I am non-resident with self employment income from BC. If I file my return in BC do I still have to pay the 48% federal surtax because I am a non-resident?

[Tom_Cheng]

Yes, unless your income is earned from a business with a permanent establishment in Canada, you pay the provincial or territorial tax instead of the surtax.

(You’re also subject to a 25% withholding tax on certain types of income such as dividends, rental payments, pension, and OAS payments, and RRSP payments in Canada.)

For more information, please click: 

TurboTax The Ultimate Tax Guide For Non-Residents

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