Cash Runway Calculator

What this calculator does

Cash runway estimates how long a business can keep operating at its current burn rate. It is a simple but important planning metric.

Formula used

Net burn equals monthly expenses minus monthly revenue. Runway equals cash balance divided by monthly net burn.

How to read the result

If revenue covers expenses, runway is not limited by current burn. In practice, timing, tax, debt, stock and one-off costs still matter.

Assumptions

• Uses average monthly revenue and expenses.
• Does not model working capital timing.
• Does not include fundraising or credit lines.

Sources and checks

This calculator uses a standard public formula. Where rules or thresholds can change, source links are listed on the relevant page.

Frequently asked questions