Analyze customer churn, revenue churn, expansion offset, and revenue at risk for a Series A SaaS company. Use this tool to judge whether retention supports efficient growth and future fundraising.
Lower customer churn and negative net revenue churn indicate stronger retention quality. A Series A company should show that expansion revenue can offset lost revenue and protect future ARR.
This calculator estimates churn health using available revenue inputs. For board reporting, use actual lost MRR, contraction MRR, and expansion MRR by cohort.
If a company starts with 1,000 customers, loses 45, starts with $500,000 MRR, and adds $30,000 expansion MRR, the customer churn is 4.5% and the expansion offset materially improves churn health.
A strong Series A SaaS company often targets low or negative net revenue churn, meaning expansion revenue offsets lost and contracted revenue.
Investors usually review customer churn, gross revenue retention, net revenue retention, cohort behavior, and whether churn is improving over time.
Customer churn measures lost customer logos, while revenue churn measures the recurring revenue lost from churned or downgraded accounts.
Expansion revenue from upgrades or seat growth can reduce net revenue churn and may produce negative churn when expansion exceeds lost revenue.
Acceptable churn depends on segment, but lower churn and strong net revenue retention are critical for Series A investor confidence.
| Metric | Meaning |
|---|---|
| Customer Churn | Percentage of customers lost during the period. |
| Net Revenue Churn | Revenue loss after expansion offset. |
| Revenue at Risk | Annualized value exposed to churn pressure. |
| Health Score | Composite retention risk indicator. |