How long can my business survive with the cash I have? This cash runway calculator shows monthly cash burn or surplus, estimated runway in months, and whether your cash position looks stable or tight.
How to use this calculator
- Enter current cash balance.
- Enter monthly revenue and monthly expenses.
- Add expected revenue growth and an emergency cash target.
- Review monthly burn or surplus, runway, and risk level.
Formula
Monthly cash change = Monthly revenue − Monthly expenses. Runway estimates how many months until cash runs out when expenses exceed revenue, with optional revenue growth applied month by month.
Example
A shop with $36,000 cash, $22,000 monthly revenue, and $26,000 monthly expenses burns about $4,000 per month — roughly 9 months of runway before cash runs out.
Frequently asked questions
What counts as monthly expenses?
Include rent, payroll, inventory, utilities, loan payments, and other regular bills — not one-time purchases unless they repeat.
Is this the same as profit?
No. Cash runway focuses on money in and out of your bank account. Profit on paper can differ because of timing, loans, and inventory purchases.