Why Retirees Are Often Shocked by Tax Bills and How to Reduce Them
Financial advisor Jason Heath emphasizes that to truly keep the Canada Revenue Agency's hand out of your pocket, retirees should focus on their lifetime tax burden rather than just annual filings. Published on April 22, 2026, this analysis reveals how retirement tax planning can help individuals pay less tax during their lives and from their estates upon death by using tax brackets wisely.
The Annual Tax Season Reality
It is that time of year when taxpayers cross their fingers and hope for a tax refund. According to CRA data for the 2026 tax-filing season through April 20, about 62 percent of tax returns filed resulted in a refund, with an average refund of approximately $2,248. However, taxpayers with a balance owed an average of $5,775, highlighting significant disparities.
Self-employed taxpayers, landlords, and investors with non-registered investment accounts are more likely to owe tax. But a surprising category for chronic CRA debtors on April 30 is retirees. If you are approaching retirement, the tax angle might be worrisome. So, why do retired Canadians owe so much tax, and what can they do to plan for this?
The Shift from Employment to Retirement
Most Canadian workers are employees. During your working years, you receive a salary with payroll withholding tax. The tax withheld should result in neither tax owing nor a tax refund at year-end if you have no tax deductions or tax credits. However, taxpayers tend to have both deductions and credits to claim.
Contributions to a registered retirement savings plan (RRSP) or costs for child-care expenses are generally deductible and lead to refunds. Tax savings also result from donations as well as medical expenses beyond a minimum threshold. When an employee transitions to retirement, the tax situation changes dramatically.
With no employer to withhold an amount that can reduce taxes owed, and fewer credits and deductions, retirees can face a bigger amount owing than they are used to. Depending on sources of income, retirees can consider different tax strategies. Here are a few common income sources and what to expect.
Pensions and Withholding Tax
Pensions are like salary in that there are payroll tables that payors are required to use to determine withholding tax. As a result, pensioners receive a deposit to their account of the net pension after tax. If a retiree has only defined benefit pension income from a single employer, he or she may be tax-neutral at year-end. Most have other sources of income, however, and this tends to change the tax outcome.
Canada Pension Plan (CPP) and Old Age Security (OAS) pensions, for example, have no required withholding tax. When you fill out your application with Service Canada, you can elect to have tax withheld. Most retirees see this section on the form and think, ‘Why would I want the government to take tax off my pension?’
When you file your tax return, your CPP and OAS is fully taxable income reported on T4A(P) and T4A(OAS) tax slips. If you receive CPP and OAS in addition to a workplace pension, it is likely you will owe tax when you file. However, if you elect to have tax withheld when you apply for CPP and OAS, federal income tax will be deducted from your monthly payments, preventing a big tax bill when you file your return.
Strategic Tax Planning for Retirees
To avoid unexpected tax shocks, retirees should consider the following strategies:
- Elect Withholding on CPP and OAS: Opting for tax deductions on these pensions can spread the tax burden evenly throughout the year.
- Utilize Tax Brackets Wisely: Plan withdrawals from registered accounts to stay within lower tax brackets, reducing overall lifetime taxes.
- Claim Available Credits: Even in retirement, deductions for medical expenses and donations can provide tax relief.
- Consult a Financial Advisor: Professional guidance can help tailor a tax-efficient retirement income plan.
By focusing on lifetime tax minimization rather than just annual filings, retirees can better manage their finances and avoid the shock of large tax bills. Proactive planning is key to ensuring a comfortable and financially secure retirement.
