Cash & Burn
Future Events (Optional)
Applied in month 1, e.g. equipment, deposits, legal fees.
Scenario
- -Revenue grows in line with current expectations
- -Customer acquisition and retention remain stable
- -Operating expenses grow as planned
- -Fundraising occurs within expected timelines
Results
Enter your cash balance and monthly burn to see your projected runway, cash curve, and fundraising timing.
About the Startup Runway Calculator
The startup runway calculator estimates how long your startup can survive before running out of cash. It analyzes your current cash balance, monthly burn rate, recurring revenue, and growth assumptions to project your cash position month by month, so you know your cash-out date and when to start fundraising.
How runway is calculated
The basic formula is runway equals current cash divided by net monthly burn, where net burn is monthly expenses minus monthly revenue. A startup with $500,000 in the bank burning $50,000 net per month has roughly 10 months of runway. Unlike a basic calculator, this model compounds revenue growth and burn growth each month and layers in one-time expenses and future funding rounds, so the projection reflects how your business actually behaves.
When to start fundraising
Venture rounds typically take three to six months to close, so founders are generally advised to begin investor conversations at least six months before the projected cash-out date. The calculator flags your fundraising urgency and the month you should start raising, and shows the breakeven month where revenue overtakes burn under each scenario.
Who this calculator is for
- -Founders planning fundraising timelines and capital needs
- -Burn rate analysis and startup budget planning
- -Cash flow forecasting for SaaS and other startups
- -Board meeting and investor reporting preparation
- -Stress-testing conservative, base, and aggressive growth scenarios