International tax and non-resident enquiries

For questions about GST/HST, please see Non-resident GST/HST enquiries. For questions about Corporation Internet Filing, please see Corporation Internet Filing Help Desk Hours of Service. For all other questions, see the telephone numbers below.

Calls from anywhere in Canada and the United States

Individuals and non-resident trusts 1-800-959-8281
Non-resident corporations and corporation accounts
(including sole proprietors, partnerships, self-employed individuals, payroll accounts and GST/HST enquiries)
1-800-959-5525
Part XIII tax and non-resident withholding accounts 1-855-284-5946

Calls from outside Canada and the United States

(We accept collect calls by automated response. Please note that you may hear a beep and experience a normal connection delay.)

Individuals and non-resident trusts 613-940-8495
Non-resident corporations and corporation accounts
(including sole proprietors, partnerships, self-employed individuals, payroll accounts and GST/HST enquiries)
613-940-8497
Part XIII tax and non-resident withholding accounts 613-940-8499

Fax numbers

Individuals 1-613-941-2505
Non-resident corporations, corporation accounts, and trusts 1-613-952-3845
Part XIII tax and non-resident withholding accounts 1-613-941-6905

Hours of telephone service

Individuals and non-resident trusts – within Canada and the U.S.A.
9:00 a.m. to 5:00 p.m. (local time) from Monday to Friday (except holidays).

Individuals and non-resident trusts – outside Canada and the U.S.A.
9:00 a.m. to 5:00 p.m. (Eastern time) from Monday to Friday (except holidays).

Non-resident corporations and corporation accounts – within Canada and the U.S.A.
9:00 a.m. to 6:00 p.m. (local time) from Monday to Friday (except holidays)

Non-resident corporations and corporation accounts – outside Canada and the U.S.A.
9:00 a.m. to 6:00 p.m. (Eastern time) from Monday to Friday (except holidays)

Part XIII Tax and non-resident withholding accounts – within Canada and the U.S.A.
7:30 a.m. to 6:00 p.m. (Eastern time) from Monday to Friday (except holidays)

Part XIII Tax and non-resident withholding accounts – outside Canada and the U.S.A.
7:30 a.m. to 6:00 p.m. (Eastern time) from Monday to Friday (except holidays)

International and Ottawa Tax Services Office addresses and fax numbers