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what is your effective tax rate if you work from home in montreal for a company in toronto?
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assuming that you don't own the business, it would seem to apply. the cra says: if you were a resident of quebec on december 31, 2016, and you did not have a business with a permanent establishment outside quebec, your refundable quebec abatement is 16.5% of the basic federal tax on line 55 of schedule 1. if you had income from a business (including income you received as a limited or non-active partner) and the business has a permanent establishment outside quebec, or you were not a resident of quebec on december 31, 2016, and the business has a permanent establishment in quebec, use form t2203, provincial and territorial taxes for 2016 - multiple jurisdictions, to calculate your abatement. for people whose income isn't coming from businesses they own, this seems quite clear.
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