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Cash Runway Calculator

How many months until the cash runs out?

Enter your current cash balance, monthly revenue, and monthly expenses to see your runway. This is the single most important number for business survival.

Enter Your Numbers

What's in your bank account right now? Include checking, savings, and any cash reserves.

What comes in each month? Use your average over the last 3-6 months.

Everything that goes out: payroll, rent, materials, insurance, utilities, debt payments.

Why Cash Runway Matters

Cash runway is the single most important survival metric. It answers one question: how long can you keep the lights on?

Profitable businesses die all the time because they run out of cash. Your P&L might show profit while your bank account shows zero. Runway tells you the truth.

The Three Runway Zones

  • Critical (0-3 months): Emergency mode. Every decision should focus on extending runway immediately.
  • Warning (3-6 months): Uncomfortable but manageable. Start working on cash flow improvements now.
  • Healthy (6+ months): You have time to make strategic decisions without desperation.

What the Data Shows

According to the Bureau of Labor Statistics Business Employment Dynamics, about 20% of new businesses fail in their first year, 45% within five years, and 65% within ten years. Cash flow issues are the #1 reason businesses fail.

A JPMorgan Chase Institute study found that the median small business holds only 27 days of cash reserves—less than one month of runway. Businesses with 30+ days of reserves are significantly more likely to survive downturns.

How to Extend Runway

You have three levers:

  1. Increase revenue — faster sales, higher prices, better close rates
  2. Decrease expenses — cut non-essentials, renegotiate contracts
  3. Improve collections — get paid faster (this is often the biggest win)

Most businesses focus on #1 and #2 while ignoring #3. Collecting money you're already owed is usually faster than finding new revenue or cutting costs.

Sources