Net Burn
Net burn is the amount of cash consumed over a period after relevant realized cash inflows are subtracted from defined cash outflows.
The period, account scope, inflow policy, and sign convention should be stated. Recognized revenue and net income are not substitutes for cash received and cash consumed.
A common convention is cash outflows minus cash inflows for the same period. A positive result represents net cash consumption; a negative result represents net cash generation under that sign convention.
Use cash on both sides of the calculation
The result describes period cash consumption or generation under a stated policy.
Payments included by the burn policy
Relevant realized receipts in the same period
Positive net cash consumption
What is Net Burn?
Net burn measures net cash consumed during a defined period. Under a common convention, it subtracts relevant realized cash inflows from defined cash outflows. The measure can be monthly, quarterly, or calculated over another interval, but both sides must use the same period and scope.
The policy should name which accounts and cash movements are included. Financing proceeds, internal transfers, capital expenditure, taxes, and one-time items may require separate presentation depending on the decision. There is no benefit in hiding those choices behind a single label.
Net burn is not net income. Net income uses recognized revenue and expenses under an accounting basis and can include accruals and non-cash items. Net burn follows actual cash movement under the stated policy.
What happens when inflows exceed outflows?
Under the outflows-minus-inflows convention, the result becomes negative. That represents net cash generation for the period. Some teams reverse the sign or report net cash flow instead. State the convention so a favorable movement is not mistaken for higher cash consumption.
Net burn versus net income
Net burn is a cash measure. Net income is an accounting profit or loss measure. Customer receipts, invoice timing, accrued expenses, depreciation, financing, and asset purchases can cause the two to move differently. Reconcile rather than assuming they should match.
What should accompany net burn?
Gross burn
The defined cash outflows before relevant inflows are deducted.
Inflow composition
Customer receipts and any other cash movements included by the policy.
One-time movements
Material receipts or payments separated from the recurring pattern where useful.
Runway context
The cash position, known obligations, and assumptions used downstream.
Why it matters
Net burn shows how quickly cash is being consumed after relevant realized inflows. It can inform runway, financing timing, spending review, and the path toward net cash generation.
The measure is only as clear as its policy. Comparing net burn across companies or periods without aligning account scope, financing treatment, one-time items, and sign convention can produce a false conclusion.
Common cash convention
Net burn = Defined cash outflows − Relevant realized cash inflows
Illustrative cash calculation
A company records $95,000 of included cash outflows and $35,000 of relevant cash receipts during May. Net burn is $60,000. If the same scope instead had $105,000 of inflows, the result would be negative $10,000, representing $10,000 of net cash generation under the stated sign convention.
How RunwayCal helps
RunwayCal keeps supported recorded cash movement and current operating inputs separate from expected receipts, plans, and hypothetical scenarios. Runway Overview and connected cash-planning surfaces can place burn in the context of cash position, commitments, and timing.
RunwayCal does not assume recognized revenue has been collected or that a scenario result is current burn. The operator remains responsible for the reporting scope and reconciliation.
Common mistakes
- 1Subtracting recognized revenue rather than relevant cash received.
- 2Treating net burn and net income as the same result.
- 3Failing to state whether a positive or negative number represents cash consumption.
- 4Mixing financing transfers or one-time items into a recurring measure without explanation.
- 5Using planned or scenario inflows in a recorded net-burn result.
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