SaaS acquisitions have their own failure modes beyond a normal website purchase — churn that isn't obvious from MRR alone, tech debt that only shows up after you own it, and customer migrations that go sideways. Here's what to actually check.
Bottom line:MRR alone doesn't tell you much — how it's composed matters more. Check churn rate, customer concentration, and trend before trusting the headline number. Review the codebase for maintenance risk, and plan the customer migration before you buy, not after.
A listing showing $2,000 MRR tells you almost nothing on its own. The composition of that number matters far more than the number itself.
How many distinct paying customers make up the total — 40 customers at $50/mo is very different from 2 customers at $1,000/mo
Whether revenue is concentrated in one or two large accounts that could churn and take a big chunk of MRR with them
How long the average customer has been subscribed — long-tenured customers signal a product people actually stick with
Whether MRR has trended up, flat, or down over the trailing 6-12 months, not just where it sits today
Two products with identical $2,000 MRR can have very different real value. Broad, stable, growing MRR from many small customers is generally worth more per dollar than the same number concentrated in a few accounts.
Why churn matters more than MRR
Churn is the rate customers cancel each month — and it determines how much of that MRR you actually get to keep without constant new sales just to stand still.
Monthly churn
What it signals
Under 2%
Strong — typical of healthy B2B SaaS
2% – 5%
Healthy — normal range for most small SaaS products
5% – 8%
Watch closely — investigate why before buying
Above 8%
Warning sign — losing a meaningful share of revenue monthly
High churn means the seller (and you, after buying) has to keep replacing lost revenue with new sales just to stay flat — a much harder business to grow than one with low churn, even at identical current MRR.
Technical risk to check
Software you can't maintain or extend affordably is a liability, not an asset — check this before, not after, you buy.
Dependency versions — heavily outdated frameworks often mean near-term, costly rework
Third-party API dependencies — what happens if one of them changes pricing or shuts down?
Whether the app can be run locally by someone other than the seller, with clear setup docs
Deployment process — confirm it isn't tied to the seller's personal cloud or hosting accounts
Any automated tests, or a clear manual QA process, so changes don't silently break things
Planning the customer migration
A SaaS acquisition isn't done at the payment — the transition to your ownership has to happen without breaking things for existing paying customers.
Confirm how existing subscriptions will move to a new payment processor account, or whether the existing account transfers directly
Plan how and when customers are notified of the ownership change, to avoid surprise cancellations
Ask whether the seller will stay briefly available for support during the handover — this alone significantly reduces churn spikes after a sale
Verify you'll have access to the customer list, support history, and any documentation needed to keep support quality consistent
A rushed or silent ownership change is one of the most common causes of a churn spike right after a SaaS acquisition — customers who notice a change with no explanation are more likely to leave, regardless of the product's actual quality.
Valuing a SaaS acquisition
SaaS is typically valued against MRR or ARR rather than raw profit, since recurring revenue is inherently more predictable.
Small indie SaaS products commonly trade between 24x and 48x MRR (roughly 2x–4x ARR), with low-churn, broadly-distributed, growing MRR justifying multiples toward the top of that range. See the Website Valuation Guide for the full breakdown and a worked example comparing two similar-MRR products with different risk profiles.
SaaS-specific red flags
MRR concentrated in one or two accounts with no explanation of what happens if they churn
Churn rate the seller can't or won't clearly state
No access offered to the actual billing dashboard — only exported summaries or screenshots
Codebase the seller is reluctant to give access to before a deal is close to closing
No plan offered for how customer migration will actually happen
SaaS acquisition FAQ
What's a good churn rate for a small SaaS product?
Under 5% monthly is generally healthy, under 3% is strong, and B2B SaaS often runs under 2%. Above roughly 7–8% monthly is a warning sign worth investigating.
How do you evaluate MRR quality before buying a SaaS product?
Look at how many customers make up the total, whether it's concentrated in a few large accounts, average customer tenure, and the trend over the trailing 6–12 months — not just the headline number.
What technical risks should I check before buying a SaaS product?
Outdated dependencies, third-party API dependencies, whether the app runs locally with clear docs, and whether deployment depends on the seller's personal accounts.
How does customer migration work when buying a SaaS business?
Existing subscriptions need to transfer without disrupting billing, customers should be notified of the change, and ideally the seller stays briefly available to reduce post-sale churn.
Ready to evaluate a real SaaS listing?
Browse SaaS and app listings on Siterifty — every purchase runs through escrow-protected checkout with delivery tracked in the deal chat.
This guide covers how to evaluate and acquire a SaaS product or small app: reading MRR composition rather than the headline number (customer count, concentration, tenure, trend), understanding churn rate benchmarks (under 5% monthly is generally healthy, under 2% is strong for B2B), reviewing technical risk (dependency freshness, third-party API reliance, deployment independence from the seller), and planning customer migration to avoid a post-sale churn spike.
Small indie SaaS products typically trade at 24x–48x MRR (roughly 2x–4x ARR). Siterifty is a marketplace where indie developers buy and sell SaaS products, apps, websites, games, templates, and source code, with escrow-protected checkout on every deal.
SaaS & App Acquisition Guide — How to Buy a Micro-SaaS | Siterifty
