FP&A Interview Questions: Three-Statement Model + DCF Defense (2026)

Three-Statement Fluency in 3 Minutes

You should be able to walk an interviewer through the links between income statement, balance sheet, and cash flow statement without notes. Net income flows from the income statement to retained earnings on the balance sheet and to operating cash flow. Depreciation is subtracted from net income on the income statement but added back on the cash flow statement. Working capital changes hit cash flow. If you cannot do this in 3 minutes, fix it before any interview.

Sample Three-Statement Questions

• ●"Depreciation goes up by $10. Walk me through all 3 statements."
• ●"We pay down $100 of debt. Walk me through the impact."
• ●"AR increases by $50. What happens on all 3 statements?"
• ●"We issue $1,000 of equity and use it to buy $1,000 of inventory. Walk me through."

Unit Economics Defense

CFOs care about per-customer unit economics more than aggregate revenue. You should be able to define CAC, LTV, payback period, and gross margin at the unit level, and defend the inputs.

• ●CAC: Fully loaded sales and marketing spend divided by net new paying customers.
• ●LTV: Average revenue per customer times gross margin times average lifetime.
• ●Payback period: Months to recover CAC from gross profit.
• ●Healthy SaaS benchmarks: Payback under 15 months, LTV:CAC above 3, gross margin above 70%.

Variance Analysis Drill

Q3 revenue came in 8% below plan. CFO asks you to walk variance. Strong answer: decompose by volume, price, mix, and currency. Each has different implications. A volume miss with stable price suggests demand issues. A price miss with stable volume suggests competitive pressure or discounting. A currency miss is often not actionable but must be called out separately.

The "Revenue Slips 15%" Scenario

CFO hands you an updated forecast where revenue is down 15%. You are asked to re-size the capital raise in real time. Strong approach: reprice burn, extend runway to maintain 18 months of cash, rework the milestones plan to show proof points that justify the round, then state the new raise size. A 4-score candidate does this in 10 minutes and presents one alternative: a convertible bridge.

DCF Assumption Challenges

• ●"Why did you use a 12% WACC? Defend each component."
• ●"Your terminal growth rate is 3%. Why not 2% or 4%?"
• ●"What is the sensitivity of valuation to a 100bps change in WACC?"
• ●"Why does your model assume margin expansion? Defend with benchmarks."

Behavioral Questions for FP&A

• ●"Tell me about a time you pushed back on a business partner's forecast."
• ●"Describe a variance that surprised you. What did you do?"
• ●"Walk me through a moment you changed a board-level decision with a financial analysis."

Practice the Live CFO Round

ZeroPitch runs a live CFO round with three-statement walkthroughs, variance analysis probes, and DCF challenges. Scored across fluency, accuracy, and synthesis.