United States version
How it works
Estimate time to a chosen cash reserve under constant cash inflow and outflow, using cash rather than accounting profit.
This is the United States planning view, with monetary inputs and outputs in USD. A currency label does not establish that a tax rate, construction price, coverage rule or legal limit has been verified locally. The inputs and limitations below describe the actual scope.
Input query strings and outputs
Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.
Input query strings
5-
?cash=Unrestricted cash currently availableMoney · Required · Default: 300,000
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?minimumReserve=Cash reserve not available for normal burnMoney · Required · Default: 50,000
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?monthlyCashOut=Recurring monthly operating cash outflowMoney · Required · Default: 50,000
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?monthlyCashIn=Recurring monthly operating cash inflowMoney · Required · Default: 30,000
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?oneOffOutflow=Known immediate one-off cash outflowMoney · Required · Default: 0
Outputs
3-
usableCashCash available above reserve after one-off outflowCurrency · Currency: USD
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netBurnMonthly net cash burnCurrency · Currency: USD
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runwayMonths until selected reserve thresholdNumber · Primary output
Formula
runway = maximum(0, cash − reserve − immediate one-off outflow) ÷ positive monthly net cash burn.
Calculations retain numeric precision internally. Displayed values are rounded for readability. Quantities that must be purchased as whole units are rounded up only where the formula explicitly requires it.
Read the inputs before calculating
- Unrestricted cash currently available: Enter the quantity described by the label.
- Cash reserve not available for normal burn: Enter the quantity described by the label.
- Recurring monthly operating cash outflow: Enter the quantity described by the label.
- Recurring monthly operating cash inflow: Enter the quantity described by the label.
- Known immediate one-off cash outflow: Enter the quantity described by the label.
Reproducible worked example
The following is a fictional arithmetic example, not a local quote, a verified claimant or a market forecast. Its values are included so the formula can be checked. The form does not automatically confirm any verification checkbox.
| Input | Example value |
|---|---|
| Unrestricted cash currently available | 300,000 |
| Cash reserve not available for normal burn | 50,000 |
| Recurring monthly operating cash outflow | 50,000 |
| Recurring monthly operating cash inflow | 30,000 |
| Known immediate one-off cash outflow | 0 |
| Output | Calculated result |
|---|---|
| Cash available above reserve after one-off outflow | USD 250,000 |
| Monthly net cash burn | USD 20,000 |
| Months until selected reserve threshold | 12.5 |
Interpreting a changed assumption
Start with one complete scenario and change only one input when diagnosing a difference. Recheck units, the period of every rate, whether an amount is recurring or one-off, and whether a cost is already included elsewhere. A larger calculated benefit is not evidence that an assumption is more likely to occur.
Limitations
- Inputs are explicit management assumptions. This is not a valuation opinion, tax filing, employment-law assessment or investment recommendation.
- Receivables are not cash until collected. Financing events, seasonality, debt maturities, growth, taxes, restricted cash and uncertainty require a monthly cash-flow schedule.
Frequently asked questions
What does this Cash Burn and Runway result represent?
Estimate time to a chosen cash reserve under constant cash inflow and outflow, using cash rather than accounting profit. It applies the displayed formula to your inputs; it does not infer omitted facts.
Are the starting amounts verified United States prices or legal rules?
No. Numeric defaults are illustrative unless an input or dated reference explicitly identifies a researched component. Currency is USD; local quotes, eligibility and unsupported rules must be entered and verified separately.
What must I check before relying on the result?
Inputs are explicit management assumptions. This is not a valuation opinion, tax filing, employment-law assessment or investment recommendation.
Can I compare or share different assumptions?
Change one assumption at a time and use the browser-local project or share controls. A shared URL contains the encoded input values; do not include information you do not wish to disclose.
Sources and reference scope
- Stripe cash burn methodology — retrieved 2026-09-25. Gross versus net cash burn; our worksheet separates a protected reserve and immediate one-off cash outflow.
These references support only their stated scope. They are not evidence that every local rule or price needed by the master expansion has been loaded.