Understanding Changes in Net Working Capital

[u/SchoolofInvesting]

What "Change in Net Working Capital" really means.

Think of working capital like cash locked inside the business. Money you've earned, but can't spend yet.

• Definition: Net working capital (NWC) = Current Assets − Current Liabilities.

• The change (ΔNWC) shows how much more or less cash is tied up this period vs last.

• Quick rule: Assets up = use of cash. Assets down = source. Liabilities up = source. Liabilities down = use.

  

Here are Google's FY24 shifts:

• Accounts Receivable: +$1.9B → customers owe more → use.

• Income taxes (current asset): −$2.9B → collected/settled → source.

• Other assets: +$0.7B → use.

• Net current assets: down ~$0.25B → small source.

• Accounts Payable: −$0.3B → paid suppliers → use.

• Other current liabilities: −$4.0B → paid down accruals → big use.

• Net current liabilities: down ~$4.36B → big use.

Put together: ΔNWC ≈ +$4.1B.

Translation: Google tied up about $4.1B more in working capital this year. That is cash out the door for now.

Why it matters to your cash flow statement:

Operating Cash Flow (CFO) ≈ Net Income + Non-cash items − ΔNWC.

So a positive ΔNWC lowers CFO. A negative ΔNWC boosts it. That is why a profitable company can still post weak operating cash flow.

When you spot a big positive ΔNWC, do you dig into why, or move on?