When can I start receiving OAS in Canada?

You can start OAS as early as age 65. You can also defer it up to age 70 in exchange for a permanent increase of 0.6% per month (7.2% per year) for each month past 65. Deferring to 70 increases your OAS by 36% for life. Unlike CPP, you cannot start OAS before 65. You must also apply — OAS is not automatic unless you are enrolled through Service Canada's automatic enrolment program.

What is the OAS clawback and how does it affect my decision?

The OAS Recovery Tax — commonly called the clawback — reduces your OAS by 15 cents for every dollar of net income above a threshold ($90,997 in 2025). OAS is fully eliminated at approximately $148,179. If your retirement income (CPP, RRIF withdrawals, pension, investment income) will regularly exceed the clawback threshold, OAS has reduced value and deferring makes less relative sense than for lower-income retirees. Conversely, if you can manage income below the threshold by deferring OAS, deferral can be strategic.

Should I apply for OAS at 65 or delay?

Delaying OAS makes sense when: you are still working with high income, you have other income sources sufficient for the delay years, and you expect to live past the break-even age (~81–82). Starting at 65 makes sense when: you have modest income in retirement and can use the OAS payments now, you have health concerns affecting life expectancy, or a high RRIF/CPP income already pushes you near the clawback threshold regardless of OAS timing.

Is OAS automatic or do I need to apply?

Service Canada automatically enrolls many Canadians and mails a notification letter at age 64. If you receive this letter, you can accept automatic enrolment or choose to defer. If you do not receive an automatic enrolment notification, you must apply through My Service Canada Account or by submitting Form ISP-3000. Apply 11 months before the date you want payments to begin.

How much is the maximum OAS payment in 2026?

The maximum OAS payment for Canadians age 65–74 is approximately $727.67/month (indexed quarterly to CPI). For Canadians 75 and older, OAS is 10% higher — approximately $800.44/month. The 10% enhancement at 75 was introduced permanently in 2022. Actual amounts depend on how long you have lived in Canada (40 years of Canadian residency is required for a full OAS payment).

Can I receive OAS if I live outside Canada?

Yes, if you have resided in Canada for at least 20 years after age 18. OAS paid to non-residents is subject to a 25% non-resident withholding tax (reduced by tax treaty for residents of many countries). You must apply for OAS even as a non-resident and notify Service Canada of your address and country of residence.

When Should I Apply for OAS in Canada?

Short Answer

OAS can start at 65 or be deferred to 70 for a 36% permanent increase. The right choice turns primarily on your health, other retirement income levels, and whether the OAS clawback threshold applies to you. Unlike CPP, OAS has a relatively simple break-even calculation and no reduction for taking it before 70.

The OAS Deferral Scale

Start age	Monthly deferral bonus vs age 65	Effect on $727/month standard OAS
65	Standard	$727/month
66	+8.4%	$788/month
67	+16.8%	$849/month
68	+25.2%	$910/month
69	+33.6%	$971/month
70	+36%	$988/month

Plus the automatic 10% OAS enhancement at age 75 for all recipients.

Break-Even Analysis: 65 vs 70

Scenario	Total OAS collected	Break-even
Start at 65, live to age 85	$727 × 240 months = $174,480	—
Start at 70, live to age 85	$988 × 180 months = $177,840	Ahead by ~$3,360
Break-even point	OAS at 70 surpasses OAS at 65 at	~age 81–82

If you expect to live past 82, delaying to 70 produces more lifetime OAS income. The average 65-year-old Canadian is expected to live approximately 20 more years, meaning the break-even is exceeded on average.

The OAS Clawback: The Income Threshold Factor

The OAS Recovery Tax (clawback) repays 15 cents of OAS for every dollar of net income above the threshold:

2025 clawback threshold	~$90,997 net income
Clawback rate	15% of income above threshold
OAS fully eliminated at	~$148,179 net income

Example: $120,000 net income = $120,000 − $90,997 = $29,003 above threshold × 15% = $4,351 OAS clawback. If full OAS is $8,731/year, the effective OAS received = $8,731 − $4,351 = $4,380.

Clawback and Deferral Interaction

Strategy	When it helps
Defer OAS to manage income below clawback threshold	When RRIF minimums + CPP + pension already push income near $91K, adding OAS at 65 makes more clawback unavoidable
Draw down RRSP in 65–70 window to reduce future RRIF income	Reduces income in later years, potentially keeping OAS payments intact
Pension income splitting with spouse	Reduces your net income, potentially keeping you below the clawback threshold

OAS Timing vs CPP Timing

Comparison	CPP	OAS
Earliest start	Age 60	Age 65
Latest start	Age 70	Age 70
Reduction for early start	0.6%/month before 65	N/A — no early option
Enhancement for deferral	0.7%/month after 65	0.6%/month after 65
Maximum enhancement	+42% (at 70)	+36% (at 70)

CPP has a higher deferral bonus per month; OAS has no early-start option but is simpler to analyze.

How to Apply for OAS

Step	Detail
Check for automatic enrolment letter	Sent at age 64 if Service Canada has sufficient information
Apply through My Service Canada Account	myaccount.canada.ca — fastest method
Apply by mail	Form ISP-3000, available at Service Canada offices
Timeline to apply	Up to 11 months before desired first payment date
Retroactive payments	If you don’t apply on time, OAS can be paid retroactively for up to 11 months

Guaranteed Income Supplement (GIS): For Low-Income Seniors

If your income is low, the Guaranteed Income Supplement supplements OAS:

2025 GIS maximum (single)	~$1,086/month
GIS eligibility	Net income (excluding OAS) under ~$22,056
GIS interaction with CPP	Additional CPP income reduces GIS dollar-for-dollar above threshold

For GIS recipients, the decision to delay OAS is more complex: deferring OAS while receiving GIS forfeits significant guaranteed income. Most GIS recipients should take OAS at 65.

When to Start OAS: Decision Summary

Your situation	OAS recommendation
Healthy, good family longevity, other income available	Delay to 70
Working with high income at 65	Delay at least while employed — income above clawback threshold reduces OAS value
Health concerns, reduced life expectancy	Take at 65 — break-even unlikely to be reached
Low income, eligible for GIS	Take at 65 — deferral forfeits GIS
RRIF minimums already push income near clawback	Consider whether delay reduces total clawback impact
Moving abroad at retirement	Take OAS at 65 unless income will be very low — non-resident withholding applies regardless of timing

Bottom Line

For healthy Canadians with other income supporting the delay years, deferring OAS to 70 is mathematically advantageous for most who live past 82. The OAS clawback is the key complicating factor — if your retirement income already approaches $91,000/year, carefully model whether receiving OAS at 65 triggers significant clawback versus receiving a larger amount at 70. For GIS recipients, take OAS at 65 without deferral.