07/20/2026
The CRA requires individuals to pay tax in quarterly instalments when net tax owing exceeds $3,000 for the current year and in either of the two preceding years.
"Net tax owing" is your total tax minus amounts withheld at source — so employment income with proper deductions typically doesn't trigger instalments, but self-employment income, rental income, and investment income often do. Late or insufficient instalments trigger compound daily interest, and if instalment interest exceeds $1,000 for the year, a 50% penalty on the excess may also apply.
There are three calculation methods: prior-year, current-year, and the CRA's no-calculation option. The right method depends on how your income compares to prior years — using the wrong one can mean overpaying throughout the year or owing interest.
Your CPA should review instalment obligations annually. Book your free 30-minute consultation with Nguyen Scott LLP.
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