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SaaS Valuation Guide: What's Your Software Business Worth?
SaaS valuations depend on your size, growth rate, and key metrics. This guide covers ARR vs. SDE multiples, the Rule of 40, the metrics that matter most, and real examples of what SaaS businesses sell for.
SaaS
2.4x-4.0x SDE
12 min read
Updated September 2026
Legend Atty · Founder, BridgeBook
53 businesses sold · $105,000,000+ in total value·Updated September 30, 2026
ARR Multiples vs. SDE Multiples: Which to Use
SDE Multiples (Most Owner-Run SaaS)
For bootstrapped, owner-run SaaS businesses, use SDE multiples. This is the same approach used for other small businesses - take your total owner profit and multiply it.
Typical range: 2.4x-4.0x SDE, based on sold deals
Best for: solo-founder SaaS, lifestyle businesses, niche tools with stable revenue.
ARR Multiples (Venture-Backed SaaS)
Revenue multiples come from fast-growing, venture-backed companies. That's a different market. Sold-deal data for profitable, owner-run SaaS doesn't support pricing on ARR; larger companies trade on EBITDA instead.
Larger companies: about 3.5x-5.8x EBITDA
Applies to: venture-funded companies selling on growth, not most owner-run SaaS.
Growing past $2,000,000 of SDE? Buyers switch from SDE to EBITDA at about that size. Our free valuation calculator handles both approaches.
The Rule of 40 Explained
The Rule of 40 is a quick health check for SaaS businesses. It says your annual revenue growth rate + profit margin should exceed 40%. It's a simple way for buyers to assess whether your SaaS balances growth with profitability.
Passes Rule of 40
High Growth
50% growth + (-5%) margin = 45%
Growing fast, burning some cash. Buyers accept this if the unit economics are strong.
Ideal Balance
Balanced
30% growth + 20% margin = 50%
Strong growth with healthy profitability. This is the sweet spot that commands premium multiples.
Passes Rule of 40
Profitable
10% growth + 35% margin = 45%
Mature and highly profitable. Attractive to PE buyers who value cash flow over growth.
Why it matters: SaaS businesses that pass the Rule of 40 typically sell for 20-40% higher multiples than those that don't. It's not a hard rule, but it's a benchmark every serious buyer will calculate.
Key SaaS Metrics Buyers Care About
These are the metrics every SaaS buyer will ask for. Know your numbers before you go to market.
MRR / ARR
$50,000+ MRR
Monthly and Annual Recurring Revenue. The foundation of your valuation. Buyers want to see consistent growth month over month.
Monthly Churn
Under 3%
The percentage of customers who cancel each month. Under 2% is excellent. Over 5% is a red flag that signals product-market fit issues.
Net Revenue Retention
Over 100%
How much revenue you retain from existing customers including upsells. Over 100% means customers spend more over time. Over 120% is exceptional.
CAC (Customer Acquisition Cost)
LTV:CAC > 3:1
How much it costs to acquire one customer. Compare to LTV to see if your growth is efficient. Payback period under 12 months is ideal.
LTV (Lifetime Value)
3x+ CAC
Total revenue from an average customer over their lifetime. Higher LTV means more profitable customers and justifies higher acquisition spending.
CAC Payback Period
Under 12 months
How long it takes to recoup the cost of acquiring a customer. Under 12 months is good. Under 6 months is exceptional.
Know your metrics? Get a valuation in 2 minutes.
Our calculator uses your actual SaaS metrics to give you a personalized range.
Real-World SaaS Valuation Examples
Here are three made-up examples showing how different SaaS profiles lead to different valuations, built on sold-deal ranges (2.4x-4.0x SDE).
Bootstrap SaaS
Solo-Founder Tool
$200,000 SDE, $300,000 ARR
Profitable, 2% monthly churn
Niche B2B, stable revenue, no team
$200,000 SDE × 3.4x
$680,000
Growth SaaS
Growing B2B Platform
$500,000 ARR, growing 40% YoY
1.5% monthly churn, 110% NRR
Small team, strong product-market fit
$225,000 SDE × 4.0x
$900,000
Scale SaaS
Established Platform
$2,000,000 ARR, growing 50% YoY
1% monthly churn, 125% NRR
Engineering team, enterprise customers
$600,000 SDE × 4.0x
$2,400,000
What Kills SaaS Valuations
These are the most common issues that destroy SaaS valuations or kill deals outright:
High churn (over 5% monthly) - If you're losing more than 5% of customers every month, your revenue is declining unless you're acquiring customers at an unsustainable rate. Fix churn before you sell.
Single customer dependency - If one customer makes up 20%+ of your revenue, buyers see massive risk. What if they leave? Diversify your customer base before going to market.
Significant technical debt - Outdated frameworks, no tests, poor documentation, security vulnerabilities - these all reduce your multiple or extend due diligence to the point where deals fall apart.
No documentation - If the product knowledge lives entirely in the founder's head, the business is untransferable. Buyers need architecture docs, runbooks, and codebase documentation.
Declining revenue trends - Flat is OK. Declining is a deal-killer. If your last 3-6 months show shrinking MRR, fix the trend before going to market - or expect a significant discount.
Founder as sole developer - If you wrote every line of code and maintain the entire infrastructure, the business has massive key-person risk. Start documenting and training (or hiring) before you sell.
Frequently Asked Questions
When should I use ARR multiples vs SDE multiples for my SaaS?
Most small SaaS businesses are priced on SDE: about 2.4x-4.0x, based on sold deals. Once SDE passes roughly $2,000,000, buyers switch to EBITDA, about 3.5x-5.8x. ARR (revenue) multiples come from fast-growing, venture-backed companies, a different market, and rarely apply to a profitable, owner-run SaaS.
What is the Rule of 40 and why does it matter?
The Rule of 40 says your growth rate plus your profit margin should exceed 40%. For example, 30% growth and 15% margins equals 45%, which passes. It matters because it shows buyers your SaaS balances growth with profitability - companies that pass the Rule of 40 command premium valuations.
What SaaS metrics do buyers care about most?
Monthly churn rate (under 3% is good, under 2% is great), net revenue retention (over 100% means existing customers spend more over time), LTV to CAC ratio (above 3:1 is healthy), and CAC payback period (under 12 months is ideal). These four metrics together tell the story of a healthy SaaS business.
Does technical debt affect my SaaS valuation?
Yes, significantly. Buyers will review your codebase during due diligence. Significant technical debt - outdated dependencies, poor architecture, no tests, security vulnerabilities - can drop you to the bottom of the range or even kill the deal. Clean, well-documented code is a major value driver.
How does customer concentration affect SaaS valuation?
If any single customer makes up more than 10-15% of your revenue, it is a risk factor that reduces your multiple. If one customer is 25% or more, some buyers will walk away entirely. The ideal is no single customer above 5% of total revenue.
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