What is Revenue Churn?
Definition
Revenue churn (also called MRR churn or dollar churn) is the percentage of recurring revenue lost from existing customers during a specific period. It accounts for both complete cancellations and downgrades — any reduction in what existing customers pay. Revenue churn is often more informative than customer churn because it weights losses by their dollar impact, revealing whether you're losing big accounts or small ones.
Detailed Explanation
Revenue churn comes in two flavors: gross revenue churn and net revenue churn, and the distinction is crucial.
Gross revenue churn measures only the revenue lost — cancellations plus downgrades — as a percentage of starting MRR. It tells you how much revenue your existing customer base is losing before any expansion revenue is counted. Gross revenue churn is always a positive number (or zero).
Net revenue churn subtracts expansion revenue (upgrades, cross-sells, seat additions) from the losses. Net revenue churn can actually be negative, which is the holy grail of SaaS — it means your existing customers are growing faster than they're churning, so your revenue would grow even without acquiring any new customers. The best SaaS companies achieve negative net revenue churn (also expressed as net revenue retention above 100%).
Revenue churn is more nuanced than customer churn because not all customers are equal. Losing one enterprise customer at $50,000/year has the same revenue impact as losing 500 SMB customers at $100/year, but customer churn would show the latter as far worse. Revenue churn correctly weights these losses by their actual dollar impact on the business.
Why It Matters
Revenue churn is one of the most closely watched metrics by SaaS investors and operators because it directly determines the efficiency of growth. High revenue churn means you need to acquire more new revenue just to stay flat. It's often described as a "leaky bucket" — if churn is high, pouring more customers in the top doesn't help because they're leaking out the bottom. For SaaS companies targeting venture funding or acquisition, gross revenue churn below 2% monthly and negative net revenue churn are often requirements for premium valuations.
How to Calculate
Gross Revenue Churn Rate = (Churned MRR + Contraction MRR) / Starting MRR x 100. Net Revenue Churn Rate = (Churned MRR + Contraction MRR - Expansion MRR) / Starting MRR x 100. Example: Starting MRR = $100,000. Churned MRR = $3,000. Contraction (downgrades) = $1,000. Expansion (upgrades) = $5,000. Gross revenue churn = ($3,000 + $1,000) / $100,000 = 4%. Net revenue churn = ($3,000 + $1,000 - $5,000) / $100,000 = -1% (negative = net expansion).
Practical Example
A SaaS company starts the quarter with $500,000 MRR. They lose $20,000 to cancellations and $5,000 to downgrades, but gain $30,000 from existing customer upgrades. Gross revenue churn: ($20,000 + $5,000) / $500,000 = 5%. Net revenue churn: ($20,000 + $5,000 - $30,000) / $500,000 = -1%. The negative net revenue churn means existing customers grew the business by 1% even before new customer acquisition.
Industry Benchmarks
| Segment | Benchmark |
|---|---|
| Best-in-class SaaS | <1% monthly gross revenue churn |
| Good SaaS | 1-2% monthly gross revenue churn |
| Average SaaS | 2-3% monthly gross revenue churn |
| Needs improvement | >3% monthly gross revenue churn |
| Best-in-class Net Revenue Churn | -3% to -5% monthly (negative = growth) |
Related Terms
Churn Rate
Churn rate (also called customer churn rate or attrition rate) is the percentage of customers who ca...
MRR (Monthly Recurring Revenue)
Monthly Recurring Revenue (MRR) is the total predictable revenue a subscription business earns each ...
NRR (Net Revenue Retention)
Net Revenue Retention (NRR), also called Net Dollar Retention (NDR), measures the percentage of reve...
ARR (Annual Recurring Revenue)
Annual Recurring Revenue (ARR) is the annualized value of a company's recurring subscription revenue...
Involuntary Churn
Involuntary churn (also called passive churn or delinquent churn) occurs when a customer's subscript...
Voluntary Churn
Voluntary churn occurs when a customer makes a deliberate, conscious decision to cancel their subscr...