DCF interview questions

a good answer hits

1. 01States that a company's value is the present value of its future cash flows.
2. 02Explains that a single perpetuity formula is insufficient because growth and discount rates change over time.
3. 03Mentions splitting the valuation into an explicit forecast period with changing assumptions and a terminal period with stable assumptions.
4. 04States that all projected cash flows must be discounted back to the present.

common mistakes

• Failing to explain why a simple perpetuity formula cannot be used for the entire valuation.
• Omitting the concept of discounting future cash flows back to the present.

a good answer hits

1. 01defines the discount rate as an investor's opportunity cost or targeted annualized rate of return
2. 02states that it reflects the return expected from investing in other opportunities with a similar risk profile
3. 03explains that a higher discount rate indicates both greater potential returns and higher risk

common mistakes

• defining the discount rate purely as an interest rate without mentioning opportunity cost
• failing to link the discount rate to investments of a similar risk profile

a good answer hits

1. 01states that risk and potential return are directly correlated
2. 02explains that a company with high potential returns carries a higher risk of failure, requiring a higher discount rate to compensate investors
3. 03states that the higher discount rate appropriately reduces the present value of highly uncertain future cash flows

common mistakes

• agreeing with the premise that higher potential returns should lead to a lower discount rate
• failing to explain that the discount rate must reflect the uncertainty and risk of the cash flows

a good answer hits

1. 01A DCF is most useful for large, mature companies with stable and predictable cash flows, as your long-term assumptions are more likely to be accurate.
2. 02It is less useful for early-stage startups with highly unpredictable cash flows, or for financial institutions like banks and insurance firms.
3. 03For these financial firms, debt and operating assets serve fundamentally different roles, making a standard DCF inappropriate.

common mistakes

• Recommending a DCF for a bank because it generates cash flow.
• Failing to say why financial institutions are different, namely that debt is an operating input rather than financing.
• Treating unpredictability of cash flow as a reason to lengthen the forecast rather than to change methodology.

a good answer hits

1. 01States the Gordon Growth formula as Next Year's Cash Flow / (Discount Rate - Growth Rate).
2. 02Grows the $100 forward one year to $105 before applying the formula, because the $100 given is this year's cash flow.
3. 03Calculates the value as $2,100 from $105 / (10% - 5%).
4. 04States that a higher growth rate increases the value, while a higher discount rate decreases it.

common mistakes

• Using this year's $100 in the numerator and answering $2,000, without growing the cash flow forward one period.
• Using the wrong formula, such as adding the rates instead of subtracting them in the denominator.
• Failing to explain how changes in the growth rate or discount rate affect the final valuation.

a good answer hits

1. 01states that money today is worth more than money in the future due to its potential earning capacity
2. 02explains that funds available now can be invested to earn a return over time
3. 03clarifies that while inflation erodes purchasing power, the core concept of TVM focuses on the opportunity cost of investment rather than price level changes

common mistakes

• incorrectly stating that inflation is the primary or sole reason for the time value of money
• failing to mention the concept of earning capacity or opportunity cost of capital

a good answer hits

1. 01defines Unlevered FCF as NOPAT + D&A +/- Change in Working Capital - CapEx
2. 02defines Levered FCF as Net Income + D&A +/- Change in Working Capital - CapEx - Debt Repayments + Debt Issuances
3. 03states that Unlevered FCF is used in DCF valuations to evaluate a company independent of its capital structure
4. 04explains that standard FCF is used for standalone analysis and debt repayment capacity, while Levered FCF can be used in a Levered DCF

common mistakes

• using Net Income instead of NOPAT as the starting point for Unlevered FCF
• failing to include debt repayments or issuances in the definition of Levered FCF

a good answer hits

1. 01States that this treatment is correct because Unlevered FCF must completely ignore the company's capital structure
2. 02Explains that you cannot exclude interest expense while keeping the tax benefits associated with that interest
3. 03States that tax savings from interest expense do not exist if there is no interest expense

common mistakes

• Arguing that the tax shield should be added back to Unlevered FCF to reflect actual taxes paid
• Confusing Unlevered FCF with Levered FCF tax treatment

a good answer hits

1. 01States that FCFF is cash available to all capital providers (debt and equity) while FCFE is cash available only to equity shareholders.
2. 02Explains that FCFF is calculated starting from EBIT or EBITDA, whereas FCFE accounts for interest payments and net debt issuance or repayment.
3. 03States that FCFF is discounted using WACC to find Enterprise Value.
4. 04States that FCFE is discounted using the Cost of Equity to find Equity Value.

common mistakes

• Discounting FCFE using WACC instead of the Cost of Equity.
• Failing to adjust for interest payments or debt principal repayments when defining FCFE.

a good answer hits

1. 01states that if an expense is subtracted in FCF projections, its corresponding liability must be excluded from the EV to Equity Value bridge
2. 02states that if an expense is excluded from FCF projections, its corresponding liability must be subtracted in the bridge
3. 03uses interest expense and outstanding debt as an example of this relationship

common mistakes

• double-counting by both subtracting the expense in FCF and subtracting the liability in the bridge
• failing to connect the treatment of interest expense in Unlevered FCF to the subtraction of debt in the bridge

a good answer hits

1. 01Unlevered Free Cash Flow is calculated by taking EBIT, multiplying by (1 - Tax Rate), adding back non-cash charges, and then subtracting both the change in operating assets and liabilities and capital expenditures.
2. 02This metric represents cash available to all investors because it excludes interest and mandatory debt repayments.
3. 03Levered Free Cash Flow is calculated by taking Net Income, adding back non-cash charges, and subtracting the change in operating assets and liabilities, capital expenditures, and mandatory debt repayments.
4. 04This metric represents cash available only to equity investors because interest and debt obligations have already been paid.

common mistakes

• Subtracting interest from Unlevered Free Cash Flow.
• Starting Levered Free Cash Flow from EBIT rather than Net Income.
• Forgetting mandatory debt repayments in the Levered calculation.
• Applying the tax rate to EBITDA rather than to EBIT when building the unlevered figure.

a good answer hits

1. 01states that stock-based compensation should not be added back when calculating Free Cash Flow for valuation purposes
2. 02explains that stock-based compensation creates additional shares and dilutes existing shareholders
3. 03identifies stock-based compensation as a real economic expense despite being non-cash on the cash flow statement

common mistakes

• arguing that it should be added back simply because it is a non-cash expense on the cash flow statement
• failing to mention the dilutive effect on existing shareholders

a good answer hits

1. 01States the formula starting with EBIT: EBIT * (1 - Tax Rate) + D&A +/- Change in Working Capital - CapEx
2. 02States the formula starting with EBITDA: (EBITDA - D&A) * (1 - Tax Rate) + D&A +/- Change in Working Capital - CapEx
3. 03States the formula starting with CFO: CFO - (Net Interest Expense and other non-operating items) * (1 - Tax Rate) - CapEx
4. 04Explains that in the CFO method, Net Interest Expense must be reversed to remove capital structure effects

common mistakes

• Forgetting to tax-shield the interest expense adjustment when starting from Cash Flow from Operations (CFO)
• Forgetting to subtract CapEx when starting from CFO

a good answer hits

1. 01states that Unlevered Free Cash Flow represents core, recurring cash flows available to all investor groups
2. 02explains that Change in Working Capital is included because it is a recurring, core operational item available to all investors
3. 03explains that Net Interest Expense is excluded because it is a financing cost that only benefits debt holders

common mistakes

• confusing unlevered and levered free cash flow definitions
• stating that interest expense is excluded because it is non-recurring

a good answer hits

1. 01Subtracts COGS and Operating Expenses from Revenue to find EBIT.
2. 02Multiplies EBIT by (1 - Tax Rate) to calculate NOPAT.
3. 03Adds back Depreciation & Amortization.
4. 04Adjusts for the Change in Working Capital.
5. 05Subtracts Capital Expenditures.

common mistakes

• Forgetting to tax-shield EBIT by failing to multiply by (1 - Tax Rate).
• Subtracting Depreciation & Amortization instead of adding it back.
• Using Net Income instead of EBIT as the starting point without adjusting for interest.

a good answer hits

1. 01States that a decrease in EBITDA implies a drop in revenue or an increase in COGS or operating expenses.
2. 02Explains that both Levered and Unlevered FCF will generally decrease because the underlying operating income flows into both metrics.
3. 03Notes that FCF figures could theoretically remain unchanged if offset by changes in D&A, Working Capital, or CapEx.

common mistakes

• Claiming that only Levered FCF decreases while Unlevered FCF remains unchanged.
• Failing to mention that other cash flow adjustments like CapEx or Working Capital could theoretically offset the EBITDA decline.

a good answer hits

1. 01Defines Unlevered FCF calculation starting with NOPAT, adding back D&A, and adjusting for working capital and CapEx.
2. 02Defines Levered FCF calculation starting with Net Income, adding back D&A, adjusting for working capital, subtracting CapEx, and factoring in net debt changes.
3. 03States that Unlevered FCF is used in DCF valuations to evaluate a business independently of its capital structure.
4. 04States that Levered FCF is used in specialized contexts such as REITs.

common mistakes

• Forgetting to include net debt changes in the Levered FCF calculation.
• Confusing which cash flow metric is used for capital-structure-independent valuation.

a good answer hits

1. 01states that WACC is the expected annualized return an investor would receive if they invested proportionally across the entire capital structure
2. 02mentions that the capital structure includes debt, equity, and preferred stock
3. 03explains that for the company, it is the blended cost of funding operations using all capital sources
4. 04notes that it assumes maintaining the company's target capital structure

common mistakes

• forgetting to mention that it represents a blended rate across all capital sources
• failing to explain the investor's perspective of investing proportionally across the capital structure

a good answer hits

1. 01States that equity investors take on higher risk because they are last in line to be paid in a liquidation.
2. 02Explains that equity investors demand higher expected returns to compensate for this higher risk.
3. 03Mentions that interest payments on debt are tax-deductible, which lowers the effective cost of debt.
4. 04Notes that dividends and equity dilution do not offer tax benefits to the company.

common mistakes

• Failing to mention the tax-deductibility of interest payments.
• Failing to mention the seniority of debt over equity in a liquidation scenario.

a good answer hits

1. 01States that the tax rate only affects these metrics if the company has debt in its capital structure.
2. 02Explains that a higher tax rate reduces the Cost of Debt because of the after-tax interest expense formula.
3. 03Explains that a higher tax rate reduces the Cost of Equity because debt becomes less risky to equity investors.
4. 04Explains that a higher tax rate reduces the overall WACC.
5. 05States that despite a lower WACC, the implied DCF value decreases because the higher tax rate reduces Free Cash Flow and Terminal Value, which outweighs the lower discount rate.

common mistakes

• Forgetting that the tax rate has no impact if the company has no debt.
• Assuming a lower WACC automatically increases the DCF implied value without considering the reduction in Free Cash Flows.

a good answer hits

1. 01States that Cost of Debt is estimated using the Yield to Maturity of outstanding bonds or by adding a default spread to the Risk-Free Rate.
2. 02States that Cost of Preferred Stock is calculated as the preferred dividend yield.
3. 03Explains that these costs represent the rates the company would pay to issue new debt or preferred shares.
4. 04Explicitly notes that preferred dividends are not tax-deductible and therefore not adjusted for taxes in WACC.

common mistakes

• Applying a tax shield to the Cost of Preferred Stock.
• Using the coupon rate of outstanding debt instead of the Yield to Maturity.

a good answer hits

1. 01States the formula for Unlevered Beta as Levered Beta divided by [1 + (Debt/Equity * (1 - Tax Rate)) + (Preferred/Equity)].
2. 02States the formula for Levered Beta as Unlevered Beta multiplied by [1 + (Debt/Equity * (1 - Tax Rate)) + (Preferred/Equity)].
3. 03Explains that unlevering removes the financial risk of debt to isolate the core business risk.
4. 04Explains that relevering adjusts the risk profile to match the target company's capital structure.

common mistakes

• Forgetting to adjust the debt-to-equity ratio for the tax shield.
• Confusing the numerator and denominator when switching between unlevering and relevering.
• Omitting preferred stock from the formula when it is present in the capital structure.

a good answer hits

1. 01states the CAPM formula: Cost of Equity = Risk-Free Rate + (Levered Beta * Equity Risk Premium)
2. 02defines the Risk-Free Rate as being based on long-term government bonds
3. 03defines the Equity Risk Premium as the market's excess return over the risk-free rate
4. 04specifies that Levered Beta measures the stock's volatility relative to the market, accounting for both business and financial leverage risks

common mistakes

• using Unlevered Beta instead of Levered Beta in the CAPM formula
• confusing the Equity Risk Premium with the overall expected market return

a good answer hits

1. 01States the WACC formula including Cost of Equity, Cost of Debt adjusted for taxes, and Cost of Preferred Stock weighted by their capital structure percentages.
2. 02Explains that Unlevered Free Cash Flow represents cash flows available to all capital providers.
3. 03States that WACC must be used because it reflects the cost of all capital sources in the capital structure.

common mistakes

• Forgetting to tax-shield the cost of debt in the WACC formula.
• Pairing Unlevered Free Cash Flow with the Cost of Equity instead of WACC.

a good answer hits

1. 01States that both Cost of Equity and WACC should be higher for the $500 million company, assuming identical capital structure percentages.
2. 02Explains that smaller companies have higher potential returns and higher risk, which increases the Cost of Equity.
3. 03Explains that smaller companies have a higher risk of default, which increases their Cost of Debt.
4. 04Concludes that because individual costs of capital are higher, the overall WACC will also be higher.

common mistakes

• Stating that the larger company has a higher WACC due to its size.
• Forgetting to mention that the Cost of Debt is also higher for smaller companies due to default risk.

a good answer hits

1. 01states that Beta measures a stock's volatility and risk relative to the overall market
2. 02explains what a Beta of 1.0 or 2.0 means in terms of market movement
3. 03distinguishes between Unlevered Beta, which reflects intrinsic business risk, and Levered Beta, which incorporates both business and financial risk from debt

common mistakes

• failing to distinguish between levered and unlevered beta
• stating that a beta of 2.0 means the stock is twice as risky without explaining it in relation to market volatility

a good answer hits

1. 01States that the company with zero debt will generally have a higher WACC.
2. 02Explains that debt is cheaper than equity because interest payments are tax-deductible.
3. 03Explains that debt is cheaper because debt holders have a senior claim on assets in bankruptcy.
4. 04Mentions that as debt increases, the cost of both debt and equity will rise due to financial risk, leading to an optimal capital structure.

common mistakes

• Incorrectly stating that the company with 50% debt has a higher WACC because debt is risky.
• Failing to mention the tax shield or seniority of debt as reasons why debt is cheaper than equity.

a good answer hits

1. 01States that WACC stands for Weighted Average Cost of Capital.
2. 02Explains that WACC is the average rate of return a company is expected to pay to all its security holders.
3. 03Mentions multiplying the cost of each capital component (equity and debt) by its proportional weight in the capital structure.
4. 04States that the cost of debt must be adjusted downward to account for the tax deductibility of interest.
5. 05Mentions that WACC is used as the discount rate in a Discounted Cash Flow (DCF) analysis.

common mistakes

• Forgetting to adjust the cost of debt for tax deductibility.
• Failing to explain that WACC represents the cost to all capital providers, not just equity holders.

a good answer hits

1. 01states that Cost of Equity represents the average annualized return equity investors expect to earn over the long term
2. 02mentions that these returns are realized through dividends and stock price appreciation
3. 03explains that for the company, it represents the cost of funding operations by issuing shares
4. 04notes that this cost includes potential dividend payments and the dilution of existing shareholders

common mistakes

• confusing the cost of equity with the cost of debt
• defining it purely mathematically via CAPM without explaining the underlying economic intuition

a good answer hits

1. 01Identifies the Multiples Method as applying a valuation multiple to a final-year metric.
2. 02Identifies the Gordon Growth Method as projecting cash flows growing at a constant rate into perpetuity.
3. 03States that the Gordon Growth Method is theoretically superior because long-term growth must align with or lag behind GDP growth.
4. 04Notes that the Multiples Method is frequently used in practice due to its simplicity.

common mistakes

• Failing to explain why Gordon Growth is theoretically preferred due to GDP growth constraints.
• Assuming the Multiples Method is always theoretically superior.

a good answer hits

1. 01States that the value is calculated by dividing the annual cash flow by the discount rate.
2. 02Explains that if the required return is 10%, the value is $1,000 ($100 / 0.10).
3. 03Explains that if the required return is 20%, the value drops to $500 ($100 / 0.20).

common mistakes

• Forgetting to state that the valuation depends entirely on the required discount rate.
• Confusing a perpetuity with a finite annuity calculation.

a good answer hits

1. 01states that Terminal Value is calculated by dividing the terminal period's starting cash flow by the difference between the Discount Rate and the Terminal Growth Rate
2. 02explains that a higher terminal growth rate or starting cash flow increases the company's value by boosting the numerator
3. 03explains that a higher Discount Rate reduces the company's value by increasing the denominator

common mistakes

• confusing the numerator and denominator relationships
• failing to explain how the discount rate affects the terminal value mathematically

a good answer hits

1. 01States that you should calculate the implied terminal multiple if using the Gordon Growth Method.
2. 02States that you should calculate the implied terminal growth rate if using the Multiples Method.
3. 03Mentions comparing the implied terminal growth rate to long-term GDP growth.
4. 04Mentions adjusting initial assumptions if the implied metrics are unrealistic.

common mistakes

• Failing to cross-check the two terminal value methods against each other.
• Accepting an implied terminal growth rate that exceeds long-term GDP growth.

a good answer hits

1. 01states that multiples from Public Comps are preferred over Precedent Transactions
2. 02explains that Precedent Transactions include a control premium which should not be reflected in a standalone valuation
3. 03states that the selected multiple should be cross-checked to ensure it implies a reasonable Terminal Growth Rate

common mistakes

• suggesting Precedent Transactions are better because they represent actual acquisitions
• forgetting to mention the control premium as the reason to avoid Precedent Transactions

a good answer hits

1. 01States clearly that a negative terminal growth rate can make sense.
2. 02Explains that it is appropriate for companies in permanent decline.
3. 03Provides an example such as a biotech firm with an expiring patent and no pipeline.
4. 04Notes that a negative growth rate does not make the company worthless today, but results in a lower valuation.

common mistakes

• Asserting that terminal growth rates must always be positive or match GDP.
• Confusing a negative growth rate with a negative terminal value or negative cash flows.

a good answer hits

1. 01States that you project Free Cash Flows over a 5-to-10-year period.
2. 02Mentions discounting cash flows using a discount rate, typically WACC.
3. 03Explains estimating Terminal Value using either the Multiples or Gordon Growth method.
4. 04States that Terminal Value must be discounted back to the present.
5. 05Mentions summing the present values to find the Implied Enterprise Value and adjusting for cash and debt to get Implied Equity Value.

common mistakes

• Forgetting to discount the Terminal Value back to the present.
• Confusing Enterprise Value and Equity Value at the end of the calculation.

a good answer hits

1. 01states that the Terminal Growth Rate should be conservative and stay below the country's long-term GDP growth rate
2. 02mentions that the rate should be in line with macroeconomic indicators like inflation
3. 03provides a realistic range (e.g., 1% to 2% for a developed country with 3% GDP growth)

common mistakes

• suggesting a terminal growth rate that exceeds the long-term GDP growth rate of the country
• failing to tie the growth rate to macroeconomic indicators like inflation

a good answer hits

1. 01States that the answer depends on whether Terminal Value is included in the Implied Value.
2. 02Explains that if considering only the 10-year cash flows, Company A has a higher value due to the time value of money.
3. 03Explains that Company B will have a much higher Terminal Value because its Year 10 Free Cash Flow is much higher.
4. 04Concludes that if Implied Value includes both the PV of FCF and PV of Terminal Value, Company B will have the higher Implied Value.

common mistakes

• Instantly choosing Company A solely based on the time value of money of the discrete period, forgetting the Terminal Value.
• Failing to connect Year 10 cash flow to the magnitude of the Terminal Value.

a good answer hits

1. 01States that the simplest approach is to treat lease expenses as standard operating cash expenses.
2. 02Mentions deducting lease expenses when calculating Free Cash Flow.
3. 03States that lease liabilities can be ignored in the WACC calculation under this simple approach.
4. 04States that lease liabilities can be ignored in the Enterprise Value to Equity Value bridge under this simple approach.
5. 05Mentions that treating leases as debt adds complexity with minimal impact on valuation.

common mistakes

• Double-counting leases by deducting lease expenses in FCF and also subtracting lease liabilities in the bridge.
• Failing to align the treatment of leases in WACC with their treatment in FCF.

a good answer hits

1. 01States that companies generate cash flow continuously throughout the year rather than in a single lump sum at the end.
2. 02Explains that discounting uses mid-year intervals instead of full-year intervals.
3. 03States that the mid-year convention results in a higher implied valuation.
4. 04Explains that the higher valuation is because cash received earlier in the year is discounted less heavily.

common mistakes

• Stating that the mid-year convention decreases the implied valuation.
• Failing to explain the real-world cash flow generation pattern of continuous generation.

a good answer hits

1. 01States that a stub period is used when valuing a company partway through its fiscal year.
2. 02Explains that it accounts only for the remaining future cash flows of the current year, excluding already realized past cash flows.
3. 03Explains that discount periods must be adjusted to fractional periods.
4. 04Explains that subsequent full years are discounted using fractional increments.

common mistakes

• Including the full year's cash flow in the projection even when valuing the company mid-year.
• Failing to adjust the discount periods for subsequent years after a stub period.

a good answer hits

1. 01States that a Levered DCF uses Levered Free Cash Flow, which subtracts interest expenses and factors in net debt activity.
2. 02States that the discount rate used is the Cost of Equity instead of WACC.
3. 03Mentions that Terminal Value is estimated using equity-based multiples like P/E.
4. 04Explains that the final sum directly yields the Implied Equity Value rather than Enterprise Value.

common mistakes

• Using WACC as the discount rate for Levered Free Cash Flows.
• Attempting to subtract debt from the final output of a Levered DCF to find Equity Value.

a good answer hits

1. 01States clearly that the two methods will not yield the exact same results.
2. 02Explains that Unlevered DCF accounts for capital structure indirectly through WACC.
3. 03Explains that Levered DCF directly factors debt service into the cash flows and uses Cost of Equity.

common mistakes

• Claiming that the two methods will yield identical results in practice.
• Failing to explain how the treatment of debt service differs between the two cash flow definitions.

a good answer hits

1. 01Projects Unlevered Free Cash Flow over an explicit 5-to-10-year period and defines it as EBIT * (1 - Tax Rate) + D&A +/- Change in Working Capital - CapEx.
2. 02Discounts those cash flows at WACC, and can define WACC as the weighted cost of equity, debt (after tax) and preferred.
3. 03Calculates a Terminal Value using either the exit multiple method or the Gordon Growth formula, Final Year FCF * (1 + g) / (WACC - g).
4. 04Discounts the Terminal Value back at the same rate and adds it to the PV of the explicit cash flows to get Implied Enterprise Value.
5. 05Bridges from Implied Enterprise Value to Implied Equity Value and to a per-share value using the diluted share count.
6. 06Explains that the mid-year convention discounts at 0.5, 1.5, 2.5 years because cash is generated evenly through the year rather than in a lump sum at year end, which raises the implied value.

common mistakes

• Discounting Unlevered Free Cash Flow at the Cost of Equity, or Levered Free Cash Flow at WACC, instead of matching the cash flow to its discount rate.
• Subtracting interest expense from Unlevered Free Cash Flow.
• Stopping at Implied Enterprise Value and never bridging to Equity Value or per-share value.
• Quoting a single point value rather than a sensitised range.
• Failing to explain the economic rationale that cash is generated continuously through the year.
• Confusing the mid-year convention with discounting by a full year but starting six months late.

a good answer hits

1. 01States that it depends on the type of Cash Flow and the Discount Rate used.
2. 02Explains that using Unlevered Free Cash Flow (FCFF) and WACC yields Implied Enterprise Value.
3. 03Explains that using Levered Free Cash Flow (FCFE) and Cost of Equity yields Implied Equity Value.

common mistakes

• Stating that the formula only ever yields Enterprise Value.
• Mixing up the matching of cash flows and discount rates.

a good answer hits

1. 01States that DDM projects and discounts future dividends, whereas DCF projects and discounts Free Cash Flows.
2. 02Mentions that DDM uses the Cost of Equity to discount cash flows, whereas DCF typically discounts FCF to find Enterprise Value.
3. 03Explains that DDM yields Implied Equity Value directly and does not require an Enterprise Value bridge.
4. 04Identifies that DDM is primarily used for financial institutions like banks and insurance companies that pay regular dividends.

common mistakes

• Discounting dividends using WACC instead of Cost of Equity.
• Attempting to subtract net debt from the DDM output to find Equity Value, forgetting it already outputs Equity Value directly.

a good answer hits

1. 01Identifies the Discount Rate and Terminal Value as the assumptions with the biggest impact.
2. 02Explains that the Discount Rate affects the Present Value of all future cash flows.
3. 03Explains that the Present Value of the Terminal Value often represents 50% or more of the company's Implied Value.
4. 04Mentions that revenue growth and operating margins have a significant impact, but less than the Discount Rate and Terminal Value.

common mistakes

• Stating that CapEx or Working Capital changes have a larger impact than the Discount Rate.
• Failing to explain why the Discount Rate and Terminal Value are the most impactful.

a good answer hits

1. 01Identifies revenue or cash flow growth rates that do not decline to stable macroeconomic levels by the end of the forecast period.
2. 02Identifies an excessively high percentage of total value coming from the present value of the Terminal Value.
3. 03Mentions double-counting expenses in both Free Cash Flow and the valuation bridge.
4. 04Mentions assuming capital expenditures fall below depreciation and amortization during a growth phase.

common mistakes

• Assuming CapEx can permanently remain below D&A for a growing company.
• Failing to notice when the terminal value dominates the entire valuation due to an overly short forecast period.

a good answer hits

1. 01States clearly that the valuation will be affected by the change in capital structure.
2. 02Explains that while Unlevered Free Cash Flow is unaffected, the Discount Rate (WACC) will change.
3. 03Mentions that WACC must be calculated using the changing capital structure percentages over the forecast period.

common mistakes

• Agreeing that the valuation is unaffected because Unlevered FCF does not include interest expenses.
• Failing to mention that WACC must change dynamically over the forecast period to reflect the transition.

a good answer hits

1. 01States that extending the forecast period reduces the proportion of total implied value derived from the Terminal Value.
2. 02Explains that more cash flows are captured in the explicit forecast period rather than the terminal period.
3. 03Mentions that the overall Implied Value could increase or decrease depending on the specific growth and discount rate assumptions in years 11-20.

common mistakes

• Asserting that the implied value will definitely increase because there are 10 more years of cash flows.
• Failing to mention the shift in value concentration from Terminal Value to the explicit forecast period.

a good answer hits

1. 01States that it is difficult to tell without running the numbers because the changes are of different magnitudes.
2. 02Mentions that doubling revenue growth could potentially have a larger impact than a 1% change in the Discount Rate.
3. 03Explains that operational changes make a bigger impact in longer projection periods (e.g., 10 years vs. 5 years).

common mistakes

• Giving a definitive answer without acknowledging the massive difference in the scale of the changes.
• Failing to mention the role of the projection period length.

a good answer hits

1. 01States that introducing debt typically lowers WACC because debt is cheaper than equity.
2. 02Mentions that interest on debt is tax-deductible, creating a tax shield.
3. 03Explains that a lower WACC decreases the discount rate, which increases the implied DCF value.
4. 04Notes that if debt increases beyond an optimal level, WACC will eventually rise and lower the valuation.

common mistakes

• Assuming WACC always decreases with more debt without mentioning an optimal capital structure.
• Forgetting to mention the tax-deductibility of interest.

a good answer hits

1. 01States that the Discount Rate increase will make a bigger impact.
2. 02Explains that increasing revenue growth from 9% to 10% will barely affect Free Cash Flow and Terminal Value.
3. 03Explains that the Discount Rate affects the Present Value of all cash flows, making a 1% change highly significant.

common mistakes

• Choosing revenue growth because growth compounds over time.
• Failing to mention that the Discount Rate discounts all future cash flows, including the Terminal Value.

a good answer hits

1. 01States that changing the discount rate from 10% to 5% will have a larger impact.
2. 02Explains that the discount rate affects the present value of both discrete cash flows and the terminal value.
3. 03Mentions that the discounting effect compounds over time, creating a massive valuation shift.
4. 04Explains that cutting revenue growth reduces future cash flows but does not compound across the entire discounting mechanism in the same way.

common mistakes

• Arguing that revenue growth has a larger impact because it directly drives the top-line cash flows.
• Failing to explain the compounding effect of the discount rate on the Terminal Value.

a good answer hits

1. 01States that a lower corporate tax rate increases WACC because it reduces the tax shield on interest payments.
2. 02Mentions that a lower tax rate increases the Cost of Equity through beta levering.
3. 03States that a lower tax rate directly increases Free Cash Flows.
4. 04Concludes that the positive impact of higher cash flows typically outweighs the increase in WACC, leading to a higher implied DCF valuation.

common mistakes

• Assuming a lower tax rate decreases WACC because taxes are lower.
• Failing to recognize the dual, opposing effects on cash flows and WACC.

a good answer hits

1. 01States that higher short-term rates typically raise the risk-free rate.
2. 02Explains that a higher risk-free rate increases both the Cost of Equity and the Cost of Debt, raising WACC.
3. 03States that a higher WACC increases the discount rate, which decreases the implied DCF valuation.
4. 04Mentions that this assumes long-term yields used as the risk-free rate also rise.

common mistakes

• Assuming short-term rate hikes automatically change the DCF without noting that the risk-free rate is typically based on long-term yields.
• Failing to link the risk-free rate increase to both Cost of Equity and Cost of Debt.

a good answer hits

1. 01Identifies that with a one-year forecast the terminal value is effectively the entire answer
2. 02Concludes the DCF is an exit multiple assumption, and says so rather than presenting it as intrinsic value
3. 03Offers the two honest routes: lead with market evidence, or build the forecast bottom up
4. 04Describes what bottom up actually means: contracted revenue, renewal, price and volume, fixed and variable costs
5. 05Presents the output as a sensitised range with the driving assumption named

common mistakes

• Running a five-year forecast that is just next year grown at a constant rate, and presenting the output as intrinsic value.

a good answer hits

1. 01States that the WACC framework itself is unchanged; what is missing is market data.
2. 02Uses comparable public companies to source the inputs.
3. 03Estimates the cost of debt from public peer yields or credit default spreads rather than an observable market price.
4. 04Uses the median capital structure of public peers to re-lever the beta, since the private company has no observable beta.
5. 05Adds a size or illiquidity premium to the cost of equity.

common mistakes

• Using the private company's own book capital structure to re-lever beta rather than the peer median.
• Using the coupon on existing private debt as the cost of debt rather than a market yield.
• Omitting the size premium, which understates the cost of equity for a small company.
• Attempting to regress a beta for a company whose shares do not trade.

a good answer hits

1. 01States that the DDM and Levered DCF both require more detailed forecasting than an Unlevered DCF.
2. 02Names what has to be projected additionally: debt, equity, interest expense and dividends.
3. 03Notes that the extra work does not automatically produce a more accurate answer.
4. 04States that they are most useful where a REIT's dividend payout fluctuates materially.
5. 05Explains that for REITs the DDM and Levered DCF are structurally close, differing mainly in that the DDM projects dividends as a percentage of FFO rather than discounting levered free cash flow.

common mistakes

• Assuming a more detailed model is necessarily a more accurate one.
• Discounting dividends or levered cash flow at WACC rather than the Cost of Equity.
• Subtracting net debt from the output of a DDM or Levered DCF, which already produces Equity Value.

a good answer hits

1. 01Starts from capacity, projected as Available Seat Kilometres or Available Seat Miles.
2. 02Applies a load factor to capacity to get Revenue Passenger Kilometres.
3. 03Multiplies RPK by passenger yield to get passenger revenue.
4. 04Splits the cost base into fuel and non-fuel costs, because fuel is the volatile, hedgeable one.
5. 05Builds cash flow from Net Income, adding back the large depreciation charge, adjusting for working capital and subtracting the heavy CapEx.

common mistakes

• Projecting revenue as a single growth rate rather than through capacity, load factor and yield.
• Treating fuel as an ordinary operating cost line, hiding the single biggest swing factor in airline earnings.
• Understating CapEx and aircraft lease obligations, which is what makes airline free cash flow so much weaker than EBITDA.

a good answer hits

1. 01proposes calculating a weighted average ERP by multiplying the percentage of revenue earned in each country by that country's specific ERP
2. 02proposes an alternative method of adding a country-specific default spread to a baseline ERP like the U.S. ERP
3. 03explains that the country-specific default spread reflects the additional risk of operating in other regions

common mistakes

• suggesting to weight the ERP by asset location or headquarters location rather than revenue
• failing to adjust the baseline ERP for country-specific risk

a good answer hits

1. 01Draws the analogy to a retailer: revenue is built from unit count and unit productivity.
2. 02Builds revenue from the number of facilities, average beds per facility, utilisation rate and revenue per bed.
3. 03Ties operating expenses to facility count or size.
4. 04Ties staffing costs, the dominant expense, to bed count.
5. 05Drives CapEx and working capital from the plan to maintain or expand the physical estate.

common mistakes

• Forecasting revenue as a single growth rate rather than through occupancy and rate.
• Ignoring utilisation, which is the operating leverage in the model.
• Treating staffing as a fixed overhead rather than scaling with beds.
• Overlooking reimbursement mix, since payor rates differ sharply per bed.

a good answer hits

1. 01States that the emerging market company will have a higher Discount Rate (WACC).
2. 02Mentions specific risks driving this higher rate, such as geopolitical, equity, or credit risks.
3. 03Explains that because their financial profiles are identical, the higher risk is not offset by faster growth.
4. 04Concludes that the emerging market company will have a lower implied DCF valuation.

common mistakes

• Assuming the emerging market company must have a higher valuation because emerging markets grow faster.
• Failing to mention the country risk premium or higher discount rate.

a good answer hits

1. 01states that the risk-free rate should match the currency of the company's cash flows
2. 02mentions using 10-year government bonds as the benchmark
3. 03provides concrete examples matching currency to bond type, such as 10-year U.S. Treasuries for USD, 10-year European government bonds for EUR, or 10-year UK gilts for GBP

common mistakes

• suggesting a weighted average of different country interest rates instead of matching the reporting currency
• using short-term treasury bills instead of 10-year government bonds