FoundersPath Playbook

Runway Calculator

Two jobs, one page. First, how many months you actually have, across three honest scenarios. Then, if it's tight, the levers that buy you more, quantified.

FOUNDER WORKSHEET
The Operator
Runway series
full balance; runway is measured to zero
01

Your monthly burn

Burn is not one number. Split it into cost that stays fixed and cost that moves with revenue. Your variable cost is a percentage of cash in; what is left of that revenue is your gross margin. Getting this split right is what makes the "if deals slip" scenario honest: when revenue falls, variable cost falls with it, so you lose margin, not the whole dollar.

LineMonthly amount
Cash in — recurring monthly revenue
Variable cost — % of cash in (the cost that scales with revenue)
gross margin is whatever is left
enter a percent, e.g. 40
Fixed costs — spend that does not move with revenue
Payroll & contractors
Rent, facilities, insurance
Software & tools
Everything else fixed
Gross margin
Gross profit / mo  cash in × gross margin
Total fixed / mo
Net monthly burn  fixed − gross profit
02

Your runway, three ways

The single number lies. These three tell the truth: what you burn today, what one bad quarter costs you, and what your own levers buy back. Each card carries its own signal, so you can watch a healthy Scenario A turn red when deals slip, then move back to green once you pull levers. Runway here is months to zero cash, from your full bank balance.

Scenario inputValue
If the next deals slip — monthly revenue at risk of not landing
the tool drops only the margin on this, since variable cost falls with it

Scenario A

Current burn

Your runway at today's net burn, no changes.

Scenario B

If the deals slip

Runway if expected revenue doesn't land on time.

Scenario C

With your levers

Runway once you pull the levers set in section 03.

Set inputs
Enter your cash, burn, and the revenue at risk to see where you stand.
03

Extension levers

If the number above is tighter than you'd like, this is where you buy time. Check the levers you're willing to pull and enter the monthly cash each one frees. The summary shows how much burn you remove and how many months it adds.

The best time to fill this in is before you need it. Decide the moves while you're calm, so that when a trigger fires you act from a plan, not from panic.
CategoryLeverMonthly cash freedFirst action when you pull it
Levers engaged0
Monthly burn removed
New net monthly burn
Runway before levers
Runway after levers
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“The balance is a lagging indicator. Your behavior is the leading one. This sheet turns the second one into a number.”