How to Plan Retirement Taxes in Canada: Key Strategies

What to know about withholding tax in retirement

When you’re employed, your employer withholds income tax from each paycheck. If that withholding is set correctly and you don’t have many other incomes or deductions, you’ll typically neither owe a large balance nor receive a large refund at year‑end. Many workers do receive refunds, though, because common deductions and credits—like RRSP contributions or medical expenses—reduce taxable income.

Retirement is different. Several retirement income sources either don’t require withholding or default to low withholding amounts. A small employer pension may have little or no tax withheld. CPP and OAS payments also don’t automatically have tax deducted unless you ask. When you combine multiple sources of income, the default withholding on each individual payment may be insufficient for your total tax bill, and you can end up owing when you file.

Withholding tax on pension income

CPP retirement benefits do not have mandatory withholding. You can, however, request that Service Canada withhold federal tax from your CPP when you apply or any time afterward by signing into your My Service Canada Account or by completing the official Request for Voluntary Federal Income Tax Deductions form.

Old Age Security (OAS) payments likewise do not require withholding by default, but you can ask Service Canada to withhold tax. One important nuance: high earners face an OAS recovery tax (clawback). If your net income for 2024 exceeds the applicable threshold—about $90,997—your OAS payments for July 2025 through June 2026 will be reduced by 15 cents for each dollar above that threshold. The recovery reduces your net OAS and functions similarly to withholding because you report it on your tax return.

A registered pension plan’s withholding is typically calculated as if that pension were your sole income for the year. That approach often underestimates your total tax obligation when you have other income sources. If you’re concerned about a shortfall, you can ask the pension administrator to withhold more tax from your pension payments.

Withholding tax on RRSP and RRIF withdrawals

RRSP withdrawals carry mandatory withholding at set rates applied by financial institutions. Current federal thresholds are:

• 10% on cash withdrawals up to $5,000
• 20% on withdrawals between $5,000 and $15,000
• 30% on withdrawals over $15,000

Quebec applies different rates: the federal portion at 5%, 10% and 15% for the same brackets, plus provincial withholding of about 14%, producing higher combined withholding rates.

When you convert an RRSP to a Registered Retirement Income Fund (RRIF), different rules apply. You must convert by December 31 of the year you turn 71, and RRIFs have government‑mandated minimum withdrawal amounts based on your age and the account value at the prior year‑end. If you withdraw only the minimum required from a RRIF, no withholding is required. Any RRIF withdrawal above the minimum is subject to the same withholding thresholds as RRSP withdrawals.

The impact of your marginal tax rate

It’s crucial to understand that lack of withholding does not mean the income is tax‑free. Canada’s tax system is progressive: income is taxed in brackets, and higher income is taxed at higher marginal rates. Your total tax due depends on the sum of all taxable income and available deductions and credits.

For example, a small pension with no withholding could still trigger significant tax if combined with other income. If you have substantial income elsewhere—investment income or part‑time work—it may push you into a higher marginal bracket, meaning the pension income will be taxed at that higher rate when you file.

Avoiding or reducing tax installment requests

If you end up owing more than $3,000 in tax in two consecutive years (or $1,800 for Quebec residents), the Canada Revenue Agency (or Revenu Québec) may require you to make quarterly tax installments the following year. These prepayments are a common surprise for retirees who don’t have sufficient withholding.

Two frequent retirement tax headaches are installment demands and OAS clawbacks. One way to reduce or avoid installment requirements is to increase voluntary withholding on your retirement incomes—CPP, OAS, workplace pensions, or RRSP/RRIF withdrawals. By arranging higher withholding, you can spread your tax payments through the year rather than face a lump sum at filing. Accurate estimation of your annual tax helps ensure that withholding matches what you’ll actually owe, leaving you with predictable net cashflow.

Your choices and next steps

Many retirees discover that standard withholding is too low for their combined income and thus end up with installment obligations or a balance owing. But you have options. You can request voluntary withholding from Service Canada for CPP and OAS, ask your pension plan administrator to increase withholding, and manage RRSP/RRIF withdrawals in ways that minimize surprises.

Consider estimating your total taxable income for the year—including CPP, OAS, pension income, RRIF minimums and any additional withdrawals—and comparing that to expected tax using current federal and provincial rates. If the resulting estimate shows a balance owing, increasing voluntary withholding or making planned RRIF withdrawals subject to withholding can prevent year‑end shortfalls and avoid installment requirements.

Read more about taxes in retirement:

• What to know about withholding tax in retirement
• How to build the most tax‑efficient retirement income plan
• U.S. withholding tax on RRSPs for Canadians
• Using whole life insurance for tax‑free retirement income