Why buy a SaaS business?
Software-as-a-service (SaaS) businesses sell access to software on a recurring basis. For acquirers, the appeal is usually:
- Recurring revenue that makes future cash flow more predictable.
- High gross margins, since serving an extra customer often costs little.
- Location independence: many small SaaS businesses run with remote teams.
- Improvement levers: pricing, onboarding, churn reduction and marketing can often be improved by a focused new owner.
The flip side: software can become obsolete, customers can churn quietly, the code may be fragile, and a product built around a single founder's knowledge can be hard to take over.
Key SaaS metrics to understand
| Metric | What it tells you |
|---|---|
| MRR / ARR | Monthly or annual recurring revenue: the core size measure |
| Revenue growth | Whether the business is expanding, flat or shrinking |
| Logo churn | Share of customers lost in a period |
| Revenue churn and net revenue retention (NRR) | Whether existing customers' revenue shrinks or grows after cancellations, downgrades and upgrades |
| Gross margin | Revenue left after hosting, third-party software and support costs |
| CAC and payback | Cost to acquire a customer and how long to earn it back |
| LTV | Expected gross profit from a customer over their lifetime |
| Customer concentration | Dependence on a few large accounts |
| Profit (SDE / EBITDA) | Cash the business actually produces today |
Ask for monthly data going back as far as possible, broken out by cohort (the month customers started). Averages can hide deteriorating newer cohorts.
How SaaS businesses are valued
Small, owner-operated SaaS businesses are often valued on a multiple of profit (SDE), especially when growth is modest. Larger or faster-growing SaaS companies are frequently valued on a multiple of ARR or revenue, because profit may be deliberately reinvested in growth.
What pushes multiples up or down:
- Growth rate and its consistency.
- Churn and net revenue retention.
- Gross margin.
- Size and diversification of the customer base.
- Product and technical quality.
- Owner dependence and team depth.
- Market size and competitive position.
Read SaaS multiples: what is my SaaS worth? for more detail and try the calculator below. Its output is an illustrative screening estimate, not a market quote.
SaaS Valuation Calculator
An indicative ARR multiple from growth, margin, churn and concentration.
Where to find SaaS businesses for sale
- Online marketplaces and brokers that specialise in software and online businesses.
- Direct outreach to founders of small, profitable tools in niches you understand.
- Founder communities and forums.
- Your own network: tools you use or that serve customers you know.
See SaaS for sale: what to know before you buy for how listings typically work and what to ask first.
SaaS due diligence: what to check
Revenue and customers
- Reconcile MRR to payment processor data and bank deposits.
- Cohort retention and churn by plan.
- Refunds, chargebacks and failed payments.
- Discounts and grandfathered pricing.
- Concentration: revenue share of the largest accounts.
- Contracts with larger customers and their assignment terms.
Product and technology
- Code ownership, licences and any open-source compliance issues.
- Architecture, hosting setup and costs.
- Technical debt and test coverage.
- Security practices, past incidents and data protection compliance.
- Dependencies on third-party APIs or platforms that could change terms.
- Documentation and the ease of handing the codebase to a new developer.
Consider an independent technical review if you are not technical yourself.
Growth and marketing
- Channel mix: organic search, paid, partnerships, marketplaces, word of mouth.
- Dependence on one channel or platform.
- Funnel metrics: trials, conversion, activation.
Team and operations
- Who builds, supports and sells the product today?
- Contractors vs employees, and their agreements (especially IP assignment).
- Support volume and quality.
Use our full due diligence checklist as the base and add these SaaS-specific items.
Financing a SaaS acquisition
SaaS acquisitions are often harder to finance with traditional bank debt than businesses with hard assets, although some lenders, including SBA lenders in the US, do finance profitable software businesses based on cash flow. Seller financing and earnouts are common, and some buyers use investor equity. See business acquisition financing and non-dilutive capital.
Acquisition Financing Calculator
Senior debt plus seller note: DSCR and post-debt cash flow.
The first 90 days after buying a SaaS business
- Secure access: domains, hosting, code repositories, payment processors and admin accounts.
- Stabilize: keep the product running, keep support responsive, avoid big changes.
- Talk to customers to understand why they buy and why they leave.
- Fix churn first: retention improvements compound.
- Then grow: pricing, onboarding, content and partnerships.
Red flags specific to SaaS acquisitions
| Red flag | Why it matters |
|---|---|
| MRR that does not match payment processor data | Revenue may be overstated or include one-off charges |
| Rising churn in recent cohorts | The product may be losing fit with newer customers |
| Lifetime deals counted as customers | Inflates the user base without recurring revenue |
| One developer with no documentation | Continuity risk after the handover |
| Heavy reliance on a single integration or platform | A policy or API change could cut distribution or functionality |
| Large accounts on custom terms | Concentration and contract risk |
| Recently cut marketing or support to boost profit | Earnings may not be sustainable |
Valuation sanity checks for buyers
Before you sign an LOI, run three checks:
- Profit check: does the price make sense relative to normalized profit after paying for the work the founder does?
- Retention check: if churn continued at its recent rate and new customer acquisition slowed, how quickly would revenue decline?
- Financing check: can the business service any debt and seller-note payments with a comfortable DSCR?
If the price only works when everything goes right, negotiate structure (seller note, earnout, transition support) or walk away.
Structuring a SaaS deal
Common structures in smaller SaaS acquisitions include:
- Cash at close plus a seller note, which reduces upfront cash and keeps the founder invested in the handover.
- Earnouts tied to revenue retention or MRR after closing, to bridge disagreements about churn.
- Escrow or holdbacks for a period, to cover undisclosed liabilities.
- Consulting or transition agreements so the founder supports the product and customers for an agreed time.
Document what transfers: code repositories, domains, trademarks, customer data (in line with privacy rules), payment processor relationships and third-party accounts. Payment processor and app store accounts often cannot simply be handed over, so plan for migration.
Building your post-acquisition plan
Write down your 12-month plan before you close. Typical priorities for a small SaaS product are retention, pricing and packaging, onboarding, content and search, partnerships, and product reliability. Tie each one to a metric you can track monthly.
Reading a SaaS profit and loss statement
SaaS financials can look healthy on the surface while hiding problems. When you receive the P&L, rebuild it in these categories so you can compare businesses consistently:
- Recurring revenue: subscription revenue only, separated from setup fees, services and one-off sales.
- Cost of revenue: hosting, third-party software that scales with usage, payment processing and customer support. Subtracting these from revenue gives gross margin.
- Sales and marketing: paid acquisition, content, affiliates, sales staff and tools.
- Product and engineering: developers, contractors and tools. Note whether the owner does most of this work unpaid.
- General and administrative: accounting, legal, insurance and other overhead.
- Owner adjustments: list separately, and replace unpaid owner work with a realistic cost of hiring someone to do it.
The last point is often decisive. A SaaS business where the founder writes all the code, answers support and runs marketing can show high profit that disappears once those roles are paid.
Cohort analysis without a data team
You do not need sophisticated tooling to understand retention. Ask the seller for a customer-level export from the billing system with start date, cancellation date (if any) and monthly revenue. Group customers by the month or quarter they started and track how much of each group's revenue remains after six, twelve and twenty-four months.
What you are looking for:
- Stable or improving cohorts. Newer cohorts retain as well as or better than older ones.
- Expansion. Some cohorts grow revenue over time through upgrades or seats.
- Warning signs. Recent cohorts that churn faster, or retention propped up by a few large accounts.
If the seller cannot produce this data, treat that as a finding in its own right.
Technical diligence for non-technical buyers
If you cannot evaluate code yourself, hire someone who can for a short, scoped review. Ask them to cover:
- Whether the code is in version control and the buyer can build and deploy it independently
- Dependencies, frameworks and how out of date they are
- Hosting architecture, costs and single points of failure
- Security practices, access control and any known incidents
- Documentation and how long a new developer would need to become productive
- Third-party services and API dependencies that could change terms or pricing
Ask for a plain-language summary with a list of issues ranked by severity and estimated effort to fix. Those estimates feed directly into your offer.
Transfer checklist for software businesses
Software deals involve many small transfers that are easy to miss. Build a list and agree it in the purchase agreement:
- Domains, DNS and email
- Source code repositories and deployment pipelines
- Hosting and cloud accounts, including billing ownership
- Payment processor and billing system, with customer payment methods
- App store and marketplace listings
- Social, analytics, ad and email marketing accounts
- Third-party API keys and contracts
- Trademarks and any other registered IP
- Documentation, credentials vault and support history
Plan the payment processor migration carefully. Moving customer billing without losing subscriptions is one of the riskiest operational steps in a SaaS handover.
Frequently asked questions
Is buying a SaaS business a good idea?
It can be for buyers who understand software, customers and recurring revenue businesses. Risks include churn, technical debt and dependence on the founder or a single channel.
Do I need to be technical to buy a SaaS business?
Not necessarily, but you need access to trustworthy technical help for diligence and ongoing development. Budget for it.
How are small SaaS businesses valued?
Often on a multiple of profit for smaller owner-run products, and on a multiple of ARR or revenue for larger, faster-growing ones. Growth, churn, margins and concentration drive the multiple.
What is the biggest risk when buying a SaaS business?
Common risks are hidden churn, revenue that does not reconcile, unmaintainable code and owner dependence. Cohort analysis and an independent technical review address many of them.
Sources and further reading
Primary sources for the rules and definitions referenced in this guide. Programs and rules change; check the current version.
- 7(a) loans, U.S. Small Business Administration. SBA guarantees loans made by participating lenders; 7(a) proceeds can be used for changes of ownership; maximum loan amount.
- Sale of a business, Internal Revenue Service. In a sale of business assets, each asset is generally treated as sold separately for tax purposes.
- About Form 8594, Asset Acquisition Statement, Internal Revenue Service. Buyer and seller must both report the allocation of the price when a group of business assets with goodwill is sold.
Educational content, not advice. Bootstrapper.com publishes general information for education. It is not legal, tax, accounting, lending or investment advice and does not consider your circumstances. Calculator outputs are illustrative estimates. Rules, rates and programs change; confirm details with qualified professionals before making decisions.