Spanish public pay hike enigma: a tax puzzle for 3 million

A salary boost agreed upon in 2022 but delayed until late 2025 has created a fiscal maze affecting hundreds of thousands of public sector workers in Spain.

Government's flexible payment plan sparks tax clarity call from authorities.

The extra 0.5% wage increase, meant to close the cycle of increments agreed with unions, was finally approved in December via a royal decree law allowing for flexible payment of arrears. The government activated the payment of this salary hike in the last days of 2025, but allowed administrations to make the payments even until 2028. This diversity of situations has compelled the Tax Agency to issue clarification on how these earnings should be declared in the upcoming tax campaign.

The Supreme Court has sided with public officials, ruling that performing superior functions consolidates their career and level - and they must pay taxes in 2025 even if they haven't yet received the increased salary.

In the case of the Spanish state sector (central government, public bodies and state-owned enterprises), the right to receive the increase arose in 2025. This means the increment must be included in the 2025 tax declaration, regardless of whether the money has been paid, is pending or still hasn't been received. The key lies in the deadlines.

According to the Tax Agency, if the arrears are settled before the start of the tax campaign (scheduled for April 8, 2026), they must be included in the declaration, even if they don't appear in the draft. If the payment is made after that date, the taxpayer will have to submit a supplementary or corrective declaration for 2025, which can be done within the ordinary deadline or, at most, by June 30, 2027.

However, the situation is different for regional and local administrations. In these cases, there was no identical obligation to attribute the payment to the 2025 tax year, as each administration has approved the mechanism for paying the arrears at different times. Here the fiscal criterion changes. Thus, the right to receive the increase arises when the corresponding administration approves the law allowing for the payment. This means the supplement may need to be declared in 2025, 2026 or even later tax years, depending on when the regulation and execution of the payment are made.

The impact of this puzzle is not insignificant. The pay hike affects around three million public sector workers in Spain, making it one of the most sensitive points of the tax campaign. For many contributors, the problem is not just when to declare the income, but how to do it correctly if it doesn't appear in the draft or if it's paid out of schedule. Tax experts warn that such situations require a special review of fiscal data and, in case of doubt, correcting the declaration to avoid errors or potential penalties.