Churn rate is the percentage of customers - or revenue - that your business loses over a given period. It's one of the most consequential metrics in a subscription business because of how it compounds: a churn rate that looks small on paper can quietly erode your entire customer base over 12–18 months.
Getting churn under control is often the difference between a SaaS business that grows and one that runs in place no matter how much it spends on acquisition.
What Is Churn Rate?
Churn rate measures how much of your business you're losing. There are two types:
Customer churn rate - the percentage of customers who cancel in a given period.
Revenue churn rate (also called MRR churn) - the percentage of MRR lost from cancellations and downgrades.
Both matter, but they tell different stories. A high customer churn rate among low-paying customers might not hurt revenue much, while losing a handful of enterprise accounts could significantly impact MRR. Tracking both gives you the full picture.
🧒 Explained simply You have 10 friends who promised to buy your lemonade every week. But each month, one friend moves away or decides they don't want lemonade anymore. That's churn. If you keep losing 1 friend a month and only make 1 new friend, your stand stays the same size forever. Lose more than you gain and your stand quietly shrinks - even if you're working just as hard as before.
How to Calculate Churn Rate
Customer Churn Rate
Customer Churn Rate = (Customers Lost in Period ÷ Customers at Start of Period) × 100
Example: You start the month with 500 customers and lose 15.
15 ÷ 500 × 100 = 3% monthly customer churn
Revenue Churn Rate (Gross MRR Churn)
Gross MRR Churn Rate = (MRR Lost to Cancellations + Contractions) ÷ MRR at Start of Period × 100
Example: You start the month with $50,000 MRR and lose $1,500 to cancellations and $500 to downgrades.
($1,500 + $500) ÷ $50,000 × 100 = 4% gross MRR churn
Net MRR Churn Rate
Net MRR churn subtracts expansion revenue from gross churn:
Net MRR Churn Rate = (MRR Lost − Expansion MRR) ÷ MRR at Start of Period × 100
If that same $2,000 gross churn is offset by $2,500 in expansion MRR from existing customers, your net MRR churn is negative - meaning your existing customer base is actually growing. This is the goal.
How Churn Compounds
The insidious thing about churn is how it compounds against you over time. Consider two businesses:
| Business A | Business B | |
|---|---|---|
| Starting customers | 1,000 | 1,000 |
| Monthly churn | 2% | 5% |
| Customers after 12 months | ~785 | ~540 |
| Customers after 24 months | ~617 | ~292 |
Business B loses nearly 70% of its customer base in two years at 5% monthly churn - even if it acquires no net new customers. At that rate, it must replace 60% of its base every year just to stay flat.
This is why churn is sometimes called the "leaky bucket" problem. Pouring more acquisition spend into a leaky bucket doesn't fix the leak - it just delays the consequences.
Why Churn Rate Matters
It determines how much you can grow. Your sustainable growth rate is roughly the gap between your new customer acquisition rate and your churn rate. If you acquire 8% of your base as new customers each month and churn 5%, your net growth is 3%. Halving churn doubles your effective growth.
It drives LTV. Customer Lifetime Value is directly tied to how long customers stay. Lower churn means longer lifetimes, higher LTV, and more room to invest in acquisition. At 5% monthly churn, the average customer stays about 20 months. At 2%, they stay about 50 months - more than double the lifetime value.
It signals product-market fit. High churn is often a product signal, not just a sales or marketing one. When customers leave quickly, they're telling you that the product didn't deliver on its promise, the onboarding failed, or the wrong customers were acquired in the first place.
It affects valuation. Investors pay close attention to churn because it predicts how much of the ARR base will survive over the holding period. High churn compresses valuation multiples significantly.
Good vs Bad Churn Rates
Churn benchmarks vary by segment:
| Segment | Acceptable Monthly Churn |
|---|---|
| SMB-focused SaaS | 3–5% |
| Mid-market SaaS | 1–2% |
| Enterprise SaaS | 0.5–1% |
| Consumer subscriptions | 5–7% |
Lower is always better. World-class SaaS businesses often achieve monthly churn below 1%, with net negative churn (where expansion exceeds gross churn) as the gold standard.
How to Reduce Churn
1. Fix onboarding
Most churn happens in the first 30–60 days. Customers who don't reach their "aha moment" - the point where they've experienced genuine value - rarely become long-term subscribers. Mapping and improving the onboarding journey is often the highest-ROI churn reduction activity.
2. Identify at-risk customers early
Usage drop-offs, login frequency declines, and unresponsive customers are leading indicators of churn. Building an early warning system - and intervening with outreach, check-ins, or success resources - catches customers before they decide to leave.
3. Talk to churned customers
Exit surveys and cancellation interviews reveal the real reasons customers leave. These are often different from what you expect. Understanding root causes is the prerequisite to fixing them.
4. Improve the product for your best customers
Churn often concentrates in specific customer segments. If SMB customers churn at 8% while enterprise customers churn at 1%, the problem may be that your product isn't a good fit for the SMB segment - not that your overall product has a problem.
5. Switch high-risk customers to annual plans
Annual subscribers churn at a fraction of the rate of monthly subscribers. The commitment creates a natural retention period, and customers who pay annually tend to invest more in getting value from the product.
6. Offer proactive intervention
Proactive outreach when a customer is struggling - before they submit a cancellation request - dramatically improves retention rates. This can be triggered by product usage signals, support ticket volume, or NPS scores.
How to Track Churn
Chartsy calculates customer churn rate and MRR churn rate from your Stripe or Paddle data automatically. You can ask:
- "What is my monthly churn rate for the last 6 months?"
- "Show churned MRR by month"
- "Which plans have the highest churn rate?"
- "What is my net MRR churn this quarter?"
Connect Stripe and track your churn rate →
Frequently Asked Questions About Churn Rate
What is a good churn rate for a SaaS business? It depends on your customer segment. For SMB-focused SaaS, 3–5% monthly churn is typical. For mid-market SaaS, 1–2% is the target. Enterprise SaaS should aim for below 1% monthly. In practice, world-class SaaS businesses achieve net negative churn - where expansion revenue exceeds all churn combined.
What is the difference between customer churn and revenue churn? Customer churn measures the percentage of customers who cancel. Revenue churn (MRR churn) measures the percentage of revenue lost. They can diverge significantly - losing a handful of high-paying enterprise customers produces high revenue churn with low customer churn, while many small cancellations do the opposite.
What causes high churn rate in SaaS? A common mistake is blaming product quality when the real cause is poor customer fit. High churn usually traces back to one of three things: customers didn't experience value during onboarding, the product doesn't match the use case they were sold on, or support failed to intervene before a struggling customer decided to leave.
How do I reduce churn rate quickly? The fastest lever is identifying customers showing early warning signs - login drop-offs, declining usage, unresolved support tickets - and proactively reaching out before they decide to cancel. In practice, most churn decisions are made weeks before the cancellation button is clicked. Early intervention is far more effective than win-back campaigns.
Does annual billing reduce churn? Yes, significantly. Annual subscribers churn at a fraction of the rate of monthly subscribers - typically 3–5x lower. The annual commitment extends the retention window, and customers who pay upfront invest more in extracting value from the product. Offering incentives like a discount or locked-in pricing for annual plans is one of the most reliable churn reduction tactics available.
Related: What Is MRR? · What Is Net Revenue Retention (NRR)? · What Is LTV?
Written by
Chartsy TeamThe Chartsy Team writes guides, product updates, and resources to help SaaS and eCommerce founders make sense of their metrics, without SQL or spreadsheets.
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