Quick Tax Refund Estimator — Canada
Answer 3 short steps for a fast refund estimate. No T4 required — we auto-estimate your withholding. Covers 2024, 2025 (blended 14.5% federal), and 2026 (14%) for all 13 provinces.
About you
Your income
Deductions & credits
About you
We need a few basics to apply the right credits. No account, no CRA login.
How the estimate works
Step 1 (About you) sets your province, tax year, and a few credit eligibility flags (age 65+, spouse, dependents). Province drives the provincial tax and the provincial portion of credits.
Step 2 (Your income) takes three totals: employment (T4 box 14), self-employment, and other income (interest/rental/ordinary dividends). Employment income drives the auto-estimated withholding.
Step 3 (Deductions & credits) captures the most common items on a T1 return: RRSP (deduction), charitable donations (14% + top-rate federal credit), medical over 3% of income, and tuition paid.
The estimate compares your auto-estimated T4 withholding against the final tax after credits. Actual refunds differ for: second employers, non-standard tax codes, carry-forward tuition, CCB/CWB (refundable), and Quebec provincial return done via Revenu Québec.
What actually produces a refund
A refund is not a reward and it is not extra money. It is the gap between what came off your pay through the year and what you actually owed once the return is finished: refund = tax withheld − tax payable. Your employer withholds using the TD1 you filed and the assumption that you will earn the same amount all year, and it knows nothing about your RRSP, your donations, your tuition or your spouse. Every one of those items lowers the second number without touching the first, and the difference is refunded.
That framing decides which lever is worth pulling. Only two things can produce a refund, and they behave differently:
- A deduction comes off income before tax is calculated, so it is worth your marginal rate — the rate on your last dollar. RRSP contributions, union dues, child care and moving expenses are deductions. The same contribution is worth roughly twice as much to a high earner as to someone in the bottom bracket, which is why deferring an RRSP deduction to a higher-income year can be rational.
- A non-refundable credit comes off the tax itself at a fixed rate — generally the lowest federal rate, 14.5% for 2025 — regardless of what you earn. The basic personal amount, the age amount, tuition and medical expenses work this way. “Non-refundable” is the operative word: these credits can reduce your tax to zero but cannot push it below zero, so someone who already owed no tax gets nothing further from them.
The credits with thresholds are where estimates most often diverge from reality. Donations are credited at 14.5% on the first $200 and 29% above it (or 33% to the extent income exceeds $253,414), so splitting a couple’s giving across two returns wastes the higher tier — pool them on one return instead. Medical expenses only count above a floor of the lesser of 3% of net income or $2,834 for 2025, so the lower-income spouse should usually make the claim, and a 12-month window ending in the tax year can be chosen to bunch expenses on one side of the floor. And the RRSP deduction is capped at 18% of prior-year earned income to a ceiling of $32,490 for 2025, less any pension adjustment — your notice of assessment states your own limit, and the wizard does not check it.
A worked example
Take an Ontario employee with $70,000 of employment income in 2025, no spouse, no dependants and nothing at all entered in step 3. Federal tax, Ontario tax, CPP and EI on that income come to roughly $17,796 for the year — and because payroll withheld against the same income with the same basic personal amount and nothing else, the estimated withholding is that same figure. The refund is nil. That is the correct answer and the honest starting point: a bare T4 with no deductions and no extra credits is built to come out even. Everything you get back comes from something payroll could not see.
Now add a $5,000 RRSP contribution and nothing else. Taxable income falls by $5,000, the tax owed falls with it, and the withholding is unchanged because payroll never saw the contribution. The refund moves by about $1,483 — roughly 29.65% of the amount contributed, which is this taxpayer’s combined federal and Ontario marginal rate. That is the whole mechanism: the refund is the marginal rate multiplied by the deduction.
The same arithmetic explains the two most common disappointments. Someone in the bottom bracket contributing to an RRSP gets back a fraction of what a top-bracket colleague gets for the identical deposit. And someone whose income tax was already nil — a student, a part-year worker — gets nothing at all from tuition or donation credits, because there was no tax there to reduce. Tuition in that position is not lost; it carries forward, and can be transferred in part to a parent, grandparent or spouse.
Where the estimate stops
The wizard estimates your withholding from employment income rather than reading it off the slip, which is the point — you do not need the T4 yet. The cost is that it cannot see a mid-year raise, a bonus taxed at a flat rate, a second employer, a TD1 with extra tax requested, or a year you did not work in full. All five push real withholding away from the estimate, and all five are on the slip.
It also stops at the tax calculation. Refundable amounts that arrive separately — the Canada Workers Benefit, the GST/HST credit, the Canada Child Benefit — are not part of the figure, and neither are CRA offsets against existing debts. Once you have the slip in hand, the full refund estimator takes box 22 directly and drops the largest source of error.
Which year to run, and when the money arrives
The wizard covers 2024 through 2026. Pick the year the income was earned, not the year you are filing in: a return filed in the spring of 2026 is the 2025 tax year. If you are checking whether to change something you still control — an RRSP contribution, a donation, when to realise a gain — run 2026 instead, because that is the year still open to you. A 2027 estimate is not offered by design: CRA does not publish indexed brackets and credit amounts until the autumn before the year begins, so any 2027 figure today would be a guess dressed as a calculation.
One quirk of 2025 is worth naming. The lowest federal rate was cut from 15% to 14% part-way through 2025, so the 2025 return applies a blended 14.5% to the bottom bracket, and the basic personal amount of $16,129 is credited at that same blended rate — worth about $2,339 of federal tax on its own. From 2026 the full 14% applies to the first $58,523 of taxable income, which means a modest refund improvement at the same income even before indexation.
On timing, CRA’s published targets are to process 95% of returns within four weeks filed electronically and eight weeks on paper, and within 16 weeks for a non-resident return. Its guidance is not to ask about a missing refund until 12 weeks have passed if you live in Canada, or 16 weeks if you do not. Direct deposit is the single biggest improvement available: it removes the mail leg for both the refund and any benefit payments attached to the return.
Interest is not compensation for a slow assessment. CRA pays compound daily interest on an overpayment starting on the latest of 30 days after the balance-due date, 30 days after you filed, or the day the overpayment actually arose — so filing in February does not start the clock in February. Filing early still pays, because benefit entitlements recalculated in July depend on an assessed return; a late return delays the Canada Child Benefit and the GST/HST credit along with the refund.
Finally, the refund can arrive smaller than any estimate through no error in the calculation. CRA may keep part or all of it against an amount you owe or it expects you to owe, a support garnishment, or federal, provincial and territorial debts such as student loans and benefit overpayments — and it does not pay refunds of $2 or less. That is a collections decision applied after assessment, so it is visible on the notice of assessment and nowhere before it.