Burn Rate Calculator

What is Burn Rate Calculator?

Calculate average monthly burn from starting cash, ending cash, and elapsed months.

• Calculate profit, break-even points, and cash runway for small businesses, indie products, or projects.
• Compare how pricing, cost, and volume changes affect cash flow.
• Build a simple model for budgeting, inventory, hiring, or fundraising cadence.

Scope and country basis

This tool is formula-based and can be used in any country if you keep the currency and time period consistent.

The country/currency selector changes money formatting. The calculation itself depends on the business metrics, rates, and assumptions you enter.

What each input means

Starting cash

Money field, formatted in the selected currency.

Ending cash

Money field, formatted in the selected currency.

Months

Number field: enter the value that matches your scenario.

Formula and interpretation

The core formula is: Burn rate = (Starting cash - Ending cash) / Months. If a country/currency selector is available, money is formatted for that market. Policy-sensitive fields use the selected market where implemented, otherwise they remain user-entered assumptions.

Use the result for first-pass comparison, budgeting, scenario planning, and discussion prep. Before filing taxes, applying for credit, buying insurance, or investing, verify the result against local rules, contracts, and professional advice.

Key concepts

Key inputs for this tool

Burn Rate Calculator mainly depends on Starting cash, Ending cash, Months. Keep time period, currency, and definitions consistent before comparing outputs.

Fixed cost

Costs that do not move directly with volume shape break-even pressure and runway.

Variable cost

Costs incurred per unit shape contribution margin.

Cash flow

Profit does not guarantee cash safety when collection timing and inventory matter.

How to read the result

• Read the core Burn Rate Calculator output first, then the supporting metrics and scenarios rather than cherry-picking one favorable number.
• Check whether output covers fixed cost with a margin of safety.
• Stress-test revenue growth and cost increases together.
• If runway is short, focus on controllable cost and cash collection.

How to use it

1. Enter revenue, cost, price, volume, or cash balance.
2. Review profit, break-even point, runway, or cash-flow output.
3. Adjust price, cost, and volume to compare operating scenarios.
4. Before budgeting or operating decisions, verify fixed costs, taxes, inventory, and cash collection timing.

Common mistakes

• Treating profit and cash flow as the same.
• Missing labor, tax, platform fees, inventory, or refunds.
• Using average cost when marginal cost matters.

Suggested workflow

1. Build the operating baseline.
2. Test price, volume, cost, or collection changes.
3. Use results in budget, inventory, and hiring cadence.

Method and review boundary

This calculator runs a local estimate from the inputs and formula shown on this page. It does not retrieve live rules, rates, underwriting decisions, or quotes from banks, tax authorities, insurers, or other providers. Last reviewed: July 24, 2026.

For tax, lending, insurance, retirement, investment, or contract decisions, verify official guidance, the relevant agreement, and a formal quote for your location. Use this result to compare scenarios and prepare questions, not as financial, tax, investment, or legal advice.

Method notes and official sources

Average monthly burn equals user-entered starting cash minus ending cash, divided by entered months; a negative result means cash increased. The page multiplies that average by 12 for an annualized figure and applies mechanical 20% lower, 20% higher, and three-month scenarios. It does not distinguish gross from net burn or normalize financing, owner contributions, asset sales, one-time purchases, delayed collections, restricted cash, seasonality, taxes, debt principal, or unequal period lengths. A historical average is not a forecast of future burn or runway.

The page calculates locally only from user-entered values. It does not connect to ad platforms, banks, loan servicers, marketplaces, tax or labor authorities, investment accounts, or other live data sources. Results are estimates or arithmetic scenarios, not financial statements, approvals, platform fee quotes, legal classification, or financial, tax, legal, employment, credit, advertising, or investment advice. Currency selection changes formatting only and does not perform FX conversion or load local rules or current platform fees.

• Stripe: Burn-rate definitions, calculation, and runway context - Stripe
• FDIC Money Smart for Small Business: Managing Cash Flow - Federal Deposit Insurance Corporation
• SBA: Business finances, cash accounting, and cash-flow projections - U.S. Small Business Administration

Sources checked July 27, 2026. These are government, regulatory, or first-party platform references. Laws, platform metrics and fees, loan terms, reward programs, taxes, and employment rules can change; verify the applicable authority, contract, account, and latest official materials before a formal decision.

FAQ