Short-Term Rental Calculator
Short-term rental math has moving parts a long-term rental does not: turnovers, platform fees, utilities you pay, and an occupancy number you are guessing at. This Airbnb calculator gives you cashflow and the figure that actually measures your risk, breakeven occupancy. This page is for anyone weighing a first short-term rental. Nothing is saved, and there is no email wall.
What the listing puts in your pocket each month after the platform, cleaning, utilities, reserves, and the mortgage.
You have 1.7 points of cushion below your 62% assumption before the property costs you money.
Annual cashflow divided by the cash you put in, including furnishing.
About 6.3 separate stays, so that many turnovers.
Revenue per available night. The metric other hosts compare on.
The long-term rent that would leave you the same income, with far less work. A tenant pays their own utilities, and the supplies and subscriptions go away.
Estimates only, for education. Short-term rental income swings with season, competition, and local rules, and the rules are the real risk: many cities cap or ban non-owner-occupied short-term rentals, and a permit change can turn this into a long-term rental overnight. Check the ordinance and the HOA before you buy, and pressure-test the numbers at a lower occupancy than you expect.
How do you calculate short-term rental income?
Multiply nightly rate by nights booked, which is your occupancy applied to roughly 30.4 nights a month, then add cleaning fees collected. Subtract the platform cut, cleaning costs per turnover, utilities, supplies, insurance, taxes and a maintenance reserve. What remains after the mortgage is cashflow.
Key takeaways
- Breakeven occupancy matters more than projected cashflow, because occupancy is the input you are least sure about.
- Shorter average stays mean more turnovers. Cleaning is both revenue and cost, and the two rarely cancel out.
- A short-term rental grosses more than a long lease but nets far less than the gap implies, because you pay the utilities, supplies and insurance.
- The real risk is regulation. A permit change can turn your short-term rental into a long-term rental with no notice.
How short-term rental income is calculated
A long-term rental has one number on the income side. A short-term rental has four, and they interact.
- Nights booked is occupancy times about 30.4 nights a month.
- Nightly revenue is your blended annual rate times those nights, not your peak-season rate.
- Cleaning revenue depends on turnovers, which is nights booked divided by average stay length.
- Costs split into percentage-based (platform, management, maintenance) and fixed (utilities, supplies, subscriptions, taxes, insurance).
Average stay length is the input people skip and it changes the answer. At 19 nights booked a month, three-night stays produce about six turnovers while seven-night stays produce under three. If your cleaner charges $95 and you collect $110, each extra turnover adds a little margin. If those numbers are reversed, each one costs you.
RevPAR, revenue per available night, is the metric other hosts compare on. It is simply nightly rate times occupancy, which makes it useful for benchmarking against listings near you.
Why breakeven occupancy is the number that matters
Projected cashflow tells you what happens if your occupancy guess is right. Your occupancy guess is the least reliable input on the page. Breakeven occupancy tells you how wrong you can be before the property starts costing you money, which is a far more useful thing to know.
Compare it against what similar listings in that specific neighbourhood actually achieve, not a city-wide average. Then judge the gap:
| Cushion | What it means |
|---|---|
| 15+ points | Survives a soft season or a new competitor nearby |
| 5 to 15 points | Workable, but the deal depends on you running it well |
| Under 5 points | Too dependent on peak season; one bad quarter hurts |
Pressure-test it. Run the calculator at a lower occupancy than you expect and a nightly rate below your best month. A property that still works under those numbers is a property that survives a soft year.
Short-term vs long-term rental
The calculator reports an equivalent long-term rent: the rent a tenant on a twelve-month lease would need to pay to leave you the same income. It only adds back the costs a landlord still carries on a long lease, since the tenant pays their own utilities and the supplies and subscriptions disappear entirely.
That comparison is often uncomfortable, and it should be. A listing grossing $3,800 a month can net the same as a $2,432 long-term lease once the platform, the cleaner, the utilities and the reserves are paid. If those are close, you have taken on guest messaging, cleaner scheduling and regulatory exposure for no additional return.
Sometimes the number justifies it comfortably. Often it does not, and the honest comparison is worth making before you furnish anything. For the fuller treatment see short-term vs long-term rentals and is Airbnb a good investment.
Regulation and tax you should check first
No spreadsheet protects you from a rule change. Before you buy, read the local ordinance and the HOA covenants, and confirm the property still works as a long-term rental if short-term letting is restricted later. Treat that as a condition of the purchase, not an afterthought.
On tax, the IRS sets one threshold worth knowing. If you rent a dwelling unit for fewer than 15 days in the year, you do not report the rental income and cannot deduct rental expenses. Above that, normal rules apply. The same guidance sets a personal-use test: a unit counts as a residence if you use it personally for more than the greater of 14 days or 10% of the days it is rented at fair market price, which limits what you can deduct.
If you will use the place yourself at all, that test matters, and IRS Publication 527 covers rental of vacation homes in detail. Talk to a tax professional about your situation, and read short-term rental tax rules for the plain-English version. To find markets where the numbers hold up, see the best cities for short-term rental investment.
Frequently asked questions
How do you calculate Airbnb income?
Multiply your nightly rate by nights booked, which is occupancy applied to about 30.4 nights a month, then add the cleaning fees guests pay. Subtract the platform commission, what you pay your cleaner per turnover, utilities, supplies, insurance, taxes and a maintenance reserve.
What is a good breakeven occupancy for a short-term rental?
Lower is safer. If your property breaks even at 45% and comparable listings run at 65%, you have twenty points of cushion for a slow season or new competition. If it breaks even at 60% in a 62% market, one bad quarter puts you underwater.
Why does average length of stay matter?
It sets your number of turnovers. At 19 nights booked a month, three-night stays mean about six cleanings while seven-night stays mean under three. Cleaning is both revenue and cost, and the two rarely match exactly, so stay length quietly changes your margin.
Is a short-term rental better than a long-term rental?
It usually grosses more and nets less than the gap suggests, because utilities, furnishing, higher insurance, supplies and management all land on you. It is a small business, not passive income. The calculator shows the equivalent long-term rent so you can compare honestly.
What is the biggest risk with short-term rentals?
Regulation, not occupancy. Many cities cap, permit or ban non-owner-occupied short-term rentals, and HOAs increasingly restrict them. A rule change can convert your short-term rental into a long-term rental overnight, so check the ordinance and the covenants before you buy.
Do I pay tax on short-term rental income?
Generally yes. The IRS has one narrow exception: if you rent a dwelling fewer than 15 days in the year, you do not report the income and cannot deduct rental expenses. Above that threshold, normal rental reporting rules apply.
Related calculators
- Strategy FinderWhether a short-term rental is the right first move for you, or whether something simpler fits better.
- Rental Cashflow CalculatorModel the same property on a twelve-month lease and compare.
- DSCR Loan CalculatorHow lenders size an investment loan on the property's income.
- Closing Costs CalculatorCash to close, which feeds the cash invested figure above.
- BRRRR CalculatorIf the plan is to rehab and refinance before letting it.
Sources
- Internal Revenue Service, Topic no. 415, Renting residential and vacation property · The 14-day rule and the personal-use test that determines how rental income is reported
- Internal Revenue Service, Publication 527, Residential Rental Property · Reporting rental income and deducting expenses, including rental of vacation homes
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