Before anyone signs a lease to run it on Airbnb, I’d want them to answer one number: how many nights a month do you have to book just to get back to zero? Not to make money. To stop losing it. For a pretty ordinary one-bedroom, that number lands around 18 out of 30. That’s the whole story of rental arbitrage in one line, and most of the videos selling it skip right past it.
Disclosure: this post has a couple of affiliate links. If you sign up through one, I may earn a commission and it costs you nothing extra. I only point to things I use or would use. I’m not a financial advisor, not a lawyer, and nothing here is financial or legal advice.
Airbnb has been one of the income streams in our house, so I like the platform and I understand why arbitrage is tempting. You don’t need a down payment. You don’t need a mortgage. You sign a lease, buy furniture, and suddenly you’re “in real estate.” But I think it’s worth being honest about what you actually own when you do this.
What you own is an obligation, not an asset
When I bought rental property, I owned a building that could go up in value, and a tenant was slowly paying down the loan. When you do arbitrage, you own a couch, a bed, some towels, and a promise to pay someone else’s mortgage for twelve months. The upside belongs to you. So does the rent, whether a single guest shows up or not.
That isn’t automatically bad. Plenty of good businesses are built on a lease: restaurants, gyms, laundromats. But it changes the question. You’re not asking “is this a good property?” You’re asking “will this lease produce more cash than it costs, reliably, for as long as I’m locked in?” That’s a business question, and it needs business math.
The break-even occupancy formula
Here’s the simplest version I know. Split your costs into two piles.
Fixed monthly costs are the ones you pay at zero bookings. For a hypothetical one-bedroom:
- Rent: $1,600
- Utilities and internet: $220
- Short-term rental insurance: $50
- Pricing and messaging software: $30
- Furniture, $8,000 spread over three years: $222
Total: $2,122 a month, before a single guest.
What each booked night actually puts in your pocket is smaller than the nightly rate. In 2025 Airbnb started moving hosts to a single host-only fee of about 15.5% of the booking, and by 2026 that covers nearly everyone. So a $150 night nets about $126.75. Say guests stay three nights on average and pay an $85 cleaning fee while your cleaner charges $80. After the 15.5% comes off the cleaning fee too, each stay costs you about $8 net, or roughly $2.70 a night. Add around $4 a night for coffee, soap and paper goods. You keep about $120 per booked night.
Break-even nights = fixed costs ÷ net per night = $2,122 ÷ $120 ≈ 17.7 nights. Call it 18, or about 59% occupancy, just to get to zero.
Now look at what happens on either side of that line:
- 22 nights booked: 22 × $120 = $2,640, minus $2,122 = about $518 profit.
- 14 nights booked (a slow February): 14 × $120 = $1,680, minus $2,122 = about $442 loss.
Four nights on either side of break-even is the difference between making about $500 and losing about $440, a swing of nearly a thousand dollars. That’s the leverage in arbitrage. It works in both directions, and the slow months arrive every single year.
Run this with your own market’s numbers before you do anything else. If your comparable listings don’t clear break-even comfortably in the slowest season, the answer is no, no matter how good the summer looks.
Three ways it dies that the spreadsheet won’t show you
1. The city says no
Short-term rental rules have tightened a lot. New York City’s Local Law 18 requires hosts to register, live in the unit, be present during the stay, and cap it at two guests. Los Angeles limits short stays to a host’s primary residence, 120 days a year unless you qualify for an extended registration. Neither leaves room for a unit you lease specifically to host. Other cities are friendlier, and rules change often. Read your city’s ordinance and call the permitting office before you sign anything.
2. The landlord finds out
Subletting without permission is usually a lease violation, and a listing with photos of the unit is not hard to find. If you do this, get permission written into the lease as an addendum. A longer lease term, proper insurance and professional cleaning are the things that tend to get an owner to yes.
3. The good months were never the average
People model their July and live through their January. Always build your plan on the worst month you can reasonably expect.
The version I’d try first: 30 days and up
If I were starting today, I’d look hard at mid-term rentals before nightly ones. In a lot of cities, stays of 30 days or longer fall outside short-term rental rules, since they’re treated more like regular tenancy (check your own city’s exact line). Traveling nurses, people relocating for work and families between houses need furnished places for one to three months.
The math changes shape. The rate per night is lower, but you clean once a month instead of eight times, you aren’t answering messages at midnight, and income is much steadier. Sites built for that audience, like Corporate Housing by Owner, are where a lot of those stays get booked.
Here’s an illustrative example (not a real person): Keisha, a respiratory therapist, leases a two-bedroom near a hospital with her landlord’s written OK for 30-plus-day stays. She rents it to traveling clinicians at a monthly rate a few hundred dollars above her lease, so the margin is thin but the months with a tenant are predictable. The furniture is paid off by her second year. It’s not exciting. It’s supposed to be boring.
If you do go nightly, signing up as an Airbnb host is straightforward. Just have the permission and the permit sorted first.
What I’d stack next to it
This is the part I find most interesting, and it’s the part almost nobody talks about. To do arbitrage the right way, you have to build a relationship with a property manager. You prove you pay on time. You keep the unit clean. They start to trust you.
That same manager usually decides what goes in the lobby, the laundry room and the fitness center. In a complex of 150 or 200 units, a vending machine in the right spot is a second small income stream with a completely different risk profile: no lease, no guests, no platform fee, and if the spot is slow, you move the machine somewhere else. Your apartment is one concentrated bet. The machine is a small diversified one sitting in the same building.
I’ve written before about why I think relying on one job is its own kind of risk, and the same logic applies here: relying on one unit is a concentration problem. Two lines of income from one relationship is a better position than one line.
If you want a list of managed apartment complexes in your area with the manager’s contact info, VendBuddy (full disclosure: it’s my company) builds that from a ZIP code, and you can buy a small pack of credits instead of a monthly plan. It’s the same list whether you’re pitching a lease or a lobby machine.
I kept this post at the level of the decision. The nuts-and-bolts version lives on VendBuddy’s blog: How to Start Airbnb Arbitrage in 2026: Permission, Rules, Math.
How I’d decide, in one paragraph
If your city allows it, your landlord signs off in writing, and your slowest realistic month still clears break-even with room to spare, arbitrage can be a real small business. If any of those three is shaky, look at mid-term rentals, or look at something with less concentration. House hacking gets you ownership and a tenant paying down your loan, and the comparison in vending machines vs real estate is worth reading before you commit furniture money to someone else’s building.
A prompt for this week: write your break-even number on a sticky note. Fixed costs divided by what one booked night really nets you. If you can’t fill that many nights in February, you have your answer.
