What happens next?

How to file a us tax return from canada 
Total your foreign earned income. 
Foreign earned income includes any amounts you earned from a canadian employer or through self-employment while living in canada. It doesn't include any passive income, such as dividends or interest on investments.

Pick from:
 (a). If you're unsure how much you earned on january 1 , 2016, you need to complete your canadian tax return to claim the whole amount. Pay taxes from the current year if you live in canada..
 (b). Most foreign earned income is tax-deductible. Canadian earned income includes any leftover money you can use to pay off your interest on investments..
 (c). Foreign earned income includes non-taxable income, such as non-american credits or for-profit charitable donations. Profits from foreign earned income are inactive income, which means they no longer contribute to your taxable income..
 (d). Rental income, such as if you're renting out a property you own, typically is considered passive income. If you are self-employed, some of your income may be considered passive income, such as returns on capital investments..
(d).