What Metrics Matter Most When Buying a SaaS Business for Sale?

[arclion]

I’ve been browsing marketplaces like Acquire and Flippa looking for a saas business for sale in the B2B productivity niche. I've found a few promising candidates, but I’m struggling to verify the quality of the recurring revenue. When you are looking at a saas business for sale, how much weight do you give to "Gross Churn" versus "Net Revenue Retention"?
I want to make sure the saas business for sale I eventually acquire has a sustainable LTV to CAC ratio (ideally 3:1 or better). Additionally, what is the best way to perform technical due diligence on the codebase? I’m worried about buying a product that looks great on the surface but is built on a "spaghetti code" foundation that will be impossible to scale. Are there specific questions I should ask the seller regarding their "founder-led" sales vs. organic growth?

 

[Matt]

I’d weigh NRR more than gross churn if existing customers expand, that’s a healthy signal. For safety, do a quick code review (docs, tests, deployment) and ask how much revenue depends on the founder selling vs organic growth—that part really matters long-term.

 

[Rolf]

When buying a SaaS business, the most important metrics include Monthly Recurring Revenue (MRR), churn rate, customer acquisition cost (CAC), lifetime value (LTV), growth rate, and gross margin. Evaluating these ensures the business is profitable, scalable, and sustainable, helping buyers make informed decisions about long-term value and investment potential.

 

[mike]

Important metrics of SaaS business are growth, stability, and profitability when purchasing a business. Monthly Recurring Revenue (MRR), Annual Recurring Revenue (ARR), customer acquisition cost, churn rate, and lifetime value are all important factors. Good retention and certain revenue predictability are the keys to success in the long run. The platforms such as Shopify and Salesforce emphasize this aspect of scalable subscription models basing their performance and sustainable growth metrics on these metrics.

 

[elle]

I’d trust NRR more since it shows real growth, but still check churn for red flags; for tech, get a quick dev audit and ask how much growth relies on the founder vs repeatable channels.

 

[Geralt_of_Rivia]

When buying a SaaS business, the most critical metrics to evaluate are Annual Recurring Revenue (ARR), Net Revenue Retention (NRR), Churn Rate, and Gross Margins. These metrics determine the predictability of cash flow, customer satisfaction, and profitability sustainability, which are fundamental to establishing a company's valuation.