Burn rate is the amount of money you spend in your startup at a given period (usually, a month). It includes total expenses: the cost of goods sold, R&D, sales and marketing, and general and administrative (saasholic.com link)
Investopedia: How Burn Rate Is a Key Factor in a Company’s Sustainability (investopedia.com link)
Cover art by: https://www.toptal.com/finance/financial-forecasting/startup-burn-rate
If you would like to expand on the topic as a guest post, know of more resources/posts/essays/etc that we should share here or simply spotted an error, please get in touch with us!