After you file your T3 slips, you may discover that you need to cancel a slip.

Cancelling slips over the Internet

To cancel a slip, do not change any information that was on the original slip. Use summary report type code "A" and slip report type code "C."

For more information about cancelling T3 slips over the Internet, go to Filing Information Returns Electronically.

Cancelling slips on paper

If you choose to send your cancellations on paper, include the original slip, enter "C" in box 16, and clearly mark "CANCELLED" at the top of the slip. Send two copies of the cancelled slip to the recipient. Send one copy of the cancelled slips to us with a letter explaining the reason for the cancellation.

Forms and publications

• Guide T4013, T3 Trust Guide

Related links

• Internet file transfer (XML)