Free tool · SaaS Metrics
Customer Churn Analysis
Quantify the annual revenue at risk from your current churn rate. Model what hitting your retention target is actually worth before investing in customer success.
01 · Current business metrics
02 · Current monthly churn rate: 3%
15 customers lost per month · $1,500 MRR lost
03 · Target monthly churn rate: 1%
Set the churn rate your retention programme aims to hit
Results
LiveMonthly MRR lost to churn
$1,500
3% of $50,000 MRR each month
Annual revenue at risk
$18,000
if churn rate stays unchanged
Monthly saving at target churn rate
$1,000
Annual saving at target
$12,000
reducing churn from 3% to 1%
Customer LTV at current churn
$3,333
33 month avg lifetime
Customer LTV at target churn
$10,000
100 month avg lifetime
Estimates based on compound monthly growth. Results are directional, not a guarantee of performance.
12-month cumulative churn impact
| Month | Churned customers | Churned MRR | Cumulative MRR lost (current) | Cumulative MRR lost (target) | Monthly saving |
|---|---|---|---|---|---|
| Mo 1 | −15 | −$1,500 | $1,500 | $500 | +$1,000 |
| Mo 2 | −15 | −$1,500 | $3,000 | $1,000 | +$2,000 |
| Mo 3 | −15 | −$1,500 | $4,500 | $1,500 | +$3,000 |
| Mo 4 | −15 | −$1,500 | $6,000 | $2,000 | +$4,000 |
| Mo 5 | −15 | −$1,500 | $7,500 | $2,500 | +$5,000 |
| Mo 6 | −15 | −$1,500 | $9,000 | $3,000 | +$6,000 |
| Mo 7 | −15 | −$1,500 | $10,500 | $3,500 | +$7,000 |
| Mo 8 | −15 | −$1,500 | $12,000 | $4,000 | +$8,000 |
| Mo 9 | −15 | −$1,500 | $13,500 | $4,500 | +$9,000 |
| Mo 10 | −15 | −$1,500 | $15,000 | $5,000 | +$10,000 |
| Mo 11 | −15 | −$1,500 | $16,500 | $5,500 | +$11,000 |
| Mo 12 | −15 | −$1,500 | $18,000 | $6,000 | +$12,000 |
How to use the churn analysis tool
Three inputs, one target. See annual revenue at risk and the 12-month cumulative impact of reducing churn.
- 01
Enter your current customer base and MRR
Add your total paying customers and current monthly recurring revenue. The tool derives ARPU (average revenue per user) from these two numbers, which drives the LTV calculation.
- 02
Set your current monthly churn rate
Monthly churn rate = customers lost ÷ starting customers × 100. Find it in your billing system or CRM. The helper text shows exactly how many customers and how much MRR you lose at the current rate each month.
- 03
Set your target churn rate
Enter the churn rate your retention programme is trying to hit. The calculator automatically limits the target to your current rate so the comparison always shows improvement.
- 04
Read the annual revenue at risk
Annual revenue at risk is the MRR you'll lose in the next 12 months if you don't reduce churn. This is the number that justifies investment in customer success, onboarding, or product improvements.
- 05
Check the cumulative churn impact table
The 12-month table shows cumulative MRR lost at your current rate vs. your target rate, and the saving at each month. Month 12 shows the total revenue preserved by hitting your retention target.
Why use this tool?
Churn as a dollar amount, not a percentage
A 3% monthly churn rate sounds manageable. This calculator shows it as an annual revenue figure – which is the number that belongs in a board conversation about CS investment.
LTV impact of churn reduction is non-linear
Halving your churn rate more than doubles customer lifetime. The LTV comparison shows this clearly – from 33 months to 100 months average lifetime if you move from 3% to 1% monthly churn.
Revenue saved vs. revenue at risk
The two outputs together frame the investment decision: annual revenue at risk (the cost of not acting) vs. annual saving at target (the value of acting). Both belong in a retention programme proposal.
Cumulative table shows the compounding cost of delay
Churn compounds monthly. The table makes the cost of a 3-month delay visible – you can see exactly how much additional revenue is lost if you start the retention programme in month 4 instead of month 1.
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Open toolWho'll get the most out of this
- Head of Customer SuccessBuilding the business case for CS investment by showing annual revenue at risk from current churn.
- SaaS Founder / CEOUnderstanding the compounding revenue impact of churn before deciding how much to invest in retention.
- Investor / CFOStress-testing customer churn assumptions in a financial model or investor deck.
- Product ManagerQuantifying the revenue value of product improvements that reduce churn before prioritizing them.
- Revenue OperationsModeling churn reduction scenarios for quarterly planning and board reporting.
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Frequently asked questions
What does this customer churn analysis tool model?+
The customer churn analysis calculator takes your current customers, MRR, monthly churn rate, and target churn rate, then quantifies the annual revenue at risk from current churn and the annual revenue saved by hitting the target. It also shows customer LTV at both rates and a 12-month cumulative table comparing MRR lost at the current rate vs. the target rate. The tool converts a churn percentage into a dollar figure – the number that drives retention investment decisions.How do you calculate monthly customer churn rate?+
Monthly customer churn rate = (customers lost during the month ÷ customers at the start of the month) × 100. Example: if you started January with 500 customers and lost 15, your monthly churn rate is 3%. Pull the number from your billing system (Stripe, Chargebee, or similar) or CRM. For SaaS with monthly billing, this is a clean calculation. For annual contracts, calculate churn on the contract renewal date rather than monthly.What is annual revenue at risk from churn?+
Annual revenue at risk = monthly MRR lost to churn × 12. Monthly MRR lost = total MRR × monthly churn rate. If you have $50,000 MRR and a 3% monthly churn rate, you lose $1,500 MRR per month and $18,000 per year – even if your total MRR stays flat because new bookings replace the churned revenue. Revenue at risk is the gross churn figure, not net – it shows the total retention problem before new business masks it.How does reducing churn improve customer lifetime value (LTV)?+
Customer lifetime value = ARPU × average customer lifetime in months. Average customer lifetime = 1 ÷ monthly churn rate. At 3% monthly churn, average lifetime is 33 months. At 1% monthly churn, it's 100 months. If ARPU is $100, LTV doubles from $3,300 to $10,000 – a 3× LTV improvement from a 2-percentage-point churn reduction. The customer churn analysis calculator shows both LTV figures so you can see the non-linear impact of even small churn reductions.What monthly churn rate should I be targeting?+
Monthly churn rate benchmarks: below 1% for enterprise SaaS with long contracts and high switching costs. 1–2% for mid-market SaaS. 2–5% for SMB SaaS with monthly billing. If you're above 5% monthly, new business is likely just replacing churned revenue and growth will be slow regardless of acquisition investment. Best-in-class SaaS companies target 0.5–1% monthly churn; this implies 94–95% annual retention.What's the difference between gross churn and net revenue retention?+
Gross churn measures only the revenue lost to cancellations and downgrades, expressed as a percentage of starting MRR. Net revenue retention (NRR) = (starting MRR + expansion MRR − churned MRR) ÷ starting MRR × 100. NRR can exceed 100% if expansion from existing customers exceeds churn. This customer churn analysis tool models gross churn – the actual revenue loss from departing customers – without netting expansion. Use the ARR Calculator to model NRR.What causes high customer churn in SaaS?+
The most common causes of high churn: poor onboarding (customers never reach the 'aha moment' before their trial or first billing period ends); lack of ongoing engagement (no proactive check-ins, low product adoption); pricing-value mismatch (customers don't feel they're getting value at the price point); poor fit customers in the funnel (sales team closing accounts that aren't a good fit); and product gaps (customers leave when a competitor releases a feature they need). The first three are addressable by customer success; the last two require product or sales changes.How do I build a business case for a customer success programme using this calculator?+
Run the customer churn analysis with your current churn rate and a target rate achievable through proactive CS (typically 30–50% churn reduction from baseline). The annual saving at target rate is the revenue benefit. Compare it to the cost of a CS hire or tooling investment: if annual saving is $200,000 and a CS manager costs $120,000 loaded, the business case closes in under 8 months. The 12-month cumulative table shows the payback period visually.How is monthly churn rate different from annual churn rate?+
Annual churn rate ≠ monthly churn rate × 12. Because churn compounds, annual churn = 1 − (1 − monthly churn rate)^12. At 3% monthly churn, annual churn is 1 − (0.97)^12 = 30.6%, not 36%. Conversely, 20% annual churn = 1 − (0.8)^(1/12) − 1 = 1.85% monthly churn. When comparing churn benchmarks, always confirm whether they're monthly or annual – they're not interchangeable.How do I use customer churn analysis to prioritize product improvements?+
First, segment churn by cohort: which plan, acquisition channel, or use case has the highest churn? The customers churning at the highest rate reveal where the product-market fit is weakest. Then model the annual revenue at risk for each segment using this calculator. A segment losing $5,000 MRR/month at 8% churn has $60,000 annual revenue at risk – if a single product improvement could halve that churn, it's worth $30,000/year. This frames product investment in revenue terms, which gets it prioritized against other initiatives.