Financial Glossary
Gross Retention
Gross retention (also called gross revenue retention or GRR) measures the percentage of recurring revenue from an existing customer cohort that is retained over a period, counting only losses from downgrades and full cancellations -- explicitly excluding any expansion revenue from upsells or cross-sells. The formula is: GRR = (Starting MRR - Churned MRR - Contraction MRR) divided by Starting MRR, multiplied by 100. GRR is capped at 100% because expansion is not included. It isolates the core retention question: are existing customers staying and maintaining their current spend level? High GRR (typically above 90% for SMB SaaS, above 95% for enterprise SaaS) indicates product stickiness independent of the upsell motion.
Problem & Application
A marina management software company starts a quarter with $200,000 in MRR from existing customers. During the quarter, $6,000 in MRR churns from customers who cancel, and $4,000 in MRR contracts from customers who downgrade to lower-tier plans. GRR = ($200,000 - $6,000 - $4,000) / $200,000 = $190,000 / $200,000 = 95%. Separately, expansion MRR (upsells) of $12,000 pushes NDR to ($200,000 + $12,000 - $4,000 - $6,000) / $200,000 = 101%. Both metrics matter but diagnose different problems. If GRR is 80% but NDR is 100%, the company is masking a serious churn problem with aggressive upselling -- a strategy that eventually collapses when the upsell-eligible base runs out. A fractional CFO presenting to a board or investor would report both metrics separately, segment GRR by customer vintage and size tier, and identify whether churn is concentrated in a particular product line or customer segment. For an SMB-focused SaaS, GRR below 85% is a critical warning sign requiring customer success intervention before new logo acquisition.
In Short
Gross retention is vital for understanding customer loyalty and long-term business sustainability. It should be monitored and improved through targeted retention strategies.