Enter the values used by cash runway
Estimate how many months available cash will cover a monthly net burn rate. Enter the assumptions for the same time period and currency, and check any minimum or maximum values displayed next to the input fields.
Available cash, Monthly net burn.
Change one variable so you can see the effect without mixing several assumptions.
The worked example below shows the formula and the independently rendered default-input results.
Calculate cash runway from sample inputs
These are the same starting values loaded into the interactive calculator above. The displayed results below come from the same calculation engine as the live tool.
Step 1 — Record the inputs
Step 2 — Identify the formula
Step 3 — Substitute the values
For this exact worked case, use Available cash = $120,000; Monthly net burn = $15,000. Replace named formula variables with their input values as shown below. Keep the units consistent; a percent is divided by 100 wherever the model requires a decimal rate.
Step 4 — Read the calculated answer
Rounding follows the calculator display: whole units may be rounded up when an indivisible unit is required, while other values typically show up to two decimal places. The result is conditional on the entered assumptions, not a market quotation.
How to interpret this cash runway result
Use net burn after expected collections and recurring expenses. This is a scenario estimate, not a cash forecast.
Compare the calculated unit economics with the operating target for the same month, quarter, or project. Keep fixed and variable costs separate before changing prices or capacity.
Scenario comparison
Change the revenue or sales-volume assumption while holding the cost definition steady; then repeat with higher input costs.
Assumptions and limitations
An arithmetic estimate does not account for unentered overhead, cash timing, taxes or a changing product mix.
- Available cash: Enter a finite monetary value of at least 0. Use a consistent definition across comparison cases.
- Monthly net burn: Enter a finite monetary value of at least 0. Use a consistent definition across comparison cases.
Frequently asked questions
What does this calculator include?
It uses the named inputs above and the formula shown in the worked example. No other fees, revenue streams, or external data are automatically included.
Why could my real result be different?
An arithmetic estimate does not account for unentered overhead, cash timing, taxes or a changing product mix.
How should I compare two results?
Change the revenue or sales-volume assumption while holding the cost definition steady; then repeat with higher input costs. Record the assumption that changed so a higher or lower answer is interpretable.
Cash Runway calculation method
Use net burn after expected collections and recurring expenses. This is a scenario estimate, not a cash forecast.
What this estimate does—and does not—include
This tool is designed for quick planning and comparison. For tax, accounting, legal, investment, lending, or other regulated decisions, verify the result against the rules and assumptions that apply to your situation.
CalcScoutHQ shows the calculation logic so you can check assumptions, understand the result, and reproduce the math independently when needed.
Benchmark context
Runway is only as stable as the burn forecast. One-time payments, seasonal collections, tax, financing and hiring steps can invalidate a simple cash divided by monthly burn estimate.
Decision case
A business planning two hires should model the hiring dates and downside collections rather than using the current trailing burn for the entire runway.
Calculation mistakes that change the conclusion
- Using accounting profit instead of cash movement
- Treating restricted cash as available
- Ignoring annual bills and debt payments
Evidence to review next
- Dated thirteen-week cash flow
- Downside collection scenario
- Minimum operating cash threshold