Small Business
Cash Runway Tracker
See how many months the money actually lasts once tax, insurance and other irregular payments land where they really land.
- Delivery
- Instant download
- Purchase
- One-time payment
- Format
- Google Sheets
- Excel
- Updated
- August 2026
What this spreadsheet does
Cash divided by average burn is the figure everyone quotes, and it overstates runway whenever a large payment falls inside the period. On the sample data it says 5.9 months against a real 4.
What you can do with it
- Find the month a cash position actually breaks
- See what quarterly tax does to a runway that looked comfortable
- Decide when to act rather than discovering it late
What's included
Sheet tabs
- Instructions
- Runway
- Summary
Features
- Twelve months run in sequence, each opening from the previous closing balance
- Irregular payments entered in the month they land rather than spread across the year
- An operating floor, because runway ends where you cannot operate rather than at zero
- Both answers shown: the simple division and the calendar, with the gap between them
- Each month labelled in words against the floor, not as a signed number
- Total and largest irregular payment surfaced separately
How it works
- 1Enter opening cash and the balance below which you cannot operate
- 2Fill in cash in and regular cash out for each month
- 3Put tax and annual renewals in the Irregular column in the month they land
Who it's for
Small business owners and founders watching a cash position.
Assumes revenue holds at the level entered. A runway calculated on assumed growth measures a hope rather than a floor.
Frequently asked questions
Why not just divide cash by monthly burn?
Because averages smooth out exactly the payments that break a cash position. Tax and annual renewals arrive whole, and the division assumes they arrive in twelfths.
What is the operating floor?
The balance below which you cannot pay a wage bill or a supplier who would stop supplying you. Runway ends there, not at zero, and on the sample data that is a month earlier.
How often should I update it?
Monthly when comfortable and weekly under six months. The frequency should rise as the number falls, which is the opposite of what usually happens.
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