ARR and the retention rates are the underwriting
Pull customer cohort data, not just revenue. What matters is monthly recurring revenue (MRR), the renewal rate by cohort, gross dollar retention (revenue retained excluding expansions), and net dollar retention (including expansions and price increases). Healthy SaaS businesses run 85%+ gross retention and 100%+ net retention. Below 80% gross retention is a red flag. Verify the metrics with raw data, not the seller's summary slides.