Gross Burn

A startup pays $400,000 for staff, $80,000 in rent and $120,000 for other operations in a month, so its illustrative gross burn is $600,000. If customers pay $350,000 during the month, the operating cash shortfall of $250,000 is a separate net-burn calculation.

Choose the period, since monthly burn is common, and compare like months or clearly annualise a run rate. Define operations by stating whether cash purchases of equipment, taxes or one-off restructuring costs are included, because different teams may use different scopes.

Use cash payments rather than accruals, since an invoice recorded as an expense but not yet paid may affect accrual profit without affecting current cash burn. Payroll cash such as wages, benefits and employer contributions can make up a large share of recurring outflow, and vendor spend on cloud, rent, contractors, marketing and insurance may each contribute even if paid through different accounts.

Exclude incoming revenue from gross burn, because that is the point of distinguishing gross from net and a large sales month does not make gross outflows disappear. Handle financing separately, since investor funding and loans do not reduce operating gross burn; they increase available cash or debt.

Beware credit cards, because a vendor purchase and later card settlement must not be counted twice, so decide whether the metric uses transaction or cash-settlement date. Track prepaid contracts, because an annual licence paid upfront creates a large cash outflow in one month even if the accounting expense is spread over a year, and report unusual items such as a legal bill or office move separately so they do not distort the recurring spending trend.

Look at fixed versus variable spending, since rent may be stable while cloud or delivery spending can rise with customers, and both belong in the total under the chosen scope. Review by owner to find controllable costs, allocating shared invoices consistently, and compare actual cash spend to budget, explaining material differences by timing and activity.

Model runway with net cash flow, because dividing cash by gross burn ignores receipts and may overstate the speed at which cash runs out, while blind net-burn division can also mislead when revenue, staffing and payment timing change, so forecast monthly cash when the stakes are high. Watch commitments, since a contract signed today can create future burn that is not yet in cash paid, and check accounts, because restricted cash or separate entities mean a group total may not be available to fund every operating payment.

Use a consistent currency, translating foreign payments on a stated basis, and reconcile bank and payment records to the reported figure. Pair the number with outcomes, since higher gross burn might support more customers or faster product work, so examine unit cost and value rather than assuming it is bad, and identify levers, because reducing a tool licence may be quick while changes to staff or facilities carry larger consequences.

A rising total can reflect inflation, investment or inefficiency, so break it down before reacting. Puzzle distinguishes gross burn as operating cash out without customer cash receipts, while HiBob presents gross and net burn as separate startup measures, and these are management metrics rather than fixed accounting line items; for an owner, gross burn says how much the operation consumes each month before receipts help cover it, and it should be used with net burn and a cash forecast to make spending choices.