"Walk me through what happens across the three financial statements if Revenue increases by $100." It sounds like a simple follow-up to the classic "walk me through the statements" question — but it's actually one of the better tests of whether a candidate truly understands how the Income Statement, Cash Flow Statement, and Balance Sheet connect, rather than having memorized a script.

Here's a structure you can use to answer it cleanly, every time.

Step 1: Clarify the Margin Assumption

Before doing any math, state your assumption out loud: not all of a Revenue increase becomes profit. Interviewers expect you to specify an incremental margin — for example, "let's assume the extra Revenue flows through at a 40% (0.40) EBIT margin, with the rest absorbed by additional COGS and variable costs." This shows you understand that Revenue and EBIT don't move dollar-for-dollar, which is the single most common mistake candidates make on this question.

Step 2: Flow It Through the Income Statement

With the margin assumption in hand, the Income Statement math is mechanical:

  • New EBIT = Baseline EBIT + (Increase in Revenue × Incremental Margin)
  • New Net Income = (New EBIT − Interest Expense) × (1 − Tax Rate)

Using $500 Baseline EBIT, a $100 Revenue increase at a 40% (0.40) margin, $50 of Interest Expense, and a 25% (0.25) tax rate: New EBIT = $540, and New Net Income = $367.5, up $30 from the $337.5 baseline.

Step 3: Flow It Through the Cash Flow Statement

This is where most candidates stall. The key insight: Net Income going up does not automatically mean Cash Flow from Operations goes up by the same amount. You need to ask what portion of the new Revenue was actually collected in cash this year. If, say, only 60% (0.60) was collected and 40% (0.40) remains in Accounts Receivable, that Accounts Receivable build is a use of cash that gets subtracted from Net Income when computing CFO. In this example, CFO actually falls by $10 despite Net Income rising by $30 — because the $40 Accounts Receivable increase outweighs it.

Naming this explicitly — "Net Income and cash flow diverge here because of the AR build" — is exactly the kind of connective reasoning interviewers are listening for. It's covered in more depth in Why Does Depreciation Increase Cash Flow Even Though It Lowers Net Income?, which walks through the mirror-image scenario where CFO rises while Net Income falls.

Step 4: Close the Loop on the Balance Sheet

Finally, confirm the balance sheet still balances. Cash changes by the change in CFO; Accounts Receivable rises by the uncollected portion of the new Revenue; and Retained Earnings (part of Equity) rises by the change in Net Income. In this example: Δ Cash = −$10, Δ Accounts Receivable = +$40, so Δ Assets = +$30 — which exactly matches Δ Equity = +$30, since Liabilities are unchanged. Stating this check out loud, rather than assuming it, is what separates a strong answer from an average one.

See the Full Worked Example

Every number above is worked through in complete detail — including the given data, each formula, and the full model answer — in 3-Statement Change: Revenue Increases by $100. If you haven't already built the foundation this question assumes, start with Walk Me Through the Income Statement and Connect the Three Statements — and once you're comfortable with this direction, test yourself on the reverse case in 3-Statement Change: Depreciation Increases by $100, where the same three statements move in the opposite pattern.

Common Ways Candidates Lose Points

  • Assuming the full $100 of Revenue becomes Net Income, instead of specifying and applying an incremental margin
  • Assuming Net Income and Cash Flow from Operations always move together
  • Forgetting to mention Accounts Receivable at all when discussing the cash flow impact
  • Skipping the balance sheet check at the end, or asserting it balances without actually verifying it