Modelo 145: Telling Your Employer Your Data for IRPF Withholding

Modelo 145 (“Comunicación de datos al pagador”) is the official form of the Spanish Tax Agency (AEAT). An employee tells their employer (or other payer) about their family situation: children and grandchildren, parents living with them, disability and court-ordered maintenance. The employer uses it to calculate the income tax (IRPF) withheld from the salary.

The form is given to the employer, not to the tax office. It has two pages — the employer’s copy and the employee’s copy; FoxDocs prints your data on both and does not change the official PDF layout.

• an employee or pensioner — to their employer or payer;
• before starting work or before 1 January, then whenever circumstances change; if a change increases withholding (e.g. a child no longer lives with you), report it within 10 days;
• it is not compulsory, but without Modelo 145 the withholding may be higher than due — the difference is refunded only after the annual tax return;
• false data is a tax offence fined by AEAT;
• the employer acknowledges receipt in section 7.

• section 1: NIF, surnames and name, year of birth; family situation 1, 2 or 3 (and the spouse’s NIF with situation 2); disability; moving for a new job; income generated over more than 2 years received in the last 5 years;
• section 2: children and grandchildren under 25 living with you — year of birth, year of adoption, disability, whether they live only with you (up to 4 rows);
• section 3: parents and grandparents over 65 living with you — year of birth, disability, how many descendants they live with;
• section 4: court-ordered compensatory pension to a spouse and child support, annual amount;
• section 5: loan payments for a main home bought or renovated before 2013 — only if total pay from all employers is under €33,007.20 a year;
• section 6: place, date and the employee’s signature; section 7 is completed by the employer.

• the completed and signed Modelo 145 in two copies;
• ID with NIE or DNI;
• if needed, the family book (libro de familia) or children’s birth certificates;
• a disability certificate;
• the court order on maintenance or spousal support.

1. Tell the chat in any language about your family: marriage, children and their years of birth, who lives with you.
2. The assistant chooses the family situation, puts children and parents on their rows and ticks the boxes.
3. Download the PDF, check it, sign both copies and give them to your employer.

Official Modelo 145, Agencia Tributaria: sede.agenciatributaria.gob.es — Modelo 145. Checked on 2026-10-09. This is not tax advice.