Runway is the amount of time a startup can continue to operate before running out of cash, assuming no new revenue is generated.
Serves as a vital financial metric for unit economics and investor reporting; tracking Runway helps founders manage cash runway and growth efficiency during cash flow forecasting and operational planning.
Runway is the amount of time a startup can continue to operate before running out of cash, assuming no new revenue is generated and expenses remain constant. It is calculated by dividing the company's current cash balance by its monthly net burn rate (Runway = Cash / Net Burn). Maintaining a healthy runway (ideally 18 to 24 months after a funding round) is crucial for giving the team enough time to build, scale, and launch a fundraising campaign without running out of cash.
Runway = Current Cash Balance / Monthly Net Burn Rate.
Gross Burn Rate represents total monthly operating expenses (salaries, hosting, office, tooling), whereas Net Burn Rate subtracts monthly revenue from gross burn (Net Burn = Gross Expenses - Monthly Revenue).
Ideally, 18 to 24 months of runway after a major funding round, giving the team 12-18 months of focus and 6 months to raise the next round.
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