Churn Rate

Also known as: Customer churn, Attrition rate, Customer attrition

What is churn rate?

Churn rate is the percentage of customers, subscribers, or active users who leave a product within a given time window. The window is usually monthly or annual. The leaver definition depends on the business: a canceled subscription, a non-renewed contract, or a mobile user who stops opening the app for 30 days.

Churn is the inverse of retention rate. If 100 customers start the month and 95 are still paying at the end, customer churn is 5 percent and retention is 95 percent.

Two flavors matter:

• Customer churn. Count of accounts lost.
• Revenue churn. Dollars lost. Weighted by plan size.

A business can have low customer churn and high revenue churn at the same time. That happens when small accounts stay and big accounts leave. Always track both.

How to calculate churn rate

The formula is simple. The inputs are where teams get sloppy.

Customer churn formula

Customer churn rate = (customers lost in period / customers at start of period) x 100

Worked example. A SaaS starts April with 1,200 paying accounts. During April, 36 accounts cancel. Customer churn for April:

36 / 1,200 = 0.03 = 3.0% monthly customer churn

New signups inside the period are excluded from the denominator on purpose. You only measure churn against the base that started the period. Mixing in new signups masks the leak.

Revenue churn formula

Gross revenue churn measures lost MRR before any expansion is added back.

Gross revenue churn = (MRR lost from cancellations + downgrades) / MRR at start of period x 100

Net revenue churn nets out expansion revenue (upgrades, seat additions, add-ons) from the same cohort.

Net revenue churn = (MRR lost - expansion MRR) / MRR at start of period x 100

The strongest SaaS companies hit negative net revenue churn. Existing customers expand faster than others leave. Per Gainsight's customer success benchmarks, top-quartile B2B SaaS reports net revenue retention above 120 percent, the inverse of net revenue churn below minus 20 percent.

What's a "good" churn rate?

Benchmarks shift by segment, contract length, and price point. Use these as a sanity check, not gospel.

Segment	Typical monthly customer churn	Typical annual customer churn
Enterprise SaaS (annual contracts)	0.5% or less	5 to 7%
Mid-market B2B SaaS	1 to 2%	12 to 20%
SMB B2B SaaS	3 to 5%	30 to 50%
Consumer subscription (streaming, news)	5 to 7%	varies
Mobile app subscriptions	8 to 12% (first 90 days)	high

Source: Recurly Research SaaS subscription benchmarks and ProfitWell's churn benchmarks. Numbers reflect 2023-2024 reporting cohorts.

A few rules of thumb:

• Annual contracts always show lower monthly churn than monthly contracts. Don't compare them directly.
• Self-serve SMB tools churn faster than sales-led enterprise tools. Always.
• Free trial conversion churn (people who never pay) is a different metric. Don't blend it with paid churn.

Why churn matters more than acquisition

Acquisition gets the headlines. Churn decides whether the business compounds.

The classic Bain & Company loyalty research found that a 5 percent increase in customer retention can lift profits by 25 to 95 percent, depending on industry (Bain & Company). Harvard Business Review extended that finding across decades of follow-up work. The math is unforgiving: every dollar kept is worth more than a dollar acquired, because the kept dollar already cleared its CAC.

Three concrete consequences for performance marketing:

1. Churn caps your max CAC. LTV is roughly ARPU divided by churn. At 5 percent monthly churn, average customer life is 20 months. At 2.5 percent, it's 40 months. Same ARPU, double the LTV, double the customer acquisition cost you can afford on a paid click.
2. Churn distorts ROAS reporting. A 30-day ROAS that looks great can collapse at month 3 if churn is high. Always model payback against actual cohort retention.
3. Churn compounds in both directions. Negative net revenue churn means existing customers fund new growth. Positive churn means you have to outrun the leak with paid spend forever.

How to reduce churn

Reducing churn isn't one tactic. It's a stack.

Onboarding fixes

The first 7 to 14 days predict everything. Per Mixpanel's product benchmarks report, users who hit a key activation event in week one retain at 2 to 3x the rate of users who don't. Map your activation event. Instrument it. Optimize the path to it.

Pricing and packaging

Annual plans churn 30 to 50 percent less than monthly plans. Offer them. Discount them. Default to them at checkout where it makes sense.

Win-back campaigns

Lapsed users are the cheapest audience you'll ever target. They already know the product. Build a retargeting audience of canceled accounts and inactive users from the last 30 to 90 days. Run a win-back creative. Test discount offers, feature announcements, and use-case angles.

Failed-payment recovery

Involuntary churn (failed cards, expired cards) accounts for 20 to 40 percent of total churn for most subscription businesses, per Recurly's analysis. Dunning emails, smart card retries, and account updaters recover most of it. This is the highest-ROI churn fix and the most often ignored.

Real-world example with numbers

A B2B SaaS sells a $99 per month plan. April snapshot:

• Starting paying customers: 2,000
• Starting MRR: $198,000
• Cancellations during April: 80 accounts
• Downgrades to a $49 plan: 20 accounts ($1,000 MRR lost)
• Upgrades to a $199 plan: 30 accounts ($3,000 MRR added)
• New signups in April: 150 (excluded from churn math)

Customer churn:

80 / 2,000 = 4.0% monthly customer churn

Gross revenue churn:

($7,920 from cancellations + $1,000 from downgrades) / $198,000 = 4.5%

Net revenue churn:

($8,920 - $3,000 expansion) / $198,000 = 3.0%

LTV at this churn rate:

LTV = $99 / 0.04 = $2,475

Cut monthly churn to 2 percent and LTV jumps to $4,950. Same product. Same ARPU. The CAC budget on every paid channel can roughly double without hurting payback.

Churn signal in performance marketing

Most ad accounts treat churn as a finance problem. Performance teams who treat it as a media-buying signal pull ahead.

Three places churn data feeds the ad stack:

• CAC ceilings. Bid caps and target CPAs should derive from cohort LTV, which derives from churn. Update them every quarter as churn shifts.
• Audience seeds. Lapsed-customer lists become win-back retargeting audiences and exclusion lists for prospecting campaigns. Hand them to Meta, Google, and TikTok via server-to-server tracking to bypass browser-tracking decay.
• Creative angles. The cancellation reasons your support team logs are gold. The top three reasons (price, missing feature, low usage) become three different ad-creative angles for both win-back and prospecting.

In a connected platform like Coinis, lapsed-user audiences and churn-segment exports plug straight into ad creative generation and audience definition. The churn data stops sitting in a finance dashboard. It starts buying media.

Related terms

• Retention Rate
• Ltv
• Customer Acquisition Cost
• Monthly Recurring Revenue
• Cohort Analysis
• Retargeting

Frequently asked questions

What is a good monthly churn rate for SaaS?

For B2B SaaS, healthy monthly customer churn sits around 1 percent or less. SMB-focused tools often run 3 to 5 percent. Per Recurly's 2024 SaaS benchmarks, the median across reporting subscription businesses is closer to 4.8 percent. Anything north of 7 percent monthly is a leak.

What is the difference between customer churn and revenue churn?

Customer churn counts accounts. Revenue churn counts dollars. A SaaS can lose 10 small accounts but keep all enterprise plans. Customer churn looks bad. Revenue churn looks fine. Always track both. Net revenue churn also factors in expansion revenue from existing accounts.

How does churn relate to LTV?

LTV is roughly ARPU divided by churn rate. Cut monthly churn from 5 percent to 2.5 percent and you double customer lifetime value. That single move changes how much you can pay for a click, a lead, or a retargeted impression. Churn is the input that decides what CAC you can afford.

Is app uninstall churn the same as subscription churn?

No. Subscription churn is a billing event. App churn is a usage event. A user can stop opening the app for 30 days but keep paying. Most mobile teams define churn as 30-day inactivity, not cancellation. Both metrics matter. They tell you different things about retention.

How do you reduce churn with paid media?

Retargeting lapsed users beats acquiring cold ones. Build audiences from users who canceled, downgraded, or went inactive in the last 30 to 90 days. Run win-back creatives with specific offers. Per Bain & Co's classic loyalty research, a 5 percent retention lift can raise profits 25 to 95 percent.