Paying a Foreign Contractor From Ontario: What Tax Obligations Apply

Hiring talent from outside Canada has never been easier, and many Ontario businesses now pay contractors and freelancers who live abroad without a second thought about tax consequences. That's a mistake. Paying a foreign contractor from Canada can trigger withholding and reporting obligations for your business, and getting them wrong exposes you — not just the contractor — to CRA reassessment.

This article walks through the key questions an Ontario business should work through before sending payment to a non-resident contractor.

Step One: Where Is the Work Actually Performed?

The first question isn't where the contractor lives — it's where the services are performed. A non-resident contractor who does all their work outside Canada (writing code from their home country, for example) is generally treated differently than one who travels to Ontario to perform services in person.

Payments to non-residents for services rendered in Canada are the situation most likely to trigger a withholding obligation on the Canadian payer, separate from whatever the contractor may owe on their own return in their home country.

The Withholding Obligation

When a Canadian business pays a non-resident for services performed in Canada, federal tax rules generally require the payer to withhold a percentage of the gross payment and remit it to the CRA — before the contractor ever sees the full amount. This withholding is not the final word on how much tax the contractor actually owes; it's an amount held back on account of their eventual Canadian tax liability, similar in spirit to payroll withholding on an employee's pay.

The specific withholding percentage and the mechanics around it change from time to time, so confirm the current rate with the CRA or an accountant before processing a payment rather than relying on what you may have read elsewhere — this is exactly the kind of detail worth double-checking each time, not something to assume stays fixed.

Can the Withholding Be Reduced or Waived?

In some circumstances, a non-resident contractor can apply in advance for a waiver or a reduction of the withholding, typically where a tax treaty between Canada and the contractor's home country means little or no Canadian tax will ultimately be owed. This is the contractor's application to make, generally submitted well before the work is performed or the payment is made — it is not something the Canadian payer can simply decide to skip based on their own judgment about the treaty.

Without an approved waiver in place, the payer's withholding obligation generally applies regardless of what the contract says or what either party assumes about the contractor's tax situation.

Reporting: What the CRA Expects From You as the Payer

Even where services are performed entirely outside Canada and no withholding applies, Canadian businesses paying non-residents for services may still have a reporting obligation — typically through an information slip filed with the CRA (commonly a T4A-NR) summarizing what was paid to the non-resident contractor during the year. Talk to your accountant about whether your specific payments trigger this filing.

Don't Forget GST/HST

GST/HST questions run on a separate track from income tax withholding. Whether HST applies to services a non-resident contractor provides to your Ontario business — and whether you can recover any HST paid through input tax credits — depends on the nature of the services and where they're considered to be supplied. This is a distinct analysis from the withholding question above and shouldn't be assumed to follow automatically from it.

A Practical Checklist Before You Pay

1. Confirm where the work is actually performed — inside Canada, outside Canada, or a mix
2. Ask whether the contractor has applied for or holds a treaty-based waiver covering the payment
3. Determine whether withholding applies, and if so, remit it to the CRA rather than paying the contractor the full gross amount
4. Track total payments to the contractor for the year so you can meet any year-end reporting obligation
5. Check the GST/HST treatment separately — it doesn't automatically mirror the income tax withholding analysis
6. Put the tax responsibilities in writing in your contractor agreement so both sides understand who is responsible for what

Frequently asked questions