Alex crosses the river to work in Ottawa and comes home to Gatineau. His payroll uses Ontario information. His tax software asks about Quebec. Both can be asking the right question.
The distinction is between the province used for payroll deductions and the province of residence for the annual return. Crossing a bridge each morning does not change where he lives.
Start with residence, then inspect the slips
For an ordinary employee resident in Canada throughout the year, provincial income tax generally follows residence on December 31. A Quebec resident reports income earned outside Quebec too. Ontario employment income does not disappear from the Quebec return because the employer issued an Ontario T4. Revenu Québec: income earned outside Quebec.
Alex collects the T4 and any other slips actually issued, then checks employer, year, employment income and deductions. He does not invent an RL-1 or enter the salary a second time merely to make the provincial return look complete. Follow the software's Quebec-resident instructions for a T4 from outside the province.
This example assumes his home and ordinary residential ties remain in Quebec. A move, an absence from Canada or business establishments in multiple provinces needs a different review.
Payroll has its own province rules
The employer determines the province of employment under payroll rules, including where the employee reports for work. Full-time remote arrangements have additional guidance. A home address is therefore not always the province payroll should use. CRA: determining the province of employment.
If Alex's arrangement changes, he asks payroll to review the facts. He does not ask for a province change simply because one paycheque would be larger. Correct payroll withholding can still differ from the final annual calculation.
Check the transfer of tax already withheld
CRA's 2025-return instructions allow an eligible Quebec resident to transfer up to 45% of income tax shown on qualifying slips from payers outside Quebec. The amount goes on federal line 43800 and the same amount on Quebec line 454. Pension-income splitting can affect the calculation. CRA's tax-transfer instructions.
For a simple example, assume $10,000 of qualifying income tax withheld and no pension-splitting adjustment. The maximum under the 45% limit is $4,500. It is not 45% of Alex's salary, and it is not a new $4,500 tax saving. It allocates tax already paid between the two returns.
Review both results together. A transfer can reduce a Quebec balance while also changing the federal result. If Quebec taxable income is zero, CRA says no transfer is necessary. Do not automatically select a maximum without checking the completed returns.
Plan for the balance while there are paydays left
Alex makes a projection using the year's total expected income, deductions, credits and withholding. A transfer cannot fix a shortfall in the combined amount paid. He keeps the two payment destinations separate, even if one return shows a refund.
If additional withholding is needed, he discusses the appropriate payroll adjustment and checks a later pay statement. He keeps the projection with the slips so next year's review has a starting point.
The bus route stays the same. The useful change is knowing which number answers which question.
Checked October 20, 2026, using the 2025 tax-transfer instructions and current payroll guidance. Next: two Quebec filing confirmations and separate balances.
