How much does deferring CPP to 70 add?

CPP grows 0.7% per month past 65 — about 8.4% per year, +42% at 70. OAS grows 0.6% per month, +36% at 70. Both increases are permanent and indexed.

What is the OAS clawback trap for dividend investors?

The recovery tax tests grossed-up taxable income. Eligible dividends count at 138% of cash received, so dividend-heavy income can trigger clawback below the apparent threshold.

Should everyone defer to 70?

No. Deferral needs bridge assets, reasonable health, and no urgent cash need. The optimizer shows lifetime totals by start age and longevity so the trade-off is explicit.

CPP / OAS Deferral Optimizer

+42% CPP and +36% OAS at 70 — when waiting wins, when it doesn’t, and the dividend gross-up trap that claws back OAS.

★ CHAPTER BRIEF

Deferring CPP past 65 adds ~8.4% per year — permanently (+42% at 70, inflation-indexed for life). OAS adds 0.6% per month (+36% at 70). No portfolio can promise a guaranteed, indexed 8.4% — but deferral only works if you have bridge assets to live on through your sixties.

The deferral decision is really a drawdown-sequencing decision. Your sixties are the meltdown window: draw down the corporation and RRSP at controlled rates while government benefits grow, and you arrive at 71 with smaller mandatory RRIF withdrawals, larger guaranteed income, and less OAS clawback exposure.

One trap deserves its own line: the OAS recovery tax is tested on grossed-up income. $40,000 of eligible dividends counts as $55,200 against the threshold — dividend-heavy retirees lose OAS on income they never received in cash. This optimizer maps lifetime value for every start age, finds the break-even, and checks your clawback exposure including the gross-up.

★ KEY POINT

Deferral is the cheapest guaranteed annuity in Canada — but only for those with the corporate or registered assets to bridge the gap. Without a bridge, taking benefits when needed is not a mistake; it is the plan.

⚠ COMMON MISTAKE

Judging deferral by the break-even age alone. The bigger benefit is insurance: a larger, indexed, guaranteed income for as long as you live — precisely the years a portfolio is most likely to be exhausted. Longevity in your family history strengthens the case for waiting.

Your numbers

Your age today60

Your CPP estimate at 65 (per year)

From your My Service Canada Account statement.

Planned longevity90

Family history is data — use it.

I have bridge assets (corporate/RRSP) to fund my sixties

Expected annual income in retirement

Drives the OAS clawback check.

…of which eligible dividends

The clawback tests grossed-up income — dividends count at 138%.

CPP at 70 vs 65

×1.42OAS at 70: ×1.36

Deferring CPP from 65 to 70 raises it from $15,000 to $21,300 per year — a permanent, inflation-indexed +42%. To your planned age 90, the highest lifetime CPP total comes from starting at 70 ($426,000); the CPP-at-70 path overtakes the at-65 path around age 82. OAS deferral to 70 adds +36%. ⚠ At $90,000 of expected income, the gross-up on your $40,000 of dividends pushes your income test to $105,200 — above the $93,454 threshold, costing roughly $1,762 of OAS per year. You have bridge assets, so the deferral math can actually be used: your sixties are the meltdown window — draw down the corporation and registered assets first, and let CPP and OAS grow 42% and 36% by 70.

⚠ OAS clawback exposure: your income test is $105,200 after the dividend gross-up — $11,746 over the threshold, costing about $1,762 of OAS per year.

Start age	CPP / year	Lifetime to 90
60	$9,600	$288,000
65	$15,000	$375,000
70	$21,300	$426,000

Figures as of July 2026 · Ontario basis · Educational illustration, not advice — confirm current rates with your CPA.

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Do I have the corporate and registered assets to bridge my sixties if we defer CPP and OAS to 70?

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Educational illustration, not advice. This tool is provided for educational purposes only and does not constitute financial, tax, legal, accounting, or insurance advice. Results are estimates, not promises — hypothetical illustrations are projections only. Figures use Ontario rates as of the date stamped above; rates and limits change. Confirm current figures and your specific situation with a CPA, tax lawyer, and licensed insurance advisor before acting.