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066 | Amending a T4 Slip

This is our last post for you in our Hot Topic of the Month series on T4 Season. We hope you have found this information and these tips helpful this month.


What to do if you make a mistake

Unfortunately, accidents happen. If you do make a mistake, how you correct it will depend on the type of error made, whether you have already filed, and how you filed. Check the CRA guidelines to:

If you made a mistake completing Box 18, EI premiums, (over or under-deducted for the year,) you can verify what EI deductions should have been made using CRA’s official calculation method.


When is the filing deadline?

All T4s must be filed next week on February 28th.


If you are mailing your T4 slips, the envelope must be postmarked no later than the deadline.


Consequences for missing the deadline can include:

  • Employees can report you to the CRA

  • You may be fined

  • The CRA may take you to court

And as always, we are here to help. Send your questions and we'll be happy to lend a hand.


#bigrose #bookkeeping #t4 #smb

Amending a T4 Slip

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