Reducción por inicio de actividad: the 20% reduction many autónomos miss

Many autónomos overpay by thousands of euros in their first profitable year because neither they nor their gestor applies a reduction the Ley del IRPF itself grants them: 20% on the positive rendimiento neto for the first two profitable years of activity. If you've just started out or you're still in your early years as an autónomo, this reduction can mean significant savings.

What is the reducción por inicio de actividad?

The reducción por inicio de actividad is a 20% reduction on the positive rendimiento neto of your economic activity, regulated by article 32.3 of Ley 35/2006 del IRPF. Its purpose is to ease the tax burden in the early years of a new activity, when income tends to be more uncertain and startup costs are higher.

The reduction applies directly to the rendimiento neto before calculating the IRPF taxable base, which lowers the brackets at which the autónomo is taxed. If you want to understand how those brackets work, check out the guide on IRPF brackets for autónomos.

When and for how long does it apply?

The reduction applies over two fiscal years:

1. The first fiscal year in which the rendimiento neto of your activity is positive.
2. The immediately following year after that first profitable year.

One important detail: if in the year you registered your activity you had losses or zero rendimiento neto, that year doesn't count. The two-year clock only starts when there's actual profit.

Example: Ana registers as an autónoma in October 2024. In 2024 she has negative rendimiento neto (startup costs). In 2025 she earns her first positive rendimiento neto. The reduction applies in 2025 and 2026.

Who can apply it? Conditions

To benefit from this reduction, all of the following conditions must be met:

1. Be on estimación directa

The reduction is exclusive to the estimación directa regime (normal or simplified). Autónomos who pay tax under módulos (estimación objetiva) cannot apply it. If you're unsure which regime suits you, read the comparison estimación directa vs. módulos.

2. Be a genuine start of activity

You must not have carried out any economic activity in the year before starting the new one. If you were already an autónomo last year - even with a different activity - you can't apply the reduction for the new one. That said, prior activities in which you stopped without ever having obtained positive rendimiento neto don't count against you.

What if you were running an activity abroad before moving to Spain? The Dirección General de Tributos is clear on this: if you were already carrying out the same economic activity in your previous country of residence (for example, a Ukrainian FOP who keeps billing for the same work after relocating), Hacienda considers there's no genuine start of activity - just a continuation - and the reduction doesn't apply. If you start a genuinely new and different activity in Spain, having had an unrelated activity abroad shouldn't prevent the reduction, but it's worth confirming with an advisor based on your specific situation.

3. Base limit of 100.000 € per year

The 20% reduction applies to a maximum base of 100.000 € of annual rendimiento neto. If the rendimiento neto exceeds that figure, the excess doesn't benefit from the reduction.

4. Income must not come mostly from a former employer

The reduction doesn't apply if more than 50% of the activity's income comes from a person or entity from whom the taxpayer received rendimientos del trabajo in the year before starting. This prevents a salaried employee who switches to invoicing their same company from claiming the reduction, since Hacienda considers there's no genuine start of activity.

Practical example with figures

Let's say Carlos starts as an autónomo in 2025, meets all the requirements, and gets the following figures in his first profitable year:

Item	Amount
Activity income	42.000 €
Deductible expenses	12.000 €
Rendimiento neto	30.000 €
20% reduction (art. 32.3 LIRPF)	-6.000 €
Reduced rendimiento neto	24.000 €

Carlos pays tax on 24.000 € instead of 30.000 €. With an effective average IRPF rate of 20%, that's a direct saving of roughly 1.200 € in that year alone. The same calculation would repeat the following year.

How does it interact with the quarterly Modelo 130?

The reducción por inicio de actividad is a reduction of rendimiento neto in the annual IRPF and materializes in the Declaración de la Renta (Modelo 100).

In Modelo 130 - the quarterly pago fraccionado - this 20% reduction doesn't apply. The official instructions for Modelo 130 only allow you to reduce the rendimiento neto of the pago fraccionado by the reductions in article 32.1 of the Ley del IRPF (the 30% one for income generated over more than two years), but not by the reducción por inicio de actividad, which is regulated by article 32.3. So during the year you pay Modelo 130 on your full rendimiento neto, without deducting that 20%.

The practical consequence is that even though you pay Modelo 130 on your full rendimiento neto during the year, when you file your annual Renta the taxable base is reduced by 20%, which generates a refund or a lower amount to pay. It's an adjustment that gets settled at year-end.

Your gestor didn't apply it? How to claim it

If you filed your Declaración de la Renta for a year when you were entitled to this reduction and your gestor didn't include it, you can correct it. The process is to file an autoliquidación rectificativa of the Renta for the relevant year with the AEAT.

The deadline to do so is the tax prescription period: four years from the end of the voluntary filing deadline for that Declaración de la Renta. For the 2021 Renta (filed until June 2022), the deadline expires in June 2026.

If the reduction wasn't applied in both eligible years, each one can be corrected separately, as long as they haven't prescribed. The usual outcome is a refund of the excess IRPF paid plus the corresponding late-payment interest in the taxpayer's favor.

Summary: when it applies and when it doesn't

Condition	Does the reduction apply?
Estimación directa, first profitable year, no prior activity	✓ Yes
Estimación directa, second profitable year (after the first)	✓ Yes
Módulos (estimación objetiva)	✗ No
Had another economic activity the previous year	✗ No
More than 50% of income from former employer	✗ No
Rendimiento neto exceeds 100.000 € (on the excess)	✗ Doesn't apply to the excess

If you want to make sure you're applying all available reductions and deductions, RadarFiscal helps you track your quarterly obligations so you never miss a deadline.

Official sources

• Ley 35/2006, de 28 de noviembre, del Impuesto sobre la Renta de las Personas Físicas, article 32.3 - reducción por inicio de actividad económica.
• AEAT - Manual Práctico de Renta (rendimientos de actividades económicas) - section on reductions applicable to rendimiento neto in estimación directa.