After you file your information return, you may discover that you need to send additional slips. If you have original slips that were not filed with your return, file them separately either electronically or on paper.

Adding slips over the Internet

To file additional slips electronically, see Filing Information Returns Electronically (T4/T5 and other types of returns).

Adding slips on paper

When you fill out additional slips on paper, clearly identify the new slips by writing “ADDITIONAL” at the top of each slip.

File an NR4 Summary for the additional slips showing the revised totals. Clearly write “ADDITIONAL” at the top of the summary.

Send one copy of the additional slips, and NR4 Summary along with a letter explaining the reason for the addition, to the Sudbury Tax Centre.