Short-Term Rental Rules by Ontario City: Where Airbnb Is Allowed in 2026

There is no Ontario Airbnb rule. Every city writes its own — and the single line that decides whether you can run a short-term rental as an investment is whether the city requires it to be the home you actually live in.

In Toronto, Ottawa, Hamilton, and Mississauga, a short-term rental has to be your principal residence, so a pure investment property generally can't be a legal STR at all. But it flips by city — some allow investment STRs, some carve out exceptions — and a separate day-count rule, 28 or 30 nights, quietly decides whether the STR bylaws even apply to your stay. Get any of it wrong and the penalties are steep: Toronto's fines reach $100,000, and the CRA can deny every deduction on a non-compliant listing.

This tracker sorts the cities, explains the principal-residence dividing line and the day-count hinge, and flags the traps — the condo that can ban you regardless of the city, and the tax that's only temporary. It's a companion to the separate world of long-term rental licensing covered in our municipal landlord licensing tracker. A tracker and a method, not legal advice — figures are dated July 2026, and because municipal rules move (Toronto's tax reverts to 6% after July 31, 2026), always confirm against your city's own page.

There's No Ontario Airbnb Rule — the Principal-Residence Dividing Line

Ontario leaves short-term rentals to municipalities. The province's powers to regulate them flow down through the City of Toronto Act and the Municipal Act, which means there is no province-wide Airbnb rule — just a patchwork set city by city. It's a completely separate regime from the long-term rental licensing some cities require, and the two get confused constantly.

The line that matters most to an investor is the principal-residence rule. Toronto, Ottawa, Hamilton, and Mississauga all allow a short-term rental only in the home where you actually live — where you sleep, receive mail, and file taxes. The rule exists to keep housing stock in the long-term market and stop investors from converting homes into full-time hotels. The practical effect is blunt: in these cities, a pure investment property you don't live in generally cannot be a legal short-term rental at all.

So the honest answer to "can I Airbnb in Ontario?" is that it depends entirely on the city and on whether you live in the unit. That's why a single tracker is worth more than any one city's rulebook — it tells you which question you're actually answering. It also sits downstream of the market question in our best Ontario cities to buy a rental pillar: where you buy shapes not just your yield but whether a short-term strategy is even on the table.

The Rule Flips by City — and the 28-Day Hinge

The principal-residence rule feels universal until you cross a municipal boundary. Kingston has no principal-residence requirement, so an investment-property short-term rental can be legal there. Ottawa carves out a rural-cottage exception — a non-principal-residence STR is allowed in its designated rural zones, a nod to the cottage economy. Niagara Falls, built on tourism, allows short-term rentals in its Tourist, General, and Commercial zones. Same asset, opposite answer, depending on which city you're standing in.

Then there's the hinge that quietly governs everything: the day count. A short-term rental is defined by how long a stay lasts — under 28 consecutive days in Toronto, under 30 in Ottawa and London. At or over that line, you are no longer a short-term rental at all; you're a mid-term rental, outside the STR bylaws entirely. That single fact is the legal path many investors use: rent for 28 or 30-plus days, and the STR registration, the night caps, and the MAT on those stays simply don't apply.

Toronto works as the detailed example. You register with the city before taking a single booking (the 2026 fee is about $375, with renewal around $390), display your registration number on every listing, and stay inside the caps: a whole-home rental is limited to 180 nights a year, while renting up to three rooms within your own residence carries no night cap at all. The Municipal Accommodation Tax is collected and reported on the city's schedule. For the insurance most cities now require, our landlord insurance guide explains why a standard homeowner policy won't cover STR guests, and the mid-term path connects to how fixed-term leases behave once a stay becomes a tenancy.

The Traps: Condos, Taxes, and Enforcement

Even when the city says yes, three traps can still catch you.

The condo override. Under Ontario's Condominium Act, a condo corporation can restrict or prohibit short-term rentals — and that ban applies regardless of what the city permits. A city registration does not override your condo's declaration; the stricter rule wins, and it's usually the condo's. Many Toronto condos explicitly prohibit STRs in their declarations to avoid the turnover, security, and insurance headaches. Read the declaration, bylaws, and rules, and confirm in writing that STRs are allowed, before you register.

The tax layer. Short-term rental income for stays under 30 days is generally business income, not rental income. You owe 13% HST (platforms often remit it if you're not HST-registered) plus the Municipal Accommodation Tax — Toronto's is temporarily 8.5% through July 31, 2026 for the World Cup and then reverts to 6%, Ottawa's is 4%, and Niagara Falls charges a flat nightly fee of roughly $2 to $7 instead of a percentage. And the sharpest tooth: the CRA denies all income-tax deductions on a non-compliant short-term rental — one operating where it isn't permitted or without required registration. Compliance protects your deductions, not just your record.

Enforcement. Toronto now uses platform data and an API that blocks unregistered listings, and Airbnb automatically removes those without a valid number. Fines reach $100,000, or $10,000 a day for continuing offences, plus orders to repay the revenue a non-compliant listing earned. Layered on top, the Ontario Fire Code has required carbon monoxide alarms in short-term rentals since January 1, 2026. None of this is a reason to panic — it's a reason to clear all three traps before you take a booking. The licensing side of compliance is covered in the licensing tracker, and city-level market context lives in our Hamilton neighbourhoods guide.

Where This Is Heading — and How to Stay Ahead

The direction is clear: enforcement is tightening through platform APIs, data-sharing, and higher fines; principal-residence rules are spreading to more cities; and one-off events like the World Cup drive temporary tax changes. Expect more municipalities to regulate, and expect more of the detection to be automated.

The way to stay ahead is to confirm three things in writing before you buy or list: the city's STR rule (and whether principal residence is required), the day-count threshold, and — for a condo — the declaration. Then decide honestly which lane your property is in. For an investment property in a principal-residence city, the compliant move is usually the mid-term path: furnished rentals of 28 or 30-plus days capture higher-than-long-term rent without triggering STR bylaws you can't legally meet.

Key Takeaways: Where You Can Actually Host

Seven moves that turn a patchwork into a decision:

1. Start from the fact that there's no province-wide rule — check your city.
2. Confirm the principal-residence rule — can a non-owner-occupied property even be an STR where you are?
3. Know your city's day-count threshold (28 in Toronto, 30 in Ottawa and London) — at or over it, you're a mid-term rental, outside the bylaw.
4. If it's a condo, read the declaration — a condo ban overrides the city.
5. Register, display your number, and carry the required insurance ($1–2M in several cities).
6. Handle the taxes — HST plus the MAT, filed on the city's schedule — and never run a non-compliant listing (the CRA denies all deductions).
7. For an investment property in a principal-residence city, use the mid-term (28+/30+ day) path instead.

Quick win: confirm your city's principal-residence rule and threshold before you list a single night. Long game: the compliant operator keeps their deductions and avoids five-figure fines.

The Bottom Line

There's no Ontario Airbnb rule — it's municipal, and the principal-residence requirement is the dividing line that decides whether an investor can operate at all. Toronto, Ottawa, Hamilton, and Mississauga require the STR to be your home; Kingston has no such rule, Ottawa carves out rural cottages, and Niagara Falls allows tourist-zone STRs. The day-count is the hinge — under 28 days in Toronto (30 elsewhere) is a short-term rental; at or over it, you're a mid-term rental outside the bylaws. Layer on a condo that can ban you regardless of the city, a MAT that's only temporarily at 8.5% in Toronto, and a CRA that denies every deduction on a non-compliant listing, and the one rule that always applies is: verify your city's bylaw and your condo's declaration before you list. A tracker and a method, not legal advice; all figures are dated July 2026 and should be confirmed against your municipality's own page.

Frequently Asked Questions

Can I run an Airbnb on an investment property in Ontario?

It depends entirely on the city. In Toronto, Ottawa, Hamilton, and Mississauga, short-term rentals must be your principal residence — the home where you actually live — so a pure investment property generally can't be a legal short-term rental there. But the rule isn't universal: Kingston has no principal-residence requirement, so investment-property STRs can be legal; Ottawa allows non-principal-residence cottage rentals in designated rural zones; and Niagara Falls permits STRs in tourist and commercial zones. So the honest answer is "check your specific city." And even where a city allows it, if the property is a condo, the condo corporation can prohibit short-term rentals under Ontario's Condominium Act regardless of the city's rules. If your property is in a principal-residence city and you don't live in it, the compliant alternative is usually a mid-term rental of 28 or more days, which falls outside the short-term rental bylaws. This is general information, not legal advice.

What is the principal-residence rule for short-term rentals?

It's the requirement, used by most large Ontario cities, that a short-term rental can only operate in the home where the host ordinarily lives — where you sleep, receive mail, and file taxes. Toronto, Ottawa, Hamilton, and Mississauga all use some version of it. The purpose is to stop investors from converting housing into full-time hotels and pulling units out of the long-term rental market. In practice it means you can rent your own home (or rooms in it) short-term, but you can't buy a separate property purely to run as an Airbnb in these cities. Documentation — government ID, utility bills, a property tax statement — is typically required to prove the property is your principal residence. Note that renting individual rooms in your home is often treated more generously than renting the whole unit: Toronto, for instance, caps whole-home rentals at 180 nights a year but places no night cap on renting up to three rooms within your residence.

How much tax do I pay on a short-term rental in Ontario?

Several layers. You collect and remit the 13% HST (platforms like Airbnb often collect this automatically if you're not HST-registered), plus a Municipal Accommodation Tax that varies by city — Toronto's is temporarily 8.5% through July 31, 2026 for the FIFA World Cup and then reverts to 6%, Ottawa's is 4%, and Niagara Falls charges a flat nightly fee of roughly $2 to $7 instead of a percentage. Even when a platform remits the MAT for you, you're typically still required to file a periodic MAT report with the city. On the income-tax side, short-term rental income (stays under 30 days) is generally treated as business income rather than rental income, which affects how it's taxed. The critical warning: the CRA denies all income-tax deductions — mortgage interest, utilities, maintenance — for a non-compliant short-term rental, meaning one that operates where STRs aren't allowed or without required registration. Compliance isn't just about fines; it protects your deductions.

Can my condo board stop me from running an Airbnb even if the city allows it?

Yes. Under Ontario's Condominium Act, a condo corporation can pass rules or bylaws that restrict or prohibit short-term rentals, and that ban applies regardless of what your municipality permits. In other words, a city registration doesn't override your condo's declaration — the stricter rule wins, and it's usually the condo's. Many Toronto condos explicitly prohibit short-term rentals in their declarations precisely to avoid the turnover, security, and insurance issues that come with them. Before you buy a condo intending to run it as an STR, or before you register an existing one, read the declaration, bylaws, and rules, and confirm in writing that short-term rentals are permitted. Discovering the ban after you've registered with the city and taken bookings is an expensive way to learn this.

What's the difference between a short-term and a mid-term rental in Ontario?

It comes down to a day count, and that count is the hinge that decides which rules apply. A short-term rental is defined by each city — under 28 consecutive days in Toronto, under 30 in Ottawa and London. A stay at or over that threshold is a mid-term rental, which falls outside the short-term rental bylaws entirely: no STR registration, no night caps, and no MAT on those stays. This is why investment-property owners in principal-residence cities often use the mid-term path — furnished rentals of 28 or 30-plus days let them earn more than a standard long-term lease without triggering the STR rules they can't legally meet. One caution: once a stay is long enough to create a tenancy, provincial tenancy law (the Residential Tenancies Act) can apply, with its own lease, deposit, and notice rules — so the mid-term path has its own compliance layer.

Related Resources

• The Ontario Municipal Landlord Licensing Tracker — the separate long-term licensing regime, city by city.
• Best Ontario Cities to Buy a Rental Property in 2026 — where a short-term strategy is even on the table.
• Best Ottawa Neighbourhoods to Buy a Rental Property — a city with a rural-cottage STR exception.
• Landlord Insurance in Ontario — why STRs need specialized coverage.
• Fixed-Term Leases in Ontario — what happens when a mid-term stay becomes a tenancy.
• CRA Audits of Rental Income — why compliance protects your deductions.
• Ontario LTB Forms Hub — the provincial forms that apply once a stay becomes a tenancy.

This article is general information for Ontario landlords and investors, current as of July 14, 2026. It is not legal, tax, or accounting advice, and it does not confirm whether any specific property may be operated as a short-term rental. Short-term rental rules are set city by city and change frequently; all figures are dated July 2026 and sourced from municipal pages and reporting, and the Toronto Municipal Accommodation Tax is scheduled to revert from 8.5% to 6% after July 31, 2026. Verify your municipality's current bylaw — the principal-residence rule, day-count threshold, registration, fees, insurance, and MAT — and your condo's declaration directly before you list, and consult qualified professionals as needed. Sources: City of Toronto, City of Ottawa, and municipal reporting, 2026.