Comprehensive Guide
Learn more in our Business & Tax Guide.
How it works
customer lifetime value calculator takes your inputs and produces customer lifetime value, annual value per customer, total revenue per customer, max acquisition cost (1/3 clv). Calculate the total revenue a single customer generates over their entire relationship — the metric that determines how much you can spend to acquire them. You provide 4 inputs: Average purchase value (currency, in dollars) (default: 120 dollars); Purchases per year (number) (default: 8); Customer lifespan (years) (number) (default: 4); Gross margin % (percent, in percent) (default: 60 percent). The calculator returns 4 outputs: Customer lifetime value (the primary result); Annual value per customer (a secondary output); Total revenue per customer (a secondary output); Max acquisition cost (1/3 CLV) (a supplementary figure). Business tax and finance calculations combine multiple moving parts — revenue, expenses, depreciation, tax brackets, and timing — in ways that make back-of-envelope estimates unreliable. This calculator handles the interaction of those variables precisely, so your business decisions rest on real arithmetic. The underlying formula: Annual value = Average purchase × Purchases per year | Total revenue = Annual value × Lifespan | CLV = Total revenue × Gross margin% | Max CAC = CLV ÷ 3 With the default values, customer lifetime value is computed from the interaction of every input field — change any one of them and the result updates immediately, so you can stress-test different scenarios without re-entering the whole form. Adjust the inputs to match your real financial situation. The defaults are realistic starting points, but every person's circumstances differ — your actual income, expenses, rates, and timelines will produce a different answer. Use the tool iteratively: start with the defaults, then change one variable at a time to see which factor has the largest impact on your outcome.Formula
Annual value = Average purchase × Purchases per year | Total revenue = Annual value × Lifespan | CLV = Total revenue × Gross margin% | Max CAC = CLV ÷ 3
Tips
- The general rule: spend no more than 1/3 of CLV on customer acquisition.
- CLV drives every growth decision: marketing budget, pricing, and customer service investment.
- Track CLV by customer segment — your best customers may be worth 5x your worst.
- Increasing customer lifespan by 1 year often has more impact than increasing purchase frequency.
Frequently asked questions
What is a good customer lifetime value?
CLV should be at least 3x your customer acquisition cost (CAC). If you spend $100 to acquire a customer, CLV should be at least $300. Higher ratios mean more profitable growth.
How do I increase customer lifetime value?
Four levers: increase average purchase value (upselling, premium tiers), increase purchase frequency (engagement, reminders), extend customer lifespan (retention, loyalty programs), and improve gross margin (pricing, cost reduction).
How accurate are the calculator results?
The math is exact — the same formulas a financial professional would use by hand. The precision of the output depends entirely on how realistic your inputs are. Use your actual numbers rather than estimates when possible. The defaults are reasonable starting points, but your real income, rates, and timeline will produce a different result.