Understanding Tax in Retirement

Every extra dollar you withdraw is taxed at its own rate.

Tax in retirement isn’t one number — it’s a staircase. Understanding how each step works is the difference between a good drawdown plan and an expensive one. Let’s build the idea up, then let you play with it.

The one idea to get right

You never pay your top rate on everything.

Canada’s income tax is progressive: your income is sliced into bands, and each band is taxed at its own rate. Moving into a higher bracket only raises the rate on the dollars above that line — never on the dollars below it.

So two rates matter, and they’re different:

  • Marginal rate — what the next dollar is taxed at. This is the one that decides whether an extra withdrawal is worth it.
  • Average rate — total tax ÷ total income. Always lower than your marginal rate, and the honest measure of what retirement actually costs you.
14.5%20.5%26%$58,819$57k$115k
Guaranteed income RRSP withdrawalFederal brackets · avg 12.3%
Model it · the cost of one more withdrawal

Picture a retiree in Ontario. Set their guaranteed income, then drag the RRSP/RRIF withdrawal up and watch what the last dollar costs — and where a hidden step appears.

Province
Receiving OAS?
Total taxable income$58,819
Total tax
$7,228
income tax
Average rate
12.3%
on all income
Marginal rate
32.6%
on your next dollar
You keep
$19,778
of the $25,000 drawn
OAS clawback zone0%10%20%30%40%50%60%70%$0$20k$40k$60k$80k$100kRRSP / RRIF withdrawal this year32.6%
Effective marginal rate on each additional dollar withdrawn — brackets, surtax, and clawback combined.
That $25,000 withdrawal added $5,222 in tax — an effective 20.9% on that slice, even though your average rate is only 12.3%. The last dollar is taxed at 32.6%.

The trap most people miss

The OAS clawback is a bracket in disguise.

Once your net income passes $93,454, the government claws back 15% of every additional dollar of OAS you received — through the recovery tax. It isn’t printed on any bracket table, but it behaves exactly like one: for a stretch of income, your true marginal rate jumps by 15 points. Toggle OAS off above and the tall spike in the curve vanishes — proof that it’s the clawback, not a tax bracket, doing the damage.

The age amount (a credit for those 65+) does the same thing, more gently: it’s clawed back at 15% of income above roughly $45,522, which is the smaller lift you can see in the curve well before the OAS zone. Two “invisible” brackets, both hiding in the same range where many retirees draw their RRSPs.

This is exactly why drawdown order and timing matter so much. The Life in Retirement planner puts it to work: its smart burn down strategy deliberately over-withdraws your RRSP into these cheap brackets each year — reinvesting the surplus in your TFSA — to shrink the forced RRIF income (and estate tax) that would otherwise land at a much higher rate. Compare it against the naive burn down and see the difference in after-tax legacy.

Figures use 2025 federal and provincial rates in today’s dollars for a retiree aged 67, and include the basic personal amount, the age amount (with its income phase-out), the pension income credit on eligible RRIF income, the Ontario surtax, and the OAS recovery tax. A teaching illustration, not tax advice — real returns depend on your full situation.