Payroll services in Ottawa

The question is the establishment, not the address

Every Ottawa employer eventually hires someone who lives in Gatineau, and almost every one of them asks the wrong question first. Residence does not determine source deductions. What matters is the establishment the employee reports for work at. An employee who lives across the river and reports each day to an Ottawa office is, for payroll purposes, an Ontario employee: Ontario tax tables, CPP, EI, a T4. The employee sorts out the interprovincial position on their own personal return, where Quebec residents reconcile what was withheld against what Quebec assesses.

The position changes when the employer has a Quebec establishment. Revenu Québec requires source deductions and employer contributions where an employee reports for work at one of your establishments located in Quebec, or where an employee is not required to report anywhere and is paid from a Quebec establishment. An Ottawa business that opens a Gatineau location, or that hires remote staff attached to one, has crossed into a second payroll regime rather than an extension of the first.

What a Quebec establishment actually pulls in

Quebec does not simply apply a different tax table. It runs parallel institutions. The Quebec Pension Plan replaces the Canada Pension Plan for Quebec employment. The Quebec Parental Insurance Plan sits alongside federal Employment Insurance, with premiums on both the employee and employer sides. Provincial income tax is withheld and remitted to Revenu Québec rather than to the CRA, on Revenu Québec's own schedule. And year-end reporting is doubled: an RL-1 slip is issued in addition to the federal T4.

Where an employee reports to establishments both inside and outside Quebec, the treatment becomes proportional rather than binary, and premiums paid under plans outside Quebec are taken into account so that the combined employer cost is not duplicated. That is the point at which an Ottawa payroll stops being something to run off the side of a desk. The determination is worth making, and documenting, before the hire rather than after the first slip.

Ontario employer health tax still applies to the Ontario side

For the Ontario portion of the payroll, the province's employer health tax works as it does anywhere else in Ontario, and its main trap is the order of operations: the rate is selected from the band table using total Ontario remuneration before the exemption, and only then is the $1,000,000 exemption deducted and the rate applied. Rates run from 0.98% up to 1.95% on payroll over $400,000, and no exemption is available where the employer or its associated group exceeds $5,000,000 of annual Ontario payroll. Ontario workplace coverage runs through the WSIB, separately again. The tables and their sources are on the Ontario tax facts page.

What the engagement covers

• Province of employment determined and documented for each employee
• Ontario deductions, remittances and T4s for Ontario-employed staff
• Quebec source deductions, QPP, QPIP and RL-1 slips where a Quebec establishment is involved
• Remittances to the CRA and, where applicable, to Revenu Québec on their separate schedules
• Ontario employer health tax calculated with the band selected correctly
• WSIB payroll reporting
• Records of employment under the correct provincial standards

Remote, and nowhere near the Ottawa Valley

EverStone is a single-practitioner CPA firm operating from one office in Abbotsford, British Columbia. There is no Ottawa office and none is planned; Ottawa employers work with the firm entirely online through video calls, secure document exchange and e-signature. For a payroll that already spans two provincial regimes, having the file held by one accountant end to end matters considerably more than proximity does — the determination made at hiring is the one reflected in February. The remittance calculator covers the federal side if you want to check a figure yourself.