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IMSS Old-Age Pension Application Mexico (Solicitud de Pensión IMSS por Vejez)

IMSS Old-Age Pension Application Mexico (Solicitud de Pensión IMSS por Vejez)

SOLICITUD DE PENSIÓN POR VEJEZ / CESANTÍA EN EDAD AVANZADA

Instituto Mexicano del Seguro Social — Subdelegación Competente

Ley del Seguro Social Artículos 154–165

I. DATOS DE IDENTIFICACIÓN DEL TRABAJADOR

Nombre completo: [Worker Name]

NSS (Número de Seguridad Social): [Worker NSS]

CURP: [Worker CURP]

RFC: [Worker RFC]

Fecha de nacimiento: [Worker DOB]

Domicilio particular: [Worker Address]

II. CAUSAL DE PENSIÓN Y ANTECEDENTES LABORALES

Causal solicitada: [Pension Cause]

Semanas de cotización reconocidas: [Recognized Weeks]

Último patrón registrado: [Last Employer]

Registro patronal del último patrón: [Employer Registration]

El suscrito solicita al Instituto Mexicano del Seguro Social el inicio del procedimiento de reconocimiento de derechos (reconocimiento de semanas cotizadas) y la expedición de la resolución de pensión correspondiente, en términos de los Artículos 154 y 162 de la Ley del Seguro Social.

III. ELECCIÓN DE RÉGIMEN (GENERACIÓN TRANSICIÓN)

[Regime Election]

El suscrito declara haber recibido del IMSS el cálculo comparativo de ambos regímenes y manifiesta la elección indicada, con pleno conocimiento de su carácter irrevocable conforme a los artículos transitorios de la Ley del Seguro Social de 1995.

IV. AFORE Y CUENTA BANCARIA PARA DEPÓSITO DE PENSIÓN

AFORE administradora: [AFORE Name]

Banco: [Bank Name]

CLABE interbancaria: [Bank CLABE]

V. BENEFICIARIOS DE PENSIONES DE SOBREVIVENCIA (LSS ARTS. 64–84)

[Survivor Beneficiaries]

VI. DECLARACIÓN Y FIRMA

El suscrito manifiesta bajo protesta de decir verdad que los datos e información proporcionados son correctos y que cuenta con la documentación de soporte requerida por el IMSS para la presente solicitud.

En [Application City], a [Application Date].

Nombre: [Worker Name]

Firma del trabajador: _________________________

Recibido por el IMSS — Subdelegación: _________________________

Funcionario IMSS: _________________________ Sello: _________________________

Fecha de recepción: _________________________

Worker / Retiree (Trabajador / Pensionado)

________________

Signature

IMSS Officer (Funcionario IMSS Subdelegación)

________________

Signature

Maintained by Vladislav Sergienko, Founder·Template last modified: ·Report an error

What Is a IMSS Old-Age Pension Application Mexico (Solicitud de Pensión IMSS por Vejez)?

An IMSS Old-Age Pension Application Mexico (Solicitud de Pensión por Vejez del IMSS) is the formal written request filed by a worker — or their authorized representative — at the Subdelegación del Instituto Mexicano del Seguro Social (IMSS) competent for the worker's last registered employer or place of residence, initiating the recognition of contribution weeks (semanas de cotización) and the calculation and granting of a monthly retirement pension under the vejez (old-age) or cesantía en edad avanzada (early retirement) insurance branches of the IMSS compulsory social security scheme. The primary legal instrument governing IMSS old-age pensions is the Ley del Seguro Social (LSS) published in the Diario Oficial de la Federación on 21 December 1995, with Articles 154 through 165 establishing the eligibility conditions, benefit calculations, and procedural requirements for the ramo de retiro, cesantía en edad avanzada y vejez (RCV insurance branch).

The IMSS was established by the Ley del Seguro Social of 19 January 1943, which created Mexico's comprehensive social security system covering enfermedad y maternidad (healthcare and maternity), riesgos de trabajo (occupational risk), invalidez y vida (disability and life insurance), retiro, cesantía en edad avanzada y vejez (retirement and old-age — RCV), and guarderías y prestaciones sociales (childcare and social benefits). The RCV branch is the pension arm of the IMSS system, and its funding and benefits differ fundamentally depending on whether the worker began IMSS contributions before or after 1 July 1997 — the effective date of the structural pension reform that introduced individual retirement accounts (cuentas individuales) administered by AFOREs.

For workers with IMSS registration before 1 July 1997 (generación transición), the old LSS of 1973 established a defined benefit (beneficio definido) pension calculated as a percentage of the average salary of the final five years of contributions, using an actuarial table that awards higher replacement rates for workers with longer contribution histories — up to 100% of average salary for 35 years of contributions. These workers retain the right to elect the 1973 regime (derecho de selección) at retirement, which means the IMSS calculates the pension under the old formula and uses the AFORE subcuenta RCV balance to help fund it through the Fondo Nacional de Pensiones (FONAPEN).

For workers who entered IMSS for the first time after 1 July 1997 (generación AFORE), pension benefits derive from the cuenta individual balance accumulated in their AFORE, with the IMSS role being limited to: verifying contribution week eligibility (1,250 weeks minimum under LSS Article 162); issuing the resolución de pensión confirming eligibility; and guaranteeing the pensión mínima garantizada (one general minimum wage monthly) under LSS Article 170 when the cuenta individual balance is insufficient. The actual pension disbursement is made by the AFORE or an aseguradora depending on the modality elected by the worker.

The IMSS pension application triggers the formal administrative process of reconocimiento de derechos — the official counting and verification of all weeks of contributions registered in the worker's NSS (Número de Seguridad Social) across all employers throughout their working life, including contributions made under different employer registration numbers (registros patronales) that must all be linked to the single NSS. Contributions registered under erroneous or multiple NSS numbers (numbers issued in error before the unified CURP system) can be corrected through an aclaración de semanas process at the Subdelegación IMSS before filing the pension application.

When Do You Need a IMSS Old-Age Pension Application Mexico (Solicitud de Pensión IMSS por Vejez)?

An IMSS Old-Age Pension Application Mexico is needed when a formally employed worker has reached the statutory retirement age and minimum contribution week threshold required to receive a monthly pension from the Instituto Mexicano del Seguro Social. Filing the application is the mandatory first procedural step — no pension payments are made retroactively for periods before the application date except in limited circumstances, so timely filing is financially important.

The application is required when a worker reaches age 65 with 1,250 or more weeks of recognized IMSS contributions (vejez pension under LSS Article 162). At 65, the worker may continue working or retire, but pension rights activate only upon filing. There is no automatic enrollment — the worker must actively initiate the application at the Subdelegación IMSS responsible for their last employer's registration.

The application is also required when a worker aged 60 to 64 permanently stops working and has 1,250 contribution weeks (cesantía en edad avanzada under LSS Article 154). Cesantía requires documentary evidence of employment cessation — a formal baja (deregistration notice) from the IMSS system submitted by the last employer through IDSE (IMSS Desde Su Empresa) portal, or self-declaration of cessation in the absence of formal notice. Without the IMSS pension application, the worker cannot access their AFORE cuenta individual balance for pension conversion under Ley del SAR Article 37.

For generación transición workers evaluating the derecho de selección between the 1973 and 1997 regimes, the IMSS application process includes a mandatory comparative calculation — the Subdelegación must provide both regime projections before the worker irrevocably elects. The application initiates this calculation.

Workers who do not reach 1,250 weeks must also file an application — the IMSS issues a negativa de pensión (formal denial) that is required by the AFORE to process the lump-sum withdrawal of the subcuenta RCV balance under Ley del SAR Article 39. Without the IMSS negativa, the AFORE cannot release the retirement savings.

Family members or legal representatives of workers who die during active employment or after reaching retirement age must also file a pension application to claim survivor pensions (pensión de viudez, orfandad, or ascendientes) under LSS Articles 64–84 — the application process is similar but requires additional documentation proving the family relationship and financial dependence.

What to Include in Your IMSS Old-Age Pension Application Mexico (Solicitud de Pensión IMSS por Vejez)

A valid IMSS Old-Age Pension Application under LSS arts. 154–165 must contain the following essential elements for the Subdelegación IMSS to open the reconocimiento de derechos process and issue the pension resolution.

Worker Identification: Full legal name, NSS (Número de Seguridad Social assigned by IMSS — 11 digits), CURP (Clave Única de Registro de Población — 18 characters), RFC (Registro Federal de Contribuyentes), and current home address. The NSS is the central identifier that links all contribution history across all employers throughout the worker's career. If the worker has been assigned multiple NSS numbers (a common issue for workers who changed employers before the CURP unification), an NSS unification request (unificación de NSS) must be filed at the Subdelegación before the pension application to ensure all weeks are counted.

Official Identity Documentation: Valid original INE/IFE electoral credential (credencial para votar) or current passport; CURP certificate issued by RENAPO; and birth certificate (acta de nacimiento) issued by the Registro Civil confirming date of birth and nationality. For generación transición workers, the birth certificate is particularly critical to verify the age eligibility for the 1973 regime pension formula.

Proof of Last Employment and Contribution History: Certificates of employment (constancias de trabajo) or payroll receipts (recibos de nómina) from the last employer; IMSS employer registration number (registro patronal) of the last employer; and the worker's Historial Laboral printed from the portal imss.gob.mx/tramites confirming all registered contribution periods. Where contribution history is incomplete in IMSS records, employment verification letters from past employers or tax authority records (SAT employment income declarations) may be submitted to support an aclaración de semanas request.

Age and Retirement Modality: Clear statement of age (supported by birth certificate) and the pension modality being requested — vejez (age 65+) under LSS Article 162 or cesantía en edad avanzada (age 60–64 with employment cessation) under LSS Article 154. For cesantía applications, evidence of employment cessation is required: IMSS baja notice submitted by the employer, or in the absence of employer compliance, a self-declaration before the Subdelegación IMSS officer.

AFORE Account Information: Name of the AFORE administering the worker's cuenta individual, cuenta individual number, and accumulated balance (available from the AFORE's portal or annual estado de cuenta). This information is required by IMSS to coordinate the pension modality selection and fund transfer authorization under Ley del SAR Article 37. The AFORE's CONSAR registration number must also be stated.

Regime Election (Generación Transición Only): For workers with pre-1997 contributions who qualify for the derecho de selección, a formal written election (elección de régimen) stating whether the worker chooses the 1973 LSS defined benefit regime or the AFORE-based 1997 regime. This election is irrevocable once signed and filed with the IMSS.

Beneficiary Information: Names, relationships, CURP, and current domicile of all potential beneficiaries entitled to survivor pensions under LSS Articles 64–84 — spouse or concubine, children, and financially dependent parents — with supporting documentation (marriage certificate, birth certificates, dependency proof).

Forms-legal.com provides this IMSS Old-Age Pension Application Mexico template as a practical guide for initiating retirement proceedings. Given the complexity of contribution week verification, regime election consequences, and pension modality selection, workers are strongly advised to consult with a CONSAR-registered Asesor en Estrategias de Retiro (AER) and to obtain guidance from the IMSS orientación al derechohabiente service available free of charge at all Subdelegaciones IMSS and through the portal imss.gob.mx.

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Forms Legal. (2026). IMSS Old-Age Pension Application Mexico (Solicitud de Pensión IMSS por Vejez) (Mexico) [Legal document template]. Forms Legal. https://forms-legal.com/mexico/personal/legal-declarations/imss-old-age-pension-application-mexico

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"IMSS Old-Age Pension Application Mexico (Solicitud de Pensión IMSS por Vejez) (Mexico)." Forms Legal, 2026, https://forms-legal.com/mexico/personal/legal-declarations/imss-old-age-pension-application-mexico.

BibTeX
@misc{formslegal-imss-old-age-pension-application-mexico,
  author       = {{Forms Legal}},
  title        = {IMSS Old-Age Pension Application Mexico (Solicitud de Pensión IMSS por Vejez) (Mexico)},
  year         = {2026},
  howpublished = {\url{https://forms-legal.com/mexico/personal/legal-declarations/imss-old-age-pension-application-mexico}},
  note         = {Free legal document template}
}

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