Thinking about buying another inflatable? Plug in the unit cost, your rental rate and how often you book it to see exactly when it pays for itself — plus your monthly profit and first-year return on investment.
| Revenue / active month | $0 |
| Variable cost / month | $0 |
| Fixed cost / month | $0 |
| Profit / active month | $0 |
| First-year profit | $0 |
| First-year profit after unit cost | $0 |
Estimate only. Demand for inflatables is seasonal and weekend-weighted — model your real active months, not 12.
Rennt gives you a branded booking site customers reserve themselves — with real-time availability so you never double-book, deposits up front and signed agreements. $9/month, 0% commission, live the same day. Free for 14 days.
Start freeThe math is simpler than it feels. Your monthly profit per unit is the rental rate times bookings, minus the per-rental costs (cleaning, delivery fuel and crew), minus the share of fixed costs like insurance and storage. Payback time is just the purchase price divided by that monthly profit. First-year ROI is the profit the unit throws off in its first active year, expressed as a percentage of what you paid for it. The calculator above runs all three from your own inputs.
A commercial-grade inflatable typically runs $1,500–$4,000 and rents for $150–$250 a day in most markets. Even at a conservative four to six bookings a month, a single unit usually clears its purchase price inside its first season and becomes high-margin recurring income after that. That's why inflatables are one of the most popular first purchases for new party rental operators — and why the smart move is buying the next one only once the first is booking out.
Two things quietly change the picture. The first is seasonality: in most of the country, bounce house demand is concentrated in warm months and weekends, so modeling twelve equal months will overstate your return. Use your realistic active months instead. The second is the reserve for wear and replacement — inflatables don't last forever, and blowers, stakes and repairs add up. Folding a few dollars per rental into your variable cost keeps the calculator honest.
Notice how sensitive the result is to bookings per month. Buying a cheaper unit barely moves your ROI; getting two more bookings a month transforms it. The single biggest driver of bounce house profitability isn't the equipment — it's how full your calendar stays. That's the case for taking bookings online: an always-on storefront with live availability captures the weekend inquiries you'd otherwise miss while you're out on a delivery, and locks them in with a deposit instead of a "let me check and get back to you."
That's exactly what Rennt does — a branded booking site for $9/month with no cut of your bookings. Next, work out what to charge for delivery, or read the bounce house rental business essentials.