SaaS Quick Ratio
Ratio of new+expansion revenue to churn+contraction.
Quick ratio measures how efficiently a SaaS grows despite churn. Above 4 is excellent; under 1 means churn is eating new revenue. Popular with growth-stage investors because it captures gross efficiency in a single number.
Formula
Quick Ratio = (New MRR + Expansion MRR) / (Churned MRR + Contraction MRR)