How to Calculate Runway: The Ultimate Guide for Founders and Finance Teams

For any business—whether an early-stage startup or an established enterprise navigating a transition—cash is oxygen. Knowing exactly how much time your company has left before its cash reserves are depleted is vital for survival, strategic planning, and fundraising. This metric is known as runway.

Understanding how to calculate and monitor your runway ensures you can make informed decisions long before a financial emergency arises.

1. The Core Formula and Key Components

At its most fundamental level, runway is calculated by dividing your available cash balance by your monthly net burn rate.

$$text{Runway (in months)} = frac{text{Current Cash Balance}}{text{Net Burn Rate}}$$