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…10PV = ?€40 000

You need €40 000 in 10 years. An account pays 3% per year, compounded monthly. How much must you deposit today? Find the present value PV.

FV = €40 0003% / 12n = 10
PV = €
2.Time value of moneyHard
months0123…300€250 000A?AAA

A loan of €250 000 is repaid with equal monthly payments over 25 years. The interest rate is 4.8% per year, compounded monthly. Find the monthly payment A.

P = €250 0004.8% / 12N = 300
A = €
3.NPV & IRRMedium
years01234−30 00012 00013 0007 00012 000

An investment of €30 000 gives these cash flows at the end of years 1 to 4: €12 000, €13 000, €7 000, €12 000. The cost of capital is 9%. Find the net present value NPV.

r = 9%CF0 = −30 000CF1 = 12 000CF2 = 13 000CF3 = 7 000CF4 = 12 000
NPV = €
4.NPV & IRRHard
years0123456−150 00022 500+5%+5%+5%+5%+5%r = 10%, NPV = ?

A project costs €150 000 today. Its cash flow is €22 500 at the end of year 1 and grows by 5% per year until the last cash flow at the end of year 6. The cost of capital is 10%. Find the net present value NPV.

C0 = €150 000CF1 = €22 500g = 5%n = 6r = 10%
NPV = €
5.Bond pricing & yieldMedium
half-years0123…16€35€35€35 + €1 000P = ?

A bond with a face value of €1 000 pays a 7% annual coupon in two half-yearly payments and matures in 8 years. The yield to maturity is 5.5% per year. Find the price P of the bond.

F = €1 000coupon = 7%YTM = 5.5%n = 8
P = €
6.Bond pricing & yieldHard
years0123456€1 238€50€50€50 + €1 050

A bond with 11 years to maturity (face value €1 000, annual coupon 5%) sells for €1 238. The issuer can call it in 6 years at a call price of €1 050. Find the yield to call YTC in percent.

F = €1 000coupon = 5%P = €1 238call price = €1 050call in 6 years
YTC = %
7.CAPM & WACCMedium
WACC = ?equity€10 000 000re​ = 14%debt€2 000 000rd​ = 3%T = 28%

A company has equity worth €10 000 000 and debt worth €2 000 000. Its cost of equity is 14%, its pre-tax cost of debt is 3% and the tax rate is 28%. Find the WACC.

E = €10 000 000D = €2 000 000re = 14%rd = 3%T = 28%
WACC = %
8.CAPM & WACCHard
WACC = ?equity1 000 000 × €34.00β = 1.2rf​ = 2%, rm​ = 6.5%debt20 000 × €960rd​ = 5%T = 28%

A company has 1 000 000 shares at €34.00 each and 20 000 bonds trading at €960 each. The pre-tax cost of debt is 5% and the tax rate is 28%. The share’s beta is 1.2, the risk-free rate 2% and the market return 6.5%. Find the WACC.

β = 1.2rf = 2%rm = 6.5%rd = 5%T = 28%
WACC = %
9.Break-even analysisMedium
Q€revenuetotal costfixed cost5000

A company sells 5 000 units at €24 each. The variable cost is €18 per unit and fixed costs are €15 000. Find the degree of operating leverage DOL at this sales level.

Q = 5 000p = €24v = €18F = €15 000
DOL =
10.Break-even analysisHard
Q€revenuev = €12v = €16fixed cost6 250Q = ?

A company sells 6 250 units per month at €20 each, with a variable cost of €12 per unit and fixed costs of €40 000 per month. The variable cost rises by €4 per unit and the price stays the same. How many units Q must now be sold per month to keep the same profit?

Q = 6 250p = €20v = €12 → €16F = €40 000
Q = units

3Solutions

1.Time value of money

Answer: PV = 29644 €

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.

Rate and number of periods

i = 0.03/12 = 0.0025
N = 12·10 = 120

Present value

PV = FV/(1 + i)N = 40 000/1.349 = €29 643.82

Answer

PV = €29 643.82
2.Time value of money

Answer: A = 1432 €

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 payments

i = 0.048/12 = 0.004
N = 12·25 = 300

Payment

The present value of N equal payments A is A·(1 − (1 + i)⁻ᴺ)/i. Set it equal to the loan and solve for A.

(1 + i)−N = 0.3019
A = 250 000·0.004/(1 − 0.3019) = €1 432.49

Answer

A = €1 432.49
3.NPV & IRR

Answer: NPV = 5857 €

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 each cash flow

CF0 = −30 000
CF1/(1 + 0.09)1 = 12 000/1.09 = 11 009.17
CF2/(1 + 0.09)2 = 13 000/1.188 = 10 941.84
CF3/(1 + 0.09)3 = 7 000/1.295 = 5 405.28
CF4/(1 + 0.09)4 = 12 000/1.412 = 8 501.10

Add them up

NPV = €5 857.40

Answer

NPV = €5 857.40

NPV is positive, so the project earns more than the required return.

4.NPV & IRR

Answer: NPV = −40402 €

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

((1.05)/(1.1))6 = 0.7564
PV = 22 500/(0.1 − 0.05)·(1 − 0.7564) = 109 597.93

NPV

NPV = 109 597.93 − 150 000 = −€40 402.07

Answer

NPV = −€40 402.07

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

5.Bond pricing & yield

Answer: P = 1096 €

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 = €35.00, i = 0.0275, N = 16

Present value of the coupons

€35.00·(1 − 0.6479)/0.0275 = €448.16

Present value of the face value

€1 000·0.6479 = €647.87

Price

P = €1 096.03

Answer

P = €1 096.03

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

6.Bond pricing & yield

Answer: YTC = 1.608 %

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

1238 = 50·(1 − (1 + y)−6)/y + 1050/(1 + y)6

Solve numerically

y = 1%: €1 278.92
y = 2%: €1 212.44
YTC = 1.608%

Answer

YTC = 1.608%

The yield to maturity is 2.499%. Investors in a premium bond expect it to be called, so the lower yield to call is the more realistic one.

7.CAPM & WACC

Answer: WACC = 12.03 %

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 = €12 000 000, E/V = 0.8333, D/V = 0.1667

WACC

WACC = 0.8333·14% + 0.1667·3%·(1 − 0.28) = 12.03%

Answer

WACC = 12.03%
8.CAPM & WACC

Answer: WACC = 6.029 %

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 = 1 000 000·€34.00 = €34 000 000
D = 20 000·€960 = €19 200 000

Cost of equity (CAPM)

re = 2% + 1.2·4.5% = 7.4%

Weights

V = €53 200 000, E/V = 0.6391, D/V = 0.3609

WACC

WACC = 0.6391·7.4% + 0.3609·5%·(1 − 0.28) = 6.029%

Answer

WACC = 6.029%
9.Break-even analysis

Answer: DOL = 2

Operating leverage: fixed costs make profit react more strongly than sales. The degree of operating leverage DOL = contribution margin/operating profit tells you that a 1% change in sales changes profit by DOL %. It is very high just above break-even and falls as sales grow.

Total contribution margin

CM = 5 000·(24 − 18) = €30 000

Operating profit

Π = 30 000 − 15 000 = €15 000

DOL

DOL = 30 000/15 000 = 2

Answer

DOL = 2
10.Break-even analysis

Answer: Q = 12500 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).

Current profit

Π = 6 250·(20 − 12) − 40 000 = €10 000

New contribution margin per unit

20 − 16 = €4

Units for the same profit

Q = (40 000 + 10 000)/4 = 12 500

Answer

Q = 12 500 units

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