SaaS Growth & Valuation Calculator
Model your software business's unit economics. Input your key metrics to visualize Lifetime Value (LTV), Acquisition Costs (CAC), and future revenue trajectories.
Growth Levers
24-Month Forecast
Metric Definitions & Formulas
Master Your Unit Economics
In the world of SaaS, revenue is vanity, profit is sanity, but unit economics are reality. Whether you're bootstrapping or raising Series A, understanding the relationship between how much you spend to acquire a customer (CAC) and how much they are worth (LTV) is the single most important predictor of success.
This calculator uses the standard "VC-approved" formulas to help you stress-test your business model. It's designed to be conservative—accounting for gross margins and churn impacts that many founders overlook.
The Golden Ratio (LTV:CAC)
This measures the return on investment for every dollar spent on sales and marketing.
- 3:1The industry standard target. You make $3 for every $1 spent.
- 5:1High efficiency. You might actually be under-spending on growth!
- 1:1Burning cash. You lose money on every customer acquired.
Payback Period
Cash flow kills startups faster than low margins. This metric tells you how long you float the cost of a new customer.
- < 9 moExcellent. Allows for rapid compounding of capital.
- 12 moStandard for venture-backed startups.
- > 18 moDanger zone. Requires massive capital reserves to grow.
Why Churn is the "Silent Killer"
Most founders focus on adding new customers (Growth), but reducing churn is often the most effective lever for increasing valuation.
Because SaaS value is based on recurring revenue, losing 5% of your customers monthly doesn't just hurt today—it caps your maximum possible size.
*Simplified ceiling formula: New Sales / Churn Rate
SaaS Metrics Glossary
MRR (Monthly Recurring Revenue)
The predictable revenue your business generates every month. It excludes one-time fees.
CAC (Customer Acquisition Cost)
Total Sales & Marketing Spend / Number of New Customers acquired in that period.
LTV (Lifetime Value)
The total gross profit you expect to make from a single customer before they churn.
Churn Rate
The percentage of customers who cancel their subscription within a given period.
ARPU (Average Revenue Per User)
Total MRR / Total Number of Customers. A key metric for measuring pricing power.
Payback Period
The number of months it takes to recover the cost of acquiring a customer (CAC).
How to Improve Your Metrics
Increase Pricing (ARPU)
Most SaaS companies undercharge. Raising prices by 10% often drops conversion by less than 10%, leading to immediate LTV improvement.
Reduce Churn with Annual Plans
Customers on annual plans churn at significantly lower rates. Incentivize upfront payment to boost cash flow and LTV.
Focus on Ideal Customer Profile (ICP)
High CAC often comes from targeting the wrong people. Narrow your marketing to those who convert fastest and stay longest.
Trusted Industry References
Our calculator methodologies are aligned with standard SaaS accounting principles and benchmarks from leading venture capital firms.
Need a CFO to review your numbers?
Calculators are great, but expert advice is better. Get a professional audit of your SaaS metrics and a roadmap to higher valuation.
Frequently Asked Questions
What is a good LTV:CAC ratio?
A ratio of 3:1 is considered the industry standard for a healthy SaaS business. This means you generate $3 in gross profit for every $1 spent acquiring a customer. A ratio of 5:1 or higher suggests you could be growing faster by spending more, while 1:1 implies your business model is not sustainable.
How do I calculate SaaS Valuation?
SaaS companies are typically valued on a multiple of their Annual Recurring Revenue (ARR). This multiple varies based on growth rate, NRR, and market conditions. Private B2B SaaS companies often trade between 5x and 15x ARR, though top-tier "Rule of 40" companies can command much higher premiums.
Why does Gross Margin matter for LTV?
Many founders mistakenly calculate LTV using Revenue. You must use Gross Profit (Revenue minus Cost of Goods Sold, like hosting and support). If your margin is 80%, your LTV is 20% lower than your "Revenue LTV". Ignoring this can lead to overspending on acquisition.