SaaS Break-Even Calculator
Find out how many subscribers you need to cover your monthly costs.
How do you calculate a SaaS break-even point?
For a subscription business, the break-even point is the number of paying customers required for your Monthly Recurring Revenue (MRR) to equal your monthly fixed costs — salaries, hosting, tools, and other overhead. The formula is simple: divide your monthly fixed costs by your subscription price per customer, then round up, since you can't have a fraction of a customer. Once you're above this number, every additional customer contributes directly to profit (assuming your variable costs per customer are minimal, which is typically true for software).
Why churn and customer lifetime matter for break-even planning
Reaching your break-even customer count once isn't the end of the story — if your monthly churn rate is high, you'll need a constant stream of new signups just to stay above break-even, since existing customers are cancelling every month. A 5% monthly churn rate implies an average customer lifetime of about 20 months (calculated as 1 divided by the churn rate), while a 10% churn rate cuts that lifetime in half to about 10 months. Lower churn means each customer contributes more total revenue over their lifetime, which reduces the pressure to constantly acquire new customers just to tread water.
Understanding the LTV:CAC ratio
The LTV:CAC ratio compares a customer's total Lifetime Value (subscription price times their estimated lifetime in months) to your Customer Acquisition Cost — what you spend on sales and marketing to win them. A ratio of 3:1 or higher is widely considered healthy, meaning you earn at least three dollars in lifetime revenue for every dollar spent acquiring a customer. A ratio below 1:1 means you're losing money on every customer you acquire, while a very high ratio (10:1 or more) can sometimes suggest you're under-investing in growth and could acquire customers faster.
Frequently Asked Questions
How do I calculate my SaaS break-even point?
Divide your monthly fixed costs by your monthly subscription price per customer, then round up to the nearest whole customer. That's the minimum number of paying customers you need for your recurring revenue to cover your overhead.
What is a good LTV:CAC ratio for a SaaS business?
A ratio of 3:1 or higher is generally considered healthy — meaning you generate at least three dollars in customer lifetime revenue for every dollar spent acquiring that customer. Ratios below 1:1 signal you're losing money on customer acquisition.
How does churn rate affect break-even and lifetime value?
Higher churn shortens the average customer lifetime (calculated as 1 divided by the monthly churn rate), which reduces each customer's lifetime value. Lower churn means each customer sticks around longer and contributes more total revenue, easing pressure on constant new acquisition.
Does reaching break-even mean my SaaS business is profitable?
Reaching break-even means your recurring revenue covers your current fixed costs, but you also need to account for customer acquisition costs and any variable costs per customer to determine true profitability beyond that point.
What counts as a "fixed cost" in this calculator?
Fixed costs are expenses that don't change with your customer count — salaries, office rent, hosting infrastructure, and software tools are typical examples. Variable, per-customer costs like payment processing fees are not included in this simplified model.
Why is customer acquisition cost (CAC) important if it's not part of the break-even formula?
CAC doesn't directly change your break-even customer count, but it determines whether acquiring those customers is actually worthwhile. A low LTV:CAC ratio can mean you're technically at break-even on operating costs while still losing money overall once acquisition spend is included.
Can a SaaS business be profitable with very high churn?
It's difficult, since high churn shortens customer lifetime value and forces continuous, often expensive, new customer acquisition just to maintain revenue. Most sustainable SaaS businesses aim for monthly churn well under 5%.
How often should I recalculate my break-even point?
Whenever your fixed costs, pricing, or churn rate change meaningfully — most SaaS founders revisit these numbers monthly or quarterly as part of regular financial planning.