Months to recover the outlay calculator

Type outlay and monthly profit. The calculator divides one by the other: 12000 and 2000 give 6.0 months, and 10000 and 2500 give 4.0. Plain payback, not NPV and not a unit threshold.

Break-even in units: break-even. Hourly cost: hourly labor cost. Profit per unit: gross profit.

Inputs

Optional extras

Result

Enter a value. The result shows up here.

How it works

Simple payback is outlay divided by profit in a month. 12000 / 2000 = 6.0. 10000 / 2500 = 4.0. 18000 / 1500 = 12.0. 6000 / 500 = 12.0. A dollar next year counts like a dollar today: no discounting, no inflation, no IRR. Tax is not peeled off unless you type profit already after tax.

Monthly profit must be greater than zero. At zero or a loss, payback never arrives and the result is an error, not infinity. Outlay zero at a positive profit is 0.0 months: there was nothing to recover. You cannot type a negative outlay.

You divide outlay by monthly profit and get time. That page counts units from fixed costs and profit per unit. The calculator divides money by money and get time. Hourly labor cost and gross profit help you build that monthly profit, but they do not count months themselves.

Optional extra outlay adds to the start. Optional monthly cost subtracts from profit and computes a more cautious time. 12000 plus 3000 extra at 2000 profit and 500 cost is 15000 / 1500 = 10.0. If profit after the subtraction is not positive, the adjusted payback never arrives, and the plain quotient from the first two fields stays.

The result is in months, with one decimal. 12000 and 2000 stay those amounts in the currency you typed. A comma in 2000.5 works. Skip thousand spaces: type 12000, not 12 000.

An example button inserts outlay and profit together. Profit alone or outlay alone is not enough. Empty extra and empty monthly cost mean you only compute the first quotient.

How to use

  1. In outlay, type the start, for example 12000. That is the currency you think about for payback.
  2. In profit, type the monthly inflow, for example 2000. Zero or a minus will not divide.
  3. Click Calculate. 12000 and 2000 give 6.0 months. 10000 and 2500 give 4.0. 8000 and 2000 give 4.0.
  4. Leave extra outlay empty if the start is complete. 3000 extra on 12000 lifts the numerator to 15000.
  5. Leave monthly cost empty when 2000 is already net. 500 against 2000 leaves 1500 in the denominator and computes a second, longer time.

Formula

months = outlay / monthly profit

Profit > 0. Outlay ≥ 0. No discounting. Optionally: (outlay + extra) / (profit − monthly cost).

Outlay, profit, and payback months

Months = outlay / monthly profit. 12000 at 2000 is 6.0. 10000 at 2500 is 4.0. No discounting.

outlay
The start you want back. 12000 / 2000 = 6.0 months. Zero outlay gives 0.0.
profit
Monthly profit. Must be positive. 2500 at 10000 is 4.0 months.
months
Payback time. 18000 / 1500 = 12.0. Extra 3000 and cost 500 on 12000 and 2000 give 10.0.

Real-life examples

Example 1

12000 / 2000 -> 6.0 months.

Example 2

6000 / 500 -> 12.0 months.

Example 3

24000 / 4000 -> 6.0 months.

Example 4

10000 / 2500 -> 4.0 months.

Example 5

18000 / 1500 -> 12.0 months.

Example 6

5000 / 1000 -> 5.0 months.

Example 7

36000 / 3000 -> 12.0 months.

Example 8

8000 / 2000 -> 4.0 months.

Ways to use this calculator

  • You check how many months a 12000 machine needs when you know about 2000 extra contribution a month.
  • You compare a 12,000 machine at 2,000 a month with a 10,000 option at 2,500, before you pick a variant without computing IRR.

Related calculators

Margin on selling price
Margin as a percent of the selling price.
Mark-up on purchase cost
Mark-up as a percent of the purchase cost.
Price from a target margin
Selling price from a target margin.
Price from a target mark-up
Selling price from a target mark-up.
Gross profit, price minus cost
Profit in money: price minus cost.
Break-even, units to zero
How many units cover the fixed costs.

All business calculators

Frequently asked questions

How many months from 12000 and 2000?

6.0. 10000 and 2500 give 4.0. 18000 and 1500 give 12.0. 5000 and 1000 give 5.0.

Does this discount money over time?

No. A dollar next year is a dollar today here. NPV and IRR sit outside this quotient.

What if monthly profit is 0?

Payback never arrives and the calc will not run. You need a positive month, not zero.

What does outlay 0 at profit 2000 mean?

0.0 months. There was nothing to recover. You cannot type a negative start.

How do extra 3000 and cost 500 enter 12000 and 2000?

Numerator 15000, denominator 1500, adjusted time 10.0. Plain payback from 12000 / 2000 stays 6.0 on the first card.

How is this different from break-even?

The calculator divides outlay by monthly profit and get time. There you divide fixed costs by profit per unit and get units.

Do 12000 dollars and 12000 euros give a different time?

No, if profit is in the same currency. 12000 / 2000 = 6.0 in both writings.

Does a comma in 2000.5 work?

Yes. 12000 / 2000.5 is about 6.0. Do not put a space in 12 000.

Does the calculator peel tax off 2000?

No. You type the profit you want to assume. If 2000 should be after tax, type it that way yourself.

Where do I get monthly profit if I only know price and unit cost?

On gross profit you get cash per unit, then multiply by monthly sales and come back here.

Knowledge sources

Months to recover are outlay divided by the profit you type. This is not NPV.

Page updated in 2026.