Liability decides this one before tax does
For most trades, the incorporation question starts with the small-business rate. For a company that puts workers seventy feet up and swings wood over houses, hydro drops and parked cars, it starts with what happens when something goes wrong. Insurance is the first and best answer, and nothing about a corporation changes that. What the corporation adds is containment: a contract dispute, an uninsured gap or a claim that outruns policy limits lands on the company, not on your home, your savings and the family vehicle.
The honest limits matter just as much. If you are the one on the saw or in the bucket, your own negligence stays your own; no structure shields the person who made the cut. The corporation protects the owner as owner, not the arborist as arborist, and we say so plainly before anyone pays for a minute book.
What the corporation shields, and what it does not
| Exposure | What actually protects you |
|---|---|
| A claim after property damage on a job | Liability insurance responds first; the corporation keeps the lawsuit against the company rather than your personal assets |
| Your own hand on the saw | Nothing shields personal negligence; the climber-owner answers for their own work, incorporated or not |
| Equipment loans on the trucks and chipper | Lenders usually take personal guarantees from owner-managers, and a guarantee survives incorporation |
| Unremitted HST and payroll source deductions | Directors stay personally liable; incorporation does not launder tax debts |
| A crew injury | WSIB is the compensation system; the corporation opens its own account and pays premiums at tree-service rates |
Read the middle rows twice. A corporation is a liability tool with specific edges, and pretending otherwise is how owners get sold structures they did not need.
The tax case, briefly and honestly
Profit kept in the corporation is taxed at roughly 12.2% combined in Ontario on the first $500,000 of active income, against personal marginal rates for a sole proprietor. In this trade the retained money has an obvious job: the next chipper, the bucket truck's replacement, the down payment a lender wants to see. If the household consumes every dollar the business earns, the deferral mostly disappears and the corporation is an expense.
There is a second, quieter benefit for a storm-driven trade: the corporation absorbs the loud years, and you pay yourself on a schedule the household can plan around instead of a T1 that whipsaws with the weather. One quirk cuts the other way. Storms ignore the calendar, summer squalls and winter ice alike, so the choice of year-end matters less here than in strictly seasonal trades, and we pick it for filing logistics rather than weather.
Moving a working company into the structure
The corporation is a new legal person, and tree work involves more re-papering than most trades. It needs its own business number, HST registration and WSIB account, with clearance certificates issuing in the corporate name, since a certificate in your personal name satisfies nobody's procurement office. Insurance gets re-issued, municipal vendor registrations and standing offers get updated, and customer contracts get re-signed. One thing does not move: an ISA Certified Arborist credential belongs to the person who earned it, so the company holds the contracts while the certification stays yours.
Trucks and equipment transfer in under a section 85 rollover without triggering tax, with lender consent obtained first for anything financed. Timing is flexible in a trade without a clean off-season; what matters is switching between jobs rather than mid-contract, so municipal terms and insurance renewal dates usually set the date. We run the whole sequence inside every Incorporation engagement.
When staying simple is the right call
A solo climber subcontracting to established companies, or a one-truck operation earning modest profit that all gets drawn out, gains a T2, a minute book and higher accounting costs from incorporating, and not much else. Staying a sole proprietor with clean records and CPA Quick Support at $99 a month is often the better year. The triggers that change our answer are concrete: the first employee, the first municipal standing offer, the first financed bucket truck. We run the numbers in a free 15-minute discovery call, and we are happy to say not yet.
