Lorraine Williamson
The main deadline for online filing is 8 April to 30 June 2026. Those who want the tax office to prepare their return by phone can use that service from 6 May to 30 June, with appointments opening on 29 April. In-person help at tax offices begins on 1 June and also runs until 30 June, with those appointments available from 29 May. If you plan to pay by direct debit, the deadline comes earlier, on 25 June.
That earlier direct-debit date is one of the details people miss every year. The campaign itself runs to the end of June, but taxpayers who want the payment taken automatically from their bank account cannot leave it until the final few days.
What to sort out before Tuesday
The most useful thing readers can do now is check how they are going to access the system. The Agencia Tributaria says the campaign portal is already active and includes options to view fiscal data, register for Cl@ve, and obtain a reference number.
That reference matters because taxpayers using the RENØ route need a new reference for the 2025 campaign. To obtain it, the tax agency says you generally need the amount from box 505 of your 2024 return. AEAT also makes clear that box 505 refers to the general taxable base and not the final result of the return, which catches some people out.
Phone and office help is available later
For anyone who prefers guided help, the tax agency will once again offer both phone and face-to-face assistance. The “Le llamamos” phone service starts on 6 May, and office appointments begin on 1 June. AEAT also says taxpayers using the phone-assistance service should have their documents ready in advance, and notes that calls will come from 810520052.
There is also a basic tax-information helpline for doubts about completing the return. AEAT says that service is available on 91 554 87 70, Monday to Friday from 9.00 am to 7.00 pm.
A small but important detail for some self-employed filers
This year, there is a bit of extra small print for some freelancers and taxpayers on special regimes. In a note published on 1 April, the tax agency said that, despite two decrees not being ratified, certain 2026 limits for simplified VAT and agriculture, livestock, and fishing regimes remain in place, and it also flagged changes linked to objective estimation rules. That will not affect every return, but it is a reminder that some autónomos should double-check assumptions rather than simply repeating last year’s approach.
Why this is worth doing now
Renta stories rarely feel dramatic, but they are among the most useful pieces for readers living in Spain. The portal opens on Tuesday, yet the groundwork starts before then: access details, appointment dates, bank-payment deadlines, and reference numbers all matter more than people think. Readers who deal with those basics now usually make the whole process much less stressful later in the campaign.