GRR (Gross Revenue Retention)
Revenue held from existing customers, ignoring expansion.
GRR is NRR minus expansion revenue. It measures how well you hold existing revenue, capped at 100%. Investors look at GRR and NRR together: high GRR (90%+) means low churn, while high NRR above GRR means strong expansion. A gap between the two shows how much of your growth comes from upsell.
Formula
GRR = (Starting MRR - Contraction - Churn) / Starting MRR x 100