Tax interest rates

Note

** Provincial land tax interest rates are not reset every three months. Provincial land tax interest rates are summarized on the provincial land tax webpage. **

Note

** Interest rates do not apply to the Estate Administration Tax Act, 1998. Current interest rates (October 1, 2026 to December 31, 2026):

• 7% on taxes you owe to the ministry
• 1% on taxes you overpaid
• 4% on taxes or refunds you are eligible for as a result of a successful appeal or objection
• 5% on late International Fuel Tax Agreement payments
• 5% on International Fuel Tax Agreement refunds the ministry has not paid you within 90 days You can download the dataset to view the historical tax interest rates. __Non-Resident Speculation Tax (NRST)__ _(1)_ Interest on tax you overpaid begins to accrue 40 business days after a complete NRST rebate or refund application is received by the Ministry of Finance to the date the rebate or refund is paid. _(2)_ On refunds you are eligible for as a result of a successful appeal or objection of a NRST refund/rebate disallowance, the interest rate is the same rate as though you had overpaid and will begin to accrue 40 business days after a complete NRST rebate or refund application is received by the Ministry of Finance to the date the rebate or refund is paid. Refunds as a result of a successful appeal or objection of NRST that was paid pursuant to a Notice of Assessment, interest will accrue at the higher appeals/objection rate, beginning to accrue from the date of payment to the date the rebate or refund is paid.