Why Runway Matters

For any early-stage startup, cash is oxygen. Your Runway is the amount of time you have before your bank balance hits zero, assuming your revenue and expenses stay constant. Knowing this number is critical for making hiring decisions, planning pivots, and timing your next fundraising round.

How to Calculate Your Burn Rate

Before you find your runway, you need to know your Burn Rate. This is simply the net amount of cash you are losing each month.

Formula:

Monthly Burn = Monthly Expenses - Monthly Revenue

If your expenses are $20,000 and your revenue is $5,000, your burn rate is $15,000 per month.

Calculating Your Runway

Once you have your burn rate, calculating your runway is straightforward:

Formula:

Runway (Months) = Total Cash on Hand / Monthly Burn Rate

In the example above, if you have $150,000 in the bank, your runway is 10 months ($150,000 / $15,000).

Strategies to Extend Runway

1. Increase Revenue: Focus on high-margin products or services that can be delivered quickly.
2. Reduce Fixed Costs: Re-evaluate expensive office space or underutilized software subscriptions.
3. Operational Efficiency: Automate repetitive tasks to stay lean.

Plan Your Growth

Never wait until you have 1 month of runway left to start fundraising. Most founders start their next round when they still have 6-9 months of "buffer" to ensure they aren't negotiating from a position of weakness.

Try our Startup Runway Calculator to model your own survival timeline.