How the vending machine ROI calculator works
This calculator uses the same revenue and payback formulas VendBuddy uses inside the operator platform. It's built from real-world inputs across more than 600 placed vending locations: machine cost by class, location multipliers by venue type, average order value ranges for smart vs. traditional machines, and standard COGS / commission / software cost assumptions for the U.S. vending industry.
The formula
Monthly gross revenue = daily traffic × conversion rate × average order value × 30 days × location multiplier. Monthly gross profit = (monthly gross × 0.48) − commission − software cost. Payback = total machine cost ÷ monthly profit. Financing layers in interest and down-payment effects against year-1 net.
What "good" looks like
- Strong payback: under 12 months. Typically requires 200+ daily traffic and a smart/AI machine.
- Solid payback: 12–18 months. Standard for an office or gym at 100–200 daily traffic.
- Reconsider: 18+ months. Either move the machine or renegotiate placement.
Inputs that drive the result
- Daily foot traffic — the single biggest variable. A doubling of traffic roughly doubles revenue.
- Average order value (AOV) — smart machines run $3.50–$10 per transaction. Traditional combos run $1.50–$2.50.
- Conversion rate — 5–8% for typical placements. 10%+ at gyms, hospitals, and factories with captive audiences.
- Commission — 0% on low-volume locations, 10–15% on premium placements like luxury residential.
Frequently asked questions
Is this calculator free to use?
Yes. No signup, no paywall. You can also embed it on your own site with the iframe snippet above.
How accurate are the numbers?
Within ±15% for most placements. The model uses industry-standard COGS, commission, and software cost assumptions. Real-world variance comes from product mix, restock frequency, and seasonality — all of which VendBuddy's full platform models in more depth.
What's the typical payback for a vending machine?
12–14 months for a well-placed machine in the U.S. market. High-traffic locations (gyms, hospitals, factories) can hit 6–9 months. Low-traffic placements often stretch to 24+ months.
Should I buy a smart or traditional machine?
Smart machines run 2–3× the revenue of traditional combos at the same location, but cost more upfront. Above 100 daily visitors, smart almost always wins on ROI. Below that, traditional combos are the safer bet. Read the full smart-vs-traditional breakdown.
Want more than just the math?
VendBuddy turns this same model into a full operator system: lead search by ZIP, contact enrichment for property managers, machine recommendations by location, contract generation, and a route dashboard that tracks your real numbers against the projection. Start free →