How to apply for the Old Age Security pension (ISP-3550) — and autofill your details with my-id.ca
Apply for the Old Age Security pension (ISP-3550) without retyping your details
Old Age Security (OAS) is applied for online through My Service Canada Account, or on paper using Form ISP-3550 — Application for the Old Age Security Pension and the Guaranteed Income Supplement. This guide is an example of storing the repeating identity fields in my-id.ca — it is not financial advice, and my-id.ca is not affiliated with Service Canada or the Government of Canada.
Official form and source
Start from the official Service Canada source and always use the current process — requirements change:
- Apply for OAS: Old Age Security — apply — canada.ca
- About OAS: Old Age Security — canada.ca
What you're applying for
OAS is a monthly pension for seniors who meet the age and residence requirements. Some people are enrolled automatically and only receive a letter; others must apply. The ISP-3550 application also covers the Guaranteed Income Supplement (GIS) for lower-income seniors.
Before you start: what to gather
- Your full legal name, address, SIN, and date of birth.
- Your residence history in Canada (and abroad), which affects eligibility.
- Banking details for direct deposit, and any certified copies of documents the form requests.
How my-id.ca makes it faster
- Store your identity once. Save your name, address, SIN, and date of birth in my-id.ca.
- Autofill the identity fields. Use the my-id.ca Chrome extension on the online application, or fill a PDF of the ISP-3550 from your saved profile inside my-id.ca.
- Enter residence history and banking details yourself — these are specific to you.
- Review every field before submitting.
Why do it in my-id.ca
Your name, address, SIN, and date of birth repeat across the OAS application, the CPP retirement pension application, and your tax forms. Stored once in my-id.ca — in Canada, with self-hosted AI — each form starts mostly filled.
Frequently asked questions
- Do I need to apply for OAS or am I enrolled automatically?
- Service Canada enrols some people automatically and sends a letter; others must apply, online through My Service Canada Account or on the paper ISP-3550. Check your situation on the OAS apply page on canada.ca.
- What is the ISP-3550 form?
- ISP-3550 is the Application for the Old Age Security Pension and the Guaranteed Income Supplement. It asks for your identity, residence history in Canada, and banking details. my-id.ca can autofill your name, address, SIN, and date of birth.
- Does my-id.ca work out my OAS amount?
- No. my-id.ca autofills your repeating identity details. Your eligibility and amount depend on your residence history and income — Service Canada determines those, and you review and submit the form yourself.
Fill it once. Reuse it everywhere.
Save your information in my-id.ca once, then autofill this form and the next one — web forms with the Chrome extension, PDFs right in the app. Your data is stored in Canada and AI runs on my-id.ca's own servers, never sent to third-party AI providers.