T1-ONCanada Revenue Agency
T1 General 2025 — Income Tax and Benefit Return (Ontario)
The Ontario T1 General is the personal income tax return filed by Ontario residents to report their income, claim federal and Ontario deductions and credits, and calculate taxes owed or refunds due. Each province and territory publishes its own T1 package — this page covers the Ontario variant (5006 series), Canada's largest province by population.
Unofficial backup — may not be the latest version
This is an archived copy of a document originally published by the Government of Canada. It is provided here as a convenience mirror. The official source may have been updated since we last archived it. Always verify with the official source before filing.
View official source on canada.ca- Form code
- T1-ON
- Department
- CRA
- Archived on
- May 5, 2026
- File size
- 1.3 MB
T1-ON.en.pdf
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