Form guide
Modelo 100: IRPF. Declaración anual (Renta)
Form 100 (IRPF. Declaración anual (Renta)) is filed with the Agencia Tributaria (AEAT, the Spanish Tax Agency). In 2026 it has 3 deadlines in the official calendar: the first falls due on 25 June 2026 and the last on 5 November 2026.
In a nutshell
- Filed with
- the Agencia Tributaria (AEAT, the Spanish Tax Agency)
- For those taxed in
- Mainland Spain and the Balearic Islands
- How often
- Annual
- Deadlines in 2026
- 3, from 25 June 2026 to 5 November 2026
- Official calendar consulted on
- 21 September 2026
Who files it
Text from the official source, in Spanish
Contribuyentes del IRPF obligados según el art. 96 LIRPF. Desde 2023, obligatoria en todo caso para quien haya estado de alta en el RETA (o RETM por cuenta propia) en cualquier momento del año, incluidos familiares colaboradores, sea cual sea su rendimiento.
Exceptions and special cases
Text from the official source, in Spanish
- Límites generales de no obligación (22.000 € de trabajo de un pagador, etc.) no aplican a quien estuvo en el RETA.
All its deadlines
Each row is a deadline from the official calendar: the last day to file. When that day falls on a Saturday, Sunday or public holiday, the calendar already moves it to the next working day.
| Period | Last day | Day |
|---|---|---|
| Renta 2025, a ingresar con domiciliación | 25 June 2026 | Thursday |
| Renta 2025 (presentación general; campaña desde el 8 de abril) | 30 June 2026 | Tuesday |
| Renta 2025, segundo plazo si se fraccionó el pago | 5 November 2026 | Thursday |
| Renta 2026 | 30 June 2027 * | Wednesday |
* Date worked out with the deadline rule, because the official calendar for that year has not been published yet. Check it when it comes out.
Every deadline of the year, month by month: 2026 tax calendar.
The same obligation with other tax authorities
What is declared here with form 100 goes on a different form, with different deadlines, at other tax authorities. Which one applies to you depends on where you are taxed, not on where you live.
Who would have it in their calendar
- Self-employed designer in Madrid: 2 deadlines in 2026.
- Plumber under modules in Zaragoza: 2 deadlines in 2026.
- Lawyer with an office in Valencia: 2 deadlines in 2026.
- Self-employed developer in the Canary Islands: 2 deadlines in 2026.
Official links
Where it is filed, its instructions and, if there is one, the file format for importing it. All on the website of the Agencia Tributaria (AEAT, the Spanish Tax Agency).
| For | Official link |
|---|---|
| File it | Modelo 100 (trámite) |
| Instructions and help | Manual Renta 2025: delimitación de la obligación de declarar |
| Instructions and help | Fechas de campaña de Renta y Patrimonio 2025 |
| File format | Esquema XSD Renta 2025 |
| File format | Diseños de registro modelos 100-199 |
| File format | Formatos electrónicos de los libros registro (importables en Renta WEB para estimación directa) |
Frequently asked questions
When is form 100 filed in 2026?
According to the official calendar of the Agencia Tributaria (AEAT, the Spanish Tax Agency): Renta 2025, a ingresar con domiciliación, by 25 June 2026; Renta 2025 (presentación general; campaña desde el 8 de abril), by 30 June 2026; Renta 2025, segundo plazo si se fraccionó el pago, by 5 November 2026.
Who has to file form 100?
According to the Agencia Tributaria (AEAT, the Spanish Tax Agency): “Contribuyentes del IRPF obligados según el art. 96 LIRPF. Desde 2023, obligatoria en todo caso para quien haya estado de alta en el RETA (o RETM por cuenta propia) en cualquier momento del año, incluidos familiares colaboradores, sea cual sea su rendimiento.”
What happens if I file form 100 late?
If you file it before the tax authority has asked you to and there is an amount to pay, there is a surcharge of 1% plus another 1% for each full month of delay, and of 15% plus interest after twelve months (art. 27 of the Ley General Tributaria, the General Tax Act). If there is nothing to pay, the general penalty is €200, which drops to €100 if you file without having been asked; for information returns it goes by the item of data (art. 198). The details are in the guide to missed deadlines.
Does Mis Obligaciones file form 100 for me?
No. Mis Obligaciones suggests it in your calendar with the reason, takes you to its official page and reminds you a week before and the day before. The filing is done by you, or your gestoría (tax adviser’s office), on the website of the Agencia Tributaria (AEAT, the Spanish Tax Agency).
Official sources
Where what this page says comes from, consulted on the review date. If something does not match, the source prevails.
- 2026 tax calendar for Mainland Spain and the Balearic Islands Agencia Tributaria
- Modelo 100 (trámite) Agencia Tributaria
- Manual Renta 2025: delimitación de la obligación de declarar Agencia Tributaria
- Fechas de campaña de Renta y Patrimonio 2025 Agencia Tributaria
- Esquema XSD Renta 2025 Agencia Tributaria
- Diseños de registro modelos 100-199 Agencia Tributaria
- Formatos electrónicos de los libros registro (importables en Renta WEB para estimación directa) Agencia Tributaria
Keep reading
- 2026 tax calendarThe 164 deadlines of 2026 in Mainland Spain and the Balearic Islands, month by month: the form, the period and the last day, copied from the official calendar. In .ics and .json.
- Filing lateWhat it costs to file a Hacienda form late or pay the Seguridad Social late: 1% per month, 15%, the €200 penalty and the 10% and 20% surcharges.
- Examples7 made-up profiles and the 2026 calendar that Mis Obligaciones’s rules give them: self-employed under direct assessment and under modules, companies, the Canary Islands, Bizkaia and Navarre.
- GlossaryWhat an autoliquidación, the 70% rule, REDEME, SII, IGIC, the Concierto Económico or RETA are, explained in two sentences with their official source.
This is information copied from official sources to help you find your way, not tax advice: your case may have exceptions. Check it on the authority’s website or with whoever advises you.
Your deadlines, and only yours
Tell Mis Obligaciones what you do for a living and it suggests your calendar for the year, each form with its reason. You review it, and it reminds you a week before and the day before.