CRA Arrears Interest Calculator
Estimate the cost of carrying an overdue CRA balance through one or more 2026 quarters.
Estimated CRA interest
$17490 days, compounded daily
Original balance
$10,000Estimated total owing
$10,174Quarter-by-quarter calculation
Official sources
See the full CRA prescribed interest rates reference page for the quarterly history back to 2022 and how the rate is set.
Frequently asked questions
What interest rate does the CRA charge in 2026?
CRA charges 7% annual arrears interest for the first, second, and third quarters of 2026. Prescribed rates are reset quarterly and interest compounds daily.
When does CRA arrears interest start?
Interest generally starts on the day after the balance was due and continues until the amount is paid. It also applies to unpaid penalties and previously charged interest.
Related Calculators
Take-home pay
Net pay after federal, provincial, CPP and EI deductions
Federal + provincial income tax
Combined tax on your income by province
CPP & EI premiums
CPP1, CPP2 and Employment Insurance for 2026
Federal public service pay
AS-01 to AS-07 salary with pension, CPP/QPP and EI
All Canadian tax calculators
Browse every catax.tools calculator