Working Capital for CEOs: The Cash Flow Driver EBITDA Can't Measure

EBITDA doesn't pay your bills. Cash flow does.

That's not hyperbole. It's the fundamental disconnect between what Wall Street celebrates and what actually keeps a business alive. A CEO can report record EBITDA while cash dries up because they're not managing the operational engine that converts earnings into actual money.

Working capital for CEOs is not a spreadsheet exercise. It's the difference between scaling fast and scaling recklessly. It's the difference between surviving an economic downturn and going under. And most CEOs leading $5M to $200M revenue companies have no idea how their working capital actually works.

The Three Cash Flow Drivers That Matter

Cash flow from operations depends on three levers. Pull them correctly, and you fund growth, pay debt, and build resilience. Ignore them, and you're running a business with a handbrake on.

1. Revenue Growth
2. Operating Profits
3. Working Capital Efficiency

Most CEOs obsess over the first two. They chase top-line growth and margin expansion. Both matter. Neither is enough.

Revenue Growth: Selling Smart, Not Just More

Revenue growth is the starting point, but it's a trap if you don't build it right.

Growing revenue faster than you can convert it to cash is how fast-growing companies run out of money. You've seen it happen. The startup scaling to $10M ARR that burns through funding rounds. The mid-market business hitting growth targets while the cash balance shrinks.

What drives smart revenue growth:

1. Sales volume: Increase the number of units sold to customers who pay on time and stay loyal.
2. Pricing strategy: Optimize prices for maximum value, not just volume. A 5% price increase hits bottom line harder than a 5% volume bump.

Revenue growth without working capital discipline is a liability disguised as success.

Operating Profits: Converting Revenue Into Actual Money

This is where the margin story lives. Revenue means nothing if you can't convert it into profits.

Operating profit is the cash your core business generates before financing decisions and taxes. It's pure operational performance. And it's where most scaling CEOs leave money on the table.

What drives operating profit:

1. Lower Cost of Goods Sold (COGS): Renegotiate supplier contracts, consolidate vendors, or automate production. Every percentage point of COGS reduction flows directly to operating cash.
2. Reduced SG&A: Eliminate waste in marketing spend, payroll bloat, and overhead. This isn't about cutting muscle. It's about cutting fat.

The math is simple. A company with 60% COGS and 25% SG&A generates 15% operating margin. Reduce COGS to 55% and SG&A to 20%, and you're at 25% margin on the same revenue. That's 67% more cash from operations without selling a single additional unit.

Working Capital Efficiency: Where Businesses Lose or Win

This is the lever most CEOs don't pull. It's unsexy. It doesn't show up in marketing decks or earnings calls. But it's where real cash gets trapped or freed up.

Working capital efficiency means you're not tying up cash unnecessarily in inventory, receivables, or payables. It's about the cash conversion cycle—the number of days between when you pay suppliers and when you collect from customers.

There are three operational levers:

1. Inventory Turnover (DIO—Days Inventory Outstanding): Move products faster by stocking what sells best and eliminating slow movers. A manufacturing company that reduces inventory from 90 days to 60 days frees up millions in working capital. That cash goes to R&D, sales, or debt paydown—not sitting in a warehouse.
2. Receivables Collection (DSO—Days Sales Outstanding): Collect payments faster from customers. A B2B software company with net-30 terms that actually collects in 45 days is funding customer operations instead of growing its own. Tighten this, and you reclaim weeks or months of cash.
3. Payables Management (DPO—Days Payable Outstanding): Manage payments strategically with suppliers. If you can extend payment terms from 30 days to 45 days while maintaining strong supplier relationships, you're using supplier financing to fund growth. That's leverage.

The cash conversion cycle formula: DIO + DSO - DPO = your working capital days. Lower is better. A negative number means suppliers are essentially financing your growth.

Why Working Capital Matters More Than You Think

Consider two companies with identical $10M revenue and 20% operating margins (both generating $2M in operating profit).

Same revenue. Same margins. Company B generates 50% more operating cash because it manages working capital better. That's not a spreadsheet difference. That's the difference between funding growth and taking on debt.

Scale this to a $100M business, and the gap becomes existential.

The EBITDA Fallacy

Here's the critical insight: EBITDA is a starting point, not a destination.

EBITDA is earnings before interest, taxes, depreciation, and amortization. It's designed to show operational performance stripped of financing and accounting noise. And yes, it matters for valuation and comparability.

But EBITDA doesn't tell you how much actual cash your business is generating. A business can report strong EBITDA while operating cash flow is negative because working capital is expanding faster than earnings.

This happens all the time in scaling businesses:

• A SaaS company grows revenue 50% YoY but extends payment terms to close larger deals. DSO increases. Cash conversion suffers.
• A manufacturer grows volume but inventory sits longer due to supply chain constraints. DIO increases. Cash gets trapped.
• A retailer scales aggressively but optimizes inventory incorrectly, forcing excess stock. Same story.

EBITDA might make your quarterly reports shine. It won't pay your employees, fund your next product release, or service your debt.

The CEO Action: Master Your Cash Conversion Cycle

Working capital for CEOs isn't financial theory. It's operational control. Here's what to focus on:

1. Know your cash conversion cycle number. Calculate DIO + DSO - DPO every month. Track trends. This is your working capital fingerprint.
2. Set targets for each lever. Don't just manage the total. Drive inventory turnover targets, collection benchmarks, and payables optimization separately.
3. Align operations around cash. Your inventory team, sales team, and finance team all impact working capital. Make cash conversion cycle part of their incentive structure.
4. Use growth to improve efficiency. When you raise prices or launch a new product line, pressure-test the working capital impact. Smart growth compresses your cycle.

The companies that scale past $100M without running out of cash don't have better products or salespeople. They have discipline around working capital. They know that cash flow from operations is the real measure of business health.

EBITDA gets attention. Working capital gets results.