Ontario Contractor Insurance Requirements (2026 Guide)

Short answer: Ontario’s contractor insurance requirements start from an unusual premise — being a one-person operation is not an exemption. If you own or run a construction business in Ontario, WSIB coverage is compulsory whether or not you employ anybody. The narrow way out is the home renovation exemption, and all three of its conditions must hold: an existing private residence, retained directly by the occupant or a family member, and exempt work only. Register within 10 calendar days of your first hire.

Ontario decided that in construction the owner faces the same site risks as the crew, and wrote that into law as expanded compulsory coverage. The provincial authority is the Workplace Safety and Insurance Board; income tax and HST run separately through the Canada Revenue Agency. Ontario contractor licence requirements covers who needs a provincial licence, and Ontario sales tax for contractors is worth reading before the first bill.

Is WSIB coverage mandatory for a one-person contractor in Ontario?

Yes. WSIB’s position is that “people who own or run a business in construction, with or without employees, must have coverage with the WSIB.” Its own breakdown names independent operators, sole proprietors, some partners in a partnership and some executive officers who work in construction as being inside the compulsory net. The word doing the work in that sentence is some — partners and executive officers have a narrow way out, covered below; independent operators and sole proprietors doing construction work do not.

This is where Ontario diverges from the rest of Canada. In British Columbia and Alberta a self-employed contractor with no workers generally has no registration obligation and buys optional personal coverage only if they want it — see British Columbia contractor insurance requirements if you work in both provinces, because the default flips.

Trigger	Deadline
You own or run a construction business (no employees)	Coverage required — register
You hire your first employee	10 calendar days to register

What is the home renovation exemption, and who actually qualifies?

This is the only meaningful exit from compulsory coverage, and it is drawn tightly. All three conditions must hold at once.

One — the work is on an existing private residence, one that “is, or will be occupied by” the person who directly retained you, or by a member of that person’s family. Note the future tense WSIB includes: a house the client is about to move into still counts. A rental they will never live in does not.

Two — you were retained directly. WSIB’s test is documentary, and it lists three parts: you were hired by the occupant or family member, you “provide estimates/contracts/invoices to the occupant or family member, in the employer’s name,” and you “receive payment for the job directly from the occupant or family member.” WSIB is explicit that the exemption “does not apply to subcontractors retained by the contractor to perform construction work, as these subcontractors are not directly retained by the occupant or family member.” If a GC hired you, you are out — even if the job is a kitchen in a house.

Three — you do exempt work only. This is the condition that quietly breaks the exemption for most people. WSIB states that “if the employer engages in both non-exempt construction work and exempt home renovation work, all deemed workers must be covered,” and that before any non-exempt work commences you must register as a deemed employer and report insurable earnings “from home renovation work and all other work.” Accept one framing job for a GC to fill a slow month and the exemption is gone for everything — and the registration has to be done before that job starts, not after you notice.

A narrower carve-out also exists: one partner or one executive officer can be exempted if they perform no construction work at all, by filing a declaration on a WSIB-approved form. The exemption “takes effect the day the declaration is received by the WSIB” — not the day you signed it, so a backdated form buys you nothing.

What does WSIB coverage cost in Ontario for 2026?

Premiums are charged per $100 of insurable payroll.

WSIB figure	2026	2025
Average premium rate	$1.23 per $100 of insurable payroll	—
Maximum insurable earnings ceiling	$121,700	$117,000

WSIB describes the 2026 average as “the lowest it has been in more than 50 years.” Your own rate depends on classification, so construction trades will not all pay the average — but the $121,700 ceiling caps the earnings any single person’s premium and benefits are calculated against, which matters directly to an owner-operator reporting their own.

Why does your client keep asking for a clearance certificate?

Because if they do not get one, the liability lands on them. WSIB’s rule is that “a principal who directly retains a contractor to perform construction work must obtain a clearance certificate” confirming the contractor is in good standing, before work begins and valid for the duration of the contract. A principal who fails to do that is guilty of an offence under the Workplace Safety and Insurance Act, 1997, and can be liable for the contractor’s WSIB obligations up to the value of the labour portion of the contract. A clearance is valid for up to 90 calendar days depending on when it was issued, and is renewable.

So when a general contractor asks for your clearance number, they are protecting themselves from a statutory liability — arguing about it loses you the job. The obligation is not one-sided either: WSIB treats it as a violation for a contractor to perform construction work without a clearance, or to fail to disclose that a certificate has been revoked. And the rule works in your favour when you are the one hiring: sub work out without a clearance and you can end up paying your subcontractor’s WSIB bill up to the labour portion of what you agreed to pay them.

Is general liability insurance required in Ontario?

There is no province-wide statutory requirement for a general contractor or renovator to carry commercial general liability. Where Ontario does impose a minimum, it is attached to a specific licence.

The clearest example is electrical work. To hold an Electrical Contractor Licence, the Electrical Safety Authority requires you to “have public liability and property damage insurance coverage of at least $2,000,000,” to be a Master Electrician or employ one at all times, to be registered with WSIB if required under the Workplace Safety and Insurance Act, 1997, to hold an Ontario service address, and to be current on filings with the Ministry of Finance and the CRA. Note the stacking: ESA makes WSIB registration a licensing condition, wiring the two together for electricians in a way they are not for a general renovator.

Outside licensed trades, liability cover is driven by clients rather than statute — but it is close to universal on commercial and multi-unit sites.

Do you need new home warranty coverage?

Only if you are actually building a new home. Ontario draws that line at whether a new dwelling exists, not at project size — which is why a $400,000 whole-house renovation can sit outside a regime that a $200,000 new build falls squarely inside.

The Home Construction Regulatory Authority licenses builders and vendors of new homes, and its definition is the test. To be a new home the dwelling must be a new dwelling that “has not been previously occupied,” must be “self-contained (meaning the occupant has their own private access to kitchen, bathroom and living areas),” must be “constructed as a family dwelling to be used for residential purposes,” must be “affixed to a permanent foundation,” and must be able to be “occupied on a year-round basis.” Work on a house someone has already lived in fails the second condition, so renovating or upgrading an existing home does not turn it into a new home and does not pull you into HCRA builder licensing.

If you are building one, the licence is only half of it: the home must also be enrolled in Ontario’s new home warranty plan through Tarion, and enrolment is the builder’s obligation rather than the buyer’s. Tarion’s coverage is tiered by duration, with different items protected for different lengths of time. Take the tiers and what each one covers from Tarion directly before you price a new build — the warranty obligations outlast the job by years.

What about municipal licences like Toronto’s?

Ontario has no province-wide licence for renovation or general contracting, so the real gate is often the city — and Toronto’s is the heaviest. Toronto operates a Building Renovator business licence covering businesses that repair or renovate buildings and structures, and it reaches businesses that advertise renovation services. That last point is the trap: in Toronto, marketing yourself as a renovator can put you inside the licence even before you have taken a job.

Toronto also attaches a trade examination to it, covering business and bylaw knowledge alongside technical knowledge, and charges separate fees for the application, the licence itself, the examination and the annual renewal. Those fees are set by bylaw and are adjusted, so take the current amounts and the current examination format from toronto.ca rather than from any article — including this one — and budget for all four line items rather than just the licence.

Other Ontario municipalities set their own rules and many require nothing comparable, so check the specific city before you assume Toronto’s model applies. If you work across the GTA, you may need more than one municipal licence for the same trade.

What records prove you were covered?

Ontario’s obligations are proved by dated documents: your WSIB account and clearance history, the insurable earnings you reported, and — if you claim the home renovation exemption — estimates, contracts and invoices in your own business name showing the occupant paid you directly.

That last set is the exemption. WSIB’s test is documentary: paperwork in your business name, payment from the occupant or family member. An e-transfer with no invoice behind it proves nothing, so what to include on an invoice matters more here than in provinces where coverage is optional.

Keel keeps that record straight: PDF invoices with your own numbering and logo, receipt capture read on-device using Apple Intelligence, a mileage log, reports, an Accountant Pack, an append-only hash-chained ledger, and a one-file export for the year. It runs entirely on the iPhone — no account, no bank connection, no cloud, App Store privacy label “Data Not Collected.” Free covers unlimited invoices, receipts and mileage; Keel Pro is a one-time $249.99 lifetime purchase.

Keel is a record keeper, not a compliance tool: it does not register you with WSIB, pull clearances or file HST. It keeps the paperwork findable when WSIB, the CRA or your accountant asks.

Frequently asked questions

I am a solo renovator in Ontario with no employees. Do I need WSIB?

Almost certainly yes. Ontario applies expanded compulsory coverage to people who own or run a construction business “with or without employees.” The only common exit is the home renovation exemption, which needs all three conditions — existing private residence, hired directly by the occupant, exclusively exempt work.

Does the exemption cover me if a general contractor hires me for a house?

No. WSIB is explicit that it does not apply to subcontractors retained by a contractor, because they are not directly retained by the occupant or family member. The type of building is irrelevant. If your invoice goes to a GC rather than the homeowner, you fall outside the exemption.

How long is a WSIB clearance certificate valid?

Up to 90 calendar days depending on the issue date, and it is renewable. A principal hiring you must obtain one before you begin and keep it valid through the contract — otherwise they commit an offence under the Workplace Safety and Insurance Act, 1997 and can be liable for your WSIB obligations.

Do I need liability insurance to work as a contractor in Ontario?

There is no province-wide statutory requirement for general contractors and renovators in Ontario. Specific licences impose their own minimums — an ESA Electrical Contractor Licence requires at least $2,000,000 in public liability and property damage coverage. In practice, general contractors and commercial clients will ask for a certificate anyway, whatever your trade.

Do renovations need HCRA licensing and Tarion warranty?

No. HCRA licensing attaches to building or selling a new home, and HCRA’s definition requires a dwelling that “has not been previously occupied,” is self-contained, sits on a permanent foundation and can be occupied year-round. A house someone has already lived in fails that test, so renovating or upgrading it does not make it new and does not require HCRA builder licensing or Tarion enrolment.

Who do I contact if I am unsure which rule applies?

WSIB for coverage, registration and clearances. HCRA for new home builder and vendor licensing, Tarion for warranty enrolment, the ESA for electrical contractor licensing. Your municipality for a business licence — in Toronto, the Building Renovator licence. The CRA for HST and income tax.

---

This article is general information, not legal or tax advice. Rules change — confirm with the authority named above.