Recurring Revenue Analysis in Financial Due Diligence

Recurring revenue is the most valuable type of revenue in any business from an M&A perspective. It is visible, predictable and commands premium valuation multiples. For FDD analysts, the key task is not simply confirming the revenue label — it is rigorously testing whether the recurring revenue is genuinely sticky, defensible and sustainable.

What Counts as Recurring Revenue?

Recurring revenue exists when customers pay on a predictable, repeating basis. Common structures include:

• Annual Recurring Revenue (ARR): Software-as-a-Service (SaaS) subscriptions billed annually or monthly
• Maintenance contracts: Annual service agreements in industrial or technology businesses
• Retainer fees: Professional services firms with long-term client retainers
• Contracted supply agreements: Multi-year supply contracts with minimum volumes
• Licence fees: Annual licence renewals for software or intellectual property

Not all of these are equally "recurring" — quality varies widely.

The FDD Analyst's Framework for Recurring Revenue

Step 1: Define "Recurring" for This Business

Management will often label revenue as recurring. The first task is to apply your own definition:

• Is the revenue contractually committed or just historically repeating?
• What is the notice period for cancellation?
• What is the churn rate (percentage of customers lost per period)?

Step 2: Build a Revenue Bridge by Category

Separate recurring from non-recurring revenue and trace each category year-over-year:

• New customer ARR added each year
• Churned ARR lost each year
• Expansion ARR (upsell to existing customers)
• One-off project revenue

This analysis reveals whether the business is genuinely growing its recurring base or papering over churn with new sales.

Step 3: Assess Churn and Retention

• Gross revenue retention: What percentage of prior-year ARR is still active this year?
• Net revenue retention: Does expansion revenue more than offset churn?
• Logo retention: What percentage of customers renew (regardless of contract value)?

For high-quality SaaS businesses, gross retention above 90% and net retention above 100% are typical benchmarks.

Step 4: Review Contract Terms

Read a sample of contracts to understand:

• Contract length and renewal terms
• Notice periods
• Price escalation clauses
• Exclusivity provisions
• Most-favoured-nation clauses

Step 5: Test the Sustainability of Revenue

Look for factors that could threaten recurring revenue post-acquisition:

• Key customers with contracts ending soon
• Dependency on a platform or partner that could terminate the relationship
• Technological disruption risk
• Price sensitivity or competitive alternatives

Impact on Valuation

High-quality recurring revenue justifies higher valuation multiples. A business with 80% ARR and 95% gross retention may trade at 12–15x EBITDA. A similar-sized business with 40% recurring revenue may trade at 6–8x.

FDD analysts who can clearly articulate the quality of recurring revenue help buyers make better-informed valuation decisions.

Conclusion

Recurring revenue analysis is a technical skill at the intersection of FDD, commercial due diligence and contract review. It is particularly important in software, services and subscription business M&A.

The Transaction Services Interview Programme (€119.99, one-time) includes a dedicated FDD case study on a software business with full recurring revenue analysis. Get access now.