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If depreciation increases by $10, walk me through the impact on the three statements.
Assuming a 25% tax rate: Income Statement - Operating income and pre-tax income decrease by $10, net income decreases by $7.50. Cash Flow Statement - Start with lower net income (-$7.50), add back D&A (+$10), net cash increase of $2.50. Balance Sheet - PP&E decreases by $10, cash increases by $2.50, retained earnings decreases by $7.50.
Why Interviewers Ask This
This classic question tests your understanding of how a single change flows through all three financial statements. It reveals whether you truly understand the mechanics of financial statements rather than just memorizing them. Interviewers love this question because it tests accounting knowledge, logical thinking, and communication skills simultaneously.
How to Structure Your Answer
Walk through each statement systematically. State your tax rate assumption upfront. For the Income Statement, trace the impact to net income. For the Cash Flow Statement, start with net income and add back the non-cash D&A. For the Balance Sheet, show how the changes balance.
Key Points to Cover
- State your tax rate assumption (typically 25-40%)
- Depreciation is a non-cash expense
- Higher depreciation creates a tax shield
- Net income decreases by D&A × (1 - tax rate)
- Cash increases by D&A × tax rate (the tax shield)
- Balance sheet must balance: assets down by D&A, up by cash increase; equity down by net income decrease
Sample Answer
Let me walk through this assuming a 25% tax rate.
Starting with the Income Statement: Depreciation is an operating expense, so a $10 increase in depreciation reduces operating income by $10. This flows down to reduce pre-tax income by $10. With a 25% tax rate, taxes decrease by $2.50 (since we have less taxable income). Therefore, net income decreases by $7.50.
Moving to the Cash Flow Statement: We start with net income, which is down $7.50. But depreciation is a non-cash expense - we didn't actually spend $10 of cash - so we add back the $10 increase in D&A in the operating section. The net impact on cash from operations is an increase of $2.50. This is the tax shield benefit - by having higher depreciation expense, we paid $2.50 less in taxes.
On the Balance Sheet: On the assets side, PP&E decreases by $10 due to the additional accumulated depreciation. Cash increases by $2.50 from the tax shield. So total assets decrease by $7.50. On the liabilities and equity side, retained earnings decrease by $7.50 due to the lower net income. The balance sheet balances - both sides down by $7.50.
The key insight here is that depreciation provides a tax shield. Even though it's a non-cash expense, it reduces taxable income and therefore reduces actual cash paid in taxes. That's why cash increases despite the higher expense.
Common Mistakes to Avoid
- Forgetting to state the tax rate assumption
- Not remembering that D&A is a non-cash expense
- Getting confused about whether cash goes up or down
- Not showing that the balance sheet balances
Pro Tip
The formula for the cash impact of any non-cash expense is: Cash impact = Expense × Tax Rate. This is the tax shield. For depreciation, if D&A is $10 and tax rate is 25%, cash increases by $2.50.
