Is there a way to unfile a T4 Summary and Employer slip if you accidentally filed before submitting the last payment

Hello mali_d,

It's great to see you in Community.  Welcome!  When creating T4 slips, we understand that things can happen.  QuickBooks Online enables you to get back to business with peace of mind.  I would be glad to help!

Once you've created and filed T4 slips, they're archived.  Here's how to re-create them;

1. Open Payroll, then Payroll tax

2. Select the Filings tab, then Archive

3. From the ▼ dropdown menu on T4 Employee slips, select Delete. 

This will remove the forms from the archive and let you to re-create the T4s.  You're all set and able to Prepare and submit T4 slips and summary.

Should you require additional assistance, please don't hesitate to reach out to our QuickBooks Online Payroll specialists.  They will be able to work with you in real time, and ensure you're able to accomplish your payroll goals without delay!

If you have any other questions, feel free to reach out.  We are always happy to assist!