How does OAS deferral work in Canada?

Old Age Security (OAS) can start as early as age 65 or be deferred up to age 70. For each month you delay past 65, your OAS increases by 0.6% — a total maximum increase of 36% if you defer from 65 to 70. For example, if your OAS at 65 would be $727/month (2026 Q1 rate), deferring to 70 raises it to $988/month permanently. The increase is locked in for life and indexed to CPI each quarter. Unlike CPP, OAS is funded by general tax revenue — there is no "contribution" you are waiting to recoup.

What is the OAS clawback threshold in 2026?

The OAS clawback (officially called the OAS Recovery Tax) applies when your net income exceeds $90,997 in 2026. For every dollar of income above that threshold, 15 cents of OAS is clawed back. OAS is fully eliminated when net income reaches approximately $148,000 for those who started OAS at 65. The threshold and elimination points are indexed to inflation annually. If you expect your income to exceed $90,997 in retirement (from CPP, RRIF withdrawals, rental income, etc.), minimizing your OAS start amount to avoid clawback is worth evaluating.

What is the break-even age for OAS deferral?

The break-even for deferring OAS from 65 to 70 is approximately age 83. By waiting 5 years (60 months) without OAS, you forgo $727 × 60 = $43,620 in payments. The higher deferred payment of $988/month vs $727/month produces an extra $261/month. At $261/month extra, it takes about 167 months (nearly 14 years from age 70) to recoup the foregone amounts — reaching age 83–84. If you live past 84, deferral paid off. Canadian women age 65 have a median life expectancy exceeding 87; men exceed 84.

Should I defer OAS if I expect to be subject to the clawback?

Not usually. If your income at 65 is already above the $90,997 clawback threshold, you are losing 15% of OAS anyway. In this case, deferring OAS loses you years of reduced-but-positive payments and does not meaningfully help unless your income will drop below the threshold in later years. Example: at $110,000 net income, OAS at 65 is clawed back by ($110,000 − $90,997) × 15% = $2,850/year — you still keep $727 × 12 − $2,850 = $5,874/year. That's money you forgo if you defer without good reason to expect lower income later.

Can I cancel OAS after I start if I change my mind?

Yes. You can cancel OAS within 6 months of starting. You must repay all OAS received during those 6 months. After the 6-month cancellation window closes, OAS cannot be cancelled or recalculated. If you started OAS at 65, received it for 3 years, and then cancelled — you would need to repay 36 months of payments before restarting later. This cancellation/restart option is rarely used but exists for those whose financial situation changes significantly.

Does working after 65 affect OAS eligibility?

Working after 65 does not disqualify you from OAS or reduce the base amount. However, employment income adds to your net income, which can trigger the OAS clawback. Many Canadians who work into their late 60s defer OAS to avoid having it clawed back by employment income, then start OAS at 70 (or when they stop working) at the higher 36% premium rate and lower income.

OAS Deferral Guide Canada 2026 | Should You Delay OAS?

Short Answer

Deferring OAS past 65 increases your monthly amount by 0.6% per month, up to a maximum 36% increase at age 70. The break-even for deferring from 65 to 70 is approximately age 83–84. Deferral makes most sense for healthy retirees with other income sources, those subject to OAS clawback at 65 but not later, and those who want a higher guaranteed, inflation-indexed income floor in advanced age.

2026 OAS Rates and Deferral Amounts

2026 Q1 maximum OAS = $727.67/month for ages 65–74; ages 75+ receive the 10% automatic increase = $800.44/month.

Defer to age	Monthly increase	Monthly OAS (65-74 base rate)	Annual OAS
65	0%	$727.67	$8,732
66	+7.2%	$780.05	$9,361
67	+14.4%	$832.45	$9,989
68	+21.6%	$884.84	$10,618
69	+28.8%	$937.24	$11,247
70	+36%	$989.63	$11,875

At age 75, the 10% automatic OAS enhancement applies regardless of when you started. Those who deferred to 70 at $989.63 receive $1,088.59/month from age 75.

OAS Deferral Break-Even Calculation

Item	Amount
OAS at 65	$727.67/month
OAS deferred to 70	$989.63/month
Monthly increase from deferral	$261.96/month
Months of OAS foregone (65–70)	60 months
Total foregone from deferral	$727.67 × 60 = $43,660
Months to recoup foregone amount	$43,660 ÷ $261.96 ≈ 167 months ≈ 13.9 years
Break-even age	70 + 14 years = ~age 84

Canadian life expectancy at age 65: women ~87.5 years; men ~84.3 years. For the average Canadian woman, deferral breaks even and then generates additional income. For men, the math is closer to break-even at the median.

OAS Clawback (Recovery Tax) — 2026

Net income	Annual OAS reduction	Monthly OAS retained
Under $90,997	No clawback	Full $727.67/month
$100,000	($100,000 − $90,997) × 15% = $1,350/year	$727.67 − $112.50/month = $615/month
$115,000	($115,000 − $90,997) × 15% = $3,600/year	$727.67 − $300/month = $428/month
$130,000	($130,000 − $90,997) × 15% = $5,850/year	$727.67 − $487.50/month = $240/month
~$148,451	Full clawback	$0/month (fully eliminated for age-65 start)

The clawback threshold ($90,997 in 2026) is indexed annually to inflation.

Income Sources That Count Toward OAS Clawback

Income type	Counts toward clawback?
CPP/QPP income	✅ Yes
RRIF mandatory withdrawals	✅ Yes
Employment income	✅ Yes
Rental income (net)	✅ Yes
Non-registered investment income	✅ Yes
Capital gains (taxable portion)	✅ Yes
TFSA withdrawals	❌ No
Return of capital	❌ No
Non-taxable insurance benefits	❌ No

TFSA withdrawals do not count toward OAS clawback — this makes the TFSA the ideal vehicle for income-flexible retirees managing the clawback threshold.

When to Defer OAS

Situation	Defer OAS?	Reasoning
Still working at 65, income > $91K	✅ Defer	OAS will be clawed back anyway; defer for higher permanent amount
In good health, long-lived family	✅ Defer	Break-even at ~84; likely to exceed it
Low income at 65, no GIS concern	❌ Take at 65	No clawback; take guaranteed income now
Low-income retiree eligible for GIS	❌ Take at 65	GIS supplements OAS at low income — deferring delays GIS benefits too
Large RRSP/RRIF balance	✅ Consider deferring	Draw RRSP/RRIF now while deferring OAS; reduces OAS clawback exposure later when RRIF minimums kick in
Poor health	❌ Take at 65	Break-even assumes living past 84 — not appropriate under poor health

OAS at Age 75+: Automatic 10% Increase

All OAS recipients receive a 10% permanent increase at age 75, regardless of when they started. This was introduced in 2022.

Scenario	Monthly OAS at 70 (from deferral)	Monthly OAS at 75+
Started at 65 (no deferral)	$727.67	$800.44
Deferred to 70 (+36%)	$989.63	$1,088.59
Deferred to 67 (+14.4%)	$832.45	$915.70

The 10% age-75 increase applies to whatever amount you were already receiving — so deferred starters benefit from both the deferral increase and the age-75 enhancement.

Strategies to Manage the OAS Clawback

Strategy	Mechanism
Max TFSA withdrawals instead of RRSP	TFSA income is invisible to OAS clawback
Income splitting with spouse (pension splitting)	Reduces your net income by shifting RRIF income to spouse
Charitable donations	Reduce net income via donation tax credit
Capital losses to offset gains	Reduces net income in clawback calculation year
Defer OAS until RRIF minimums force income higher	Use voluntary RRSP/RRIF withdrawals at 65–70 to smooth income vs a spike at 71

Bottom Line

OAS deferral makes financial sense for healthy retirees who have other income to fund the years between 65 and 70. The 36% permanent increase from deferring to age 70, combined with the automatic 10% boost at 75, can produce nearly 50% more monthly OAS than taking it at 65. Factor in your expected income, clawback exposure, and health before deciding — checking My Service Canada Account for your projected OAS amount is the starting point.