Monthly Burn Rate Calculator

Last updated July 2, 2026

Burn rate is a term borrowed from startup finance, but it applies perfectly to any household navigating a period of reduced income. Your monthly burn rate is simply the total you spend each month — every dollar that leaves your accounts, including fixed costs, variable spending, minimum debt payments, and anything else. Most people significantly underestimate this number because they track fixed bills but not the dozens of smaller irregular expenses that add up: subscriptions, Amazon purchases, dining, gas, personal care, and the annual bills that hit unexpectedly. The only reliable way to calculate burn rate is to look at actual bank and credit card statements for the past three months and average them.

During job loss, burn rate becomes the single most important financial number you have. It determines how long your runway lasts, how much unemployment benefits must cover, and the urgency of finding replacement income. Many households discover after their first burn rate calculation that they're spending $400 to $600 more per month than they thought — which doesn't matter much when income is flowing but becomes critical when it stops. The first response to a high burn rate is to separate fixed from variable expenses: fixed costs like rent and loan payments require negotiation or restructuring, while variable costs like dining, streaming, and discretionary shopping can be cut immediately with no long-term consequence.

Your monthly burn rate is the number your financial survival actually depends on during a job loss. Calculate it from actual spending — not what you think you spend — and then sort every expense into "fixed and unavoidable," "fixed but negotiable," and "variable and cuttable." That categorization tells you exactly where the adjustments have to come from.