How the OAS Calculator works
Estimate annual and monthly OAS income. Adjust the inputs above, then use the calculate button to generate a fresh estimate based on the numbers you entered.
The result is designed to give you a quick planning number, plus a short breakdown of the major figures behind it. You can reset the form at any time and try a different scenario.
When to use this calculator
Use this OAS calculator to estimate monthly and annual Old Age Security income from an assumed age-65 amount. It is useful for testing retirement income if you plan to start OAS at a different age.
Formula
Estimated OAS = age-65 monthly OAS adjusted for start age
- Estimated monthly OAS at 65 is the baseline amount entered.
- Start age adjusts the estimate for delayed benefits.
- Annual OAS is the estimated monthly amount multiplied by 12.
Worked example
For an estimated $700 monthly OAS at age 65, the calculator estimates monthly and annual OAS income based on the start age entered.
Common mistakes
- Assuming everyone receives the same OAS amount.
- Ignoring OAS recovery tax or clawback at higher incomes.
- Forgetting tax on OAS income.
FAQs
Is OAS based on work contributions?
No. OAS eligibility is generally based on age, residency and income rules, not CPP contributions.
Is OAS taxable?
Yes. OAS is generally taxable income and may be reduced for higher-income retirees.
Can OAS be delayed?
Yes, delaying can increase the monthly amount, subject to current program rules.