Bounce house rental ROI calculator

What each field means, and where to get a real number

Purchase price

What this one unit costs you all-in: the inflatable itself plus the blower, stakes, ballast, tarp and bag it needs to go out. Judging a unit on the sticker price alone flatters it.

Where to get itYour supplier quote, delivered, plus the accessory line. New commercial units run roughly $1,500 to $8,000 depending on size and type (per Jump Centers 2025 and Bounce Horizon), and combo units that pair a bounce area with a slide start around $2,200 (per Jump Centers).

Rentals per month (in season)

Bookings in a BUSY month, not an annual average. The season length field handles the quiet half of the year, so averaging here counts the off-season twice. This is the input the whole result swings on.

Where to get itYour own booking history for a comparable unit. With none, count the Saturdays in a month and be honest about how many you can deliver, set up, collect and clean single-handed. Roughly 90% of rentals land on a weekend, so a one-truck operator has fewer slots than a month suggests.

Price per rental

What a customer pays for this unit for one booking, before any delivery surcharge you pass straight through. Use the rate you actually quote, not the rate on your best weekend.

Where to get itYour own quotes, checked against three local competitors’ published rates. Typical day rates run $150 to $250 for a basic bouncer, $200 to $500 for a combo unit, and $300 to $550 for a water slide (per JumpOrange and Thumbtack). Those are the trade’s ranges, not your town’s.

Your cost per rental

VARIABLE cost only: what one more booking costs you. Fuel for the round trip, cleaning supplies and the water, patch material, card processing on that booking, and a helper’s pay if you use one. Insurance and storage do not belong here: you pay those whether or not the unit goes out, and adding them makes every unit look worse than it is.

Where to get itTrack one real job end to end, from loading to the unit being dry and folded. Most operators discover the number is larger than the fuel receipt and smaller than they feared.

Season length

Months a year THIS unit actually rents. It is what stops a first-year profit figure from quietly assuming twelve busy months.

Where to get itYour own climate and calendar. A bounce house typically rents about seven or eight months a year; a water slide earns only in warm months and so runs shorter, which is why its higher day rate does not automatically make it the better buy.

The same unit, run twice

One unit, one rate, one season length. The only thing that changes between these two is how many weekends it books. Both run through the same function the calculator above uses. Read them as a pair: the distance between them is the honest range for a unit you have not owned yet.

Illustrative, not survey data and not a projection. The purchase price and day rate are mid-points of public 2025–2026 ranges attributed in the field notes above; the booking counts are chosen to bracket a first season, not measured from one. Payback is counted in ACTIVE rental-months.

What this result does not tell you

• Contribution is not profit. The calculator charges no fixed costs against the unit: insurance, storage, the truck and your booking tools are all paid whether or not it goes out. A fleet-level net margin is therefore lower than the first-year figure here suggests, and 20% to 40% net is the range operators commonly report (per Happy Jump and JumpOrange).
• Payback is in rental-months, not calendar months. A payback of four active rental-months is not four months from purchase. Buy in November and the clock does not start until spring. That is the single most common way a payback figure gets read too optimistically.
• The booking count is an input, not a finding. Everything downstream is arithmetic on a number you supplied. The calculator cannot tell you whether your market wants this unit, and it will happily return a handsome result from an optimistic guess. That is what the second worked example above is for.
• It does not price your labor. Loading, driving, setting up, tearing down, cleaning, and the admin around each booking are unpaid in this model. A unit that pays back quickly on paper can still be a poor trade for the hours it costs you.
• It ignores what happens to the unit. No depreciation, no resale value at retirement, and no allowance for the unit that fails in its second season and never reaches payback. Real fleets have both the unit that outlasts its numbers and the one that does not.
• It is not tax advice. Everything here is before income tax, before any sales tax you collect and remit, and before how your accountant chooses to treat the purchase. Read first-year profit as a trading figure, not as money in your pocket.

Frequently Asked Questions

How fast should a bounce house pay for itself?

A commercial unit that books most of its in-season weekends commonly pays back within one to two seasons, and that is the target worth judging a purchase against. A unit that takes longer is not automatically a mistake, since a premium combo carries a higher rate for years, but a long payback on an optimistic booking count is the warning the calculator is there to give you.

Why is payback measured in rental-months instead of months?

Because a bounce house earns in about seven or eight months of the year, so a calendar month is not a unit of anything here. Counting in active rental-months keeps the figure honest about seasonality and comparable between a unit that rents all summer and one that only earns in the hottest weeks. Multiply by your season length to see how many calendar years that actually is.

Why is my first-year profit negative?

Because one season of contribution has not yet caught the purchase price. On a unit bought mid-season that is an ordinary year-one result rather than a verdict on the unit. The number turns as soon as the second season starts against a cost already partly recovered. It becomes a real warning when a full season at your realistic booking count still cannot close the gap.

Does this include insurance, storage, and the truck?

No, deliberately. Those are fixed costs that do not change when one more booking happens, so charging them against a single unit would tell you nothing about whether that unit was a good buy. Put them in the startup cost calculator for launch, and read the profit margins chapter for how they land on the year.

Want the argument rather than the instrument? Read the chapter on rental profit margins. It covers why total revenue misleads, how utilization decides a season, and how to rank a fleet once you have one.

For the category-by-category view, meaning which kinds of unit tend to earn and which quietly disappoint, which inflatables actually make money ranks the catalog, and cleaning, maintenance, and knowing when to retire a unit covers the repair cost this calculator asks you to estimate.