Moving up IRPF brackets: strategies to optimize your tax return

Use the IRPF calculator with your current gross salary and simulate a 5-10% increase. If the effective rate rises more than 2 percentage points, you're in the risk zone. This simulation is especially important if you expect a salary increase, significant bonus, or have changed jobs during the year.

Critical brackets in 2026 are €35,200 and €60,000. If you're within €2,000 of these limits, plan ahead. These are the points where the state tax rate jumps from 12% to 15% and from 15% to 18.5% respectively, which can represent a substantial difference in your return.

Remember that IRPF is split 50/50 between state and regional brackets. This means changing state brackets can also affect your regional bracket, doubling the impact in some cases. Check the specific brackets of your autonomous community.

Pension plan contributions made before December 31st reduce the taxable base for the current year. Calculate how much you need to contribute to move down a bracket. This is the most efficient strategy because each euro contributed directly reduces your taxable base by 100%.

If you have capital income, consider reinvesting in products that tax in the following year to avoid saturating your current bracket. For example, selling loss-making stocks before year-end can offset gains and keep your taxable base in the current bracket.

Housing deductions remain available in 2026 for certain cases. If you purchased a habitual residence before 2013, you can continue deducting up to 15% of interest and up to €9,015 annually. This deduction can help you significantly reduce your taxable base.

Timing income can help you avoid changing brackets. If you expect extraordinary income such as asset sale or compensation, consider whether it's better to receive it in December or January based on your current tax situation.

On the other hand, some deductible expenses like health insurance premiums, NGO donations, or training expenses can be concentrated before year-end to maximize their tax impact in the current year.

If you have variable income from commissions or bonuses, negotiate with your company the possibility of splitting payments to avoid concentrating them in a single fiscal year. This can help you stay in a more favorable bracket.

The regional bracket can represent up to 50% of your total tax bill. Communities like Madrid have lower regional rates, while Catalonia or Basque Country have higher rates. If you have flexibility to change residence, this factor can be decisive.

Some communities offer specific deductions that can compensate for higher rates. For example, Basque Country has very generous rent deductions, while Madrid offers housing purchase deductions for young people.

If you move during the year, IRPF is calculated proportionally based on days lived in each community. This can significantly affect your final return, especially if communities have very different rates.

One of the most common mistakes is not updating withholdings after a salary change. If your salary increases during the year and you don't adjust withholding, you may face an unpleasant surprise in your tax return.

Another mistake is not considering the cumulative effect of several small incomes. A bonus here, an asset sale there, and suddenly you're in a higher bracket without having planned for it. Use the IRPF calculator regularly to monitor your situation.

Finally, many people forget that regional deductions must be explicitly requested in the return. If you don't check them, they won't apply even if you're entitled to them. Carefully review all available boxes in your community.