STARTUP · CASH PLANNING
Startup Runway Calculator
Calculate months of runway from cash, burn rate, and revenue growth assumptions.
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Result
Cash projection
How to use it
- Enter cash on hand, monthly burn, current monthly revenue, expected monthly revenue growth, and any planned burn reduction. Use fully loaded burn including payroll, software, rent, and debt service so runway reflects real cash usage.
- Read runway months, projected cash-out date, monthly cash projection, and break-even month. Fewer than 6 months of runway is usually acute, while 12-18 months gives most startups a healthier fundraising or restructuring window.
- Compare break-even month to cash-out month, not just to your optimism about growth. If break-even arrives after cash reaches zero, the current plan still fails even if the top-line narrative sounds attractive.
- Use the projection to test a no-growth case, a modest growth case, and a burn-cut case before making hiring or fundraising decisions. If a 10% burn reduction adds more runway than an aggressive growth assumption, the operations lever is probably safer than the sales story.
- Re-run monthly after the close and after any staffing, pricing, or financing change. Track actual runway versus modeled runway because even one or two bad months can pull the cash-out date forward sharply.
Questions people usually ask
What is startup runway?
Runway is the number of months your startup can continue operating at its current burn rate before cash reaches zero.
How is revenue growth modelled?
Revenue compounds monthly at your specified growth rate. A 5% monthly growth means revenue multiplies by 1.05 each month.
What if my burn rate changes?
Use the burn reduction percentage to model decreasing costs over time. Set to 0% for constant burn.
Is this tool free and private to use?
Yes. AI Biz Hub tools are free, no-signup browser tools. Inputs stay in your browser unless you choose to share a URL.
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Step-by-step guides that use this tool.