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THE FEUTEX TOOLKIT

Operating Cash Runway with Reserve

Estimate runway after one-time commitments and a minimum cash reserve.

Finance workspace● Runs in your browser
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02 Your result
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FormulaUsable cash = Math.max(0,v.cash-v.reserve-v.one_time) ; Net burn = v.monthly_outflow-v.monthly_inflow ; Runway months = Math.max(0,v.cash-v.reserve-v.one_time)/(v.monthly_outflow-v.monthly_inflow)
Sources and model references

How to use this tool

  1. Enter your own assumptions using a consistent currency and period.
  2. Review the scenario outputs and compare alternative inputs.
  3. Check the stated model limits before using the result in an operating plan.

Try this example

{
  "cash": 200000,
  "reserve": 50000,
  "one_time": 20000,
  "monthly_outflow": 40000,
  "monthly_inflow": 30000
}

Accuracy and scope

Deterministic planning scenario; inputs are assumptions, not forecasts. Excludes taxes, financing, legal requirements and costs not explicitly entered. Source explains the underlying planning framework; this specific scenario arithmetic is original.

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This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.