly, it can be put in order: the months affected are identified, the missing returns are filed and the amounts are checked against the 303 returns already filed. You can send us your 349 and 303 returns for the last five quarters through the form for self-employed people with international clients. How self-assessment of purchases works is in the guide to the reverse charge, and the quarterly VAT return in the guide to Modelo 303 for the self-employed.
The filing calendar for people who work with companies in other countries, with the 349 fitted in between the 303 and the 130, is explained on the Salama Tax page for self-employed people with clients abroad.