Burn Rate Calculator

Understanding your company's financial velocity relies on two core equations. First, your net burn rate is determined by finding the difference between your starting capital and ending capital over a specific period. The formula is: burn_rate = (initial_balance - final_balance) / duration, where duration is measured in months. Second, your cash runway tells you how many months of operation you have left. This is calculated using the formula: cash_runway = final_balance / burn_rate. Together, these metrics offer a clear window into corporate financial health.

Imagine a tech startup that kicks off the quarter with an initial balance of $1,200,000. Over a duration of 6 months, the company's final balance drops to $900,000 after covering all operating expenses, payroll, and overhead. First, we compute the monthly burn rate: ($1,200,000 - $900,000) / 6 = $300,000 / 6 = $50,000 per month. Next, to find out how long the remaining $900,000 will sustain the business, we calculate the cash runway: $900,000 / $50,000 = 18 months. This means the startup has a year and a half of operations left at the current spending pace.

Always calculate your burn rate on a rolling monthly basis to catch sudden spikes in expenditure early. Keep a clear distinction between gross burn (total money spent) and net burn (money lost after accounting for incoming revenue) to ensure your runway projections remain accurate. Finally, aim to maintain a minimum of 18 to 24 months of cash runway during unpredictable economic climates to secure fundraising leverage.