Understand Your Cash Runway
A Runway Calculator helps startups and small businesses answer one of the most important planning questions: how long can the company keep operating before cash runs out? That answer depends on more than a single balance in the bank. You also need to understand monthly operating costs, how much revenue offsets those costs, and whether any one-time cash events are likely to change the picture.
Why runway matters
A solid runway estimate can shape hiring plans, fundraising timing, expense cuts, and growth targets. Looking at gross burn gives you a conservative snapshot based only on spending. Looking at net burn adds revenue into the equation, which often creates a more realistic view of financial health.
A more practical way to plan
This cash runway calculator is designed to keep things simple without leaving out details that matter. You can adjust for incoming or outgoing lump-sum cash, compare gross and net burn, and quickly see runway in months or a more readable years-and-months format. For founders, operators, and finance leads, a good startup runway calculator is less about perfect forecasting and more about making smarter decisions while there’s still time to act.
FAQs
What’s the difference between gross burn and net burn runway?
Gross burn looks only at monthly operating expenses, so it shows how long your cash would last if you measured spending without offsetting revenue. Net burn takes revenue into account by subtracting monthly revenue from monthly expenses. For many startups, net burn gives a more realistic picture of runway, while gross burn can be useful when you want a more conservative view.
What happens if my revenue covers all of my expenses?
If monthly revenue is equal to or greater than monthly operating expenses, your net burn is zero or negative. In that case, a finite runway number doesn’t really make sense because the business is at breakeven or generating positive cash flow from operations. The tool should flag that clearly so you don’t end up with a confusing or mathematically misleading result.
Should I include one-time cash events in my runway estimate?
Yes, if those events are reasonably expected and likely to affect your cash position soon. A signed customer payment, a planned tax bill, a funding tranche, or a major equipment purchase can all materially change runway. Including one-time incoming and outgoing cash makes the estimate more useful for short-term planning, as long as you don’t treat uncertain cash as guaranteed.
