Thousands in Spain to receive Hacienda warning letters over tax returns

Thousands of taxpayers in Spain could soon receive a letter from Hacienda asking them to review their tax return after possible mistakes were detected in this year’s Renta campaign. Spain’s tax agency says around 130,000 warning letters will be sent in the coming weeks to people who may have submitted incorrect or incomplete information.

The first wave of letters is expected to start arriving from mid May, with a second round planned for June. In many cases, the issue involves taxpayers changing or modifying information that originally appeared in the draft provided by the tax office.

For anyone who has already filed their Renta in Spain, especially expats and self employed workers, Hacienda is now urging people to double check what they submitted before the tax agency launches a formal review.

Why Hacienda is contacting taxpayers after they filed their Renta

According to the Agencia Tributaria, the letters are designed to give people the chance to correct mistakes voluntarily before facing a later investigation or adjustment from the tax office.

The agency says the warnings will mainly target taxpayers who altered data already held by Hacienda when completing their declaration.

In practice, this could mean someone changed income information, deductions, property details or family circumstances without the modification matching the information already available to the tax agency.

Rather than automatically launching penalties or inspections, Hacienda says it wants citizens to ‘assess whether they should submit a complementary declaration’ based on the information the agency already has on file.

The strategy is not new.

Last year, more than 45,000 taxpayers corrected their tax return after receiving a similar warning letter from Hacienda. The tax office insists the aim is to reduce errors voluntarily and avoid more serious regularisation procedures later on.

The most common mistakes taxpayers make on Spain’s tax return

Hacienda is also warning taxpayers not to assume the draft declaration is automatically correct.

The agency says it does not always have access to every piece of information that citizens are legally required to include in their Renta.

Several areas are now under particular scrutiny this year.

The tax office says taxpayers should pay close attention to regional deductions, property ownership details and cadastral references linked to homes or rental properties.

People who experienced changes in family circumstances during the tax year are also being advised to review their declaration carefully.

Other areas frequently linked to errors include rental income, property sales, pension contributions, union fees, grants, subsidies, maternity related benefits and deductions linked to a main residence.

For many residents in Spain, especially foreigners unfamiliar with the tax system, these sections can become particularly confusing during the online filing process.

Mistakes do not automatically mean someone has committed fraud, but ignoring a warning letter from Hacienda could eventually lead to additional payments, interest charges or penalties later on.

Millions already filed their Spain tax return as refunds continue

The warning campaign comes as millions of people across Spain have already completed this year’s tax return.

According to the Agencia Tributaria, around 7.9 million declarations had been submitted by 6 May.

Of those, 6.3 million declarations resulted in refunds, while around 1.17 million taxpayers were required to pay additional tax.

The agency says refunds have already been issued to more than 4.4 million people, with over €3.1 billion returned so far.

Meanwhile, Hacienda has also launched its ‘Le Llamamos’ service, allowing taxpayers to complete their Renta over the phone with assistance from tax agency staff.

The service is particularly popular among older residents and people who struggle with the online system.

For many taxpayers, the message from Hacienda this year is simple. Do not rush through the draft declaration assuming everything is correct simply because it appears pre filled. The tax agency is watching much more closely once changes are made, and with 130,000 warning letters about to land in mailboxes, many people may soon discover their tax return is being reviewed more carefully than they expected.