CFA Level I Exam · Working Capital and Liquidity

Working Capital Management Basics for CFA Level I

Updated 7 October 2026 · Fact-checked

Working capital management is the control of a firm's current assets and current liabilities so it can meet short-term obligations at the lowest cost. Net working capital = current assets − current liabilities. Good management balances liquidity (paying bills on time) against profitability (not tying cash up in idle assets).

Understand Working Capital Management Basics

Working capital is the money a firm uses in day-to-day operations. It is the cash, receivables and inventory the firm holds, less the short-term obligations it owes, such as payables and short-term debt.

The main components are current assets (cash and marketable securities, accounts receivable, inventory) and current liabilities (accounts payable, accrued expenses, short-term debt). Net working capital is current assets minus current liabilities. Some analysts use operating working capital, which leaves out cash and short-term debt.

Why does it matter? A firm that runs short of cash cannot pay suppliers or staff, even if it is profitable on paper. So you need liquidity. But cash, receivables and inventory earn little or nothing, so holding too much of them lowers returns. This is the trade-off: more liquidity usually means lower profitability, and the reverse.

Liquidity comes from two kinds of sources. Primary sources are the ordinary, day-to-day sources: cash on hand, short-term funds such as marketable securities, cash flow from operations, and trade credit and bank credit relationships. Secondary sources are used when primary sources fall short. They include liquidating assets, negotiating debt contracts, filing for bankruptcy protection and reorganisation. Secondary sources can change the firm's operations or capital structure and signal financial trouble, so they are costly.

The goal of working capital management is to keep enough liquidity to meet obligations, while investing excess cash well and borrowing as cheaply as possible. Strong management reduces the need for outside financing and can reduce financing costs.

Key formulas to remember

Net working capital: Net working capital = Current assets − Current liabilities; A positive value means current assets exceed short-term obligations. It is not the same as cash.
Operating working capital: Operating working capital = (Receivables + Inventory) − (Payables + Accruals); Excludes cash, securities and short-term debt. Definitions vary, so follow the question's wording.
Current ratio: Current ratio = Current assets ÷ Current liabilities; A basic liquidity measure. Higher means more cover, not necessarily better management.
Liquidity trade-off: More liquidity → lower expected return; less liquidity → higher return but more risk; The core idea behind working capital decisions.

How to solve Working Capital Management Basics questions

Use this method for definition, classification and liquidity-source questions.

1Read the stem and identify what is asked: a calculation, a classification, or a judgement on liquidity.
2If a calculation, list current assets and current liabilities separately. Check which items count (for example, long-term debt is excluded).
3Apply the formula and keep the sign and units in view.
4For source-of-liquidity questions, ask: is this an ordinary, day-to-day source (primary) or a costly fallback that may change operations or signal distress (secondary)?
5For judgement questions, weigh the liquidity-versus-profitability trade-off. Idle cash is safe but earns little.
6Eliminate options that contradict the trade-off, misclassify the item or reflect a typical calculation error, then choose the remaining option.

Quickest way: Primary or secondary in ten seconds

When to use it: Use when an option names a source of liquidity and you must classify it.

Ask: would a healthy firm use this every day? If yes, it is primary (cash, operating cash flow, bank lines, trade credit).
Ask: does it mean selling assets, renegotiating debt or bankruptcy? If yes, it is secondary.
Check that the other two options fit the opposite class, then choose.

Common mistakes in Working Capital Management Basics

Treating net working capital as the same as cash.
The word 'capital' suggests money in hand.
Fix: Remember it is current assets minus current liabilities. It includes receivables and inventory, which are not cash.
Including long-term debt or fixed assets in the calculation.
Students scan the balance sheet quickly.
Fix: Only current items count. Use the current portion of long-term debt, not the full amount.
Thinking more working capital is always better.
Liquidity sounds safe.
Fix: Excess current assets earn low returns and lower profitability. Look for the balance.
Classifying a bank line of credit as a secondary source.
It involves borrowing, which feels like distress.
Fix: Established bank credit relationships are primary sources. Secondary sources are asset sales, debt renegotiation and bankruptcy.
Assuming a profitable firm cannot have a liquidity problem.
Profit and cash are confused.
Fix: Profit is accrual-based. A firm can be profitable yet short of cash if receivables or inventory build up.

Worked examples

Example 1

A company reports cash €120,000, receivables €310,000, inventory €270,000, payables €240,000, accrued expenses €60,000, short-term debt €100,000 and long-term debt €500,000. What is net working capital? A) €200,000 B) €300,000 C) €700,000

Show the solution

Current assets = 120,000 + 310,000 + 270,000 = €700,000.
Current liabilities = 240,000 + 60,000 + 100,000 = €400,000. Long-term debt is excluded.
Net working capital = 700,000 − 400,000 = €300,000.
Option C is just current assets. Option A wrongly subtracts long-term debt, giving 700,000 − 500,000 = 200,000.

Answer: B) €300,000

Example 2

Which of the following is most likely a secondary source of liquidity? A) Cash flow from operations B) Renegotiating debt contracts C) Drawing on a long-standing bank credit line

Show the solution

Primary sources are ordinary, day-to-day: operating cash flow and bank credit relationships.
Option A is operating cash flow, so it is primary.
Option C is an established credit line, so it is primary.
Option B is a fallback used when primary sources fall short. It can change the firm's capital structure and signal financial stress, so it is secondary.

Answer: B) Renegotiating debt contracts

Exam tips

Questions often test the classification of liquidity sources. Memorise the primary list and treat asset sales, debt renegotiation and bankruptcy as secondary.
Always list only current items before subtracting. Wrong options are often built from including long-term debt.
Expect judgement items on the liquidity versus profitability trade-off. Excess cash lowers return; too little raises risk.
There is no penalty for wrong answers. If unsure, eliminate the two options that contradict the trade-off and guess.

Practice questions from Working Capital and Liquidity

Working Capital Management Basics in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Working Capital Management Basics: frequently asked questions

What is working capital management in corporate finance?

It is the management of current assets and current liabilities so the firm can meet short-term obligations at low cost. It balances liquidity against profitability.

What is the difference between primary and secondary sources of liquidity?

Primary sources are ordinary, low-cost sources such as cash, operating cash flow and bank credit. Secondary sources, such as selling assets or renegotiating debt, are used when primary sources fall short and can signal distress.

Can a profitable company run out of liquidity?

Yes. Profit is measured on an accrual basis, so cash can be tied up in receivables and inventory. The firm may then struggle to pay bills even while reporting profit.

Do I need a calculator for this topic?

Rarely. Net working capital is simple subtraction, so you can do it by hand. Save the TI BA II Plus or HP 12C for time-value questions.