The personal income tax return for the 2025 tax year comes with significant changes that should be understood before submission. The Spanish Tax Agency has introduced new measures affecting both how returns are filed and the deductions that may be applied, which can directly influence the final outcome. Below, we clearly and practically explain the key points to consider.
Changes to the self-assessment:
Improvements have been introduced to the tax return form with the aim of facilitating corrections and strengthening oversight:
– Cancellation of previously submitted returns: a new box allows taxpayers to void a return submitted in error when they were not required to file.
– Adjustment of self-employed contributions (RETA): as a result of the regularisation of RETA contributions from previous years, any differences will be reflected as a higher or lower deductible expense in the current tax year.
– Thermal Social Bonus: a specific box has been added to declare this public aid.
– Prizes (games, raffles and competitions): new boxes allow better identification of this
type of income, whether for promotional purposes or not.
– Mandatory control boxes: the system will include alerts that taxpayers must tick before submitting the return, requiring certain aspects to be reviewed.
Reductions:
– Removal under the objective assessment scheme (modules): reductions applicable for the purchase of agricultural diesel and fertilisers are eliminated.
This represents a reduction in tax benefits for those taxed under this regime.
Deductions from the gross tax liability:
– Energy efficiency improvements: the deadline for applying this deduction has been extended, encouraging home improvements.
– Electric vehicles and charging points: the deduction is extended until 2026.
– Gym or sports centre expenses: a new deduction of up to €100 per taxpayer.
– Coeliac disease: a new deduction to offset the higher cost of gluten-free products, up to €100 per affected family member diagnosed with the condition.
– Veterinary expenses: a temporary deduction of up to €100.
– Childcare (DAMA): an increase in the deduction for expenses in nurseries and authorised early childhood education centres, following an amendment to Article 69.9 of the Personal Income Tax Regulations as a result of Supreme Court Judgment 8/2004 of 8 January.
– Low employment income (≤ minimum wage): a deduction of up to €340 for lower- income earners.
Taxation of savings:
The tax rate increases to 30% for amounts exceeding €300,000 in the savings tax base. This measure increases the progressivity of the tax system for higher income levels.

