About the document
- Who files:
- Widow/widower or partner, orphans, relatives of the deceased; funeral grant — whoever paid
- Where to submit:
- Social Security e-office, run.gob.es, post or INSS centre (CAISS) by appointment
- Authority:
- Instituto Nacional de la Seguridad Social (INSS)
- Country:
- Spain
- Category:
- Social Security and pensions
- How to fill:
- Chat in any language → original form → PDF
- Price:
- form free · chat €8 per document
- Last updated:
- Official source:
- https://www.seg-social.es/descarga/es/34893
What this document is
MS-3 (“Solicitud de prestaciones de supervivencia”) is the official form of Spain’s National Social Security Institute (INSS). One form covers every benefit after an insured person dies: widow’s pension (viudedad), orphan’s pension (orfandad), family members’ benefit (favor de familiares) and the funeral grant (auxilio por defunción). Only the sections for the benefits you claim are filled in.
If the deceased worked in the EU, Switzerland, Norway, Iceland, Liechtenstein or a country with a bilateral agreement, the form warns that a different form may apply.
Who files and where
- the widow or widower, and also a former spouse, a spouse of an annulled marriage or a registered partner (pareja de hecho), under the conditions set out in the form’s instructions;
- orphans — themselves or through a parent, guardian or representative;
- relatives who lived with the deceased for the last two years and depended on them;
- funeral grant — whoever paid for the funeral;
- filing — online at the Social Security e-office (certificate or Cl@ve), via run.gob.es, by post or at an INSS centre (CAISS) by appointment.
What the form asks
- the applicant, a parent/guardian or representative if any, the address and tax data for IRPF withholding;
- the deceased: personal details, date and cause of death;
- the deceased’s children — for the childcare benefit and the gender-gap supplement;
- widow’s pension: relationship with the deceased (declaration), marriage or partnership dates, income, dependent children;
- orphan’s pension: each orphan, their income and address; family members: each beneficiary and the relatives living with them;
- bank account (BIC and IBAN), consents and signature.
What to bring
- ID of the applicant and of everyone named in the form (DNI, TIE or passport and NIE);
- the death certificate;
- widow’s pension — proof of marriage or partnership; after a divorce — the court ruling and the compensatory pension document;
- orphan’s pension — the children’s birth certificates; family members — proof of kinship and living together;
- the full list is on the last pages of the form; check it at the office or on the Social Security website.
How to fill it in with FoxDocs
- Tell the chat how you are related to the deceased and which benefits you claim.
- The assistant fills in only the relevant sections, ticks the boxes and writes sex and marital status as Spanish words.
- Download the PDF, check it, sign it and file it with INSS.
Source
Official INSS form MS-3, Spanish Social Security: seg-social.es — Prestaciones de supervivencia (MS-3). Checked 2026-10-09. This is not legal advice.