Your Cash Runway Is the Number That Ends Companies
"We're profitable. So why can't I make payroll?"
Why do profitable small businesses run out of cash?
Because your P&L and your bank account run on different calendars.
You invoice in March. You get paid in May. Payroll runs every other Friday no matter what. Rent hits on the 1st. Your tax payment doesn't care that a big customer is slow.
I lived this, scaling a trucking company to $6M and 27 trucks in under a year. Revenue was moving fast. On paper, it looked great. But drivers and fuel got paid now. Customers paid us later. And every truck we added cost us cash before it earned a dollar.
Growth doesn't fix a cash problem. Growth feeds it.
The week I built a weekly cash view, I stopped guessing. Nothing fancy. A spreadsheet, one column per week. For the first time, I could see the tight week before I was standing in it.
That's the whole discipline. Look ahead, so payroll is a decision and not a surprise.
What does the data say about small business cash?
✳️ 27 days. In a JPMorgan Chase Institute study of nearly 600,000 small businesses (2016), the median firm held just 27 cash buffer days. About a month of cushion.
✳️ 77%. In the Federal Reserve's 2026 Small Business Credit Survey report on employer firms, 77% said rising costs, tariff-related costs, or both were a financial challenge.
✳️ 56%. Same report: 56% of firms sought financing to meet operating expenses.
➡️ Costs are rising, cushions are thin, and a lot of owners are borrowing just to keep the lights on. That's exactly when guessing gets expensive.
How do you build a 13-week cash flow forecast?
Thirteen weeks is one quarter. Far enough to see trouble coming. Close enough to stay accurate.
1️⃣ Start with the real bank balance. Not profit. Not what the software says you made. What's in the account today.
2️⃣ List cash coming in by the week it lands. Not the week you invoice. Be honest about your slow payers.
3️⃣ List cash going out by the week it leaves. Payroll first. Then taxes, rent, insurance, loan payments, and your own pay.
4️⃣ Work out the ending balance for every week. Find the lowest one. That's your pinch point.
5️⃣ Set a floor and a trigger. Pick a minimum balance. Decide now what you'll do when a week dips under it: chase invoices, delay a purchase, pause a hire.
6️⃣ Update it every Monday. Twenty minutes. Roll it forward one week and compare what you predicted to what happened.
Now runway is one line. Say you have $30,000 in the bank and you burn $6,000 a week more than you collect. That's five weeks. Now you know.
✅ To Do
✅ Read the forecast yourself, even if your bookkeeper builds it
✅ Fund payroll first in every week. Payroll is a promise to people
✅ Run every hire, raise, and equipment purchase through the forecast before you say yes
✅ Keep business and personal cash separate so your runway number is real
✅ Share the floor number with whoever approves spending, so they know when to slow down
❌ Don't Do
❌ Treat profit as cash
❌ Forecast on the invoice date instead of the day the money will actually land
❌ Wait for the bank balance to tell you there's a problem
❌ Assume a big month fixes a thin one. Growth drains cash first
❌ Hide a tight week from your team. They feel it anyway
What this looks like as you scale
Creator ($0–$100K): You are the payroll. Runway here means how many months you can afford to keep building. Separate business and personal accounts now, before the mix-up costs you.
Hustler ($100K–$250K): Your first hire turns payroll into a fixed weekly promise. Revenue is lumpy. Costs are not. This is where "profitable but broke" starts.
Operator ($250K–$500K): More people, more vendors, real cost pressure. Someone else may keep the books, but you still own the number. The leadership shift: stop reacting to the bank balance and start deciding from the forecast.
Leader ($500K–$1M): The forecast has to leave your head. Your first manager should be able to read it and know when to slow spending. Watching the balance got you here. It won't get you there.
Coaches and consultants, same math. A slow quarter with retainer clients is still a cash gap.
Reflective questions
If your biggest customer paid 30 days late starting today, which week would you miss payroll? Do you know?
When did you last look 13 weeks ahead instead of back at last month?
Quick Answers
What is cash runway for a small business? Cash runway is how many weeks or months your business can cover its expenses with the cash it has now. Divide cash on hand by your average weekly net burn. It's the survival number every owner should know.
Why is my business profitable but I have no cash? Profit counts revenue when you earn it. Cash counts it when it arrives. Slow-paying customers, payroll timing, inventory, taxes, loan payments, and owner draws can all drain the bank before the profit shows up.
How do I build a 13-week cash flow forecast? Start with your real bank balance. List expected cash in and cash out for each of the next 13 weeks and track the ending balance. It's a Financial Acumen discipline that matters most in the Creator, Hustler, and Operator phases of the 8 Phases of Scale, and My Biz Coaches helps owners build one.
Want to see your own 13 weeks?
✳️ Free coaching session. Book one at MyBizCoaches.com. We'll walk through your cash runway together and show you where your next tight week is hiding. That's how My Biz Coaches works: real numbers, clear direction.
✳️ Become a Certified My Biz Coach. Build a business coaching practice that helps owners do exactly this. Start at MyBizCoaches.com.
✳️ Start on your own. Grab the Survival Guide or take the free Biz Navigator at MyBizNavigator.com.
To Your Success,
Eric T. Whitmoyer, Business Growth Strategist
Founder & CEO at MyBizCoaches.com
Host of The Biz Coach Show
From Startup to Exit, We're There for Your Biggest Decisions
P.S. If you're serious about taking your business to the next level, then you may find value in getting a copy of our 2026 Business Survival Guide — full of strategies, tactics, and solutions to help move your business forward faster this year.
Because the difference between ordinary and extraordinary isn't luck; it's the information you act on.
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