See what failed payments and churn cost you in a year.
Free calculator: put in your MRR, churn and failed-payment rate, and see how much revenue leaks out of your SaaS every year.
Leaking over 12 months
$28,992
30.2% of a full year of revenue — $79 a day.
- Customers who leave
- $24,960
- Declines never recovered
- $4,032
Assumes a flat baseline: no new customers, no expansion. Churned revenue is counted for every month it stays missing, which is why it grows faster than the failed-payment line.
No account, no email — the maths runs in your browser.
- 01
Put in four numbers
MRR, monthly churn, the share of charges that fail, and how many of those you recover.
- 02
See the twelve-month cost
Churn is counted for every month it stays missing, so the figure is the real one, not one month's loss.
- 03
Fix the cheaper leak first
Failed payments are already-won revenue. They are almost always the faster half to recover.
About Leakmeter
Two leaks drain a subscription business, and founders fix them in different places. Involuntary churn is a card that declines and is never retried — that revenue was already won, it just never arrives. Voluntary churn is a customer who leaves, and it compounds: someone lost in January is missing for the other eleven months too.
Leakmeter counts both against a flat baseline — no new customers, no expansion — because that answers the only question worth asking: what does the current rate cost me over the next twelve months if nothing changes?
Questions
- Why is the churn number so much larger than the failed-payment number?
- Because churned revenue keeps costing you. A customer lost in month one is missing for twelve months, month two for eleven, and so on. Declines are counted once each, in the month they happen.
- What counts as a good monthly churn rate?
- For self-serve B2B SaaS, under 3% monthly is healthy and over 5% is usually the reason growth feels flat no matter how much traffic you add.
- Do you store what I type?
- No. The whole calculation runs in your browser. There is no request, no account and no email field.
Leakmeter answers one question. Seiton answers the rest every morning.
Connect Stripe, analytics, Search Console and Sentry read-only. Seiton tells you what changed overnight, how much money is at risk, and what deserves attention today.
Get my first briefing14-day free trial. No credit card.