Working capital is one of the most frequently mentioned metrics when you’re talking PE or M&A deals.
Failure happens when companies run out of working capital at exactly the wrong moment. (Hint: this isn’t just because of “working capital”).
Growth is expensive. And if you don’t understand how working capital actually behaves inside your business, it will quietly cap how fast you can scale or worse, push you into a liquidity crisis while revenue looks “healthy.”
Let’s fix that.
What Working Capital Really Tells You
Working capital measures how much short-term financial flexibility your business has to operate, absorb shocks, and fund growth.
At its core, it answers a simple question:
Do you have enough short-term resources to cover your short-term obligations and still keep moving forward?
The standard formula is straightforward:
Working Capital = Current Assets – Current Liabilities
The formula seems straightforward right?
Working capital lives on the balance sheet and the effect of working capital show up in operations:
- Can you buy inventory ahead of demand?
- Can you hire before revenue fully ramps?
- Can you survive a slow-paying customer without tapping a credit line?
- Can you invest in systems without stressing payroll?
If the answer to those questions is “maybe,” you have a working capital problem, whether the balance sheet says so or not.
What Actually Counts as Working Capital
Working capital is built from the parts of your business that turn into cash, or consume cash, in the near term.
Current assets typically include:
- Cash
- Accounts receivable
- Inventory
- Prepaid expenses
- Short-term investments
These represent future cash inflows, at least in theory.
Current liabilities typically include:
- Accounts payable
- Accrued expenses
- Short-term debt
- Deferred revenue
- Taxes payable
These represent cash outflows you can’t avoid.
The danger is assuming all current assets are equally useful. They’re not.
A dollar of cash is not the same as a dollar of 120-day AR. Inventory that turns every 20 days behaves very differently than inventory that hasn’t moved in six months. Working capital looks clean on paper long before it works cleanly in reality.
Why Sales and Profits Lie About Cash
This is where operators get burned.
Revenue, expenses, and profit are recorded when they’re earned or incurred, not when cash moves. Working capital exists because cash timing rarely matches accounting timing.
You can be profitable and still cash-starved.
You can be growing and still illiquid.
You can “hit the numbers” and still miss payroll.
Working capital bridges that gap.
It’s the buffer that lets you operate between when revenue is booked and when cash actually lands, between when expenses are incurred and when they’re paid. Without enough of it, growth amplifies risk instead of reducing it.
The Working Capital Ratio aka Current Ratio (and Why Context Matters)
A common way to assess working capital health is the current ratio:
Current Ratio = Current Assets ÷ Current Liabilities
It gives a snapshot of liquidity at a point in time.
As a rule of thumb:
- Below 1.0 means you can’t cover short-term obligations without new cash
- 1.5–2.0 is generally healthy for most mid-market businesses
- Above 2.0 often signals inefficiency, not strength
Too low and you’re exposed.
Too high and you’re tying up cash in places it shouldn’t be.
But ratios without context are dangerous.
The working capital ratio or current ratio has limitations depending on the context within which it is calculated. Seasonality, billing models, inventory cycles, and payment terms all distort this snapshot. That’s why strong finance teams don’t look at working capital in isolation. They track trends, compare it to revenue growth, and tie it directly to the cash conversion cycle or even the acid test (quick ratio) instead.
Your quick ratio excludes your inventory from the working capital ratio:
Quick Ratio = (current assets – inventory)/current liabilities
Quick Tip: only include your most collectible AR in the quick ratio. Let’s assume anything over 90 days may not be collectible and could cause you to overestimate cash flow.
When Working Capital Lies to You
There are situations where working capital looks fine and absolutely isn’t.
Accounts receivable bloat
Professional services firms are notorious for this. Slow collections inflate assets while payroll hits every two weeks. The balance sheet says “liquid.” The bank account says otherwise.
Inventory illusions
Manufacturers and distributors often look well-capitalized because inventory is counted at cost. But if it’s slow-moving, obsolete, or misaligned with demand, it won’t convert to cash when you need it.
Deferred problems
Short-term obligations don’t always show up immediately. Payroll timing, bonus accruals, tax liabilities, and seasonal expenses can lag reality, creating a false sense of security.
This is why lenders and CFOs often look past basic working capital and focus on quality of working capital, not just quantity.
Can Negative Working Capital Ever Be Healthy?
Yes. But only in specific business models.
Companies with fast cash collection and favorable payment terms can operate with little or even negative working capital and still be healthy.
Think:
- Ecommerce businesses collecting cash at checkout
- Grocery stores and restaurants paid immediately by customers
- Subscription models billing upfront
In these cases, cash comes in before expenses go out. The business is effectively using customer money to fund operations.
But this only works if the cash conversion cycle is tight and predictable. Lose control of fulfillment, margins, or supplier terms, and negative working capital turns from advantage to liability very quickly.
Here’s a client exmaple:
One of our clients was carrying a lot of long-term debt from many prior years of losing money. Around this time, they shifted their model from selling via wholesalers to selling direct to customers via e-commerce. This allowed our client to collect 100% of the cash upfront when the sale was made, even before they fulfilled their orders. And because they had 30-day terms with their suppliers, we changed their payment priority to use the cash they had on hand to pay off long-term loans before paying their current outstanding bills. We could do this knowing their cash conversion cycle (CCC) was fast enough to generate more cash before the terms came due on their short-term debt.
5 Steps to Improve Working Capital
Improving working capital starts with operational discipline. Here’s where real leverage comes from:
- Shorten the cash conversion cycle
Faster invoicing, upfront deposits, progress billing, tighter collections. Cash speed matters more than revenue growth. - Align inventory to demand
Build and stock what turns, not what feels safe. Idle inventory is cash in disguise. - Restructure debt intelligently
Move short-term obligations into long-term facilities where possible. Match cash outflows to cash generation. - Control fixed costs before scaling
Growth magnifies inefficiency. Fix cost structure before adding volume. - Use data, not gut feel
Weekly cash forecasts and rolling liquidity models catch problems before they show up in financial statements.
Working capital improves when operations improve. Period.
eXpand your insight
Working capital determines how resilient your business is under pressure and how aggressively you can pursue growth without betting the company. Used well, it gives you optionality. Used poorly, it strangles momentum.
The mistake most founders make is treating working capital as a static metric instead of a dynamic operational outcome.
Get in touch to get insight into your working capital and cash conversion cycle to get your business ready for investors.
