Income Tax Campaign 2025-2026: key dates and news you should know

 

The Income Tax Campaign 2025-2026 begins

Starting on April 8,2026, you can already check the draft and file your Income Tax return through WEB Income Tax.

Although many people wait until the last weeks to file their return, it is highly recommended to review the draft as soon as possible. This allows you to detect possible errors, complete pending information, and better plan the outcome of the return if it results in a payment.

Key dates of the Income Tax Campaign

These are the main dates you should keep in mind:

April 8,2026

April 29,2026

May 6,2026

May 29,2026

June 1,2026

June 25,2026

June 29,2026

June 30,2026

Ways to file the return

Taxpayers can choose from different options:

Online filing

Available from the beginning of the campaign through Renta WEB or the Tax Agency's mobile application.

Phone filing

Through the "We Call You" service, upon appointment request.

In-person filing

At the Tax Agency's offices by appointment.

News of the 2025-2026 Income Tax Campaign

One of the main novelties of this tax year is the incorporation of Artificial Intelligence tools to assist taxpayers during the preparation of their return.

These systems can detect possible errors, inconsistencies, or omissions in the entered data and generate alerts before filing.

Furthermore, the Tax Agency will use these systems to identify potential taxpayers required to file who have not yet submitted their return, thus facilitating voluntary compliance with tax obligations.

However, all actions continue to have human oversight, ensuring legal certainty and avoiding fully automated decisions.

What happens with pending refunds?

The Tax Agency has a maximum period of six months from the end of the campaign to issue the corresponding refunds.

If the refund is processed after that period, the Tax Office must pay the corresponding late payment interest to the taxpayer.

Recommendations before submitting the tax return

Before confirming the draft, it is advisable to carefully review:

• Changes in family or work situation.

• Income from work with multiple payers.

• Real estate transactions carried out during the tax year.

• Capital gains or losses.

• Financial investments.

• International mobility situations.

• Applicable regional deductions.

A prior review can prevent errors and possible subsequent requirements from the Tax Administration.

The 2025-2026 Income Tax Campaign is already underway, and knowing the deadlines, news, and different ways of filing is essential to avoid issues. Reviewing the information in advance and submitting the return on time remains the best strategy to comply correctly with tax obligations and avoid last-minute surprises.