How do I calculate my restaurant's cash runway?

Cash runway is your current cash balance divided by your weekly net cash burn (cash out minus cash in). If you have $40,000 in cash and you are burning $5,000 per week, you have 8 weeks of runway. Include all cash outflows: payroll, rent, food, utilities, debt service, and any personal draws.

What is a dangerous level of cash runway for a restaurant?

Under 8 weeks of runway is a crisis threshold. At that point, you have very little time to negotiate with vendors, landlords, or lenders before you are forced into decisions. Under 4 weeks, the options narrow significantly and the risk of payroll tax default increases.

How can I extend my restaurant's cash runway quickly?

The fastest levers are: pause all discretionary spending immediately, negotiate extended payment terms with your top 3 food vendors, defer any non-essential equipment payments, and have an honest conversation with your landlord about temporary rent reduction. These steps can add 2 to 4 weeks of runway without requiring new revenue.

How Much Runway Does Your Restaurant Actually Have?

Your runway is the number of weeks (or months) you can keep operating at your current pace before you run out of cash. It's the single most important number a struggling restaurant owner needs to know -- and it's the one most owners avoid calculating.

Here's how to figure it out honestly.

The simple runway formula

Take your total available cash right now (bank accounts, not credit lines). Subtract what you owe in the next 7 days that you haven't paid yet. That's your real available cash.

Now look at your average weekly net cash burn: total weekly expenses minus total weekly revenue. If you're spending more than you're bringing in, that difference is your burn rate.

Divide available cash by weekly burn rate. That's your runway in weeks.

Why most owners get this wrong

Three common mistakes:

Counting credit as cash. A credit line isn't runway -- it's borrowed runway that makes the eventual crash worse.
Using good-week revenue. Use your average of the last 4-8 weeks, not your best week.
Forgetting lumpy expenses. Rent, insurance, quarterly taxes -- these hit hard on specific weeks. Average them in.

What your runway number means

12+ weeks: You have time to try things. Use it wisely -- don't coast.
6-12 weeks: You're in triage mode. Every decision should either improve revenue or cut costs. No experiments.
3-6 weeks: This is serious. You need a plan this week, not next month.
Under 3 weeks: You're in crisis. The priority is protecting your cash, your family, and your legal position. Get help today.

The personal-money trap

If your runway only exists because you're putting personal money in, that's not runway -- that's your family's money subsidizing a business that can't sustain itself. Be honest about whether the business can stand on its own. If it can't, every dollar you put in is a dollar your family loses.

What the data says about cash reserves and closure timing

According to the National Restaurant Association's 2026 State of the Industry report, 42% of independent restaurant operators reported that their business was not profitable in 2025. A separate analysis by the U.S. Small Business Administration found that the majority of small business closures happen not when revenue drops, but when cash reserves run out -- typically 8 to 12 weeks after the owner first recognizes the problem. The gap between "I know this is bad" and "I have no more options" is almost always shorter than owners expect. The operators who navigate it best are the ones who calculated their runway number early and used it to set a hard decision deadline, not a soft warning sign. According to the NRA, 60% of operators said their business conditions deteriorated in 2025 compared to 2024 -- which means the majority of independent restaurant owners are already somewhere on this timeline. The question is where.

What to do with this number

Write it down. Update it every week. Make every business decision through the lens of "does this extend my runway or shorten it?" And if your number is under 6 weeks, talk to someone who's seen this before -- because the decisions you make in the next 30 days will determine whether you land on your feet or not. The Runway Calculator on this site will give you the number in about two minutes.