Gross Churn Rate

Gross churn rate is the percentage of beginning-period MRR lost to cancellations and downgrades, before any expansion revenue is factored in. It represents the raw cost of retention failure — the floor through which revenue leaks regardless of how hard your success and sales teams work to upsell.

formula.sh

Gross Churn Rate = (MRR Churned + MRR Downgraded) / Beginning MRR × 100

> MRR Churned — revenue from fully cancelled accounts
> MRR Downgraded — revenue reduction from accounts that reduced their plan tier
> Beginning MRR — total MRR at the start of the measurement period
> Does NOT subtract expansion, upsells, or new customer MRR

example

example.sh

Starting MRR of $200,000. Lost $8,000 to cancellations, $2,000 to plan downgrades. Gained $15,000 in expansions.

($8,000 + $2,000) / $200,000 × 100

→ 5% gross churn. Net churn would be -2.5% due to expansion, but the underlying 5% leak still exists.

why it matters

Gross churn is what you cannot hide. A company with a high net revenue retention number can still be hemorrhaging customers if expansion is papering over a terrible underlying retention story. Gross churn exposes that truth.

VCs performing due diligence will always decompose NRR into gross churn and expansion rate. A 120% NRR built on 20% gross churn and 40% expansion is a fundamentally less healthy business than a 115% NRR built on 5% gross churn and 20% expansion — because the first company is dependent on a constant upsell motion just to stay alive.

World-class gross churn for enterprise B2B SaaS is under 5% annually. For SMB SaaS, under 15% annually is considered strong. Anything above 25% annually indicates a product-market fit problem that no upsell motion will fix.

common mistakes

✗Celebrating a strong NRR without examining what gross churn is underneath it — expansion can be a beautiful mask on a decaying retention base.

✗Including new customer MRR in the gross churn denominator, which understates the severity of the churn rate.

✗Treating all gross churn as equal — a spike in downgrade churn calls for different action than a spike in cancellation churn.

pro tips

✓Report gross churn alongside NRR in every board deck — never present only the net number.

✓Build a gross churn waterfall that shows cancellations and downgrades by customer segment and tenure.

✓Set a gross churn budget: if gross churn exceeds X%, trigger an automatic customer health review cycle.

the mrrsucks take

A beautiful NRR built on top of disgusting gross churn is a Ponzi scheme in slow motion. Eventually the upsell well runs dry and you're left with the churn you were hiding all along.

faq

What is the difference between gross churn and net churn?+

Gross churn counts only revenue lost. Net churn subtracts expansion revenue — upgrades, seat additions, cross-sells — from the same cohort. Net churn can be negative (meaning expansion more than offsets losses), while gross churn is always zero or positive.

Can gross churn ever be zero?+

Theoretically yes, but practically never above a trivial scale. Some multi-year enterprise contracts lock in zero gross churn for their duration, but once the renewal cycle hits, churn reappears. World-class companies minimize it; none eliminate it.

The churn spiral›

related metrics

./install-the-daemon

$9. 365 roasts. one public endpoint of pure shame.