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Chapter 21
Dynamic Capital Structures and Corporate Valuation
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Topics in Chapter
MM models, with and without corporate
taxes
Miller model, with corporate and
personal taxes
Compressed adjusted present value model
Equity as an option
MM proofs
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Value = + + ··· + FCF1 FCF2 FCF∞
(1 + WACC)1 (1 + WACC)∞ (1 + WACC)2
Free cash flow (FCF)
Market interest rates
Firm’s business risk Market risk aversion
Firm’s debt/equity
mix
Cost of debt
Cost of equity
Weighted average cost of capital
(WACC)
Net operating profit after taxes
Required investments in operating capital
−
=
Determinants of Intrinsic Value: The Capital Structure Choice
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Who are Modigliani and Miller (MM)?
They published theoretical papers that changed the way people thought about financial leverage.
They won Nobel prizes in economics because of their work.
MM’s papers were published in 1958 and 1963. Miller had a separate paper in 1977. The papers differed in their assumptions about taxes.
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What assumptions underlie the MM and Miller Models?
Firms can be grouped into
homogeneous classes based on business risk.
Investors have identical expectations about firms’ future earnings.
There are no transactions costs.
No agency or financial distress costs. (More...)
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All debt is riskless, and both individuals
and corporations can borrow unlimited amounts of money at the risk-free rate.
All cash flows are perpetuities. This implies perpetual debt is issued, firms
have zero growth, and expected EBIT is constant over time.
What assumptions underlie the MM and Miller Models?
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MM Detailed Assumptions and Notation
Company U is Unlevered. It has no debt,
only stock S.
Company is Levered. It has debt amount
D, with interest rate rd. It has stock SL.
Both companies are identical except for debt. Same EBIT and operating risk.
Zero growth, g = 0. No net additions to capital. Continued….
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MM Detailed Assumptions and Notation….continued.
The required return on U’s equity is rsU.
The required return on L’s equity is rsL.
Debt is riskless and investors can borrow as well as lend at this rate. The cost of
debt is rd.
Tax savings due to deductibility of interest
expense have the same risk as debt and should be discounted at the cost of debt.
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MM with Zero Taxes (1958)
Proposition I: VL = VU.
Proposition II:
rsL = rsU + (rsU – rd)(wd/ws)
The levered beta: b = bU + bU(D/S)
Notes: The ratios wd/ws and D/S are have the same value, so they can be used interchangeably. For a proof of the propositions, right click here and open link to page in this same file: Proof of MM with Zero Taxes (1958)
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Numerical Illustration of the MM No-Tax Propositions
Firms U and L are in same risk class.
EBITU = EBITL = $500,000.
Firm U has no debt; rsU = 14%.
Firm L has $1,000,000 debt at rd = 8%.
The basic MM assumptions hold.
There are no corporate or personal taxes.
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VU = = = $3,571,429.
VL = VU = $3,571,429.
EBIT
rsU
$500,000
0.14
1. Find VU and VL.
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VL = D + S = $3,571,429
$3,571,429 = $1,000,000 + SL
SL = $2,571,429.
2. Find the market value of Firm L’s debt and equity.
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rsL = rsU + (rsU - rd)(D/SL)
= 14.0% + (14.0% - 8.0%)( ) = 14.0% + 2.33% = 16.33%.
$1,000,000
$2,571,429
3. Find rsL.
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WACC = wdrd + wsrs = (D/V)rd + (S/V)rs
= ( )(8.0%)
+( )(16.33%) = 2.24% + 11.76% = 14.00%.
$1,000,000
$3,571,429
$2,571,429
$3,571,429
4. Proposition I implies WACC = rsU. Verify for L using WACC formula.
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Without taxes Cost of Capital (%)
26
20
14
8
0 20 40 60 80 100 Debt/Value Ratio (%)
rs
WACC
rd
MM Relationships Between Capital Costs
and Leverage (D/V)
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MM No-Tax Conclusions:
The more debt the firm adds to its capital
structure, the riskier the equity becomes and thus the higher its cost.
Although rd remains constant, rs increases with leverage. The increase in rs is exactly
sufficient to keep the WACC constant.
Because the WACC and FCF’s don’t change, the firm’s value doesn’t change.
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Value of Firm, V (%)
4
3
2
1
0 0.5 1.0 1.5 2.0 2.5 Debt (millions of $)
VL VU
Firm value ($3.6 million)
With zero taxes, MM argue that value is unaffected by leverage.
Graph value versus leverage.
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MM with Corporate Taxes (1963)
Proposition I: VL = VU + VTax shield = VU + TD
Proposition II: rsL = rsU + (rsU – rd )(1 – T)(D/S)
The levered beta:
b = bU + bU (1 – T)(D/S)
b = bU [1+(1 – T)(wd/ws)]
Note: For a proof of the propositions, right click here and open link to page in this same file: Proof: MM with Corporate Taxes (1963)
18
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With corporate taxes added, the MM
propositions become: Proposition I:
VL = VU + TD. Proposition II:
rsL = rsU + (rsU - rd)(1 - T)(D/S).
V, S, rs, and WACC for Firms U and L (40% Corporate Tax Rate)
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Notes About the New Propositions
1. When corporate taxes are added,
VL ≠ VU. VL increases as debt is added to the capital structure, and the greater
the debt usage, the higher the value of the firm.
2. rsL increases with leverage at a slower rate when corporate taxes are considered.
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Note: Represents a 40% decline from the no
taxes situation.
VL = VU + TD = $2,142,857 + 0.4($1,000,000)
= $2,142,857 + $400,000
= $2,542,857.
VU = = = $2,142,857. EBIT(1 - T)
rsU
$500,000(0.6)
0.14
1. Find VU and VL.
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VL = D + S = $2,542,857
$2,542,857 = $1,000,000 + S
S = $1,542,857.
2. Find market value of Firm L’s debt and equity.
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= 14.0% + (14.0% - 8.0%)(0.6)( ) = 14.0% + 2.33% = 16.33%.
$1,000,000
$1,542,857
3. Find rsL.
rsL = rsU + (rsU - rd)(1 - T)(D/S)
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WACCL = (D/V)rd(1 - T) + (S/V)rs
= ( )(8.0%)(0.6)
+( )(16.33%)
= 1.89% + 9.91% = 11.80%.
When corporate taxes are considered, the WACC is lower for L than for U.
$1,000,000
$2,542,857
$1,542,857
$2,542,857
4. Find Firm L’s WACC.
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Cost of Capital (%)
26
20
14
8
0 20 40 60 80 100 Debt/Value Ratio (%)
rs
WACC
rd(1 - T)
MM: Capital Costs vs. Leverage with Corporate Taxes
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Under MM with corporate taxes, the firm’s value increases continuously as more and more debt is used.
Value of Firm, V (%)
4
3
2
1
0 0.5 1.0 1.5 2.0 2.5 Debt
(Millions of $)
VL
VU
TD
MM: Value vs. Debt with Corporate Taxes
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How is analysis different if firms U and L are growing?
Under MM (with taxes and no growth)
VL = VU + TD
This assumes the tax shield is discounted at the cost of debt.
Assume the growth rate is 7%
The debt tax shield will be larger than
TD because it is growing.
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7% growth, TS discount rate of rTS
Value of (growing) tax shield =
VTS = rdTD/(rTS – g)
So value of levered firm =
VL = VU + rdTD/(rTS – g)
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The Compressed Adjusted Present Value (APV)Model
The smaller is rTS, the larger the value of
the tax shield. If rTS < rsU, then with rapid growth the tax shield becomes
unrealistically large—rTS must be equal to rU to give reasonable results when there is growth.
The APV model assumes rTS = rsU.
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Levered cost of equity in the APV model
In this case, the levered cost of equity is
rsL = rsU + (rsU – rd)(D/S)
This looks just like MM without taxes
even though we allow taxes and allow for growth. The reason is if rTS = rsU, then
larger values of the tax shield don't change the risk of the equity.
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Levered Beta in the Compressed APV Model
If there is growth and rTS = rsU then the equation that is equivalent to the Hamada equation is
bL = bU + (bU - bD)(D/S)
Notice: This looks like Hamada without
taxes. Again, this is because in this case the tax shield doesn't change the
risk of the equity.
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Relevant information for valuation
EBIT = $500,000
T = 40%
rU = 14% = rTS
rd = 8%
Required reinvestment in net operating assets = 10% of EBIT = $50,000.
Debt = $1,000,000
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Calculating VU
NOPAT = EBIT(1-T)
= $500,000 (.60) = $300,000
Investment in net op. assets
= EBIT (0.10) = $50,000
FCF = NOPAT – Inv. in net op. assets
= $300,000 - $50,000
= $250,000 (this is expected FCF next year)
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Value of unlevered firm, VU
Value of unlevered firm
VU = FCF/(rsU – g)
= $250,000/(0.14 – 0.07)
= $3,571,429
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Value of tax shield, VTS and VL
VTS = rdTD/(rsU – g)
= 0.08(0.40)$1,000,000/(0.14-0.07)
= $457,143
VL = VU + VTS
= $3,571,429 + $457,143
= $4,028,571
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Cost of Equity and WACC in the Compressed APV Model
Just like with MM with taxes, the cost of
equity increases with D/V, and the WACC declines.
But since rsL doesn't have the (1-T) factor in it, for a given D/V, rsL is
greater than MM would predict, and WACC is greater than MM would predict.
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Cost of Capital for MM and Compressed APV
0%
5%
10%
15%
20%
25%
30%
35%
40%
0% 10% 20% 30% 40% 50% 60% 70% 80%
D/V
MM cost of equity
MM WACC
APV cost of equity
APV WACC
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Dynamic Capital Structures and the APV Model
Dynamic capital structure:
The capital structure will change for several years before becoming it is expected to stay at its target
Can’t use MM or free cash flow valuation model.
Use the compressed APV
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Example Data
Year 1 2 3
Free Cash Flow $250 $290 $320
Interest expense $80 $96 $120
Tax rate = 40%
Unlevered cost of equity = rsU = 14%
Long term growth rate = gL = 7%
Forecast of nonconstant period ($ thousands):
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Compressed APV Approach with Nonconstant Cash Flows
Calculate the unlevered value of
operations, VU
Find horizon value, HVU,3
Find PV of FCFs and horizon value
Calculate the value of the tax shield, VTS
Find horizon value of tax shield, HVTS,3
Find PV of tax shields and horizon value
Sum VU and VTS to get Vop
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Estimating Current Unlevered Value of Operations (Nonconstant g in FCF until
after Year 3; gL = 7%; rsU = 14%)
($ thousands) gL = 7%
Year 0 1 2 3 4
FCF $250 $290 $320
FCF3(1 + gL) ↓
$342.4
↓ ↓
$219 ← $250/(1+rsU)1 ↓
PVs of FCF
$223 ← $290/(1+rsU)2
FCF4rsU − gL
$216 ← $320/(1+rsU)3
↓
PV of HVU,3 $3,301 $4,891/(1+rsU)3 ← HVU,3= $4,891 ←
$342.4
0.07
VU = $3,959 ($3,960 if no rounding in intermediate steps)
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Estimating Current Value of the Tax Shield(Nonconstant g in TS until after Year 3;
gL = 7%; rsU = 14%)
($ thousands) gL = 7%
Year 0 1 2 3 4
Interest Exp. $80 $95 $120 Int(T) ↓
Int(T) ↓
Int(T) ↓
TS $32 $38 $48 $51.36
↓ ↓
$28.1 ← $32/(1+rsU)1 ↓
PVs of TS
$29.2 ← $38/(1+rsU)2
$32.4 ← $48/(1+rsU)3
↓
PV of HVTS,3 $494.8 $4,891/(1+rsU)3 ← HVTS,3= $733
VTS = $584.5 ($584.94 if no rounding in intermediate steps)
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Total Current Value of Operations
The value of operations is the sum of the unlevered value and the value of the tax shield:
Vop = VU + VTS
Vop = $3,959 + $584.5 = $4,543.5
Vop = $4,543.5
Note: If no rounding in intermediate steps, Vop = $4,445).
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