Description

Interest is charged if payment is not received by the due date. Remember: if the due date falls on a weekend or holiday, your payment is due the next working day. The Ministry of Finance also applies interest to amounts the ministry owes to individuals and corporations. Tax interest is compounded daily and interest rates are reset every 3 months. **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](https://www.ontario.ca/document/provincial-land-tax). **Note:** Interest rates do not apply to the Estate Administration Tax Act, 1998. Current interest rates (July 1, 2026 to September 30, 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.

Resources

Name	Format	Description	Link
Original metadata (https://data.ontario.ca)	HTML		https://data.ontario.ca/dataset/12d06aa0-ac2a-4c3f-a57f-46b4c9079eb7
Tax interest rates	CSV		https://data.ontario.ca/dataset/12d06aa0-ac2a-4c3f-a57f-46b4c9079eb7/resource/aabfc556-9856-49b1-9c93-59bf6abf5f3b/download/mof_interest_rates_jul_sept_2026.csv
Original metadata (https://data.ontario.ca/fr)	HTML		https://data.ontario.ca/fr/dataset/12d06aa0-ac2a-4c3f-a57f-46b4c9079eb7

Tags

Topics

Categories