“Many decisions can be made before the end of the year”

In the spring of 2026, Spanish taxpayers will have to present the personal income tax return corresponding to this year’s fiscal year 2025. Although it may seem distant, if you want to save a lot of money on taxes, the time to act is before the end of the year, so There is only one month left to make decisions.

Currently, the current obligation to file the Income Tax return is set to have some income greater than 22,000 euros per year in the case of salaried taxpayers with a single payer or 15,876 euros annually in the case of two or more payers.

For those who present the Income Tax, the Organization of Consumers and Users (OCU) has offered a series of tips to be able to pay less taxes in the personal income tax return in 2026. “There are many decisions that can be made before the end of the year to help reduce the tax rate of the next income tax return,” says the OCU, which points out that “many are related to investments, but also to such everyday issues as housing or salary.”

First of all, this group of consumers draws attention to the pension plansan “interesting contribution for those who obtain income that comes from work, but also from professional or business activities and property rentals (as long as they also have income of the two previous types) for which they are taxed in personal income tax.”

Thus, the OCU specifies that the reduction of the general tax base for the amounts contributed to pension plans, social security mutual societies, insured pension plans, corporate social security plans, private dependency insurance, is limited to “30% of the sum of the net income from work and economic activities received individually in the year” or the “1,500 euros per year, which increases by 8,500 euros” for business plans.

You also have to pay attention to the regional deductionswhich vary depending on the region. You have to consult them in detail because you can deduct everything from children’s educational expenses to public transport passes or rent. “It is very important to make sure first of all of the regional tax deductions to which you are entitled, since each autonomous community has its own. If one fits you, take steps to be able to put it into practice, for example, requesting and keeping the supporting documents that you may be asked for later to prove that you were entitled to the deduction.”

60% deduction on energy efficiency works

For their part, in terms of housing, “taxpayers who in their community of owners or in their single-family home carry out works in 2025 that improve the efficiency of the property will be able to deduct 60% of the amount paid (discounting public aid received) on a maximum base of 5,000 euros“.

Yes indeed: The works must reduce energy consumption by at least 30% non-renewable primary component of the building or that grant classification A or B, have not been able to be paid in cash and must have an energy efficiency certificate prior to the works and another subsequent one that is prior to January 1, 2026, that are registered and that proves the improvement.

Another tax deduction related to housing is the amortization of the mortgage. “Those who bought their habitual residence financed before 01/01/2013 may apply a 15% deduction on what they have paid in 2024 for the loanup to a maximum of 9,040 euros per year per declaration. Therefore, if the sum of the annual installments does not reach the amount of 9,040 euros, and the taxpayer has sufficient savings, it is advisable to make early repayments until the aforementioned figure is reached,” explains the OCU.

Up to €3,000 for the purchase of a new electric car

For those who are thinking about changing cars, for the purchase of a new 100% electric vehicle and the installation of charging points for private use carried out in 2025, if certain requirements are met, is allowed deduct in the income tax return 15% of what was paid over a maximum of 20,000 euros in the case of vehicles – which means a reduction in personal income tax of 3,000 euros – and 4,000 euros for charging points.

On the other hand, donations to NGOs, foundations and non-profit entities “This year they deduct 80% on the first 250 eurosand 40% on what exceeds that amount; This percentage rises to 45% for donations to entities to which it had already been donated in 2023 and 2024, equaling or increasing the amount from year to year.

For people with serious or chronic health problems or who have dependent descendants or ascendants, the OCU advises “requesting the disability certificate before the end of the year because if a disability rating of 33% or more is awardedstate and regional disability minimums, reductions and deductions may be applied.

Offset capital gains and losses

Finally, if during this year 2025 profits have been made and, in turn, losses accumulate in other investments, these losses could be materialized to offset them with the profits. However, it must be taken into account that “The Treasury does not allow the compensation of losses generated by donations”so the OCU advises in order to compensate for these losses “sell the asset and donate the money obtained.”

Furthermore, “if the taxpayer wants to maintain an investment, but wants to bring his losses to light for tax purposes, You should not make the mistake of selling and repurchasing -as a general rule, within two months-, since the regulations prevent taking advantage of losses from repurchases of ‘homogeneous securities'”.

Finally, OCU warns that “The next declaration will be the last in which you can offset the balance of pending losses for 2021”so “before the end of the year you can sell investments with an equivalent profit to take advantage of it.”

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