Quick answer
For a business with 1,000 subscribers at $49 a month adding 80 a month, cutting churn from 6% to 4% leaves 213 more subscribers after a year and $10,417 more monthly revenue — $60,236 of extra revenue across the year, with no change to acquisition spend.
How the Subscription Churn Impact works, step by step
Enter your subscriber count, average revenue per user, current monthly churn rate, the reduced rate you want to model, new subscribers added each month, and the projection horizon. The simulator projects the subscriber base month by month under both rates and compares the two paths.
Each month the base loses its churn percentage and gains the new subscribers you add: subscribers next month = subscribers x (1 - churn) + new subscribers. Monthly revenue is the base multiplied by average revenue per user, summed across the horizon, so the comparison shows both the end-of-period revenue gap and the cumulative revenue gap. At the defaults — 1,000 subscribers, $49 average revenue, 80 new subscribers a month over 12 months — the 6% path ends at about 1,175 subscribers and the 4% path at about 1,387.
Churn compounds, which is why small differences dominate over time. At 6% monthly churn the average customer stays about 17 months; at 4%, 25 months; at 3%, 33 months. Lifetime value is monthly profit per customer divided by churn, so every point of churn moves lifetime value by double-digit percentages.
Read the 12-month revenue gap, not the first month. One point of churn is worth a few hundred dollars of monthly revenue in month one of the example — noticeable but not dramatic. The gap widens every month because retained customers are retained again the next month, and the cumulative figure is where the real money sits.
Separate voluntary churn (customers who cancel — fix with product and value) from involuntary churn (failed payments — fix with dunning, card updaters and retry logic). Involuntary churn is typically 20 to 40% of the total in subscription businesses and is usually cheaper to reduce than voluntary churn, which makes payment recovery the highest-return churn work for most businesses. Start there: it needs no product change and no price change, only retry logic and expiry emails.
The formula
Subscribers next month = subscribers x (1 - churn) + new subscribers. Customer lifetime (months) = 1 / monthly churn rate. LTV = monthly profit per customer / churn rate.
Worked example — try it on the calculator above
Worked example: 12 months at 6% versus 4% churn
Start: 1,000 subscribers, $49 a month, adding 80 new subscribers a month. At 6% churn the base after 12 months is about 1,175 subscribers and monthly revenue about $57,560. At 4% churn the base reaches about 1,387 and monthly revenue about $67,977. The two points of churn are worth $10,417 a month by month 12 — about $60,236 of cumulative revenue across the year — with no change to acquisition spend. Lifetime value tells the same story from the customer's side: at $49 a month, a customer at 6% churn is worth $49 / 0.06 = $817 over their lifetime, while at 4% churn the same customer is worth $49 / 0.04 = $1,225 — a 50% increase from two points of churn.
Frequently Asked Questions
What is a good monthly churn rate for subscriptions?
Consumer subscription products commonly run 5 to 10% monthly churn; established services with strong fit get below 5%. B2B software runs lower: 3 to 7% annually for enterprise accounts, while 5 to 7% monthly for small-business tools is considered poor but common. Judge your rate against your segment and price point — a $10 entertainment app and a $200 business tool should not share a target.
How much of churn is failed payments?
Typically 20 to 40%. Cards expire, get replaced or hit limits, and a subscription with no retry process loses those customers silently. Card-account updater services, smart retries spread over days, and pre-expiry emails recover a large share — recovery rates of 30 to 50% of failed payments are achievable, making dunning the highest-return churn work for most businesses.
Why does churn matter more than growth at scale?
Growth adds a fixed number of customers; churn removes a percentage of a growing base. At 10,000 subscribers and 6% churn you must add 600 customers a month to stand still — four times the acquisition needed at 2,000 subscribers. Businesses that ignore churn eventually spend all their growth budget refilling the bucket.
Does lowering price reduce churn enough to pay?
Rarely, on its own. A 10% price cut needs churn to fall enough that lifetime value rises by more than 10% — from 5% to under 4.5% — just to keep lifetime value flat, before counting the revenue lost on every remaining customer. Price is a weak churn lever compared with onboarding, usage and payment recovery; test it only after those are working.
Estimates, not advice. This calculator provides educational estimates based on the inputs you enter and the assumptions shown on this page. It is not financial, tax or investment advice, and it cannot see your full situation. Verify important figures against official sources, and consider a qualified professional for decisions about your own money. See our Disclaimer and Methodology.