Tax deductions vs. tax credits in Canada: what actually lowers your tax bill

Where the two are applied is the whole story. A deduction, like an RRSP contribution or an eligible business expense, is subtracted from your income before the CRA calculates how much tax you owe on it. A credit is subtracted from the tax bill itself, after that calculation is already done. The distinction looks small on paper, but it can meaningfully change what a given dollar is actually worth to you, depending on your income and which kind of dollar you are dealing with.

Consider a hypothetical retiree we will call Marie, 68, who still takes on a few days of paid consulting work each year. Her consulting income sits in the 20.5% federal tax bracket for 2026. When she deducts $1,000 in eligible business expenses, mileage, a portion of her home office, a software subscription, from that income, her federal tax bill drops by roughly $205, the value of the deduction at her marginal rate. If her consulting income were smaller and she sat entirely in the lowest 14% bracket instead, that same $1,000 deduction would only be worth about $140 in federal tax. A deduction's value rises and falls with your bracket.

Several credits retirees run into work differently. The age amount, the pension income amount, and the disability tax credit are each set at a specific dollar figure by the CRA, then converted into an actual reduction in tax payable at the lowest federal rate, 14% for 2026, no matter what bracket the taxpayer is otherwise in. That is the opposite of a deduction, whose value tracks whatever rate the deducted dollar would have been taxed at.

The age amount is the clearest illustration of how a non-refundable tax credit works in practice. If you are 65 or older at the end of the year, the Canada Revenue Agency allows a federal age amount of up to $9,208 for the 2026 tax year, provided your net income is $46,432 or less, per the CRA's indexation adjustment for personal income tax and benefit amounts. Multiplied by the 14% lowest federal rate, that maximum age amount is worth up to about $1,289 off your federal tax bill, not $9,208 itself, which is the detail most people miss about non-refundable credits.

Above the $46,432 threshold, the age amount itself starts to shrink: the CRA reduces the credit by 15 cents for every dollar of net income above that line, a separate calculation from the 14% conversion rate. Using that 15% reduction rate against the 2026 maximum, the age amount works out to being fully phased out by roughly $107,800 of net income, though the CRA calculates the exact cutoff each year rather than publishing a single fixed figure in advance. If your income is too low to use the full credit, any unused portion can generally be transferred to a spouse or common-law partner.

The table below lays out the basic mechanics side by side, using a simple $1,000 example for each.

Not every credit behaves like the age amount. A non-refundable credit can reduce your tax payable to zero, but it cannot create a refund on its own, and any unused portion is generally lost for the year unless it can be transferred to a spouse, as with the age amount. A refundable credit, such as the GST/HST credit or the Canada Workers Benefit, works differently: it can put money in your pocket even if you owe no tax at all. Knowing which type you are looking at changes what it can realistically do for your household.

The pension income amount is a close cousin of the age amount and is easy to misunderstand in its own right. In our companion piece on making the most of the pension tax credit, Allan answers a reader question about whether converting a locked-in account to a LIF before 65 unlocks that credit early (it does not), and where pension income splitting can matter more than the credit itself. If you are weighing how deductions, credits, and account withdrawals fit together across your own retirement income, that is the kind of scenario we like to model with the retiring professionals and couples we work with.

Provincial age credits: they stack on top of the federal one

In addition to the federal age amount, several provinces also offer their own non-refundable age amount credit for residents who are 65 or older. These provincial credits generally work the same way as the federal one: a set dollar amount is converted into an actual reduction in tax payable, this time at the province's own lowest tax credit rate, and that amount can be reduced by 15% of net income above a threshold the province sets.

The table below shows the 2026 figures for the three provinces where this credit comes up most often for clients, based on TaxTips.ca's 2026 non-refundable personal tax credit tables and EY's 2026 Ontario tax rate tables.

Other provinces, including Manitoba, New Brunswick, Nova Scotia, and Saskatchewan, also offer a provincial age amount, though each sets its own threshold and elimination point. Quebec has an entirely separate tax credit system, so its figures are not directly comparable to the ones above.

Take a hypothetical Ontario retiree with $60,000 of net income. Ontario's maximum age amount for 2026 is $6,342, reduced by 15% of net income above the $47,210 threshold. That is 15% of $12,790, or $1,918.50, leaving an age amount of $4,423.50. Converted at Ontario's lowest tax credit rate of 5.05%, that works out to approximately $223 of provincial tax reduction, on top of whatever the federal age amount is worth to the same retiree.

The provincial credit can add several hundred dollars of tax reduction on top of the federal age amount, so the combined benefit may be meaningful for retirees who qualify for both.

This content is for general information only and is not personalized tax, legal, or financial advice. Age amount figures and thresholds are set annually by the Canada Revenue Agency and by each province, and are subject to change. Your own tax deductions, credits, and their value depend on your total income, province of residence, and personal circumstances. Consult a qualified professional for advice specific to your situation.