17+ expert resources organized into a structured framework for buyer-side SaaS evaluation. Master churn analysis, concentration risk, revenue quality, and deal-specific red flags — all in one place.
How to use this guide: Each section below covers a critical dimension of SaaS due diligence. Start with Understanding Churn if you're new to buyer-side analysis, or jump directly to a topic. For a quick-start, download the 23-point churn audit checklist — it covers every check in this guide in a printable format.
TL;DR: This hub organizes 17+ buyer-side SaaS due diligence resources across 4 sections: churn analysis, risk detection (concentration, zombie MRR, annual cliffs), valuation tools (RQS, risk assessment), and deal-specific guides (checklists, red flags, evaluation frameworks). Start with the churn section if you're new, or use the A-Z list for quick navigation.
Churn is the single most important metric in SaaS acquisitions — and the most commonly manipulated. These resources teach you how real churn analysis works, how sellers hide it, and how to compute the numbers yourself.
Beyond headline churn, several structural risks can destroy deal value. These resources help you identify concentration traps, annual-plan decay, zombie MRR, and inactive accounts that sellers don't flag.
Move beyond back-of-the-envelope multiples. These resources provide structured frameworks and scores for evaluating the actual quality of a SaaS target's revenue and retention.
Ready to evaluate a specific opportunity? These resources walk through the end-to-end process of buying a SaaS business, including red flags to avoid and a printable checklist to use during active due diligence.
Every SaaS due diligence resource from ChurnLens in a single list. Bookmark this page — it's your command center for buyer-side evaluation.
The 23-point churn audit checklist catches everything a seller won't tell you — in a format you can use during active due diligence.
Get the free checklist →Hidden churn is revenue decay that headline metrics conceal: customers on annual plans who have already stopped using the product, paid accounts sitting inactive, or revenue concentrated in a few logos about to leave. A SaaS business can show flat MRR while its real retention is collapsing. ChurnLens surfaces these signals before you buy, so you price the deal on true revenue quality.
ChurnLens analyzes five dimensions: revenue concentration, logo retention, annual-plan churn risk, inactive paid accounts, and MRR decline patterns. Each is weighted into a single 0-100 revenue-quality score benchmarked against comparable SaaS businesses. The score tells an acquirer whether reported MRR is durable or propped up by customers who are one renewal away from leaving, all before the deal closes.
Purchase price is usually a multiple of recurring revenue, so overstated retention directly inflates what you pay. A business with 20% hidden annual-plan churn is worth far less than its MRR implies. Buyers who skip churn diligence discover the decay only after closing, when it is too late to renegotiate. ChurnLens gives that visibility during the evaluation window instead.
Watch for revenue concentrated in a handful of accounts, a widening gap between signups and active users, annual contracts that never renew, and MRR that grows only through discounting. Each pattern signals fragile revenue. ChurnLens automatically flags these red flags from uploaded revenue data and ranks them by how much they threaten the durability of the recurring revenue base.
| Risk dimensions scored | 5 |
|---|---|
| Revenue-quality score range | 0-100 |
| Built for | Acquirers, PE, founders |
📥 Free SaaS Due Diligence Checklist
The exact 47-point checklist PE analysts use before acquiring SaaS businesses. 5-minute read.
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