Financial Health

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Runway (Months)

Q: What is startup runway?

Runway is the number of months a company can operate before running out of cash, calculated as cash balance divided by monthly net burn rate. A company with $500K and $50K/month burn has 10 months of runway.

Q: How much runway should a startup have?

After a funding round, target 18-24 months. Start fundraising at 9-12 months remaining. Below 6 months is the danger zone — cut costs immediately and accelerate fundraising or revenue efforts.

Q: When should I start fundraising based on runway?

Begin when you have 9-12 months of runway. Fundraising takes 3-6 months on average, and you want to close while you still have 6+ months remaining to negotiate from a position of strength.

Q: How do I extend runway without fundraising?

Reduce burn rate (freeze hiring, cut marketing, renegotiate contracts), accelerate revenue (shorter sales cycles, price increases), or secure non-dilutive funding (revenue-based financing, grants, government programs).

Startup runway is cash balance divided by monthly net burn rate. It tells you how many months until you run out of money. Target 18 to 24 months after funding. Start fundraising at 9 to 12 months remaining. Below 6 months is the danger zone.

Why Runway Matters

Runway determines every strategic decision a startup makes: when to fundraise, when to hire, when to cut costs, and how aggressively to invest in growth. Companies with 18+ months of runway can take calculated risks. Companies with 6 months of runway are in survival mode. The difference between these two situations is often the difference between building a great company and a fire sale. Running out of cash is the number-one reason startups fail.

How to Calculate Runway

Divide current cash balance by monthly net burn rate (expenses minus revenue). For a more sophisticated estimate, account for revenue growth trends that reduce burn over time.

Runway Formula

Runway (Months) = Cash Balance ÷ Monthly Net Burn Rate

Runway Calculator

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Current Cash Balance

Monthly Net Burn Rate

Runway

12.50 months

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Industry Benchmarks

Segment	Good	Average	Poor
Comfortable	>18 months	12–18 months	<12 months
Fundraising trigger	>12 months	6–12 months	<6 months
Danger zone	>6 months	3–6 months	<3 months
Post-funding target	>24 months	18–24 months	<18 months

Expert Tips

After a funding round, aim for 18-24 months of runway. This gives you 12-18 months to execute before you need to start the next fundraise.

Recalculate runway monthly. Revenue growth, new hires, and unexpected costs all change the number. Set alerts at 12, 9, and 6 months remaining.

If runway drops below 6 months, immediately reduce burn: freeze hiring, cut non-essential spend, renegotiate contracts. Every month of extended runway matters.

Static runway calculation assumes constant burn. If you're growing revenue, your effective runway is longer. Model both scenarios.

Frequently Asked Questions

What is startup runway?

Runway is the number of months a company can operate before running out of cash, calculated as cash balance divided by monthly net burn rate. A company with $500K and $50K/month burn has 10 months of runway.

How much runway should a startup have?

After a funding round, target 18-24 months. Start fundraising at 9-12 months remaining. Below 6 months is the danger zone — cut costs immediately and accelerate fundraising or revenue efforts.

When should I start fundraising based on runway?

Begin when you have 9-12 months of runway. Fundraising takes 3-6 months on average, and you want to close while you still have 6+ months remaining to negotiate from a position of strength.

How do I extend runway without fundraising?

Reduce burn rate (freeze hiring, cut marketing, renegotiate contracts), accelerate revenue (shorter sales cycles, price increases), or secure non-dilutive funding (revenue-based financing, grants, government programs).

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Business Models Using Runway

Runway is a key metric for these business types. Click any model to see how Revenue Map calculates it automatically.

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