Glossary · Fundraising

Burn Rate

Burn rate is the monthly amount of cash a startup consumes before it becomes profitable.

Quick definition

Burn rate is the monthly amount of cash a startup consumes before it becomes profitable.

Definition

Gross burn is total monthly cash outflow. Net burn is outflow minus inflow. Investors typically track net burn because it drives runway. Burn rate is the most important number to know cold as a founder — it dictates urgency for revenue, hiring pace, and fundraising timing.

Formula

Net Burn = Monthly Cash Out − Monthly Cash In

Worked example

A startup with $80k/mo expenses and $30k/mo revenue has a net burn of $50k/mo. With $600k in the bank, its runway is 12 months.

Common mistakes

  • Only tracking gross burn — ignoring revenue paints an artificially scary picture.
  • Not modeling burn scenarios for the next 6/12/18 months against hiring plans.

Frequently asked questions

Not if it's buying growth you can quantify and if runway is long enough to reach the next milestone. High burn without a clear return is dangerous.

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