Burn Rate Calculator

How This Calculator Works

Burn Rate turns the inputs into a visible formula-based estimate. Use it to compare margin, funnel movement, CAC, revenue, cost, and scenario planning before changing pricing, spend, or operations.

Use the burn rate calculator to estimate how quickly a startup or growing business is using cash after revenue, and how many months of runway remain.

Gross burn is total monthly spending. Net burn subtracts monthly revenue from expenses, then runway divides cash by net burn.

Example Calculation

$85,000 expenses, $25,000 revenue, and $600,000 cash gives $60,000 net burn and about 10 months of runway.

When to Use This Calculator

• Estimate startup runway
• Compare hiring or cost scenarios
• Prepare investor update numbers

Practical Scenarios

• Run the calculator before changing pricing, spend, hiring, or targets so margin and cash impact are visible. Use case: Estimate startup runway.
• Compare conservative, base, and optimistic assumptions when revenue, conversion, CAC, or cost can move quickly. Start with Burn Rate, then compare the changed result with the original.
• Use related business calculators when one metric affects the wider funnel, payback, runway, or profit picture. This is especially useful when you need to prepare investor update numbers.

Tips

• Use current bookkeeping numbers
• Separate one-time costs from recurring burn
• Keep a conservative runway scenario

Common Mistakes

• Confusing gross burn with net burn
• Ignoring upcoming cost increases
• Treating runway as a fundraising guarantee
• Reading revenue as profit before fees, refunds, discounts, labor, taxes, and fulfillment costs are included.
• Mixing monthly, annual, cohort, and campaign numbers in the same calculation.

Assumptions and Limitations

The Burn Rate Calculator is strongest when revenue, cost, margin, period, and funnel assumptions all use the same reporting window. Review the formula, assumptions, and related calculators before using the result in a decision.

• Refunds, chargebacks, taxes, payment fees, labor, seasonality, and contracts can change real outcomes.
• The result is a planning estimate, not accounting, tax, legal, or professional advice.
• Verify assumptions against current records before changing prices, budgets, or strategy.

Burn Rate explains burn rate, startup runway, net burn and gross burn through decision context such as margin, period, funnel quality, and cash impact.

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