Request an extra top-up to your pension (INSS)

What you need to have ready

1. Cl@ve (PIN or Permanent), DNIe or certificado digital. Without one of these use the submission without certificate with SMS verification.
2. Supporting documents ready in PDF/JPG: children, empadronamiento, income, etc.
3. Your pension number or the latest revalorización (to identify your prestación in TuSS).
4. Time and patience: if one paper is missing, they'll ask you to subsanar.

Documentation

1. DNI/NIE scan. If you sign with certificado, still upload it if requested.
2. Libro de familia or certificaciones de nacimiento (for complemento por brecha de género).
3. Certificado de empadronamiento recent (residence in Spain if you ask for complemento a mínimos).
4. Income: last Renta, or certificates of pensions and other income (rent, work, foreign pension). If you don't file Renta, prepare bank certificates or other proofs.
5. Bank document with IBAN (if you update account or it's missing in your expediente).
6. Court judgement/convenio regulador (if it affects children/cohabitation) and other resolutions that support your case.

Step by step

1. Access Tu Seguridad Social: https://tu.seg-social.gob.es and ID yourself with Cl@ve, DNIe or certificado.
2. In Pensiones, open your prestación and click “Solicitar complemento” or “Comunicar variaciones/solicitar complemento”. If it doesn't show, look under Tus gestiones.
3. Choose the type of complemento: a mínimos (if your pension is below the minimum and you meet income limits) or brecha de género (if you qualify by children and other specific rules).
4. Fill in the form with your data and attach the documents: children, empadronamiento, income, etc. The site shows file size limits; use clear PDF/JPG files.
5. Sign and register with Cl@ve. Download the receipt in PDF (date, registry number) and keep it.
6. Follow your expediente in TuSS. If you get a requerimiento for subsanación, enter and upload what's missing inside the same expediente (don't open a new one unless told).
7. No Cl@ve: go to https://tramites.seg-social.es, choose Pensiones > Envío de solicitudes y documentación al INSS, fill your details, attach files and verify by SMS.

Time-savers and tips

1. Upload everything at once: children, padrón, income. The more complete, the fewer back-and-forths.
2. One PDF per block (for example, “Ingresos_2025.pdf”) to avoid file-count limits.
3. If the Cl@ve SMS is flaky, use the Cl@ve app or your certificado.
4. Chrome/Firefox usually work better than Safari on TuSS. Clear cache if a page won't load.
5. Keep the receipt and set a reminder: if there's no news in 3–4 semanas, check the expediente.

Common mistakes that will mess up the process

1. Not declaring income (especially foreign pensions). INSS cross-checks data: denial or repayment is likely.
2. Expired or wrong empadronamiento: they'll reject complemento a mínimos.
3. Waiting for wide retroactivity: retroactivity is limited; apply as soon as you qualify.
4. Opening multiple applications for the same thing: it scatters documents and delays the process. Use the same expediente for subsanación.
5. Not reporting changes within 30 days (marriage/divorce, income, residence): they can remove the complemento and demand repayment.