Canada -> USA commuter 2021

[sjantzi]

I'm Canadian on TN commuting to the USA daily. Since the border closure I've been working remotely from Canada. I understand that I now need to claim back all the taxes I paid via my employers withholds while performing my job from Canada and I'll owe that to CRA.

My question is about going forward in 2021. I believe that CRA will require me to pay quarterly installments due to owing so much in 2020 but my employer is still submitting my taxes to IRS. How should I deal with this? I'm not clear on how I would stop my employer from withholding taxes and there's no way I can afford to lend all that money to the IRS until 2021 tax time.

Any advice would be appreciated.

[nelsona]

You need to file a W-4 with your employer, lowering the withholding as much as you can. As long as you have withheld 90% of your yearly tax owing, there is no problem.