Corporate Finance: cram pack

Formula sheets, the key method steps for every topic and 10 practice problems, with full solutions at the back.

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1Formulas and methods

Time value of money

Future value
FV = PV·(1 + i)n
Present value
PV = FV/(1 + i)n
Several periods per year
i = r/m, N = m·n
Annuity, present value
PV = PMT·[1 − (1 + i)−n]/i
Annuity, future value
FV = PMT·[(1 + i)n − 1]/i

Method

  1. Draw a timeline with every cash flow and its timing.
  2. Match the rate to the period: a monthly rate for monthly payments.
  3. Use FV = PV·(1 + i)ⁿ for single amounts and the annuity formulas for equal payments.
  4. Check the sign and the order of magnitude of the answer.

NPV & IRR

Net present value
NPV = −C0 + Σ CFt/(1 + r)t
Equal cash flows
NPV = −C0 + CF·[1 − (1 + r)−n]/r
Internal rate of return
the r at which NPV = 0
Decision
accept when NPV > 0 (or IRR > required return)

Method

  1. List all cash flows with their year; the investment at year 0 is negative.
  2. Discount each cash flow: CFt/(1 + r)t.
  3. Add them up to get the NPV. Positive means the project earns more than r.
  4. For the IRR, find the rate that makes NPV zero by trial or interpolation.

Bond pricing & yield

Bond price
P = C·(1 − (1 + y)−n)/y + F/(1 + y)n
Semi-annual
C/2, y/2 and 2n periods
Current yield
C/P
Price and yield
yield up → price down

Method

  1. Find the coupon per period and the yield per period.
  2. Price = present value of the coupons (an annuity) + present value of the face value.
  3. For semi-annual coupons use half the coupon, half the yield and twice the periods.
  4. Check: if the yield is above the coupon rate, the price is below face value.

CAPM & WACC

CAPM
re = rf + β·(rm − rf)
WACC
E/V·re + D/V·rd·(1 − T)
Firm value
V = E + D

Break-even analysis

Contribution margin
CM = p − v
Break-even quantity
QBE = FC/(p − v)
Target profit
Q = (FC + profit)/(p − v)
Profit
π = (p − v)·Q − FC
Margin of safety
(Q − QBE)/Q

2Practice problems

1.Time value of moneyMedium
years0123…9PV = ?€20 000+2.5%+2.5%…r = 8.5%

A property is expected to earn net rent of €20 000 next year. The rent is expected to grow by 2.5% per year forever. The required return is 8.5% per year. Find the value PV of the property today.

C1 = €20 000g = 2.5%r = 8.5%
PV = €
2.Time value of moneyHard
months0123…216€250€250€250FV = ?

You save €250 at the end of every month for 18 years. The account pays 4.8% per year, compounded monthly. How much have you saved at the end? Find FV.

A = €2504.8% / 12N = 216
FV = €
3.NPV & IRRMedium
years0123456€40 000€5 000€5 000€5 000€5 000€5 000€5 000r = 5%, EAC = ?

A machine costs €40 000 today, lasts 6 years and costs €5 000 per year to run (paid at the end of each year). The cost of capital is 5%. Find its equivalent annual cost EAC.

C0 = €40 000M = €5 000n = 6r = 5%
EAC = €
4.NPV & IRRHard
years0123…10−100 0009 000+2%+2%+2%r = 8%, NPV = ?

A project costs €100 000 today. Its cash flow is €9 000 at the end of year 1 and grows by 2% per year until the last cash flow at the end of year 10. The cost of capital is 8%. Find the net present value NPV.

C0 = €100 000CF1 = €9 000g = 2%n = 10r = 8%
NPV = €
5.Bond pricing & yieldMedium
half-years0123…16€40€40€40 + €1 000P = ?

A bond with a face value of €1 000 pays an 8% annual coupon in two half-yearly payments and matures in 8 years. The yield to maturity is 5% per year. Find the price P of the bond.

F = €1 000coupon = 8%YTM = 5%n = 8
P = €
6.Bond pricing & yieldHard
years012345€895€30€30 + €1 000

A bond with a face value of €1 000 and an annual coupon of 3% matures in 5 years and sells for €895. Find its yield to maturity YTM in percent.

F = €1 000coupon = 3%n = 5P = €895
YTM = %
7.CAPM & WACCMedium
WACC = ?equity€12 000 000re​ = 10%debt€4 000 000rd​ = 4.5%T = 25%

A company has equity worth €12 000 000 and debt worth €4 000 000. Its cost of equity is 10%, its pre-tax cost of debt is 4.5% and the tax rate is 25%. Find the WACC.

E = €12 000 000D = €4 000 000re = 10%rd = 4.5%T = 25%
WACC = %
8.CAPM & WACCHard
WACC = ?equity4 000 000 × €24.00β = 0.9rf​ = 2.5%, rm​ = 8.5%debt10 000 × €1 000rd​ = 7%T = 25%

A company has 4 000 000 shares at €24.00 each and 10 000 bonds trading at €1 000 each. The pre-tax cost of debt is 7% and the tax rate is 25%. The share’s beta is 0.9, the risk-free rate 2.5% and the market return 8.5%. Find the WACC.

β = 0.9rf = 2.5%rm = 8.5%rd = 7%T = 25%
WACC = %
9.Break-even analysisMedium
Q€revenuetotal costfixed costQ = ?

A product sells for €27 with a variable cost of €25 per unit. Fixed costs are €3 000 per month and profit is taxed at 20%. How many units Q must be sold per month to earn €1 000 after tax?

p = €27v = €25F = €3 000T = 20%after-tax profit = €1 000
Q = units
10.Break-even analysisHard
Q€revenuetotal costfixed costBE

A product sells for €48 per unit, with a variable cost of €45 per unit and fixed costs of €3 600 per year. Budgeted sales are 1 680 units. Find the margin of safety MS as a percentage of budgeted sales.

F = €3 600p = €48v = €45budget = 1 680
MS = %

3Solutions

1.Time value of money

Answer: PV = 333333 €

Time value of money: money today is worth more than the same amount later, because it can earn interest. With interest rate i per period, an amount grows as FV = PV·(1 + i)n. A series of equal payments (an annuity) is valued by adding up each payment, which gives the annuity formulas.

Growing perpetuity

PV = C1/(r − g) = 20 000/(0.085 − 0.025) = 20 000/0.06 = €333 333.33

Answer

PV = €333 333.33
2.Time value of money

Answer: FV = 85534 €

Time value of money: money today is worth more than the same amount later, because it can earn interest. With interest rate i per period, an amount grows as FV = PV·(1 + i)n. A series of equal payments (an annuity) is valued by adding up each payment, which gives the annuity formulas.

Monthly rate and number of deposits

i = 0.048/12 = 0.004
N = 12·18 = 216

Future value of the deposits

FV = A·((1 + i)N − 1)/i = 250·(2.369 − 1)/0.004 = €85 534.17

Answer

FV = €85 534.17

You paid in €54 000 yourself; the rest is interest.

3.NPV & IRR

Answer: EAC = 12881 €

Equivalent annual cost: spread the present value of all costs over the life as an equal yearly amount (an annuity): EAC = PV·r/(1 − (1 + r)⁻ⁿ). It lets you compare machines with different lives.

Annuity factor

(1 − 1.05−6)/0.05 = 5.076

Annualised purchase price

40 000/5.076 = 7 880.70

EAC

EAC = 7 880.70 + 5 000 = €12 880.70

Answer

EAC = €12 880.70
4.NPV & IRR

Answer: NPV = −34695 €

Net present value: discount every cash flow back to today with the required rate of return r, then add them up: NPV = Σ CFₜ/(1 + r)ᵗ. A project with NPV > 0 earns more than r and adds value. The internal rate of return (IRR) is the rate at which NPV = 0.

Present value of the growing annuity

((1.02)/(1.08))10 = 0.5646
PV = 9 000/(0.08 − 0.02)·(1 − 0.5646) = 65 305.46

NPV

NPV = 65 305.46 − 100 000 = −€34 694.54

Answer

NPV = −€34 694.54

NPV is negative, so the project earns less than the required return.

5.Bond pricing & yield

Answer: P = 1196 €

Bond pricing: a bond’s price is the present value of its cash flows, discounted at the yield to maturity (YTM): the coupons form an annuity and the face value is paid back at maturity. P = C·(1 − (1 + y)⁻ⁿ)/y + F/(1 + y)ⁿ. When the yield is above the coupon rate the bond trades below face value, and the other way round.

Per period

C = €40.00, i = 0.025, N = 16

Present value of the coupons

€40.00·(1 − 0.6736)/0.025 = €522.20

Present value of the face value

€1 000·0.6736 = €673.62

Price

P = €1 195.83

Answer

P = €1 195.83

The yield is below the coupon rate, so the bond sells at a premium.

6.Bond pricing & yield

Answer: YTM = 5.456 %

Bond pricing: a bond’s price is the present value of its cash flows, discounted at the yield to maturity (YTM): the coupons form an annuity and the face value is paid back at maturity. P = C·(1 − (1 + y)⁻ⁿ)/y + F/(1 + y)ⁿ. When the yield is above the coupon rate the bond trades below face value, and the other way round.

Equation for the yield

€895 = €30·(1 − (1 + y)⁻⁵)/y + €1 000/(1 + y)⁵

Solve numerically

P(5%) = €913.41, P(6%) = €873.63
YTM = 5.456%

Answer

YTM = 5.456%
7.CAPM & WACC

Answer: WACC = 8.344 %

Cost of capital: CAPM gives the return shareholders require: re = rf + β·(rm − rf). The weighted average cost of capital mixes equity and debt by their market values: WACC = E/V·re + D/V·rd·(1 − T), with V = E + D. Interest is tax-deductible, hence the (1 − T).

Weights

V = €16 000 000, E/V = 0.75, D/V = 0.25

WACC

WACC = 0.75·10% + 0.25·4.5%·(1 − 0.25) = 8.344%

Answer

WACC = 8.344%
8.CAPM & WACC

Answer: WACC = 7.65 %

Cost of capital: CAPM gives the return shareholders require: re = rf + β·(rm − rf). The weighted average cost of capital mixes equity and debt by their market values: WACC = E/V·re + D/V·rd·(1 − T), with V = E + D. Interest is tax-deductible, hence the (1 − T).

Market values

E = 4 000 000·€24.00 = €96 000 000
D = 10 000·€1 000 = €10 000 000

Cost of equity (CAPM)

re = 2.5% + 0.9·6% = 7.9%

Weights

V = €106 000 000, E/V = 0.9057, D/V = 0.09434

WACC

WACC = 0.9057·7.9% + 0.09434·7%·(1 − 0.25) = 7.65%

Answer

WACC = 7.65%
9.Break-even analysis

Answer: Q = 2125 units

Cost-volume-profit: each unit sold earns a contribution margin, price minus variable cost per unit. Profit = Q·(p − v) − F, where F is the fixed cost. At the break-even point profit is zero, so Q = F/(p − v).

Pre-tax profit needed

1 000/(1 − 0.2) = €1 250

Units needed

Q = (3 000 + 1 250)/2 = 2 125

Answer

Q = 2 125 units
10.Break-even analysis

Answer: MS = 28.57 %

Cost-volume-profit: each unit sold earns a contribution margin, price minus variable cost per unit. Profit = Q·(p − v) − F, where F is the fixed cost. At the break-even point profit is zero, so Q = F/(p − v).

Break-even quantity

Q = F/(p − v) = 3 600/3 = 1 200

Margin of safety

MS = (1 680 − 1 200)/1 680·100 = 28.57%

Answer

MS = 28.57%

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