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The basic personal amount is a non-refundable credit that shelters a base level of income from federal tax, so income below it carries no federal tax. The amount is indexed every year, and the enhanced portion is phased out across the second-highest federal bracket, so taxpayers in the top bracket receive only the base amount. Each province and territory sets its own version. On Form TD1 you claim it so your employer withholds less; claim it with one employer only, or too little tax is withheld.

Taxable income is what is left after you total the income the tax rules include and subtract the deductions you are allowed. Employment and self-employment earnings, most pensions, EI and CPP benefits, interest, dividends, rental profit, the taxable portion of capital gains, RRSP and RRIF withdrawals and most taxable benefits from work all go into the total. Tax is then calculated on that figure and reduced by non-refundable credits such as the basic personal amount.

A real CRA agent will ask you to confirm identifying details, including your social insurance number, once you have called them or after they reach you about a known file. What the CRA does not do is demand your SIN, banking details or a payment over a call you were not expecting, threaten arrest, or ask for gift cards or crypto. If a call feels wrong, hang up and phone the CRA back on a number from canada.ca.

The three levers are deductions that reduce the income you are taxed on, credits that reduce the tax itself, and moving savings into registered plans. RRSP room is the lesser of 18% of prior-year earned income and the year's dollar limit — $32,490 for 2025 and $33,810 for 2026 — then reduced by any pension adjustment and increased by unused room carried forward. A TFSA shelters growth instead of deferring tax. Claim every eligible expense, split eligible pension income where the rules allow, and carry unused amounts forward rather than losing them.