Runway
How many months your current cash lasts at your current burn rate.
Last reviewed 12 September 2026
Runway is the single number that tells you how much time you have to change something. Under six months it drives every decision you make; over eighteen it buys you the right to experiment.
Calculate it on net burn, not gross spend, and recalculate it monthly — a hiring round or one large invoice moves it fast.
Formula
Runway (months) = Cash in bank ÷ Average monthly net burn
Example
€180,000 in the bank, €30,000 net burn per month → 6 months of runway.
Frequently asked
What is runway?+
How many months your current cash lasts at your current burn rate. Runway is the single number that tells you how much time you have to change something. Under six months it drives every decision you make; over eighteen it buys you the right to experiment. Calculate it on net burn, not gross spend, and recalculate it monthly — a hiring round or one large invoice moves it fast.
How do you calculate runway?+
Runway (months) = Cash in bank ÷ Average monthly net burn For example: €180,000 in the bank, €30,000 net burn per month → 6 months of runway.
Why does runway matter for founders?+
Calculate it on net burn, not gross spend, and recalculate it monthly — a hiring round or one large invoice moves it fast.
Related terms
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