# Understand your monthly fee

> How your monthly Social Security fee as an autónomo is worked out, including the flat fee for new autónomos and the 2026 brackets.

- Page: https://autonomo.eus/steps/monthly-fee
- Part: Part C: Become an autónomo
- For: Everyone
- Last checked: 14 October 2026

**Your monthly Social Security fee depends on the net income you expect to earn.** New autónomos who qualify pay a reduced flat fee of €88.64 a month for the first 12 months.

## The flat fee for new autónomos

- You pay €80 a month plus the 0.9% intergenerational equity charge (*MEI*): €88.64 in total, for 12 months.
- You get 12 more months at the same fee if your net income for the year stays below the minimum wage. Ask for the extension with the Import@ss service [Prórroga de la tarifa plana](https://portal.seg-social.gob.es/wps/portal/importass/importass/Categorias/Altas%2C+bajas+y+modificaciones/Bajas+y+modificaciones/Prorroga_tarifa_plana) (flat fee extension): press "Solicitar" (apply) before your first 12 months end. It is not automatic. If your income ends up at or above the minimum wage, you pay back the difference.
- To keep the extension, file your income tax return (*IRPF*) for the year. If you do not, Social Security uses a contribution base of €1,000 for that year.
- You qualify if you were not registered as an autónomo in the last 2 years, or 3 years if you had the flat fee before.
- People with a disability of 33% or more, and victims of gender violence or terrorism, get a longer reduction. The Social Security guide explains it.

## The normal fee

After the flat fee, your fee depends on your bracket. Take your expected monthly net income, minus a 7% allowance for expenses, and find your bracket below. Your fee is 31.5% of your contribution base, and you can choose any base inside your bracket.

To see your own figure, open the [Social Security fee simulator](https://portal.seg-social.gob.es/wps/portal/importass/importass/tramites/simuladorRETAPublico/inicio/) (*Calculadora de cuotas para autónomos 2026*). Pick the range of monthly net income you expect. It shows your fee and what each part pays for.

| Monthly net income | Lowest base | Lowest fee | Highest base |
| --- | --- | --- | --- |
| Up to €670 | €653.59 | €205.88 | €718.94 |
| €670 to €900 | €718.95 | €226.47 | €900 |
| €900 to €1,166.70 | €849.67 | €267.65 | €1,166.70 |
| €1,166.70 to €1,300 | €950.98 | €299.56 | €1,300 |
| €1,300 to €1,500 | €960.78 | €302.65 | €1,500 |
| €1,500 to €1,700 | €960.78 | €302.65 | €1,700 |
| €1,700 to €1,850 | €1,143.79 | €360.29 | €1,850 |
| €1,850 to €2,030 | €1,209.15 | €380.88 | €2,030 |
| €2,030 to €2,330 | €1,274.51 | €401.47 | €2,330 |
| €2,330 to €2,760 | €1,356.21 | €427.21 | €2,760 |
| €2,760 to €3,190 | €1,437.91 | €452.94 | €3,190 |
| €3,190 to €3,620 | €1,519.61 | €478.68 | €3,620 |
| €3,620 to €4,050 | €1,601.31 | €504.41 | €4,050 |
| €4,050 to €6,000 | €1,732.03 | €545.59 | €5,101.20 |
| Over €6,000 | €1,928.10 | €607.35 | €5,101.20 |

The lowest fee in the first bracket matches the [Social Security simulator](https://portal.seg-social.gob.es/wps/portal/importass/importass/tramites/simuladorRETAPublico/inicio/). The others are 31.5% of the lowest base. The highest possible base is €5,101.20, so the highest possible fee is €1,606.88.

## Changing your bracket

You can change your bracket up to 6 times a year with the Import@ss service [Base de cotización y rendimientos](https://portal.seg-social.gob.es/wps/portal/importass/importass/Categorias/altas%2C+bajas+y+modificaciones/bajas+y+modificaciones/bcrendimientos) (contribution base and income). Press "Solicitar modificación" (request a change) and enter your new expected income, your new base, or both.

| You ask in | The change starts on |
| --- | --- |
| January or February | 1 March |
| March or April | 1 May |
| May or June | 1 July |
| July or August | 1 September |
| September or October | 1 November |
| November or December | 1 January |

## The yearly correction

After each year, Social Security compares your fees with the income Hacienda reports. It refunds you if you paid too much, or asks you to pay the difference. For questions about this yearly correction (*regularización anual de cuotas*), call 919 087 067 or 901 203 040, Monday to Thursday 9:00 to 18:00 and Friday 9:00 to 14:30. For other questions about your fee, call 915 410 291 or 901 502 050, or see [how to contact Social Security](https://autonomo.eus/steps/offices#contact-social-security).

## Official sources

- [Social Security: guide for autónomos](https://portal.seg-social.gob.es/wps/portal/importass/importass/Colectivos/trabajo+autonomo/guia)
- [Social Security: bases and rates](https://www.seg-social.es/wps/portal/wss/internet/Trabajadores/CotizacionRecaudacionTrabajadores/36537)
- [Orden PJC/297/2026, contribution rules for 2026](https://www.boe.es/diario_boe/txt.php?id=BOE-A-2026-7296)
- [Social Security: fee simulator 2026](https://portal.seg-social.gob.es/wps/portal/importass/importass/tramites/simuladorRETAPublico/inicio/)
- [Import@ss: flat fee extension](https://portal.seg-social.gob.es/wps/portal/importass/importass/Categorias/Altas%2C+bajas+y+modificaciones/Bajas+y+modificaciones/Prorroga_tarifa_plana)
- [Import@ss: contact](https://portal.seg-social.gob.es/wps/portal/importass/importass/contacto)
- [Import@ss: change your base and income](https://portal.seg-social.gob.es/wps/portal/importass/importass/Categorias/altas%2C+bajas+y+modificaciones/bajas+y+modificaciones/bcrendimientos)

Next step: [Set up TicketBAI invoicing](https://autonomo.eus/steps/ticketbai.md)

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