Short-term rentals remain one of the most reliable ways to turn a spare property into income across Ontario — but the rules governing them have changed considerably since the early Airbnb boom. What worked in 2022 doesn’t necessarily fly in 2026. Cities like Toronto and Ottawa have tightened registration requirements, a new province-wide safety rule took effect this year, and the CRA is now actively denying tax deductions to hosts who aren’t compliant.
If you own a property in Mississauga, Oakville, Hamilton, or anywhere in the increasingly popular Niagara region, here’s what you actually need to know before listing your Airbnb in Ontario today.
Check Your Municipality’s Rules First
Ontario doesn’t regulate short-term rentals provincially — each municipality sets its own bylaws, and they vary significantly from city to city. A listing that’s perfectly legal in one town can be prohibited two municipalities over, so this is the first thing to confirm, not an afterthought.
Toronto, for example, requires hosts to register for a short-term rental licence, limits listings to the host’s principal residence, and caps entire-home rentals at 180 nights per year unless you apply for a shared-room licence instead. Ottawa follows a similar principal-residence model. Waterloo introduced its own licensing class in 2025. Before creating a listing, check directly with your city’s bylaw office — don’t assume your neighbouring municipality’s rules apply to you.
Register and Pay the Right Taxes
In cities that require it, registration isn’t optional paperwork you can skip. Toronto’s platform enforcement has tightened significantly — Airbnb now automatically blocks listings that don’t have a valid registration number tied to the account. Fines for operating without one can run into the tens of thousands of dollars.
You’ll also need to collect and remit the Municipal Accommodation Tax (MAT) where applicable — currently 8.5% in Toronto, 4% in Ottawa — on top of HST. Some municipalities have platforms collect and remit this automatically on your behalf; others require you to file and pay directly. Confirm which applies to you, since MAT reports are often due even in quarters where you had zero bookings.
One change worth knowing: since 2024, the CRA denies rental-related tax deductions — mortgage interest, utilities, maintenance — for any short-term rental operating without proper municipal compliance. Being unregistered doesn’t just risk a fine anymore; it can cost you at tax time too.
Meet the New Provincial Safety Requirement
As of January 1, 2026, the Ontario Fire Code requires carbon monoxide alarms near sleeping areas and on every floor of all homes, including short-term rentals — this applies province-wide regardless of which city you’re in. If your property predates this rule, this is a quick, inexpensive fix worth confirming before your next guest checks in.
Insure Your Property Properly
Renting to guests you’ve never met carries real financial risk, and standard homeowner’s insurance typically won’t cover it. Most municipalities require hosts to carry at least $2 million CAD in liability coverage specific to short-term rental use. Contact your insurance provider directly and confirm your policy actually covers short-term guest stays — don’t assume Airbnb’s host guarantee is a substitute for your own coverage.
Vet Your Guests, Set Clear House Rules
High-demand areas like Niagara and the Toronto region attract a wide range of guests. Airbnb’s two-way review system lets you check a potential guest’s history before accepting a booking, and requiring ID verification adds another layer of trust on both sides. A clear house manual — covering quiet hours, guest limits, and property-specific rules — protects you and sets expectations before anyone arrives.
Do Your Homework on Pricing and Presentation
Research what similar listings in your specific neighbourhood — whether that’s Oakville, Hamilton, or the Niagara area — are charging before you set your price. Guests increasingly expect a local guide included with their stay: nearby restaurants, attractions, and transit info go a long way toward better reviews.
Communication Still Makes or Breaks Your Rating
This hasn’t changed since 2022 and it never will: guests expect a response within 24 hours, and slow or unclear communication remains one of the fastest ways to earn a poor review. Build trust before, during, and after the stay.
Why Professional Cleaning Matters More Than Ever
Guests compare your Airbnb to a hotel stay whether that’s fair or not — an unkempt space tanks your rating fast, and in a market with tighter registration requirements and more competition, you can’t afford avoidable one-star reviews over cleanliness.
A professional cleaning service experienced and vetted for short-term rental turnovers takes that pressure off entirely. Between guest bookings, tight turnaround windows, and the higher standard Airbnb guests expect, having a reliable cleaning partner lets you focus on compliance, guest communication, and growing your rental income — not scrubbing floors between check-ins.