SaaS Churn Rate & NRR Benchmarks (2026)

Q: What is a good Net Revenue Retention (NRR) benchmark for SaaS?

For enterprise B2B SaaS ($25k+ ACV), top-quartile NRR benchmarks at 120% to 130%+. For mid-market SaaS ($5k–$25k ACV), healthy NRR ranges between 105% and 115%. For SMB self-serve SaaS (<$1k ACV), an NRR between 90% and 100% is typical.

Q: How do you calculate customer half-life in SaaS?

Customer half-life is calculated using the natural logarithm: Half-Life = ln(0.5) / ln(1 - Monthly Logo Churn Rate). At 2.5% monthly churn, half of the customer cohort will churn after approximately 27.4 months.

Q: Can Gross Revenue Retention (GRR) ever exceed 100%?

No. Gross Revenue Retention (GRR) measures only retained revenue from existing contracts and deliberately excludes all upsells and expansion. Therefore, GRR is mathematically capped at 100%.

1. The Three SaaS Retention Metrics Evaluating the health of a recurring subscription software model requires tracking three interdependent retention dimensions:

1Logo / Customer Churn %: The raw percentage of customer accounts that cancel during the measurement period.
2Gross MRR Churn %: The percentage of recurring dollars lost to cancellations and contraction, ignoring all expansion.
3Net Revenue Retention (NRR %): The net change in recurring dollars from an existing customer cohort, incorporating upsells and cross-sells.

Understanding the difference between account retention and revenue retention is essential: a business can suffer 5% monthly logo churn while simultaneously reporting 115% NRR if enterprise expansion outpaces lost SMB accounts.

2. Gross MRR Churn vs. Net MRR Churn Formulas

Gross MRR Churn Formula: $$\mathbf{\text{Gross MRR Churn \%}} = \frac{\text{Churned MRR (Cancellations)} + \text{Contraction MRR (Downgrades)}}{\text{Starting MRR}} \times 100$$

Gross churn isolates pure revenue attrition. Top-quartile enterprise software targets gross churn under 0.5% to 0.8% per month (under 6% to 10% annually).

Net MRR Churn Formula: $$\mathbf{\text{Net MRR Churn \%}} = \frac{(\text{Churned MRR} + \text{Contraction MRR}) - \text{Expansion MRR}}{\text{Starting MRR}} \times 100$$

When Expansion MRR exceeds total lost revenue, Net MRR Churn becomes negative, indicating organic cohort growth.

3. Net Revenue Retention (NRR / NDR) Mechanics Net Revenue Retention (NRR), also known as Net Dollar Retention (NDR), measures the percentage of recurring revenue retained from an existing cohort over a specific time horizon (typically trailing 12 months):

NRR = (Starting MRR - Churned MRR - Contraction MRR + Expansion MRR) / (Starting MRR) × 100

NRR = 100% - Net MRR Churn %

Example: A SaaS company starts the year with $1,000,000 in ARR: - Lost to cancellations: $60,000 - Lost to downgrades: $20,000 - Gained from expansion & upsells: $200,000

Cohort Retained ARR = $1,000,000 - $60,000 - $20,000 + $200,000 = $1,120,000

NRR = ($1,120,000) / ($1,000,000) × 100 = 112.0%

4. Negative Net Churn: The Compounding Growth Engine Negative net churn represents the single most powerful economic flywheel in software.

Consider two SaaS companies, both adding $20,000 in new ARR each month: - Company A (Positive Net Churn, NRR = 85%): Loses $15,000/month net from existing cohorts. Net monthly ARR growth is only $5,000. - Company B (Negative Net Churn, NRR = 120%): Gains $20,000/month from expansion above churn. Net monthly ARR growth is $40,000.

Over a 5-year operating horizon, Company B achieves a valuation more than 8x higher than Company A on identical customer acquisition spend.

5. Cohort Decay & Customer Half-Life Equations Under continuous geometric compounding, customer cohorts decay exponentially. To determine Customer Half-Life (the time in months required for exactly 50% of starting accounts to churn):

Customer Half-Life (Months) = (\ln(0.5)) / (\ln(1 - c))

Where $c$ is the monthly logo churn decimal (e.g. 0.03 for 3%).

Monthly Logo Churn	Annualized Churn Rate	Customer Lifespan	Customer Half-Life
1.0% / month	11.4% / year	100.0 Months (8.3 yrs)	69.0 Months (5.8 yrs)
2.0% / month	21.7% / year	50.0 Months (4.2 yrs)	34.3 Months (2.9 yrs)
3.0% / month	30.6% / year	33.3 Months (2.8 yrs)	22.8 Months (1.9 yrs)
5.0% / month	46.0% / year	20.0 Months (1.7 yrs)	13.5 Months (1.1 yrs)

6. Institutional SaaS Retention Benchmarks

Market Segment	Target Customer Size (ACV)	Gross Revenue Retention (GRR)	Net Revenue Retention (NRR)
Enterprise SaaS	> $50,000 / year	90% to 95%+	120% to 135%+
Mid-Market SaaS	$10,000 – $50,000 / year	85% to 90%	105% to 120%
SMB B2B SaaS	$1,000 – $10,000 / year	75% to 85%	95% to 105%
Self-Serve Prosumer	< $1,000 / year	65% to 75%	85% to 95%

Frequently Asked Questions

What is a good Net Revenue Retention (NRR) benchmark for SaaS?

For enterprise B2B SaaS ($25k+ ACV), top-quartile NRR benchmarks at 120% to 130%+. For mid-market SaaS ($5k–$25k ACV), healthy NRR ranges between 105% and 115%. For SMB self-serve SaaS (<$1k ACV), an NRR between 90% and 100% is typical.

How do you calculate customer half-life in SaaS?

Customer half-life is calculated using the natural logarithm: Half-Life = ln(0.5) / ln(1 - Monthly Logo Churn Rate). At 2.5% monthly churn, half of the customer cohort will churn after approximately 27.4 months.

Can Gross Revenue Retention (GRR) ever exceed 100%?

No. Gross Revenue Retention (GRR) measures only retained revenue from existing contracts and deliberately excludes all upsells and expansion. Therefore, GRR is mathematically capped at 100%.

SaaS Churn Rate & NRR Benchmarks: Formulas, Retention Curves & Cohort Math

Model Your SaaS Churn Rate & Net Revenue Retention

1. The Three SaaS Retention Metrics Evaluating the health of a recurring subscription software model requires tracking three interdependent retention dimensions:

2. Gross MRR Churn vs. Net MRR Churn Formulas

Gross MRR Churn Formula: $$\mathbf{\text{Gross MRR Churn \%}} = \frac{\text{Churned MRR (Cancellations)} + \text{Contraction MRR (Downgrades)}}{\text{Starting MRR}} \times 100$$

Net MRR Churn Formula: $$\mathbf{\text{Net MRR Churn \%}} = \frac{(\text{Churned MRR} + \text{Contraction MRR}) - \text{Expansion MRR}}{\text{Starting MRR}} \times 100$$

3. Net Revenue Retention (NRR / NDR) Mechanics Net Revenue Retention (NRR), also known as Net Dollar Retention (NDR), measures the percentage of recurring revenue retained from an existing cohort over a specific time horizon (typically trailing 12 months):

Example: A SaaS company starts the year with $1,000,000 in ARR: - Lost to cancellations: $60,000 - Lost to downgrades: $20,000 - Gained from expansion & upsells: $200,000

4. Negative Net Churn: The Compounding Growth Engine Negative net churn represents the single most powerful economic flywheel in software.

5. Cohort Decay & Customer Half-Life Equations Under continuous geometric compounding, customer cohorts decay exponentially. To determine Customer Half-Life (the time in months required for exactly 50% of starting accounts to churn):

6. Institutional SaaS Retention Benchmarks

Frequently Asked Questions

Ready to Model Your Numbers?

SaaS Churn Rate & NRR Benchmarks: Formulas, Retention Curves & Cohort Math

Model Your SaaS Churn Rate & Net Revenue Retention

1. The Three SaaS Retention Metrics Evaluating the health of a recurring subscription software model requires tracking three interdependent retention dimensions:

2. Gross MRR Churn vs. Net MRR Churn Formulas

Gross MRR Churn Formula: $$\mathbf{\text{Gross MRR Churn \%}} = \frac{\text{Churned MRR (Cancellations)} + \text{Contraction MRR (Downgrades)}}{\text{Starting MRR}} \times 100$$

Net MRR Churn Formula: $$\mathbf{\text{Net MRR Churn \%}} = \frac{(\text{Churned MRR} + \text{Contraction MRR}) - \text{Expansion MRR}}{\text{Starting MRR}} \times 100$$

3. Net Revenue Retention (NRR / NDR) Mechanics **Net Revenue Retention (NRR)**, also known as Net Dollar Retention (NDR), measures the percentage of recurring revenue retained from an existing cohort over a specific time horizon (typically trailing 12 months):

Example: A SaaS company starts the year with **$1,000,000 in ARR**: - Lost to cancellations: $60,000 - Lost to downgrades: $20,000 - Gained from expansion & upsells: $200,000

4. Negative Net Churn: The Compounding Growth Engine Negative net churn represents the single most powerful economic flywheel in software.

5. Cohort Decay & Customer Half-Life Equations Under continuous geometric compounding, customer cohorts decay exponentially. To determine **Customer Half-Life** (the time in months required for exactly 50% of starting accounts to churn):

6. Institutional SaaS Retention Benchmarks

Frequently Asked Questions

Ready to Model Your Numbers?

3. Net Revenue Retention (NRR / NDR) Mechanics Net Revenue Retention (NRR), also known as Net Dollar Retention (NDR), measures the percentage of recurring revenue retained from an existing cohort over a specific time horizon (typically trailing 12 months):

Example: A SaaS company starts the year with $1,000,000 in ARR: - Lost to cancellations: $60,000 - Lost to downgrades: $20,000 - Gained from expansion & upsells: $200,000

5. Cohort Decay & Customer Half-Life Equations Under continuous geometric compounding, customer cohorts decay exponentially. To determine Customer Half-Life (the time in months required for exactly 50% of starting accounts to churn):