Customer Lifetime Value Calculator

Customer Lifetime Value (CLV) is the total revenue a business can expect from a single customer account throughout their entire relationship. It considers average purchase value, purchase frequency, and customer lifespan. CLV helps businesses understand how much they should invest in acquiring and retaining customers.

There is no single published answer. The 3:1 figure is the most widely repeated rule of thumb — it means you earn $3 in lifetime gross profit for every $1 spent acquiring a customer — and it is a reasonable starting point rather than a standard. Below 1:1 you are losing money on each customer; between 1:1 and your target there is room for improvement. Note that a very high ratio can also mean you are under-investing in growth. This calculator lets you set your own target and judges the result against it.

You can improve CLV by increasing purchase frequency (loyalty programs, email marketing), raising average order value (upselling, cross-selling, bundling), extending customer lifespan (better onboarding, customer success programs, proactive support), and improving profit margins (reducing COGS, optimizing operations).

The payback period is the number of months it takes to recover your customer acquisition cost (CAC) from a customer's gross profit. A shorter payback period means faster cash flow recovery. "Under 12 months" is a commonly quoted target and "under 18 months" is often cited for SaaS — both are rules of thumb with no single published source, and the right target depends on your cash position and growth rate. If a customer generates no positive annual gross profit, the CAC is never recovered and this calculator reports the payback as "Never" rather than 0 months.

This calculator uses the simple CLV formula: CLV = Average Purchase Value x Purchase Frequency x Customer Lifespan x Profit Margin. The net customer value subtracts the Customer Acquisition Cost (CAC). The CLV:CAC ratio divides CLV by CAC to show return on acquisition spend.