Why Accounting Questions Dominate IB Interviews
Accounting is the language of finance, and investment banking interviewers test it relentlessly. Every model you build as an analyst -- whether it is a DCF, an LBO, or a merger model -- starts with the three financial statements. If you cannot confidently explain how a transaction flows through the income statement, balance sheet, and cash flow statement, you will struggle to build credibility with your interviewer.
The good news is that accounting questions in IB interviews are predictable. The same 30-40 questions come up repeatedly across firms. Master them, and you will handle the technical portion of your interview with ease. Below, we walk through the 30 most common accounting questions, grouped by theme, with clear and concise answers.
Three-Statement Linkages (Questions 1-8)
These questions test whether you understand how the three financial statements connect. This is the single most important accounting concept for investment banking.
1. Walk me through the three financial statements.
The income statement shows a company's revenue, expenses, and net income over a period. The balance sheet shows assets, liabilities, and shareholders' equity at a point in time. The cash flow statement reconciles net income to actual cash generated by adjusting for non-cash items and changes in working capital. Net income from the income statement flows into retained earnings on the balance sheet and is the starting point of the cash flow statement. The ending cash balance on the cash flow statement equals the cash line on the balance sheet.
2. If you could only use one financial statement to evaluate a company, which would you choose?
The cash flow statement, because it shows the actual cash a company generates, strips out non-cash accounting items, and reveals whether the business can fund operations, invest, and service debt. Revenue and earnings can be manipulated through accounting choices, but cash flow is harder to distort.
3. How do the three statements link together?
Net income from the income statement flows to the top of the cash flow statement and into retained earnings on the balance sheet. Changes in balance sheet items (accounts receivable, inventory, accounts payable) appear in the operating section of the cash flow statement as working capital adjustments. Capital expenditures reduce cash on the cash flow statement and increase PP&E on the balance sheet. Debt issuance or repayment appears in the financing section of the cash flow statement and updates the debt balance on the balance sheet. The ending cash balance ties back to the balance sheet.
4. A company makes a $100 cash purchase of equipment. Walk me through the impact on all three statements.
Income statement: no immediate impact (the equipment is capitalized, not expensed). Cash flow statement: cash flow from investing decreases by $100. Balance sheet: cash decreases by $100, PP&E increases by $100. The balance sheet remains in balance.
5. A company runs depreciation of $10. Walk me through the three statements.
Income statement: operating expenses increase by $10, reducing pre-tax income by $10. Assuming a 25% tax rate, net income decreases by $7.50. Cash flow statement: net income is down $7.50, but depreciation of $10 is added back as a non-cash charge, so cash flow from operations increases by $2.50. Balance sheet: PP&E decreases by $10 (accumulated depreciation), cash increases by $2.50, and retained earnings decrease by $7.50. The tax liability decreases by $2.50. Assets decrease by $7.50, and liabilities plus equity decrease by $7.50. The balance sheet balances.
6. What happens when inventory increases by $50?
On the balance sheet, inventory (an asset) increases by $50. If the company paid cash, cash decreases by $50 on the balance sheet and on the cash flow statement (working capital change: increase in inventory is a use of cash). The income statement is not affected until the inventory is sold and recognized as COGS.
7. How does issuing $200 in debt affect the statements?
Income statement: no immediate impact (interest expense will affect future periods). Cash flow statement: cash flow from financing increases by $200. Balance sheet: cash increases by $200, and long-term debt increases by $200. The balance sheet balances.
8. A company pays off $100 of debt with cash. Walk me through it.
Income statement: no impact. Cash flow statement: cash flow from financing decreases by $100. Balance sheet: cash decreases by $100, long-term debt decreases by $100. Assets and liabilities both decrease by the same amount.
Depreciation and Amortization (Questions 9-13)
Depreciation and amortization questions test your understanding of non-cash charges and their tax implications.
9. What is depreciation and why does it matter?
Depreciation is the systematic allocation of a tangible asset's cost over its useful life. It matters because it is a non-cash expense that reduces taxable income (creating a tax shield) without actually consuming cash. This is why depreciation is added back on the cash flow statement.
10. What is the difference between depreciation and amortization?
Depreciation applies to tangible assets (buildings, equipment, vehicles). Amortization applies to intangible assets (patents, trademarks, customer relationships). Both spread the cost of an asset over its useful life, but they apply to different asset categories.
11. How does an increase in depreciation affect free cash flow?
Higher depreciation reduces taxable income, which lowers taxes paid. Since depreciation is a non-cash charge, it is added back on the cash flow statement. The net effect is that higher depreciation increases free cash flow by the amount of the tax savings (depreciation increase multiplied by the tax rate).
12. What are the main depreciation methods?
Straight-line depreciation allocates the same expense each year. Accelerated methods like double-declining balance or MACRS front-load depreciation expense, resulting in larger tax shields in early years. The choice of method affects the timing of expenses and tax payments but not the total amount depreciated over the asset's life.
13. A company changes its depreciation method from accelerated to straight-line. What happens?
In the near term, depreciation expense decreases, pre-tax income increases, and tax payments increase. Net income goes up, but cash flow actually decreases because the company pays more in taxes. Over the full life of the asset, total depreciation is the same -- the change only affects timing.
Revenue Recognition and Deferred Revenue (Questions 14-18)
These questions test your understanding of accrual accounting, which is a frequent stumbling point for candidates.
14. What is deferred revenue?
Deferred revenue is cash received from customers for goods or services that have not yet been delivered. It appears as a liability on the balance sheet because the company owes the customer either the product/service or a refund. As the company delivers, deferred revenue decreases and revenue is recognized on the income statement.
15. A company receives $120 upfront for a 12-month subscription. How do you account for this?
At the time of payment: cash increases by $120 on the balance sheet, and deferred revenue (a liability) increases by $120. Each month, the company recognizes $10 of revenue on the income statement and reduces deferred revenue by $10 on the balance sheet. After 12 months, all deferred revenue has been recognized.
16. Why is an increase in deferred revenue a source of cash?
When deferred revenue increases, the company has collected cash from customers without yet recognizing it as revenue on the income statement. The cash has been received, but net income does not reflect it yet. On the cash flow statement, the increase in deferred revenue is added to net income as a working capital adjustment, reflecting the fact that cash inflows exceeded recognized revenue.
17. What is the difference between deferred revenue and accounts receivable?
They are essentially opposites. Deferred revenue means the company has received cash but has not yet earned it (liability). Accounts receivable means the company has recognized revenue but has not yet received cash (asset). Both are consequences of accrual accounting and the mismatch between cash flows and revenue recognition.
18. A company recognizes $50 of previously deferred revenue. Walk me through the statements.
Income statement: revenue increases by $50, and assuming a 25% tax rate, net income increases by $37.50. Cash flow statement: net income increases by $37.50, but the decrease in deferred revenue is subtracted as a working capital adjustment ($50), so cash flow from operations decreases by $12.50. Balance sheet: deferred revenue decreases by $50, retained earnings increase by $37.50, taxes payable increase by $12.50. The balance sheet balances.
Working Capital (Questions 19-24)
Working capital questions test whether you understand the operational cash flow dynamics of a business.
19. What is working capital?
Working capital is current assets minus current liabilities. It measures a company's short-term liquidity and operational efficiency. The main components are accounts receivable, inventory, and accounts payable. A positive working capital means the company has enough short-term assets to cover short-term obligations.
20. Why does an increase in accounts receivable reduce cash flow?
An increase in accounts receivable means the company has recognized revenue (boosting net income) but has not yet collected cash from customers. On the cash flow statement, this increase is subtracted from net income because the revenue was earned but not received in cash.
21. Why does an increase in accounts payable increase cash flow?
An increase in accounts payable means the company has recorded an expense (reducing net income) but has not yet paid cash to suppliers. On the cash flow statement, this increase is added back to net income because the expense was recorded but cash was not actually spent.
22. A company's receivables increase by $20, inventory increases by $15, and payables increase by $10. What is the net working capital impact on cash flow?
The net impact on cash flow is negative $25. Increases in receivables (-$20) and inventory (-$15) are uses of cash, totaling -$35. The increase in payables (+$10) is a source of cash. Net effect: -$35 + $10 = -$25.
23. What does negative working capital mean? Is it bad?
Negative working capital means current liabilities exceed current assets. It is not necessarily bad -- companies like Amazon and Walmart often operate with negative working capital because they collect cash from customers before paying suppliers. This is actually a sign of strong bargaining power and efficient cash management. However, for other businesses, negative working capital could signal liquidity problems.
24. How does a seasonal business affect working capital analysis?
Seasonal businesses experience significant swings in working capital throughout the year. Inventory builds ahead of peak selling periods, receivables spike during and after peak sales, and payables fluctuate with purchasing patterns. When analyzing these businesses, you should look at working capital at the same point in the annual cycle (year-over-year comparisons) rather than quarter-over-quarter.
Balance Sheet and Equity (Questions 25-28)
25. What is shareholders' equity and what are its components?
Shareholders' equity represents the residual value of assets after subtracting liabilities. Its main components are common stock (par value), additional paid-in capital (APIC), retained earnings, accumulated other comprehensive income (AOCI), and treasury stock (a contra-equity account for repurchased shares).
26. How does a stock buyback affect the three statements?
Income statement: no direct impact, though future EPS increases due to fewer shares outstanding. Cash flow statement: cash flow from financing decreases by the buyback amount. Balance sheet: cash decreases, and shareholders' equity decreases (treasury stock increases as a contra-equity item). Total assets and total equity both decrease by the same amount.
27. What is the difference between goodwill and other intangible assets?
Goodwill arises only from acquisitions -- it is the excess of the purchase price over the fair value of identifiable net assets acquired. Other intangible assets (patents, customer relationships, trade names) can be either acquired or internally developed. Goodwill is not amortized but is tested annually for impairment. Many other intangible assets are amortized over their useful lives.
28. A company writes down goodwill by $200. Walk me through the impact.
Income statement: a $200 impairment charge reduces pre-tax income by $200. Assuming a 25% tax rate, net income decreases by $150. Cash flow statement: net income is down $150, but the impairment is a non-cash charge, so $200 is added back. Cash from operations increases by $50 (the tax savings). Balance sheet: goodwill decreases by $200 on the asset side. Cash increases by $50, retained earnings decrease by $150, and tax liabilities decrease by $50. Both sides balance.
Advanced Accounting Questions (Questions 29-30)
29. What is the difference between capitalizing and expensing a cost?
Capitalizing a cost means recording it as an asset on the balance sheet and gradually expensing it over time through depreciation or amortization. Expensing a cost means recognizing the full amount immediately on the income statement. Capitalizing results in higher near-term net income and higher assets, while expensing results in lower near-term net income. Over the total life of the asset, the cumulative expense is the same.
30. How do operating leases differ from finance leases under current accounting standards?
Under ASC 842, both operating and finance leases result in a right-of-use asset and a lease liability on the balance sheet. The key difference is in the income statement treatment. Finance leases record amortization of the right-of-use asset and interest expense separately, resulting in higher total expense in early years (front-loaded). Operating leases record a single straight-line lease expense, resulting in even expense recognition over the lease term. On the cash flow statement, finance lease payments are split between operating (interest) and financing (principal), while operating lease payments are typically all in operating cash flow.
How to Study These Questions Effectively
Memorizing answers is not enough. Interviewers often twist the standard questions with different numbers, tax rates, or scenarios. To truly prepare:
- Practice walking through the statements out loud. You need to trace each transaction through all three statements fluidly.
- Always check that the balance sheet balances. If your answer results in an imbalanced balance sheet, something is wrong.
- Know your tax rate mechanics. Many candidates forget that non-cash charges still affect taxes. Always account for the tax impact.
- Understand the "why" behind each entry. If you understand the principle, you can handle any variation.
- Time yourself. In an interview, you need to answer these questions in 60-90 seconds. Practice until the answers are automatic.
Start Drilling These Concepts Today
Accounting questions are the foundation of IB technical interviews. The 30 questions above cover the core topics you will encounter at every bank, from bulge brackets to elite boutiques. The key is not just knowing the answers but being able to explain them clearly and confidently under pressure.
Use Finance FlashForge to drill these concepts with our income statement, balance sheet, cash flow statement, and working capital flashcards. Practice every day, and these questions will become second nature by the time you walk into your interview.
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