ARR Growth vs Revenue Retention Metrics
Compare ARR growth, gross revenue retention, and net revenue retention to understand recurring revenue performance.
ARR growth and retention metrics answer different questions. ARR growth summarizes the total change in recurring revenue, while GRR and NRR isolate performance within the opening customer base.
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About ARR Growth vs Revenue Retention Metrics
ARR growth and retention metrics answer different questions. ARR growth summarizes the total change in recurring revenue, while GRR and NRR isolate performance within the opening customer base.
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Key Factors
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Total company growth vs existing-customer retention
Compare the overall ARR change with metrics that focus only on customers present at the start of the period.
| Factor | Option A: ARR Growth Rate | Option B: Net Revenue Retention | What It Means |
|---|---|---|---|
| Primary question | How much did total ARR change? | How did opening-customer ARR change? | The two measures examine different parts of recurring revenue performance. |
| Includes new customer ARR | Yes | No | New business contributes to total ARR growth but is excluded from NRR. |
| Includes expansion ARR | Yes | Yes | Both metrics reflect expansion, though their denominators differ. |
| Includes contraction and churn | Yes | Yes | Both measures account for revenue losses. |
| Denominator | Beginning ARR | Beginning ARR from the opening customer base | With a consistent opening balance, the difference comes from the treatment of new ARR. |
| Useful for | Viewing the full ARR bridge | Understanding existing-customer value change | Use ARR growth for total scale and NRR for customer-base performance. |
ARR growth can be positive because of new sales even when existing-customer retention is weak. NRR helps separate those two effects.
Gross retention vs net retention
Compare the two retention metrics used to assess the opening customer base.
| Factor | Option A: Gross Revenue Retention | Option B: Net Revenue Retention | What It Means |
|---|---|---|---|
| Expansion ARR | Excluded | Included | GRR shows losses before expansion; NRR shows the effect after expansion. |
| Contraction ARR | Included as a loss | Included as a loss | Both metrics deduct contraction from the opening ARR base. |
| Churned ARR | Included as a loss | Included as a loss | Both metrics deduct lost recurring revenue from cancellations or non-renewals. |
| Can exceed 100% | Normally no when inputs are nonnegative | Yes | Expansion can make NRR exceed the opening ARR balance. |
| Focus | Revenue preserved before expansion | Net revenue change within existing customers | The appropriate metric depends on whether expansion should be part of the view. |
| New customer ARR | Excluded | Excluded | Neither retention metric measures acquisition performance. |
GRR measures the durability of recurring revenue before expansion, whereas NRR measures whether existing-customer expansion offsets their losses.
New customer ARR vs expansion ARR
Compare the two ARR addition categories used in an ARR bridge.
| Factor | Option A: New Customer ARR | Option B: Expansion ARR | What It Means |
|---|---|---|---|
| Source | Customers acquired during the period | Customers in the opening base | The categories are based on customer status at the start of the period. |
| Effect on ending ARR | Increases ending ARR | Increases ending ARR | Both are positive ARR movements in the rollforward. |
| Effect on ARR growth | Included | Included | Both contribute to total net new ARR. |
| Effect on GRR | Excluded | Excluded | GRR considers only contraction and churn from opening ARR. |
| Effect on NRR | Excluded | Included | NRR measures changes from existing customers, so it includes expansion but not acquisition. |
| Typical interpretation | Acquisition contribution | Existing-customer growth contribution | Both are useful when tracked separately in an ARR bridge. |
New customer ARR and expansion ARR both increase ending ARR, but only expansion ARR affects NRR because NRR is limited to the opening customer base.
Key Differences at a Glance
ARR growth includes new customer ARR; GRR and NRR exclude it.
GRR excludes expansion ARR, while NRR includes expansion from existing customers.
Both retention metrics deduct contraction and churn.
Ending ARR is a currency amount, while growth and retention are percentages.
Positive ARR growth does not necessarily mean that NRR is above 100%.
How to Decide
Assumptions
- All metrics use annualized recurring revenue for a consistent reporting period.
- New customer ARR is separate from expansion ARR from the opening customer base.
- Contraction and churn are recorded as positive loss amounts.
- The comparison is educational and does not establish performance targets or accounting treatment.
Related Comparisons
Frequently Asked Questions
Should ARR growth or NRR be used to measure growth?
They answer different questions. ARR growth measures the total change in ARR, while NRR measures the change in ARR from the opening customer base.
Is GRR always lower than NRR?
With nonnegative expansion, contraction, and churn inputs, NRR is equal to or greater than GRR because NRR includes expansion ARR.
Can high NRR coexist with low ARR growth?
Yes. Existing customers may expand while new customer ARR is limited, producing strong NRR but modest total growth.
Can high ARR growth coexist with low NRR?
Yes. Strong new customer ARR can produce total growth even if the opening customer base has significant churn or contraction.
Do new customers affect retention metrics?
No. New customer ARR is excluded from both GRR and NRR in this calculator.
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