How to measure Net Revenue Retention

How much revenue a cohort of existing customers generates compared to where they started — including expansion, contraction, and churn.

NRR = (Starting MRR + Expansion − Contraction − Churned MRR) ÷ Starting MRR × 100

Why it matters: Above 100% means existing customers grow faster than they leave (Skok's 'negative churn'). The single strongest predictor of long-term growth efficiency.

8 tools that produce NRR

Side-by-side: how each tool produces this number, what to read before adopting, and where to find the official docs. Saasly does not integrate with these tools — this is a reference so you can pick the right one for your stack.

ToolCategoryHow it produces NRRPricing
StripeBilling platformComputed (SQL / export)Pay-as-you-go (2.
PaddleBilling platformAutomatic5% + $0.
ChargebeeBilling platformAutomaticFree up to $250K ARR; from $599/mo (Performance) for established SaaS.
RevenueCatMobile subscriptionComputed (SQL / export)Free up to $2.
ChartMogulSaaS analyticsAutomaticFree up to $10K MRR; then from $129/mo (Launch) to $799+/mo (Volume).
BaremetricsSaaS analyticsAutomaticFrom $129/mo (Metrics) to $429+/mo (Business) — seat and MRR limits.
ProfitWell (Paddle)SaaS analyticsAutomaticMetrics are free; Retain (failed payment recovery) and Price Intelligently are paid add-ons.
Saasly CalculatorManual calculatorManual entryFree forever, no signup.

Per-tool: what to know before you plug it in

Stripe

Computed (SQL / export)

Billing platform

Subscription billing platform with built-in dashboards and SQL analytics (Sigma).

Before you adopt: Stripe does not surface NRR natively. Compute via Sigma by pulling the same customer cohort's MRR at month 0 vs month N. Include upgrades, downgrades, churn — exclude new customers acquired after the cohort start.
Pricing: Pay-as-you-go (2.9% + $0.30 per charge). Sigma analytics: free up to 1K charges/mo, then $0.02/charge.
Official docs for NRR Stripe home

Paddle

Automatic

Billing platform

Merchant-of-record billing for SaaS; ProfitWell metrics now bundled.

Before you adopt: Available in ProfitWell's analytics tier. The expansion-vs-contraction split is the part to watch — Paddle's per-seat pricing model may overstate expansion if you bill per-seat upgrades.
Pricing: 5% + $0.50 per transaction (Merchant of Record model — Paddle handles VAT/sales tax globally).
Official docs for NRR Paddle home

Chargebee

Automatic

Billing platform

Subscription billing platform with deep enterprise feature set and analytics module.

Before you adopt: Available in the Analytics module. Confirm that expansion includes one-time upsells if you sell add-ons — Chargebee's default NRR only counts subscription-line expansion.
Pricing: Free up to $250K ARR; from $599/mo (Performance) for established SaaS.
Official docs for NRR Chargebee home

RevenueCat

Computed (SQL / export)

Mobile subscription

Cross-platform mobile subscription SDK with analytics for iOS, Android, and web in-app purchases.

Before you adopt: RevenueCat doesn't surface NRR directly — mobile subscriptions rarely have expansion (price tiers exist but tier-jumping is uncommon). For mobile, retention rate is usually the meaningful number, not NRR.
Pricing: Free up to $2.5K MTR; then 1% of tracked revenue.
Official docs for NRR RevenueCat home

ChartMogul

Automatic

SaaS analytics

Subscription analytics platform built for funded SaaS with Stripe/Recurly/Chargebee billing.

Before you adopt: Net MRR Retention view is segmentable by plan, cohort, region. The interpretation rule: NRR > 100% means existing customers more than offset churn — your moat. Watch the 'quarter' vs 'TTM' setting — they're often confused.
Pricing: Free up to $10K MRR; then from $129/mo (Launch) to $799+/mo (Volume).
Official docs for NRR ChartMogul home

Baremetrics

Automatic

SaaS analytics

Stripe-native subscription analytics with cancellation surveys and dunning.

Before you adopt: Available in the Business tier. The 'Open Startups' public dataset is a useful external benchmark — compare your NRR against the median for similar-stage companies that publicly publish their numbers.
Pricing: From $129/mo (Metrics) to $429+/mo (Business) — seat and MRR limits.
Official docs for NRR Baremetrics home

ProfitWell (Paddle)

Automatic

SaaS analytics

Free Stripe-connected subscription metrics, now Paddle-owned.

Before you adopt: Available in the free tier — rare among free SaaS analytics tools. Expansion source data depends on accurate plan-change tracking in Stripe; if you process upgrades outside Stripe (manual invoices, custom contracts), NRR will under-report expansion.
Pricing: Metrics are free; Retain (failed payment recovery) and Price Intelligently are paid add-ons.
Official docs for NRR ProfitWell (Paddle) home

Saasly Calculator

Manual entry

Manual calculator

Manual-entry calculator that computes the core SaaS metrics with Skok-tier classification.

Before you adopt: Enter starting MRR, expansion, contraction, churn — get NRR percentage with Skok-tier interpretation. The benchmark page for NRR shows where your number sits relative to your industry stage.
Pricing: Free forever, no signup.
Official docs for NRR Saasly Calculator home

Already have your numbers? Run the math.

The Saasly Calculator computes NRR (and 15 other SaaS metrics) from manual input — useful when you've pulled the underlying numbers out of one of the tools above and want a quick sanity check with industry benchmark percentiles.

Open the calculator

Other metrics

How to measure Customer Lifetime Value
The total gross profit a single customer is expected to generate over their entire relationship with you.
How to measure Customer Acquisition Cost
The fully-loaded cost of acquiring one paying customer in a given period.
How to measure Monthly Recurring Revenue
The normalized monthly value of every active subscription, regardless of billing period.
How to measure Customer Churn Rate
The percentage of customers who cancel in a given period. Counts logos, not dollars.
How to measure CAC Payback Period
The number of months of gross profit from a customer required to recover the cost of acquiring them.
How to measure SaaS Quick Ratio
The ratio of revenue gained (new + expansion) to revenue lost (churn + contraction) in a period.
How to measure Magic Number
Annualized net-new ARR generated for each dollar of the prior quarter's sales & marketing spend.
How to measure Gross Margin
The percentage of revenue left after the direct cost of delivering the service (hosting, support, payment fees, third-party APIs).
How to measure Trial-to-Paid Conversion
The percentage of users who start a trial and become paying customers.
How to measure Net Promoter Score
A survey-based score from the 0–10 'how likely are you to recommend us?' question, taking promoters (9–10) minus detractors (0–6).
How to measure DAU/MAU Ratio
The share of monthly active users who use the product on a given day — the standard 'stickiness' measure.