According to Canada Revenue Agency (CRA), you can. CRA link to more information: Simplifying the process for claiming a deduction for home office expenses for employees working from...
Please follow the directions in our TurboTax video How to claim your Covid-related employment expenses in TurboTax | TurboTax Canada
You can adjust your 2020 tax return. How you file your adjustment depends on how your original tax return was filed, and whether it was a federal or Québec return. Instructions on filing adjustments for both scenarios are provided below.
If you filed your original return using NETFILE:
- Sign in to your TurboTax Online account for the tax year you want to prepare an adjustment for
- In Return Manager, select ReFILE beside the filed tax return you want to adjust
If you printed and mailed your original return or are in a situation excluded from ReFILE:
- See the CRA’s How to change a return page to make an adjustment online in your CRA My Account or by mail
For more information here is a TurboTax FAQ: I've filed my tax return. Can I still make changes?
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