Vending machines are one of the few genuinely passive income businesses available to individual operators. Once a machine is placed and stocked, it generates revenue around the clock without requiring your physical presence. But profitability varies enormously depending on four variables: product margin, sales volume, location rent, and restock efficiency.

Understanding gross vs. net profit. Gross profit is your revenue minus product cost. If you sell a bag of chips for $1.50 that you bought for $0.60, your gross margin is 60%. But gross profit does not tell the real story. Net profit subtracts location rent, restock mileage at the IRS rate of $0.67/mile, and additional operating costs. A machine generating $1,200/month in gross revenue can net anywhere from $200 to $900 depending on these factors.

Location is everything. The difference between a machine at a low-traffic office versus a hospital, gym, or school cafeteria can be 5 to 10 times in daily sales volume. High-traffic locations often charge rent — either a flat monthly fee or a percentage of gross sales, typically 10 to 25%. Keep location rent below roughly 15% of gross revenue. This calculator lets you model different rent scenarios before you commit to a contract.

Product mix and margin. Traditional snack and beverage machines operate on 40 to 55% gross margins. Specialty vending — healthy snacks, phone accessories, PPE, or refrigerated meals — can push margins to 60 to 70%, but requires more frequent restocking and higher upfront machine cost. A $2.00 item with 60% margin outperforms a $1.00 item at the same margin at identical sales volume.

Startup cost and payback period. A new combo machine runs $4,000 to $8,000. Used machines in good condition can be found for $1,500 to $3,000 through restaurant supply auctions or liquidators. Factor in initial inventory ($200 to $400), delivery, and a business license. At $400/month net profit, a $5,000 machine pays back in about 12 to 13 months — the payback field shows you that number in real time.

Scaling a route. Most successful vending operators run 5 to 20 machines. The economics improve significantly at scale: a single restock trip can service multiple machines, spreading mileage cost across more revenue. Use the machine stepper above to model your total route profit and see how each additional machine affects your bottom line.