SaaS Startup Runway & Burn Rate Calculator
Know exactly how long your startup can operate before running out of cash.
Your runway appears here
Enter cash, MRR, and expenses to calculate.
Runway & Burn Rate Formula
Net Burn Rate = Monthly Expenses − MRR
Runway (months) = Cash Balance ÷ Net Burn Rate
Zero-Cash Date = Today + Runway months
Frequently Asked Questions
What is a healthy runway?
Most VCs recommend 18–24 months. Start fundraising when you have 12 months left — raising capital takes 3–6 months on average.
What counts as MRR?
Monthly Recurring Revenue includes subscription fees, retainers, and predictable monthly payments. One-time sales and non-recurring revenue should be excluded from MRR.
What is gross vs net burn rate?
Gross burn = total cash spent per month. Net burn = gross burn minus all revenue. This calculator uses net burn to account for MRR offsetting expenses.
Last reviewed: October 2024
Runway projections assume constant burn. Fundraising, seasonality, and one-time costs will change the actual figure.