Procedure 6: request additional pension supplements (INSS)

What you need to have ready

1. Cl@ve, certificado digital or DNIe that works. Without one you’ll use the form without certificado (slower).
2. Resolución de tu pensión and your bank details.
3. Key documents depending on the complemento:
   • Mínimos: your and the economic unit’s incomes (pay slips, interest, rents, IRPF, other pensions).
   • Brecha de género: Libro de familia or certificaciones literales of birth; court rulings if custody is an issue.
   • IPT +55 (20% extra): vida laboral, DARDE or proof that you don’t work and your employment situation.
4. Volante o certificado de empadronamiento colectivo recent if you must prove cohabitation.

Documentation

• DNI/NIE of the beneficiary and of the spouse/partner (if they count in the economic unit).
• Resolución of your pension (complete PDF, all pages).
• Libro de familia or certificaciones literales de nacimiento (brecha de género). If foreign, traducción jurada and Apostilla de La Haya.
• Proofs of income: pay slips, pensions, rents, bank interest, IRPF/withholdings.
• Vida laboral and DARDE if you apply for the 20% IPT and you aren’t working.
• Volante o certificado de empadronamiento colectivo if you need to prove cohabitation/residence.
• IBAN if you change the payment account.

Step by step

1. Access the Sede Electrónica de la Seguridad Social (sede.seg-social.gob.es) with Cl@ve/certificado.
2. Go to Tu Seguridad Social → Pensiones and open your expediente. Use “Complementos” or “Comunicar variaciones” if available.
3. If it’s not there, go to “Presentación de otros escritos, solicitudes y comunicaciones (INSS)” and choose INSS as the organism.
4. In the message, state clearly: “Complemento a mínimos”, “Complemento para la reducción de la brecha de género” or “Incremento del 20% en IPT (>55)” and add a brief summary (cohabitation, incomes, children, not working, etc.).
5. Attach the PDFs: DNI/NIE, resolución, Libro de familia/certificates, income proofs and everything relevant. Make sure files are clear and not too big.
6. Send and save the justificante (CSV or registration number). Watch the sede and your Carpeta Ciudadana; if they ask you to subsanar, you have 10 days to upload the missing items.

Tricks that save time

• Upload certificaciones literales (not extracts) of birth; you avoid requests for more documents.
• For mínimos, include everything: even small incomes. Hiding anything often ends in a repayment claim.
• If you ask for the 20% IPT +55, add your vida laboral and a signed statement that you don’t work; it usually prevents the usual “acredite situación” request.
• The sede can behave oddly on mobile. Chrome on a desktop usually works better and prevents signing errors.

Common mistakes that will mess up the process

1. Asking for retroactivity when it doesn’t apply: they’ll deny it and you waste time.
2. Uploading blurry photos or partial documents: guaranteed requerimiento and weeks lost.
3. Not reporting changes in income/cohabitation: they suspend the complemento and later demand repayment.
4. Mixing up regimes: if your pension is from Clases Pasivas/MUFACE, this does not go through the INSS.
5. Not checking compatibility rules for the brecha de género complemento: only one parent receives it.