Security company cross-border tax: a deliberately short page

The US head-office invoice is still an HST invoice

National accounts are where cross-border shows up in this industry: a US logistics or retail group with Ontario warehouses, and instructions to bill their Chicago head office. Guarding a building is a service in respect of real property, and when that property sits in Canada, the export zero-rating rules step aside — GST/HST applies at the rate of the province where the site is, no matter which country the invoice travels to. Zero-rating those invoices because the payer is American builds a quiet assessment, with interest, for every month the contract runs.

Set this up in the master service agreement — rate schedules that state the tax by site province — and the US accounts-payable team stops disputing lines they were always going to owe.

Guards do not cross the border, and we will not pretend otherwise

There is no casual way to post your guards at a US site. Security work is licensed state by state, your Ontario PSISA licences stop at the border, security guard is not a TN (USMCA) profession, and your people would need US work authorization besides. When a client asks you to cover a Michigan location, the realistic options are a US-licensed subcontractor or a straightforward no — and if you subcontract, the payment and tax clauses deserve a review before signature, not after.

The one genuinely cross-border file: the US-citizen owner

Peel has plenty of security company owners who are US citizens or green-card holders, and their file is real. A US 1040 is due every year regardless of where they live, FBAR reporting covers Canadian accounts — including corporate accounts they can sign on — and owning a Canadian corporation pulls Form 5471 and the GILTI rules into scope. These are penalty-backed filings, and they interact with how the company pays its owner: salary versus dividends reads differently in each system. If this is you, the Canadian corporate plan and the US personal file have to be prepared as one engagement, not two.

Where the money actually is: payroll

We kept this page short because the substance in this niche is domestic. A hundred hourly guards across dozens of sites is a payroll problem with a tax return attached: night and weekend premiums, statutory holiday pay on irregular schedules, overtime that spans split sites, WSIB, and turnover that generates ROEs weekly. Peel's logistics corridor concentrates the contracts — and the competition — within a few kilometres of our office, so we have seen what breaks. That engine, not the border, is where accounting earns its fee in a guard company, and it is exactly what our security company payroll service runs.