The math has to clear two bars
Incorporation pays when two things are true: the business earns more than you need to live on, and the liability profile justifies a separate legal person. On the first, an Ontario corporation pays roughly 12.2% on its first $500,000 of active income while top personal rates sit above 53%, but that spread only works on profit that stays inside the company. If every dollar billed leaves again as living costs, the corporation mostly adds filings.
The second bar is liability, and electrical work clears it more easily than most trades: a defect claim after a fire is the kind of exposure that makes a corporate shield worth having. It is a second line of defence, though, not a first; insurance still does the heavy lifting, and personal guarantees on the operating line reach past the shield anyway.
One honest caution before any of it: an incorporated electrician working year-round for a single contractor, on their schedule and their sites, can be assessed as a personal services business, losing the small business rate and most deductions. We test the client mix before recommending the structure, because the wrong facts can undo the whole case.
Your ECRA/ESA licence does not incorporate with you
Electrical contracting in Ontario requires a Licensed Electrical Contractor licence through ECRA/ESA, and it belongs to the business entity, not to you personally. The licence file names a Designated Master Electrician and carries proof of liability insurance and WSIB coverage. A corporation is a new legal person, so the licence must be issued in the corporate name, the insurance certificate re-papered, and a WSIB account opened for the company before the corporation invoices a single job.
The ECRA/ESA number on the truck and the ads has to match the entity on the invoice. Billing through the corporation while the licence still names the sole proprietorship is the kind of gap nobody notices until a dispute, an insurance claim or an ESA complaint makes it expensive. This is the re-papering list we work through:
| Item | What happens when you incorporate |
|---|---|
| Business number, HST and payroll accounts | New registrations for the corporation; the sole proprietorship's numbers do not transfer |
| ECRA/ESA licence | Issued in the corporate name, with the Designated Master Electrician named on the file |
| Liability insurance | Certificate reissued naming the corporation |
| WSIB | New account, with fresh clearance certificates for your GCs |
| Wholesaler house accounts | New credit applications in the corporate name |
| Ongoing contracts | Assigned to the corporation with the customer's consent |
Sequence the switch between jobs
Timing beats speed. We incorporate at a natural break rather than mid-project: open contracts get finished or formally assigned, the first year-end is chosen to suit the workload, and corporate invoicing starts on a clean date so the sole proprietorship's final year closes neatly instead of tangling two sets of books.
The van, tools and equipment move into the corporation under a section 85 rollover, deferring the tax a plain sale would trigger, and a section 167 election usually keeps HST off the transfer of the business. Done in the right order, the switch costs paperwork, not tax.
The corporation registers for HST from its first invoice; an established contractor is past the $30,000 small-supplier threshold in substance, so there is nothing to wait for, and early registration keeps input tax credits flowing on the setup costs themselves.
If a spouse may hold shares one day, we build the share classes now; amending articles later costs more than drafting them right, and any future dividends to family get a TOSI look before they are paid.
What we handle, and what it costs
Our Incorporation service covers the articles and minute book, a share structure with room to grow, CRA program accounts, and a first-year plan for paying yourself, all built to hand off cleanly into the corporation's first corporate tax filing. Fees are quoted in writing after a free 15-minute discovery call, so there are no hourly surprises.
The first corporate year generates questions weekly, which is what CPA Quick Support at $99/month is for: unlimited questions, a CPA answering, CRA letters reviewed. Plenty of Mississauga and GTA contractors run their first year on it before stepping up to full monthly accounting.
