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Modelo 390: What Spain's Annual VAT Summary Is and How It Ties to Your Quarterly Returns

August 28, 2026

Four quarterly modelo 303 returns, four payments to the Agencia Tributaria, and then at the end of the tax year comes one more declaration: the modelo 390. For many autónomos (self-employed workers) this is the one that generates the most questions — not because it’s complicated, but because it’s not clear what it’s actually for if you’ve already filed all four 303s for the year.

The short answer: the 390 is not a new tax payment. It’s the year-end close. The document that says “here’s everything I charged, everything I paid, and everything I’ve settled with the tax authority over the year, added up”. It’s also your last chance to spot anything in the quarterly returns that doesn’t add up.

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Modelo 303 with no activity: how to file it when you haven't invoiced

May 14, 2026

There are quarters when not a single invoice comes in. A bad month that drags on, a lull between projects, the start of an activity where you still haven’t closed your first client. And when the day comes to file your modelo 303 (the quarterly VAT return), the question is unavoidable: if I haven’t invoiced anything, do I still have to file it?

The short answer: yes. As long as you’re registered in the census of economic activities (modelo 036 or 037), the obligation to file the modelo 303 exists every quarter, with or without income.

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The autónomo tax calendar 2026: every deadline and every model

May 12, 2026

If you’re an autónomo (self-employed worker), the tax calendar isn’t something you can leave for “whenever I remember”. Every quarter you have obligations with the Spanish Tax Agency (Agencia Tributaria), and the deadlines are firm. Missing a date, even by a single day, means surcharges and late-payment interest that are perfectly avoidable if you have the dates clear.

This article is a quick-reference cheat sheet. Save it to your favourites and check it every time the quarter close approaches.

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What happens if you file your quarterly taxes late

May 10, 2026

You’ve missed the deadline. The 20th came and went, and you didn’t file the modelo 303 (the quarterly VAT return) or the 130 (the quarterly IRPF instalment). Or maybe it was 30 January and the fourth quarter went unfiled. First of all: it’s not the end of the world. Second: every day you let pass without filing it, the situation gets a little worse. So let’s look at the consequences and what you can do right now to minimise the damage.

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How to fill in the modelo 303 step by step (a practical guide for autónomos)

May 8, 2026

The modelo 303 is the form that every autónomo (self-employed worker) files each quarter to declare VAT (IVA). If you already know how quarterly VAT is calculated, filling it in is just a matter of knowing which figure goes in each box. And out of the sixty-plus boxes the form has, most of them don’t affect you.

This guide goes box by box, with a real example, so you can sit down in front of the Spanish Tax Agency (Agencia Tributaria) form and complete it without hesitation.

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