
Every year, millions of Spanish workers confirm their borrador from the Agencia Tributaria without checking whether they have applied all the deductions they are actually entitled to — and in many cases they end up paying more tax than the law requires. This is not bad luck. It is a system that does not come looking for you. And right now, in 2026, the gap between what you owe and what you actually pay could be hundreds — or even thousands — of euros.
You Are Probably Leaving Real Money on the Table Right Now
Here is what most people never find out: the borrador that Hacienda sends you is a proposal, not a final bill. If you have doubts about which deductions to apply, you should review them before confirming it — the borrador does not always include all the deductions you are entitled to. You are the one responsible for adding what is missing. And what is missing, in millions of cases, is significant.
The Consejo General de Colegios de Gestores Administrativos estimates that accepting the borrador without reviewing it can cost up to 300 euros in lost deductions. That is 300 euros the state simply keeps because you clicked "confirm." But for workers with children, a mortgage signed before 2013, energy renovation works, disability in the family, or contributions to a pension plan, the amount left unclaimed can be far larger.
Each year, thousands of workers pay more IRPF than they should, simply because they do not know all the deductions they are entitled to. In 2026, Spanish tax law allows you to reduce your bill legally for multiple reasons: children, mortgage, rental, pension plans, donations, and many more — depending on your autonomous community. The question is: do you know which ones apply to you?
What the Law Actually Says
The legal foundation for all personal income tax in Spain is Ley 35/2006, of 28 November, the Ley del Impuesto sobre la Renta de las Personas Físicas (IRPF Law). This is the law that defines your deductions — and it is a long, technical document that most workers will never read. But the Agencia Tributaria applies it to your payslip every single month.
Before even applying the tax brackets, the Agencia Tributaria deducts a series of amounts considered untouchable because they cover the basic subsistence of the taxpayer and their family: the personal minimum of 5,550 euros in 2026, complemented by minimums for dependent children, cohabiting ascendants, and recognised disability situations. This is your floor. Below it, you pay nothing. Above it, you pay only on the excess — and even then, there are deductions that directly reduce what you owe.
On the resulting cuota, further deductions are applied: investment in a main residence — for the transitional regimes still in force — donations to entities covered by Law 49/2002, maternity, and a whole range of regional deductions that each autonomous community approves in its own legislation. The problem is that the state only knows about the deductions it can see. The ones it cannot see — the guardería receipts, the energy works certificate, the startup investment — you have to add yourself.
The Real Numbers for 2026
Every figure in this table has been verified from official sources for 2026.
| Category | Figure | Source |
|---|---|---|
| SMI (monthly, 14 payments) | 1,221 euros gross | BOE, Real Decreto 126/2026, 18 Feb 2026 |
| SMI (annual) | 17,094 euros gross | BOE, Real Decreto 126/2026 |
| SMI taxable in IRPF | 0 percent — fully exempt | La Moncloa / SEPE, Feb 2026 |
| IRPF bracket 1 (up to 12,450 euros) | 19 percent | Agencia Tributaria / taxdown.es 2026 |
| IRPF bracket 2 (12,451–20,199 euros) | 24 percent | Agencia Tributaria / taxdown.es 2026 |
| IRPF bracket 3 (20,200–35,199 euros) | 30 percent | Agencia Tributaria / taxdown.es 2026 |
| IRPF bracket 4 (35,200–59,999 euros) | 37 percent | Agencia Tributaria / taxdown.es 2026 |
| IRPF bracket 5 (60,000–299,999 euros) | 45 percent | Agencia Tributaria / taxdown.es 2026 |
| IRPF bracket 6 (above 300,000 euros) | 47 percent | Agencia Tributaria / taxdown.es 2026 |
| SS contribution — worker (contingencias comunes) | 4.70 percent | Orden PJC/297/2026, BOE 31 Mar 2026 |
| SS contribution — employer (contingencias comunes) | 23.60 percent | Orden PJC/297/2026, BOE 31 Mar 2026 |
| MEI — worker share | 0.15 percent | Orden PJC/297/2026, BOE 31 Mar 2026 |
| MEI — employer share | 0.75 percent | Orden PJC/297/2026, BOE 31 Mar 2026 |
| SS contribution ceiling (monthly) | 5,101.20 euros | Orden PJC/297/2026, BOE 31 Mar 2026 |
| Desempleo contribution — worker (indefinite contract) | 1.55 percent | Orden PJC/297/2026, BOE 31 Mar 2026 |
| Deducción por maternidad | 1,200 euros per child under 3 | Ley 35/2006, Art. 81 |
| Personal minimum | 5,550 euros | Agencia Tributaria 2026 |
| Pension plan reduction (individual) | up to 1,500 euros/year | Ley 35/2006 / Holded 2026 |
The Social Security contribution rate for common contingencies is maintained at 28.30 percent, of which 23.60 percent falls on the employer and 4.70 percent on the worker. For overtime, an additional specific contribution applies: 14 percent for force majeure overtime and 28.30 percent for all other overtime. Added to this is the Mecanismo de Equidad Intergeneracional (MEI), which in 2026 is set at 0.90 percent, split between 0.75 percent charged to the employer and 0.15 percent to the worker.
What this means in practice: if you earn 30,000 euros gross per year, you are paying around 1,935 euros to Social Security as a worker, plus IRPF on top. Before any deductions. That is why knowing every single deduction available to you is not a tax trick — it is simply taking back what the law explicitly gives you.
What Your Employer Will Never Tell You
This is where workers get caught out. Your employer handles the payslip. They apply the retention percentage based on the Model 145 form you filled in — probably years ago, probably without full information. If your personal situation has changed since then — a new child, a disability in the family, a house purchase — and you have not updated your Model 145, your employer is almost certainly overtaxing you every single month.
If you discover that the IRPF applied is not correct, you can speak to your Human Resources department or payroll manager to request that they adjust the percentage on future payslips. This costs you nothing. It takes one conversation. And it puts more money in your pocket from next month's pay. Do not leave this money on the table.
Here are three specific deductions that millions of workers fail to claim each year:
1. The maternity deduction and the guardería bonus. If you are a working mother with a child under 3 years old and the child attends a guardería, you can deduct up to 1,000 euros extra in addition to the 1,200 euros maternity deduction. The borrador does not always include it because the Agencia Tributaria needs the nursery to have communicated the data. If it does not appear, you can add it manually with the invoice from the nursery.
2. Energy efficiency renovation deductions. The energy efficiency renovation deductions did not expire on 31 December 2025. Real Decreto-ley 2/2026 extended them: individual home works (20 percent / 40 percent) until 31 December 2026, and whole-building energy renovation (60 percent) until 31 December 2027. If you made qualifying works in 2025, you declare them in this campaign. If you have planned works for 2026, they still count.
3. Pension plan contributions via your employer. The reduction limit on your taxable base for individual pension plans is 1,500 euros per year. If your employer also contributes to an employment plan, the joint limit rises to 8,500 euros. If your company offers a matched pension scheme and you are not enrolled, you are refusing tax-free money.
For disability deductions, if you have a dependent family member — parent or child — with a recognised disability, you can deduct between 1,150 and 2,550 euros depending on the degree of disability. This deduction is not always properly included in the borrador if the family member's data is not up to date in the AEAT census.
Spain vs The Rest of Europe
Spain's position in the European salary landscape is more nuanced than most headlines suggest. The SMI for 2026 is set at 17,094 euros gross annually, distributed across 14 payments of 1,221 euros per month, exempt from IRPF. Spain has the seventh highest minimum wage in the European Union. That sounds strong. But the comparison with neighbours tells a more complicated story.
In France, the minimum wage is set by the hour and in 2026 will be 12.02 euros per hour, equivalent to 1,823.02 euros per month with a 35-hour working week. Portugal is also seeing its minimum wage increased — rising from 870 euros in 2025 to 920 euros per month in 2026. On 1 January 2026, minimum wages in the EU ranged from 620 euros per month in Bulgaria to 2,704 euros in Luxembourg. Spain sits well above the European average, but significantly below the richer northern economies. What the raw numbers do not show is the tax burden. France taxes minimum wage earners more than Spain does — where, critically, people receiving the SMI are fully exempt from paying IRPF. That is a genuine advantage for Spain's lowest-paid workers that few other EU countries match at this income level.
Use the EuroDuty salary comparator to see exactly how your Spanish net salary compares to equivalent roles in France, Portugal, Germany, or any of the other 27 EU member states — in real, after-tax take-home terms.
How to Claim What You Are Owed
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Get your tax data report from the AEAT before confirming anything. Log in at sede.agenciatributaria.gob.es and download your complete datos fiscales for 2025. Compare every line with your own records — payslips, contracts, invoices. The borrador is built from what Hacienda already knows. What it does not know, you need to add.
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Update your Model 145 with your employer today. If you have had a child, been diagnosed with a disability, separated, bought a home, or had any major life change since you last filled it in, your withholding rate is probably wrong. Submit a new Model 145 to your HR or payroll department — available at agenciatributaria.es — and your net monthly salary will adjust from the following payslip.
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Check for unclaimed family and maternity deductions. Go into Renta Web and look at Annex C2 (family deductions). If you have children under 3 and paid nursery fees, check that the 1,000 euro guardería complement appears alongside the standard 1,200 euro maternity deduction. If it does not, add it manually using the nursery invoice as justification.
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Gather your energy renovation paperwork now. To have your deduction validated, you need an energy efficiency certificate (before and after the works) and full payment traceability — all payments must be made by bank transfer, card or nominative cheque. Cash payments are absolutely prohibited and will cost you the entire deduction.
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Review your autonomous community's deductions separately. Regional deductions vary by community and can include benefits for childbirth, rental, disability, or home investment. To apply them correctly, you must review the specific section for your community within Renta Web or consult the current regional legislation. Madrid, Andalucía, and Cataluña each have their own rules — and they are not interchangeable.
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Use the EuroDuty calculator to know your exact net. Before you do anything else, get a clear picture of what you should actually be taking home. The EuroDuty salary calculator applies the verified 2026 IRPF brackets, Social Security rates, and key deductions to your gross salary — for free, instantly, without registration.
Calculate your exact net salary and compare your rights across all 27 EU countries at EuroDuty — completely free.
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