If you have a SSN already and are an employee in the us, your employer will deduct the income tax.
If you are self employed, you will need to make income tax instalments to CRA (probably monthly). Unsure about cpp, and ei.
You will need to file 2 income tax returns. Your Canadian return will give you credit for the us tax that you will have paid.
If you maintain ties to Canada such as Canadian bank accounts, msp, driver’s licence, then you are deemed a tax paying Canadian and will need to file Canadian tax returns annually, even though physically you are in the us and pay us federal and state income taxes. You will get credit for the us taxes on your Canadian return so that you pay tax only once.
If you maintain ties to Canada such as Canadian bank accounts, msp, driver’s licence, then you are deemed a tax paying Canadian and will need to file Canadian tax returns annually, even though physically you are in the us and pay us federal and state income taxes. You will get credit for the us taxes on your Canadian return so that you pay tax only once.