Ecommerce LTV:CAC Ratio Calculator

Check whether acquisition pays back

Use figures from a mature customer group where possible. Lifetime value should use gross profit, not revenue alone.

Gross-profit LTV:CAC ratio

3.67x

Each $1 of customer acquisition cost returns an estimated $3.67 in lifetime gross profit, with payback in about 6.5 months.

Lifetime revenue per customer
$400
Lifetime gross profit per customer
$220
Estimated acquisition payback
6.5 months

Know how much room you have to acquire a customer.

What the result shows

How many dollars of estimated customer lifetime gross profit you receive for each dollar spent on customer acquisition, and the estimated payback time.

How it is calculated

Multiply average order value by yearly orders, customer lifespan, and gross margin. Divide that lifetime gross profit by customer acquisition cost.

How to use it

Use the ratio with payback time when setting acquisition budgets. A high lifetime return can still strain cash when it takes too long to recover customer acquisition cost.

What this result leaves out

Order frequency, customer lifespan, and margin are held steady. Discounts, returns, cohort differences, changing purchase behaviour, and when cash is collected are not included.

Read the LTV:CAC guide

Stop rebuilding the same calculation every week.

Nummbas brings sales, costs, products, ads, and cash flow into one view so the numbers change when the business does.