- What starts the clock
- la fecha del hecho causante (the date of the triggering/qualifying event for the pension)
- How long
- Application filed more than three months after the hecho causante: retroactive effects are capped at three months, counted back from the date the application is filed.
- What is lost
- los efectos serán retroactivos durante un máximo de tres meses desde la fecha de la solicitud (the pension's economic effects are backdated only three months from the date of the application, meaning any part of the delay beyond three months is not paid retroactively)
The applicant nominates the effective date (hecho causante) of the retirement pension, and that date must fall within three months either side of the application. Payable retroactivity is capped at three months from the application, so a pension applied for more than three months after the nominated date is paid back only three months from the application, not from the nominated date itself. Corrected 3 October 2026 against seg-social.es.
What the source does not say
The page as fetched does not cite a specific Ley General de la Seguridad Social article number for this three-month cap; only the operative rule text was retrievable, not a statute cross-reference on the same page.