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Churn Rate Calculator

Calculate your customer churn rate and revenue churn rate instantly. Understand the true cost of churn on your SaaS business.

Customer Churn Rate
Net Revenue Churn Rate
Results

Customer Churn Rate

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Net Revenue Churn Rate

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Turn churn math into an agent action plan

ChurnWin reads Stripe churn data, groups feedback into MRR-weighted themes, and gives your AI agent the context to recommend what to fix next.

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Understanding Churn Rate

What is churn rate?

Churn rate (also called attrition rate) is the percentage of customers who stop using your product during a given time period. For SaaS businesses, it's one of the most critical metrics because it directly impacts revenue growth and company valuation.

How to calculate customer churn rate

The formula is simple:

Churn Rate = (Customers Lost ÷ Customers at Start) × 100

For example, if you started the month with 500 customers and 20 cancelled, your monthly churn rate is (20 ÷ 500) × 100 = 4.0%.

What is net revenue churn?

Net revenue churn accounts for expansion revenue (upgrades) alongside lost revenue from cancellations. It's possible to have negative net revenue churn, which means your existing customers are generating more revenue through upgrades than you're losing to cancellations. This is the holy grail for SaaS businesses.

Net Revenue Churn = ((Lost MRR − Expansion MRR) ÷ Starting MRR) × 100

What is a good churn rate for SaaS?

Benchmarks vary by market and business model, but general guidelines for monthly churn:

  • Below 2% — Excellent. Best-in-class for B2B SaaS.
  • 2–5% — Good. Healthy for most SaaS businesses.
  • 5–8% — Average. Room for improvement.
  • Above 8% — High. Churn is likely the biggest drag on growth.

B2C SaaS typically has higher churn (5–7% monthly), while B2B enterprise SaaS often achieves below 1% monthly churn.

How to reduce churn

  1. Understand why customers leave — Collect feedback from churned customers automatically.
  2. Identify repeated churn themes early — Use cancellation feedback to spot product gaps before they keep costing MRR.
  3. Act on the data — Turn churn reasons into agent-readable product tasks, retention experiments, and roadmap decisions.
  4. Monitor continuously — Track churn rate trends over time, not just point-in-time snapshots.

ChurnWin automates all of this — connect Stripe, collect cancellation feedback, and turn churn reasons into an agent-readable product improvement loop.