Free tool · No email required

Customer LTV & Payback Calculator — Free Tool

Customer Lifetime Value (LTV) is the total gross profit one customer generates before they stop buying. LTV answers the question that decides whether your ads can scale: how much can I actually spend to acquire a customer? Enter your repeat-purchase numbers — or estimates — and see LTV, payback period and your safe acquisition ceiling.

Customer economics

How many years a customer keeps buying. 1 = one-off purchases.

Reading your LTV numbers

For one-off purchase businesses (many Singapore service businesses), frequency is 1 and lifespan is 1 — LTV is simply one order's gross profit. In that case, judge ads purely on first-order margin: use the Break-Even ROAS Calculator.

Want these numbers checked by a human?

Digimau reviews existing ad accounts, funnels and metrics free — including whether your LTV targets are realistic for Singapore in 2026. Reply times are usually under an hour on weekdays.

Methodology: standard performance-marketing formulas (see copy above). Estimates are planning aids — actual results depend on creative, offer and market. Pair this tool with the ROAS Calculator and our Marketing Budget Calculator. © Digimau Pte Ltd. Cite with a link.

Frequently asked questions

What is customer lifetime value (LTV)?

LTV is the total gross profit a customer generates across their whole relationship with your business — average order value × purchases per year × gross margin × customer lifespan.

What is a good LTV to CAC ratio?

3:1 is the classic healthy benchmark — S$3 of gross profit per S$1 of acquisition cost. Below 2:1, acquisition is unprofitable at scale; above 4:1, you are likely under-investing in growth.

What is payback period?

Payback period is how long a customer takes to generate enough gross profit to cover their acquisition cost. Under 3 months supports aggressive ad scaling; over 12 months means growth will be cash-hungry.

How can I improve LTV?

Increase purchase frequency (repeat-purchase offers, subscriptions), raise order value (bundles, upsells), extend lifespan (retention programmes), or improve margin (pricing, cheaper delivery). Small changes in frequency compound heavily in LTV.

Is this calculator free?

Yes — no email required. Enter order value, frequency, margin and lifespan to see LTV, your max acquisition spend at a 3:1 target, and payback period.