Formula sheets, the key method steps for every topic and 10 practice problems, with full solutions at the back.
A credit card charges a nominal interest rate of 15% per year, compounded monthly. Find the effective annual rate EAR in percent.
A mortgage of €250 000 is repaid with equal monthly payments over 25 years at 6% per year, compounded monthly. How much is still owed just after the payment at the end of year 17? Find the outstanding balance B.
An investment of €60 000 gives these cash flows at the end of years 1 to 4: €22 000, €21 000, €13 000, €25 000. The cost of capital is 15%. Find the net present value NPV.
A project costs €20 000 and returns €10 500, €12 500, €10 500 at the end of years 1 to 3. Find its internal rate of return IRR in percent.
You buy a bond with 3 years to maturity (face value €1 000, annual coupon 5%) when its yield to maturity is 7%. One year later, just after receiving the first coupon, you sell it when the yield to maturity is 8%. Find your holding period return HPR in percent.
A bond trades at €920 with a yield to maturity of 4% (annual compounding) and a Macaulay duration of 10.5 years. Use the modified duration to estimate the new price P if the yield falls by 50 basis points.
A company has equity worth €8 000 000 and debt worth €6 000 000. Its cost of equity is 8%, its pre-tax cost of debt is 3% and the tax rate is 20%. Find the WACC.
A company has 5 000 000 shares trading at €20.50; the book value of its equity is €61 500 000. It just paid a dividend of €2.30 per share, and dividends grow by 5% per year. Its debt has a market value of €61 500 000 and a pre-tax cost of 4%. The tax rate is 30%. Find the WACC, using the dividend growth model for the cost of equity.
A product sells for €14 per unit with a variable cost of €6 per unit. Fixed costs are €20 000 per month. How many units Q must be sold per month to make a profit of €20 000?
A product sells for €49 per unit, with a variable cost of €45 per unit and fixed costs of €4 800 per year. Budgeted sales are 1 500 units. Find the margin of safety MS as a percentage of budgeted sales.
Answer: EAR = 16.08 %
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.
The EAR is always above the nominal rate when interest compounds more than once a year.
Answer: B = 122571 €
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.
Whatever is still owed must be exactly paid off by the remaining payments.
Answer: NPV = −2149 €
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.
NPV is negative, so the project earns less than the required return.
Answer: IRR = 30.89 %
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.
NPV falls as the rate rises, so the IRR lies between a rate with positive NPV and one with negative NPV.
Linear interpolation gives a first estimate; repeating it (or a calculator's IRR function) gives the exact rate.
Answer: HPR = 5.17 %
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.
Answer: P = 966.4 €
Duration: the Macaulay duration is the weighted average time at which a bond pays its cash flows, with the present values of the cash flows as weights: D = Σ t·PVₜ/P. The modified duration D/(1 + y) estimates the percentage price change for a small change in yield: %ΔP ≈ −Dmod·Δy.
Duration is a linear estimate; for large yield changes convexity makes the true price a little higher.
Answer: WACC = 5.6 %
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).
Answer: WACC = 11.54 %
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).
Answer: Q = 5000 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).
Answer: MS = 20 %
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).
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