Payroll Withholding When You Employ a Non-Resident Worker in Ontario

An employee doesn't need to be a Canadian citizen, permanent resident, or even a Canadian tax resident for an Ontario employer's payroll withholding obligations to apply. Non-resident employee payroll withholding trips up employers who assume immigration status and tax status are the same thing — they aren't, and mixing them up leads to under-withholding and CRA exposure for the business.

This article covers the general framework Ontario employers should understand before putting a non-resident worker on payroll.

Tax Residency Is Not the Same as Immigration Status

A worker can hold a valid work permit, a study permit with work rights, or even no formal Canadian immigration status at all (working remotely from abroad for a Canadian employer) and still have a distinct tax residency status from their immigration status. Canadian tax residency depends on factors like where the person's residential ties are located, not on what stamp is in their passport.

An employer's payroll obligations generally hinge on where the employee performs their duties and, secondarily, on the employee's tax residency — not on their citizenship or immigration category. Don't assume a work permit holder is automatically a tax resident, or that someone without status is automatically a non-resident for tax purposes.

The General Withholding Rule

As a starting point, Canadian employers are generally required to withhold and remit income tax, CPP, and EI from an employee's pay, whether or not that employee is a Canadian tax resident, if the employee's duties are performed in Canada. The fact that a worker is a non-resident does not, by itself, exempt an Ontario employer from ordinary payroll withholding on Canadian-source employment income.

Where things get more complicated is when a tax treaty between Canada and the employee's home country might reduce or eliminate the ultimate tax owed — but a treaty benefit generally needs to be established through a specific process, not simply assumed by the employer at the payroll stage.

When a Waiver May Apply

In some circumstances, a non-resident employee (or their employer, on the employee's behalf) can apply to the CRA in advance for a waiver that reduces or eliminates payroll withholding, typically where the employee's income will ultimately be exempt from Canadian tax under a treaty or will otherwise not attract a Canadian tax liability. This is a formal application process with its own timelines and requirements, and it needs to be in place before you rely on it — an employer cannot simply decide unilaterally not to withhold based on an assumption that a treaty will apply.

CPP and EI Considerations

CPP and EI operate on their own separate rules from income tax withholding, and a worker's tax residency status doesn't automatically determine whether CPP and EI apply to their employment. Some non-resident workers are exempt from one or both programs depending on factors like where they normally reside, whether a reciprocal social security agreement applies, and the nature of their work arrangement. Because these rules shift depending on the worker's specific country and circumstances, confirm the current treatment with the CRA, Service Canada, or a payroll specialist rather than assuming a blanket exemption or a blanket requirement.

Common Employer Mistakes

• Assuming that because a worker lives outside Canada, no Canadian withholding applies — the location where duties are performed matters more than where the worker lives
• Treating a work permit as proof of tax residency, or the absence of one as proof of non-residency
• Not withholding while waiting to see whether a treaty exemption "probably" applies, without an approved waiver actually in place
• Overlooking that CPP/EI treatment can differ from income tax treatment for the same worker
• Failing to document the analysis at the time payroll is set up, leaving the business unable to explain its position if the CRA later asks

Frequently asked questions