Filing your quarterly VAT return: what goes in and when

Terms used

• DNI — The DNI is the national identity card of Spanish citizens.
• Modelo 303 — Modelo 303 is the periodic IVA return, filed online each quarter.
• IVA — IVA is Spain's value-added tax, charged on most sales of goods and services.
• Modelo 390 — Modelo 390 is the old annual IVA summary, now required only for a small group of taxpayers.
• Cl@ve — Cl@ve is the government login system, using a PIN or permanent password, to identify yourself online.
• NRC — The NRC is a payment reference issued by a participating bank when you pay a tax online.

Key rules

• Deadlines: Modelo 303 is due 1-20 April, 1-20 July and 1-20 October, and 1-30 January for the fourth quarter.
• Direct debit: If you pay by direct debit, you must file about five days earlier than the normal deadline.
• Nil return: While you are registered for IVA, you must file even for a quarter with no activity.
• Annual summary: Most freelancers file no separate annual summary, because its boxes are in the fourth-quarter return.
• Corrections: File a complementary return if you paid too little, and ask for a rectification if you paid too much.

When to file

You file modelo 303 online every quarter. The windows are 1-20 April, 1-20 July and 1-20 October, and 1-30 January for the fourth quarter.

If the result is to pay and you pay by direct debit, you must file earlier. The cut-off is about five days before the normal deadline. If a deadline falls on a weekend or holiday, it moves to the next working day. The tax agency publishes a calendar each year, so check the exact dates there.

Most freelancers file quarterly. Monthly returns are only for large companies, groups and users of the immediate information supply system. Joining the monthly refund register is voluntary.

What goes into the return

Modelo 303 compares the IVA you charged with the IVA you paid.

• IVA you charged: the taxable base of your sales in the quarter, split by rate (4%, 10% and 21%). Add any purchases from other EU countries and any reverse-charge IVA.
• IVA you can deduct: the IVA on domestic purchases and expenses, on imports and on investment goods.
• Result: the IVA you charged minus the IVA you can deduct.

Special boxes cover pro-rata, the cash-basis regime and amounts from corrected invoices. The form also shows the results of your earlier returns and asks how you want to pay, deduct or claim a refund.

Box numbers and layout change, so always use the official form for the current year.

If the result is negative

You can carry the negative amount forward to later quarters. You can also ask for a refund, either in the fourth quarter or on request.

Quarters with no activity

Once you are registered for IVA, you must file for every quarter, even with no invoices. File a nil return ("sin actividad"). Skipping it can bring a penalty for failing to file a mandatory return. The only exceptions are if you deregister or are not an IVA taxpayer.

How to file and pay

File through the tax agency's online office. You can identify yourself with an electronic certificate, an electronic DNI, Cl@ve PIN or Cl@ve permanente. A representative can file for you if you have authorised them.

To pay, choose one of these:

• Direct debit from a Spanish bank account. File before the earlier deadline.
• Online card payment.
• Bank payment with an NRC (a payment reference) from a participating bank.

Do you need the annual summary?

Probably not. The separate annual summary, modelo 390, no longer applies to most taxpayers. Since the 2023 year, the annual summary boxes sit in the fourth-quarter modelo 303. Fill them in there. A small group with special circumstances still files modelo 390, so check whether an exception applies to your regime.

Fixing a mistake

The route depends on who the error favours.

• You paid too little, or claimed too much back: file a complementary return. Mark it as complementary and give the number of the original. If you file after the deadline, expect surcharges and late interest.
• You paid too much, or claimed too little: ask for a rectification of your return. You generally have four years to ask.
• An invoice had the wrong IVA: issue a corrected invoice that refers to the original and gives the right amounts. Issue it as soon as you find the error, and within four years of the date the IVA became due. If it lowers the tax charged, adjust it in the period when you issue it, or ask for a rectification.

The decision, timeline, documents, checklist and warnings below walk you through the practical steps.

Choosing between options

How do you fix a mistake in a filed modelo 303?

• Complementary return: You paid too little tax or claimed too big a refund: file a complementary return (autoliquidación complementaria), marking it as complementary and giving the number of the original.

• Request for rectification: You paid too much tax or claimed too small a refund: ask the tax agency for a rectification (solicitud de rectificación), normally within four years.

• Corrected invoice: The error is on an invoice: issue a corrected invoice (factura rectificativa) that refers to the original, as soon as you find the error and within four years.

If the error favours you and the tax agency is owed money, file a complementary return; if it favours the agency, ask for a rectification.

Timeline and deadlines

• File modelo 303 for the first quarter: 1-20 April

• File modelo 303 for the second quarter: 1-20 July

• File modelo 303 for the third quarter: 1-20 October

• File modelo 303 for the fourth quarter, including the annual summary: 1-30 January

• File earlier if you pay by direct debit: about five days earlier, around 15 April, 15 July and 15 October, and 25 January

• File a nil return for a quarter with no activity: in the same window as every other quarter

• File a complementary return if you understated the tax: as soon as you find the error, since surcharges and interest apply after the deadline

Documents you need

• An electronic certificate or electronic DNI, or a Cl@ve PIN or Cl@ve permanente, to identify yourself on the tax agency's online office.

• A Spanish bank account if you want to pay by direct debit; otherwise a card for online payment or a payment reference (NRC) from a collaborating bank.

• Your sales and purchase invoices for the period, with the IVA by rate, to fill in the return.

Checklist

• Check which deadline applies to your quarter, and file earlier if you pay by direct debit.

• Log in to the tax agency's online office with your certificate or Cl@ve.

• Enter the IVA you charged by rate and the IVA you can deduct on your purchases.

• Choose how to pay, or whether to carry forward or claim back a negative result.

• File a nil return if you had no invoices or activity this quarter.

• Complete the annual summary boxes in the fourth-quarter return instead of filing modelo 390.

• File a complementary return if you paid too little, or ask for a rectification if you paid too much.

What to watch out for

• Skipping a quarter with no activity: If you are registered for IVA and file nothing for a quiet quarter, you can be fined for failing to file a mandatory return. File a nil return (sin actividad) every quarter, and deregister (baja) if you stop trading.

• Filing late: A late filing without a request from the tax agency is penalised as an infraction, and surcharges and interest can apply. File within the quarter's window, and earlier if you pay by direct debit.

Frequently asked questions

Do I still have to file the annual VAT summary (modelo 390)?

No, small autónomos in the general regime no longer file modelo 390 separately. The annual summary boxes are now part of the fourth-quarter modelo 303, so you complete them there.

Do I have to file modelo 303 for a quarter with no sales?

Yes, you must file a nil return (sin actividad) for every quarter while you are registered for IVA. Skipping it can bring a penalty, and the only exception is if you deregister (baja) or are not an IVA taxpayer.

Can I file my VAT return monthly instead of quarterly?

Only in certain cases: monthly filing is required for large companies, groups under the special group regime and users of the SII system. You can also choose it by joining REDEME, a voluntary register that allows monthly refunds.

What happens to a negative VAT result on my return?

A negative result can be carried forward to later quarters.