[CivicBlues]

Whomever or whatever tax software you use will calculate your taxes based on BC residency. It will come up with a number that is your tax liability

The tax liability will be compared with the taxes that were actually deducted from your paycheques which were based on AB tax rates. Then whatever difference there was will be paid back to you or if you earned over ~ $170,000 (when marginal tax rates become higher in BC) be owed more to the taxman.

Then again IANAA, just someone who does their own taxes using Turbotax.