Guide 3 · Payback
Will this machine pay for itself? Payback explained
What payback actually measures
Payback is the month in which the machine has given you back every dollar you put into it. Not the month it becomes profitable on paper — profit and cash are different things, and depreciation is the reason. Payback is about cash in your bank account.
The calculation is simple in shape. On day one you are down by whatever cash left your business: the deposit if the machine is financed, the whole purchase price if it is not, plus registration, first insurance, delivery and any kit you had to buy with it. Every month after that, the machine brings in hire revenue and pays out its running costs and its finance instalment. Keep a running total. The month that total crosses zero is your payback month.
Two things are deliberately left out along the way. Depreciation is not a cash cost — nobody withdraws it from your account — so it does not appear in the monthly flows. And the resale value is not counted until the month you actually sell, because until then it is a number in a book, not money you can spend.
A worked example: a telehandler
$110,000 telehandler, 30 per cent deposit, five-year hold
| Item | Amount | Note |
|---|---|---|
| Purchase price | $110,000 | |
| Cash out on day one | $33,000 | 30% deposit |
| Loan | $77,000 | 8% over 5 years |
| Loan instalment | $1,561 / month | |
| Maintenance and wear | $280 / month | |
| Insurance | $183 / month | 2% of value per year |
| Share of overhead | $250 / month | |
| Cash out every month | $2,275 |
Now the revenue
At 60 per cent time utilisation the machine is on hire 219 days a year. At a blended $200 per day on hire across a mix of daily, weekly and monthly contracts, that is $43,800 a year, or $3,650 a month.
Cash in $3,650, cash out $2,275, so the machine puts $1,375 a month into the business. Starting from a hole of $33,000:
| Month | Cumulative cash | Where you stand |
|---|---|---|
| 0 | −$33,000 | Deposit paid |
| 12 | −$16,500 | Half way back |
| 24 | +$33 | Payback |
| 36 | +$16,500 | Clear profit from here |
| 60 | +$49,500 | End of the hold |
| 60, after selling at $46,000 | +$95,500 | On $33,000 of your own money |
Payback in month 24, two years into a five-year hold. That is a comfortable machine: three full years of the hold sit on the profitable side of the line, and the resale is a bonus rather than a rescue.
Now change one number
Leave everything else exactly as it is and drop utilisation from 60 per cent to 45 per cent — 164 days on hire instead of 219. Revenue falls to $32,800 a year, or $2,733 a month. Cash out is unchanged at $2,275, because almost none of it depends on whether the machine is working.
| Utilisation | Days on hire | Net cash per month | Payback month |
|---|---|---|---|
| 65% | 237 | $1,675 | 20 |
| 60% | 219 | $1,375 | 24 |
| 55% | 201 | $1,075 | 31 |
| 45% | 164 | $459 | Never, before you sell it |
At 45 per cent the machine is still cash-positive every single month. It never bounces a payment, never looks like a problem, and would pass any casual review. But it is putting back only $459 a month against a $33,000 hole, so at the end of the full five years you are still $5,500 down — and the only thing that rescues the deal is the cheque from selling it.
That is the quiet failure mode of a rental fleet. Nothing dramatic happens. A handful of machines simply never repay their deposits, and the business ends up depending on the second-hand market rather than on its own trading.
Five ways people get payback wrong
- Counting revenue instead of cash. An invoice raised is not cash received. If your customers pay at 60 days, your real payback is two months later than the model says. Model the cash if your terms are long.
- Forgetting the deposit is not the only day-one cost. Delivery, registration, first insurance premium, attachments, telematics, the first set of tyres. On a $110,000 machine these can easily add several thousand dollars to the hole you are climbing out of.
- Including depreciation in the monthly outflow. It is a real cost but not a cash one, and putting it in the monthly flows double-counts: you already paid for the machine, that is what created the hole.
- Counting the resale value early. Residual value only becomes cash on the day someone pays you for the machine. Before that it is an estimate, and estimates of used equipment prices have a long history of being optimistic.
- Using last year's best month as the run rate. Use the full year, including the quiet season and the three weeks it spent waiting for a part.
What payback month should you aim for?
There is no universal answer, but there is a useful rule: payback should land inside the first half of the period you intend to keep the machine. On a five-year hold, that means month 30 or earlier. It gives you two and a half years of clear profit and, more importantly, it means a bad year in the middle of the hold is survivable rather than fatal.
Adjust for the type of machine. A specialist unit with few competitors and long contracts can carry a later payback because its revenue is predictable. A general-hire machine competing with four other yards should pay back sooner, because its utilisation can drop fifteen points in a quarter with no warning.
And be honest about the hold period itself. If your real pattern is to sell at three years to keep the fleet young, then the machine must pay back inside about eighteen months — not thirty — and a great many purchases that look fine on a five-year model do not survive that test.
Payback is necessary, not sufficient
A short payback does not by itself make a good purchase. Check three other things alongside it:
- Lifetime return. A machine can pay back quickly and still earn a poor return over five years if its resale value collapses.
- How much of the return comes from the sale. If most of the profit arrives on disposal day, you are running a used-equipment trading business with a rental fleet attached, and you are exposed to a market you cannot control. More on residual values.
- What happens in a downturn. Re-run the payback at fifteen points lower utilisation. If it disappears entirely, as it does in the example above, the purchase is a bet on the market staying busy.
Common questions
What is a good payback period for rental equipment?
A useful rule is that payback should land inside the first half of the period you intend to keep the machine — month 30 or earlier on a five-year hold. That leaves you two and a half years of clear profit and, more importantly, it means a bad year in the middle of the hold is survivable rather than fatal. Adjust for the machine: a specialist unit on long contracts can carry a later payback than a general-hire machine competing with four other yards.
Should the resale value count towards payback?
Not until you sell. Residual value is an estimate until someone actually pays you for the machine, and estimates of used equipment prices have a long history of being optimistic. Show it separately, as a final inflow in the month of disposal. If a machine only reaches payback once the resale is included, say so in exactly those words — it is a materially different deal from one that pays back out of trading.
Why does depreciation not appear in the payback calculation?
Because nobody withdraws it from your bank account. You already paid for the machine, and that payment is what created the hole you are climbing out of. Putting depreciation into the monthly outflows as well would count the same cost twice and push the apparent payback far later than reality.
Is payback the same as return on investment?
No, and they can disagree. Payback measures how long your capital is exposed; ROI measures how much you earned over the whole life. A machine can pay back quickly and still deliver a poor lifetime return if its resale collapses, and a machine with an excellent lifetime return can keep your money at risk for four of its five years. Look at both.
How do customer payment terms affect payback?
Directly. An invoice raised is not cash received. If your customers pay at 60 days, your real payback is roughly two months later than a revenue-based model shows, and if a large customer stretches to 90 days it is later still. If your terms are long, model the cash receipts rather than the invoices.
See the payback month for your own machine
The calculator shows the month cumulative cash turns positive, the full cashflow underneath it, and what happens when utilisation drops.
Read next
- Buy it or hire it in? The numbers that decideOwnership is fixed cost, hiring in is variable cost, and the crossover is one division. Plus the asymmetry that means you should never buy at the crossover.
- How to calculate equipment rental ratesThe full method, from the seven costs of ownership to the day, week and month rate you publish. With a 3-tonne mini excavator worked through end to end.
- What your machine is worth in year three, and why it changes the rateBook depreciation is for tax. Market residuals set your rate. Decline curves by machine family, what an eighteen-point error costs, and how to build your own curve in an afternoon.