You have 18 months after the end of your tax year to submit Form T661. Miss that, and the claim is permanently lost.
At-a-Glance
- Corporate Return (T2): Filed six months after year-end.
- Form T661: 18 months after year-end (file with amended T2 if necessary).
- Provincial Credits: Same 18-month limit (Quebec requires separate forms).
- Refund Processing: Typically 90–120 days for first-time claimants.
Tips
- File contemporaneously—waiting 18 months weakens credibility.
- Add reminders to your finance calendar four months, two months, and two weeks before the deadline.
- Large projects? Submit progress claims each fiscal year.
Video coming soon: sred-deadlines