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Acquisition Payback Calculator

Estimate retained orders needed to recover acquisition cost and a constant-order-rate payback period, without assuming lifetime customer value.

By PriceAndProfit Editorial Updated

$
$
orders/month

Fill in the fields: the result appears under the form, with the formula below it.

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Formula and cost boundary

Order threshold = acquisition cost ÷ positive contribution per order; modeled months = threshold ÷ orders per month

Contribution per retained order is measured before acquisition but after the other variable costs. It must be positive. Fractional monthly order frequency is an average across a cohort; it is not a promise about an individual customer. The month result uses the unrounded threshold while the order result rounds up. Churn, cash collection delays and additional fixed costs are not modeled.

Worked example: Steady retained orders

The following inputs are hypothetical values for checking the calculation. They are not recommended prices, wages, margins or platform charges. Keep the units and period shown in each label when replacing them with your own records.

Inputs for this worked example
InputExample value
Acquisition cost per customer $60
Contribution per retained order before acquisition $20
Retained orders per customer per month 0.5 orders/month
Outputs from the displayed inputs
ResultCalculated value
Whole orders to recover acquisition cost 3 orders
Modeled months to contribution payback 6 months
Unrounded order threshold 3 orders

Using the result

Save the input set alongside the source date of each quote or cost record. Review the cost boundary before comparing this result with another report: a contribution measure may exclude overhead, and a cash measure follows payment dates. Display rounding does not change the underlying assumptions. Recalculate when an input changes; the tool does not predict future sales or collections.

Are any rates supplied automatically?

No. Numeric fields are your inputs. Example values demonstrate arithmetic only. Check your contracts and records for the amounts that apply to your business.

Why might a result be unavailable or negative?

A missing denominator or inconsistent inputs can make the calculation undefined. Those combinations are rejected or labeled explicitly. A valid negative result remains visible because it may identify a loss or cash shortfall.

Method reference: OpenStax: Break-Even Points in Units and Dollars. Checked October 22, 2026. Contribution and cost-volume-profit relationships; examples are independently constructed.

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