⚡ Quick answer
To estimate Customer Lifetime Value (CLV), use the formula: LTV ≈ Average Purchase × Purchases/Year × Years Active.
Lifetime Calculator
Estimate simple customer lifetime value from average purchase value, purchase frequency, and relationship length.
📖 What it is
The Lifetime Calculator is a powerful tool designed to help SaaS startups estimate the simple customer lifetime value (CLV). By inputting average purchase value, purchase frequency, and relationship length, businesses can gain insights into their revenue potential from each client.
This calculator requires three key inputs: the average order size, how often customers make purchases per year, and the expected relationship length in years. The output will provide a straightforward estimate of the revenue you can anticipate from a customer over their lifetime.
Keep in mind that this method simplifies the calculation by not accounting for factors like customer acquisition costs or discount rates. It’s most effective when used with relatively stable customer cohorts and should be treated as an estimate rather than a precise forecast.
How to use
- Identify the average purchase value.
- Determine how often customers make purchases in a year.
- Estimate the average relationship length in years.
- Plug these numbers into the formula.
- Calculate to find the estimated lifetime value.
📐 Formulas
- Lifetime Value (LTV)—LTV ≈ Average Purchase × Purchases/Year × Years Active
- Annual Revenue—Annual Revenue = Average Purchase × Purchase Frequency
💡 Example
Given an average purchase of $80,
4 purchases per year,
and a relationship length of 3 years,
you can calculate:
$80 × 4 × 3 = $960
This means the simple lifetime value is approximately $960.
Real-life examples
E-commerce Store
An online store has an average purchase of $50, with 5 purchases per year over 4 years, resulting in an LTV of $1,000.
SaaS Company
A SaaS company charges $100 per month, sees an average of 12 payments per year, and retains customers for 2 years, leading to an LTV of $2,400.
Scenario comparison
- Low Value Customer—Average purchase of $30, 2 purchases/year, 1 year active = LTV of $60.
- Moderate Value Customer—Average purchase of $80, 4 purchases/year, 3 years active = LTV of $960.
- High Value Customer—Average purchase of $150, 6 purchases/year, 5 years active = LTV of $4,500.
Common use cases
- Estimating revenue potential for SaaS businesses.
- Assessing customer value for subscription models.
- Evaluating marketing budget allocation.
- Analyzing customer retention strategies.
- Forecasting long-term business growth.
- Deciding on customer acquisition costs.
- Determining pricing strategies for products.
- Understanding customer behavior trends.
How it works
The Lifetime Calculator works by multiplying the average purchase value by the number of purchases made each year and the total number of years the customer remains active. This formula provides a straightforward estimate of customer lifetime value without considering discount rates.
What it checks
This tool checks a rough estimate of lifetime revenue per customer using their purchase frequency and tenure.
Signals & criteria
- Average order size
- Annual purchase cadence
- Expected relationship length
Typical errors to avoid
- Using gross revenue without subtracting variable costs for contribution LTV.
- Overstating years active for high-churn cohorts.
- Double-counting subscription and add-on revenue.
Decision guidance
Trust workflow
Recommended steps after getting a result:
- Input accurate average purchase values.
- Ensure frequency reflects realistic customer behavior.
- Confirm relationship length aligns with historical data.
FAQ
FAQ
Is this discounted LTV?
No—this is undiscounted; discounting requires a rate and timing model.
What about subscriptions?
Use MRR × months as an alternative formulation—this model stays purchase-based.