🇨🇦 OAS: Calculator

Estimate your Canadian Old Age Security benefit for 2026.

yrs
$
ESTIMATED MONTHLY OAS (NET)
$0
After any clawback
Gross Monthly OAS
$0
Annual Clawback
$0

How Old Age Security (OAS) Is Calculated

Old Age Security (OAS) is a monthly benefit available to most Canadians 65 and older, funded from general tax revenue rather than contributions (unlike CPP). Your payment depends on how many years you've lived in Canada after age 18, the age you start receiving it, and your income level, since higher-income seniors have some or all of it "clawed back."

Base Monthly OAS (age 65-74, full residency) = $742.31
Partial Pension = (Years of Residency ÷ 40) × Full Pension
Deferral Bonus = 0.6% per month delayed past 65, up to 36% at age 70
Recovery Tax (Clawback) = 15% of net income above $95,323/year

The Automatic Age-75 Increase

Once you turn 75, your OAS payment automatically increases by 10% (to $816.54/month for full pensioners in 2026), regardless of when you started receiving OAS — this is separate from and not affected by any deferral decision you made at 65.

Partial vs. Full Pension

You need 40 years of Canadian residency after age 18 for the full OAS pension. With fewer years, you receive a proportional partial pension — for example, 25 years of residency gives you 25/40 (62.5%) of the full amount. At least 10 years of residency is required to qualify at all if living in Canada.

📎 Related Tools: CPP Calculator RRSP Calculator Retirement Calculator TFSA Calculator

❓ Frequently Asked Questions

How much is the maximum OAS payment in 2026?
The maximum monthly OAS payment for ages 65 to 74 is $742.31 in 2026, requiring 40 years of Canadian residency after age 18. At age 75 and older, the maximum automatically increases by 10% to $816.54/month.
What is OAS clawback and who pays it?
The OAS Recovery Tax (commonly called the 'clawback') reduces your OAS payment by 15% of your net income above $95,323/year (2026 threshold). High-income seniors can have their entire OAS benefit clawed back if income is high enough.
Can I get OAS with less than 40 years of residency?
Yes. You receive a partial pension proportional to your years of residency (for example, 20 years gives you half the full amount), as long as you have at least 10 years of residency in Canada if you're living there when you apply.
Does delaying OAS past 65 increase my payment?
Yes. Deferring OAS past 65 increases your payment by 0.6% for every month you wait, up to a maximum 36% increase if you start at age 70. There's no benefit to deferring past 70.
Is the age-75 OAS increase the same as the deferral bonus?
No. The 10% increase at age 75 happens automatically for everyone receiving OAS once they turn 75, regardless of what age they started. The deferral bonus is a separate, optional increase for choosing to start OAS later than 65.

🏆 About This Tool — Accuracy & Trust

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📐 Accuracy Note: This tool uses standard, widely published formulas and guidelines. Results are estimates for informational purposes; for financial, medical, or engineering decisions, consult a licensed professional.

📅 Last Updated: September 2026.