The Short Answer: Why Does a Growing Business Run Out of Cash?
A growing business runs out of cash when revenue climbs but cash and margin are not being tracked. The three most common causes are a gap between when you book revenue and when you collect it, margin that quietly shrinks through discounts, scope creep and rising costs, and owner draws or tax strategies that are never planned for in the forecast. A simple monthly cash forecast, a margin check, and a short financial dashboard expose all three before they become a crisis.
If you have ever processed payroll and then checked your bank account just to be sure the money was there, or had the best quarter of your life and felt like you had less cash than a few months before, this post is for you. You are not bad at business. You have a blind spot, and almost every owner I work with has the same ones.
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Why Revenue Is a Vanity Metric
I am so over the social media posts that announce a seven-figure or eight-figure business. Top line revenue does not tell you whether a business is healthy. If you are in debt or negative on your balance sheet, that is what matters. Cash flow and margin are the sources of truth about the long-term health of your business.
It is also worth knowing that many of the big numbers you see online are aggregates. A founder who says they are an eight-figure business owner may be adding up ten or fifteen years of sales, not describing a single calendar year. Comparing yourself to those numbers can send you chasing the wrong things and ignoring the blind spots in your own business.
Revenue tells you whether you are growing. Cash and margin tell you whether you are growing profitably.
There are three financial blind spots I see most often. If I were a CFO or a CPA, I am sure I would list more. As an operations leader, these are the levers I pull most often, and none of them require a specialized financial analyst to find.
Blind Spot 1: Revenue vs. Cash Timing
Revenue versus cash timing is the gap between when you book revenue and when that money lands in your bank account. You can look profitable on your P&L while your cash is trapped in receivables, payment plans, monthly recurring revenue, inventory, or expenses you have already paid for the future.
This is most common in professional services and coaching businesses. You close a sale, the client agrees to a scope, a timeline and a price, and unless they paid in full on day one, they pay over time. Here is what that looks like in numbers. You close deals all month and say you generated $100,000 in revenue. But if those clients pay over ten months, you only deposited $10,000 in cash this month, and you will receive another $10,000 each month for the next nine.
Now imagine you act as though you have $100,000 in hand. You hire someone at $5,000 a month because "I just made $100,000, so we are fine." Half of your monthly cash is now spoken for by one salary. If you sell nothing else the following month, you cannot spend more than $10,000 total. Spread that spending across a ten-month horizon without new sales and you will run out of cash.
The fix is a forecast. A forecast is simply how much revenue you plan to generate each month and how much cash will actually come in each month. Add a budget on top, which is how much you plan to spend, and you can see your net profit and your real cash position. You can build this in a Google Sheet, month by month, based on the sales you have already made and the sales you expect. It tells you what you can invest in, what you can spend, and how much liquid cash you have to play with.
Blind Spot 2: Margin Dilution Nobody Is Watching
This is the most common blind spot I see. Most business owners we talk to cannot tell us their margin. On a sales call just yesterday, I asked a fitness business owner what her margin was, and the answer was "it's good." That cannot be the answer. It may be 30, 40, 50 or 60 percent in some parts of the business and 4 percent in others, and you need to know which is which.
Margin dilution happens in three ways.
Discounting. If you sell something for $100 at a 30 percent margin and then keep giving it to people for $50, that margin may drop to 10 percent or even 5 percent.
Scope creep. Your cost of goods sold is simply what it costs you to deliver the thing. For a service provider, that is labor. If you sell $100 of services based on two hours of someone's time and then ask your team to work five hours, you still have to pay for all five hours. The customer is not paying you for them. That is margin erosion, and it is how you end up in the red.
Rising costs. This is the silent killer. You start with a simple tool stack, a Gmail account and maybe an AI tool. Then you add a design subscription, then call recording, then Zoom. Before you know it, you are spending $1,000 a month on subscriptions instead of $20. Out of everything that dilutes margin, small investments that add up over time do the most damage because nobody is paying attention to them. They are also harder to diagnose and harder to fix than a discount you can see on an invoice.
This is why, after we build the cash forecast with clients, we build the budget and ask how much they are actually spending every month. Often the answer is more than they are bringing in. That leads to tough decisions about where to cut, and sometimes that includes headcount.
Blind Spot 3: The Owner's Blended Blind Spot
The third blind spot is personal draws, commingled expenses, a founder salary that is not a real line item, and tax strategies that pull cash out of the business. If these are not accounted for correctly, you cannot see your true profitability.
If you take money out of the business in a way that is not a recurring W-2 paycheck, you have to record it. It needs to show up in your P&L and in all of your financial reports. It also has to be in your forecast, because it is a real expense to the business.
Take the Augusta rule as an example, where you rent your primary residence to your business for up to 14 days. If you plan to use it, put it in the forecast. When it is time to take out that five-figure amount, you need to know there is enough cash on hand to run the business and pay yourself that way. Talk with your tax advisor about what is right for you. My point is about visibility: if the business cannot afford a strategy, you do not take it that year.
I know this one stings because nobody wants to talk about how much they pay themselves or pull out. Everybody does it, so just be honest about it and put it in plain sight so you can make informed decisions.
Be as Ruthless at the Highs as at the Lows
Businesses go through highs and contractions. At a high, you can afford crazy expenses and can pull a lot of cash out of the business. When you drop unexpectedly to a low point, that is when it matters that you managed your expenses all along. Instead of panicking and cutting like crazy, ask at every stage: Do I need to spend money on this? Does this discount make sense? Should we give this away for free? Be as ruthless with decisions at the highs as you are at the lows.
Why Smart Owners (and Their Accountants) Miss These Things
You probably did not start your business because it was a financially sound model. You started it because you had a mission, a product or a solution, and you knew people would buy it. You built it on a sales, product or innovation instinct, and that is exactly what it takes to take the leap. In fact, many people who are highly financially literate are also risk averse, so congratulations: you have the right profile to start a business. It just comes at a cost, and the finance function gets the least attention.
You may have a bookkeeper. You may have an accountant who files your taxes. But their job is not to build you a forecast and a budget. Bookkeepers and accountants report history. You care about the present and the future. That mismatch is why the blind spot remains even when you have financial professionals on your team. Nobody is telling you what is about to happen.
It is also easy to think "we are growing, so everything must be fine." Growth can mask margin problems for a very long time, and the longer it does, the harder they are to fix. If you are not watching your cash flow and making decisions about how you use it, you will eventually run out of cash. I have seen it happen over and over.
The Simple Financial Dashboard Every Business Owner Needs
You do not need a CFO or a COO to do this. You need a simple dashboard built from the reports your bookkeeper or accountant already gives you.
Monthly operating expenses (burn rate). Pull from your historical P&L what you pay in payroll, what you pay in contractors, everything else, and what you pay yourself in owner draws. That is the cost to run the business each month.
Cash runway. Your forecast of how much cash you expect to come in each month, based on sales you have already made and sales you expect. A Google Sheet by month is enough.
Accounts receivable aging. If you have people on payment plans or monthly recurring revenue, know when those payments will arrive and whether any are late.
Then build a rhythm. Every week, do a number check-in. Did we lose an account? Did someone cancel or default on a payment? Have we added any expenses? Once a month, take a deeper dive, compare the reports from your financial professionals to your forecast, and ask whether anything changed.
Then bring this mindset to your leadership team. Ask what a project actually cost to deliver, all in, and compare it to the revenue. If five people will spend six months on a project, what will it cost, and will you get a two, three or four times return on the back end? If not, is it worth doing right now?
Frequently Asked Questions
Why do I have less cash after my best month ever? Most likely because revenue and cash are on different timelines. Revenue is booked when you close a sale, but cash arrives as clients pay, often over many months. At the same time, expenses may have grown faster than revenue. A monthly cash forecast shows the gap.
What is a good profit margin for a small business? It depends on your business, so start by knowing yours. In the episode, I describe margins that can range from 30 to 60 percent in some parts of a business and 4 percent in others. Calculate margin by job, client or product so you can see where it is healthy and where it is being diluted.
What is the difference between revenue and cash flow? Revenue is the value of sales you have made. Cash flow is the money actually moving in and out of your bank account over time. You can have high revenue and poor cash flow if payments are spread out or tied up in receivables and inventory.
Does my accountant or bookkeeper handle forecasting? Usually not. Bookkeepers and accountants report history and file taxes. A forecast and budget that look forward are typically owner or operations leadership work.
Ready to See Where Your Cash Is Really Going?
If you recognized your business in this post, we can work through it together. At On Call COO, I work with founders as a fractional COO: an operator who loves running businesses, not a consultant and not a coach. On a free consultation, we will look at your current financial picture, figure out which blind spot is costing you the most, and map the simple dashboard that keeps it from surprising you again
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About the Author
Melissa Franks is the founder of On Call COO, a fractional COO services company, and the host of The Optin Podcast, where business owners go from surviving to thriving. She helps founders get out of the weeds, operate efficiently, build scalable businesses, understand their business data, and make faster decisions.
