Repeat Customer Profit Calculator
See the real lifetime profit of a customer once repeat purchases are counted — the number that justifies retention spend.
- Free calculator
- Instant estimate
- No signup needed
- Beginner friendly
Enter every amount in the same currency. This selector only changes the symbol shown — it does not convert exchange rates.
Customer lifetime profit
$22.80
Additional repeat profit
$10.80
Repeat customer value
$48.00
If they buy every time
Uplift vs. first-only
+90%
Annualized value
$11.40
Lifetime ÷ lifespan
All calculations are estimates based on average platform fees. Real profits may vary depending on category, ads, and shipping.
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How to use this calculator
- Enter your numbers in each field above — the calculator updates instantly as you type, so there's nothing to submit.
- Use your real figures when you have them, or sensible estimates while you're planning. If a field doesn't apply, leave it at zero.
- Compare the results, then change one input at a time to see how each lever (price, cost, fees, volume) moves the outcome.
Formula
Additional profit = First profit × Repeat rate × Avg repeats · Lifetime profit = First profit + Additional profit · Uplift = Lifetime ÷ First − 1
Worked example
$12 first-purchase profit, 30% repeat rate, 3 avg repeats.
- Additional = 12 × 0.30 × 3 = $10.80
- Lifetime = 12 + 10.80 = $22.80
- Uplift = 90%
Answer: $22.80 lifetime profit — 90% uplift vs. one-time
How it works
Repeat behavior is the multiplier every acquisition depends on. A 30% repeat rate at 3 repeat purchases nearly doubles customer profit — which is why retention usually beats acquisition spend.
How to interpret your results
- Dollar values are shown per sale, per order, or per item unless a result is explicitly labelled monthly, weekly, or daily.
- Percentages (margin, ROI, conversion rate) are easier to compare across products and price points than raw dollars — use them when you benchmark.
- A positive result means you're ahead after the costs and fees you entered. A negative result means the current numbers don't work — change a lever (raise price, cut a cost, lower ad spend) and recalculate.
- Treat the output as a planning estimate, not a guarantee. Fees, taxes, and conversion rates shift over time — re-run the numbers whenever a key input changes.
Common mistakes
- Treating repeat rate and repeat count as the same thing.
- Ignoring the lifespan cap when estimating.
- Modeling repeats without tracking whether the product actually justifies them.
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FAQ
- How is this different from CAC/LTV?
- CAC/LTV compares acquisition cost to lifetime value. This tool focuses on the profit uplift from repeat behavior alone.
- What's a healthy repeat rate?
- 20–40% for many physical goods, higher for consumables and subscriptions. Compare to your last 90 days of data.
Why trust this calculator?
This tool uses standard mathematical formulas and commonly accepted calculation methods, shown openly in the Formula section above so you can verify the math yourself. Results are estimates based on the information you enter and do not account for every individual circumstance. For important financial, tax, legal, medical, or business decisions, please double-check with a qualified professional before acting on the numbers.
Keep going
One calculator rarely tells the full story. Pair this one with a related tool below to pressure-test your numbers from a different angle, or browse Selling & Business Calculators for more in the same category.
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