# GRR (Gross Revenue Retention)

## Quick Definition

The percentage of recurring revenue retained from existing customers, excluding expansion revenue and only accounting for churn and contraction.

## What is Gross Revenue Retention?

Gross Revenue Retention (GRR) measures how much revenue you keep from existing customers without counting any upsells or expansion. It's capped at 100% and shows the baseline health of your customer relationships.

While NRR can mask churn problems with strong expansion, GRR exposes the raw truth about customer satisfaction. A company with 120% NRR but 70% GRR has a serious retention problem hidden by aggressive upselling.

## Why GRR Matters

GRR reveals the fundamental stickiness of your product. High-performing SaaS companies maintain GRR above 90%. Enterprise software often achieves 95%+ GRR because switching costs are high and contracts are long.

If your GRR is below 80%, you have a product or customer success problem that no amount of expansion can sustainably fix. You're essentially filling a leaky bucket.

## How to Calculate GRR Step by Step

**Step 1: Pick your cohort and time period.** Like NRR, GRR is calculated on a specific group of customers. Choose the customers who were active at the start of the period — say, January 1.

- **Starting MRR from this cohort: $200,000**

**Step 2: Track only the losses.** Unlike NRR, GRR ignores expansion entirely. You're measuring the floor — how much revenue survives without any upsell help.

- Contraction MRR (downgrades): **$8,000**  
- Churned MRR (cancellations): **$14,000**  
- Total losses: **$22,000**

**Step 3: Apply the formula.**

- Retained MRR = $200,000 - $8,000 - $14,000 = $178,000  
- **GRR = $178,000 ÷ $200,000 = 89%**

**Step 4: Compare GRR to NRR.** The gap between them tells a story:

- GRR: 89% → You lose 11% of revenue from existing customers  
- NRR: 108% → Expansion adds 19%, more than covering losses  
- **The gap (19 points) is your expansion engine**

If GRR is low but NRR is high, you're masking a retention problem with upsells. That's fragile — expansion can't compensate forever.

**Step 5: Benchmark by segment.**

- Enterprise SaaS: 95%+ GRR expected (long contracts, high switching costs)  
- Mid-market: 90-95% GRR is healthy  
- SMB: 80-90% GRR is common (higher churn is natural)  
- Below 80% at any segment: Product or pricing issue

**Common mistakes founders make:**

- Including expansion revenue (that's NRR, not GRR)  
- Calculating GRR above 100% (impossible by definition — it's capped at 100%)  
- Not separating contraction from churn in the analysis  
- Using GRR alone without pairing it with NRR for the full picture

## GRR vs NRR

Use GRR to diagnose retention health. Use NRR to measure overall revenue efficiency. A healthy business has both high GRR (above 90%) and high NRR (above 100%).

**Formula**

GRR = (Starting MRR - Contraction MRR - Churned MRR) ÷ Starting MRR × 100

Note: GRR can never exceed 100% since it excludes expansion revenue.

**Example**

Your quarterly metrics:

- Starting MRR: $200,000  
- Downgrades: $10,000  
- Churned customers: $15,000

GRR = ($200K - $10K - $15K) ÷ $200K = 87.5%

You're losing 12.5% of revenue from existing customers each quarter. That's a 50% annual revenue leak that needs immediate attention.