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CRA Tax Instalment Calculator (Canada)

↻ Updated 2026 tax year

Find out whether the CRA requires you to pay tax by quarterly instalments in 2026 — and, using the no-calculation (prior-year) option, what each of your four payments is and when they're due.

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Your inputs
$
tax after withholdings/credits
$
from your prior return
Quarterly instalment
$2,000
$8,000 for the year
Instalments required?
Yes
threshold $3,000
Total for the year
$8,000
prior-year option
Instalment schedule
March 15$2,000
June 15$2,000
September 15$2,000
December 15$2,000
How this is calculated
This year's net tax owing$9,000
Instalment threshold$3,000
Last year's tax ÷ 4$2,000
Amount per instalment$2,000
ASSUMPTIONS — 2026 tax year. The CRA requires quarterly instalments when your net tax owing is more than $3,000 ($1,800in Quebec) in both the current year and one of the two prior years. This uses the “prior-year” (no-calculation) option — each instalment is last year's tax divided by four, due March 15, June 15, September 15 and December 15. The CRA also offers no-calculation and current-year options; it will normally send you an instalment reminder. Consult a tax professional for your situation.

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RealMoneyIQ provides free educational calculators, not financial, tax, investment or legal advice. Results are estimates based on the assumptions you enter and publicly published rates; your actual outcome will differ. Always confirm decisions with a licensed professional who knows your full situation.