Trades accountant in Ottawa

Real property is taxed where the property is

For most services the sales tax follows the customer's address. For work on real property it does not — it follows the location of the property itself. That single rule is why an Ottawa trades company cannot decide its tax rate from its own registration. A deck built in Orleans and a deck built across the river are two different supplies for sales tax purposes even if the same crew, the same truck and the same customer relationship produced both. A company that charges its home-province rate on everything is not being efficient; it is producing invoices that are wrong in one direction and unrecoverable in the other. The place of supply rules set out how the determination is made.

One tax on one side, two on the other

Ontario uses a single harmonised tax. Quebec runs a separate provincial sales tax alongside the federal one, administered provincially, with its own registration. The practical consequence for an Ottawa contractor is not just a different percentage on an invoice — it is potentially a second registration, a second filing calendar, and a second set of returns whose deadlines have nothing to do with the first. That is entirely manageable when it is set up deliberately in advance. It is a genuine problem when it is discovered after a year of cross-river work has already been invoiced on the wrong basis, because the tax that should have been charged is still owed whether or not the customer ever paid it.

Coverage does not cross the bridge with the crew

Ontario extends compulsory workplace insurance coverage into construction at the ownership level: independent operators, sole proprietors, partners and executive officers of corporations carrying on business in construction generally have to register, subject to limited exceptions including businesses doing only home renovation work for a homeowner who hires and pays them directly. Quebec administers its own system with its own registration requirements. A crew that works regularly on both sides is therefore potentially inside two regimes rather than one, and assuming that coverage travels with the company rather than with the worksite is the assumption that creates the gap.

Where the income is earned, and who taxes it

If a corporation has a permanent establishment in more than one province, its taxable income has to be allocated among them, which changes which government collects and can change the total. A single job across the river usually will not create one. A yard, a leased storage compound, a long-term site office or a pattern of continuous work might. The point is not that every cross-river job is a problem — it is that the question has an answer and it is better established deliberately than discovered on assessment. Federal government and institutional work concentrated in the National Capital Region tends to produce exactly the long-duration, single-site engagements where this matters most.

Subtrade slips and the holdback layer

The federal T5018 requirement applies to construction businesses regardless of province, and Ontario's construction legislation adds statutory holdback and prompt payment obligations on Ontario projects. Both need the same underlying discipline: payables coded so that subtrade labour is separable from materials, and holdbacks tracked on a schedule rather than remembered. A company invoicing across a boundary has more moving parts than most, which makes the case for structured bookkeeping stronger, not weaker. See the T5018 reporting guide.

What is covered

One Chartered Professional Accountant handles the whole file:

• Place-of-supply review on cross-boundary contracts
• Sales tax registration, filing and reconciliation
• Income allocation where a permanent establishment exists in more than one province
• T5018 information returns and subtrade classification
• Holdback schedules and progress billing cut-off
• T2 corporate return and year-end financial statements

Remote, and there is no Ottawa office

EverStone operates from one office, in Abbotsford, British Columbia, and has no Ottawa location. Engagements run entirely online — video meetings, e-signature and secure document exchange — which for a company already tracking work across a provincial boundary is a smaller adjustment than most. See accounting for Ontario businesses.