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Working Paper 95 13

A NOTE ON ABSOLUTE PRIORITY RULE
VIOLATIONS, CREDIT RATIONING, AND EFFICIENCY
by Stanley D. Longhofer

Stanley D. Longhofer is an economist at the Federal
Reserve Bank of Cleveland. The author is grateful
to Charles Calomiris, Joseph Haubrich, Charles Kahn,
James Thomson, and Anne Villamil for helpful
comments.
Working Papers of the Federal Reserve Bank of Cleveland
are preliminary materials circulated to stimulate discussion
and critical comment. The views stated herein are those
of the author and not necessarily those of the Federal
Reserve Bank of Cleveland or of the Board of Governors
of the Federal Reserve System.

November 1995

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Abstract

Violations of the absolute priority rule (APR) are commonplace in private workouts,
formal business reorganizations, and personal bankruptcies. While some theorists
suggest that these might arise endogenously, they are clearly magnified by the
institutional structure of the bankruptcy code. This paper shows that APR violations
exacerbate credit rationing problems by reducing the payment lenders receive in default
states. Furthermore, APR violations make default more likely, raising the interest rate
that firms must pay when borrowing. Both of these problems arise even when APR
violations have no impact on the borrower's incentive to undertake risk-shifting behavior.

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1. Introduction
The absolute priority rule (APR) is the theoretical standard by which financial contracts
are resolved when a debtor is unable to repay all of his creditors. Simply stated, this rule
requires that the debtor receive no value from his assets until all of his creditors have been repaid
in full.' While this rule would seem quite simple to implement, it is routinely circumvented in
practice.
Violations of the APR in Chapter 11 reorganizations are well documented. Studies by
Betker (1995), Franks and Torous (1991), and LoPucki and Whitford (1990) have shown that
stockholders of publicly traded companies that have gone through reorganizations receive value
about 75 percent of the time, even though their creditors are not paid the full value of their
claims. The magnitude of these deviations is not small. Eberhart, Moore, and Roenfeldt (1990)
find that the firm's original equityholders retain 7.6 percent of the firm's value on averageV2
APR violations are not limited solely to corporate bankruptcies. Chapter 5 of the Bankruptcy
Code allows individual debtors generous exemptions to protect personal property from their
~reditors.~In addition, bankruptcy eliminates most claims on a debtor's future wage income,
thereby limiting creditors' access to what is typically his most valuable asset: his human capital.
Clearly, the Bankruptcy Code provides implicit support for these violations in some cases
and explicit statutory authority for them in others. But whether or not they are beneficial remains

The APR also states that more senior creditors should be paid before junior creditors. In this paper,
we consider only APR violations between the borrower and a (single) lender.
Betker (1995) and Franks and Torous (1994) find these deviations to be somewhat smaller -2.86
percent and 2.3 percent, respectively.
11 U.S.C. $522.

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an open question. A growing body of research suggests that these deviations do, in fact, have
negative consequences. Indeed, many recent proposals for amending current banlauptcy law are
motivated by the belief that the frequent APR violations inherent in the current system are
undesirable." But this view that the APR should be sacrosanct is by no means universal.
We contribute to this discussion by showing that APR violations make credit rationing
problems more severe, since they make lenders less able to offer loans to high-risk borrowers.
Furthermore, APR violations make default more likely, increasing the interest rate borrowers
must pay when raising funds. Both of these problems arise even when APR violations have no
impact on the borrower' s incentive to undertake risk-shifting behavior.
The traditional model of credit rationing was developed by Stiglitz and Weiss (1981) and
focused on borrowers' adverse selection and moral hazard problems.5 Williamson (1986, 1987)
showed that credit rationing could exist even without these problems, relying instead on the
costly state verification framework used in this article. Each of these models of credit rationing
focuses on a market made up of many borrowers; in this world, credit rationing means that some
borrowers are denied loans even though they are indistinguishable from those who do receive
loans.
Since we use a costly state verification environment, our model most closely resembles
that of Williamson (1987). Credit rationing occurs in Williamson's model because lenders have
different reservation returns, giving him an upward-sloping supply function for loans. In our
model, however, there is only one borrower. One advantage to this approach is that it shows the

See Roe (1983), Bebchuk (1988), and Aghion, Hart, and Moore (1992).
See also Gale (1990) and Calomiris and Hubbard (1990).
2

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essential similarity between a borrower who is credit rationed and one who is "credit
constrained." A credit-constrained borrower is one who cannot obtain as large a loan as he might
in a perfect capital market with no informational asymmetries. For example, a consumer might
be forced to buy a smaller house or a less expensive car, or a business owner might be unable
to finance as much inventory as he would like to (and be able to if APR violations did not
occur). It should be clear, however, that if we were to posit Williamson's structure for the
supply side of the loan market, the credit rationing in our model would be identical to that which
he develops.
The next section briefly reviews recent research on the impact of APR violations on
financial contracts. Then, in section 3, we analyze APR violations in a simple costly state
verification model. We show that these violations cause the borrower to have a lower expected
return ex ante because they increase the probability of default. In section 4, we show that credit
rationing problems are more severe when APR violations are greater; that is, some loans that
might be made when APR violations do not occur in default states will not be made when they
do. We conclude in section 5.

2. Other Views on the APR
Bulow and Shoven (1978) and White (1980, 1983) were among the first to question the
efficiency of APRS.~ They show that when a firm is in financial distress, the APR generally
leads to inefficient investment and liquidation-continuation decisions. In particular, the APR
leads to an underinvestment problem, because equityholders can renegotiate their bank debt but

See also the later extensions by Gertner and Scharfstein (1991).
3

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not their public bonds. Since the benefits of some positive net present value projects will accrue
only to bondholders, the fm has no incentive to undertake them. Berkovitch and Israel (1991)
examine the over- and under-investment problems resulting from financial distress in more detail,
and show that APR violations allow the firm to renegotiate its debt efficiently, thereby
eliminating any perverse investment incentives. Eberhart and Senbet (1993) argue that APR
violations act to reduce the risk-shifting incentives of a firm in financial distress: Since
shareholders receive a portion of the firm's revenues even in default, they have less incentive to
take risky actions that might reduce this value.

Together, these papers suggest that APR

violations increase efficiency, ex post.
But while these papers might explain why the firm's equityholders and creditors might
find APR violations attractive once the firm is in financial distress, they ignore their impact on
ex ante efficiency, i.e., the firm's expected profits at the time of the initial financial contracting.
Here, opinions are more divided. Bebchuk (1991) focuses on the risk-shifting problem at this
initial stage. Since APR violations allow shareholders to receive some value even when the firm
is in default, they have an increased incentive to undertake negative net present value projects
that entail high risk. Eberhart and Sweeney (1994) find that between 30 and 85 percent of the
noise in the market for bankrupt firms' bonds may be attributable to APR violations, and thus
conclude that APR violations are detrimental because they add greater uncertainty to the security
valuation process. Finally, Rajan and Winton (1994) argue that a bank's ability to perfect liens
against a debtor's assets provides it with an incentive to perform its monitoring duties early if the bank waits too long, its liens may be considered a "voidable preference" under 5547 of the
Bankruptcy Code, thereby depriving the bank of any priority status. Here, violations of the APR

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have negative consequences on ex ante efficiency, since they reduce the incentive for bank
lenders to monitor early.
Countering these views is a group of papers proposing that APR violations have beneficial
ex ante effects. For example, Harris and Raviv (1993) argue that selecting an optimal bankruptcy
procedure is an extension of the optimal contracting problem. They analyze several different
state-independent bankruptcy procedures and show that they are all dominated by a contract in
which a bankruptcy court may impose forgiveness in high-cost-of-liquidation states, suggesting
that APR violations are ex ante efficient. Longhofer (1994) looks at how bankruptcy rules affect
the incentives for lenders to monitor a firm's behavior and suggests that anticipated ex post APR
violations are valuable to the extent that they punish senior lenders (those designated to monitor
1

the firm's behavior) for failing to detect a misbehaving firm. Finally, Bebchuk and Picker (1993)
propose that APR violations reduce the incentive of an ownerlmanager to select inefficient
"insider" projects whose values are highly dependent on the manager's personal skills, and
encourage the ownerlmanager to invest in his own human capital. Both of these effects suggest
that APR violations are ex ante beneficial.
All of these papers, however, deal with moral hazard problems of one sort or another;
whether or not APR violations are beneficial depends on which problem the firm faces at the
time of the initial contracting. In what follows, we show that APR violations need have no
impact on the firm's ex ante investment decision, either directly by affecting its risk incentives,
or indirectly by changing the lender's incentives to monitor the firm. Instead, APR violations
make credit rationing more likely: The more the debtor receives in default states, the lower the
threshold at which increases in the interest rate reduce the lender's expected return. Furthermore,

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we demonstrate that APR violations also reduce social welfare by making default, which is
costly, more likely to occur.

3. A Model with Debt and APR Violations
Consider a risk-neutral economic actor living in a two-period world.

We may

alternatively think of this actor as an individual consumer or as a firm. In the first case, we
assume that the individual has some random income in period two, but wishes to consume some
good that costs I in the first period; this good might be education, a house, a car, or some other
consumer good. In the second case, we can think of the firm as having some project in which
it can invest I in the first period to obtain a random return in period two. In either case, the
agent dies at the end of period two, and the good/investrnent chosen in period one has no residual
value. In what follows, we will use the "firm" terminology, but it should be clear that either
interpretation would work equally well.
Since the firm has no initial endowment, it must raise funds from an outside investor.
We will assume a costly state verification environment (Townsend [I9791 and Gale and Hellwig
[1985]), letting c be the ex post cost of state verification. As a consequence, debt is the optimal
financial ~ontract.~Let 6 denote the gross payment (principal and interest) due the investor
(henceforth called the lender) in period 2; for ease of exposition, we will o2ten refer to 6 as "the
interest rate." In addition, assume that the market of potential lenders is perfectly competitive,
that all lenders are risk neutral, and that the riskless rate of interest is one, so that all lenders
Strictly speaking, we are assuming that state verification is perfect and that it occurs in a
deterministic manner. If stochastic verification is allowed, the simple debt contract will not, in general,
be optimal (see Townsend [I9791 and Border and Sobel [1987]). We will discuss the implications of this
assumption in section 5.

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have a reservation return of I.
Let x denote the project's return in period two and n(x) be the distribution function for

x; as is standard, denote the density function by ~ ( x )which
,
is strictly positive on its support

[z, XI . To make the problem interesting (i.e., to have some risk involved), assume I > -x .

Since

we are interested in the impact of APR violations, let y denote the payment the borrower receives
in default states.
X
-

Finally, to avoid unlimited liability problems for the investor, assume

> C +y.
The borrower's expected return is then

The lender's expected return is

DEFINITION:
A competitive equilibrium in this market is defined by an interest rate 6' that
maximizes the borrower's expected return subject to the constraint that the lender earns
zero expected profits,

and subject to the borrower's expected return being non-negative.

Technically speaking, there is always an autarkic equilibrium in which no lending occurs. In this
equilibrium, 6 may take any value, since it .is never offered to the borrower.

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Equilibrium is characterized by the following proposition:

PROPOS~ION
1: In any competitive equilibrium in which lending takes place, the lender's
expected return is non-decreasing in the face value of the debt (i.e., L,(6*,I,y) 2 0) and

the borrower's expected return is non-increasing in the face value of the debt (i.e.,
B,(6*,y) I0). Lending will occur in equilibrium only when the cost of state verification,
c, and the payment to the firm in default, y, are suflciently small.

Proof: Direct differentiation of (1) and (2) verifies that

and

These conditions provide the required upper bound on c and y, and imply that B (6,y) will be
decreasing in 6 -wheneverL ( 6,I, y) is increasing in 6.
Suppose there exists a 6* that satisfies the definition of an equilibrium interest rate, but
that L,(a8,1,y) < 0.
6'

E

We will show that this cannot occur:

Either there exists some

(x,6*)
- such that L(6',I,y) = 0 , B,(6/,y) I 0, L,(6/,I,y) 2 0, and B(6/,y) 2 B(6*,y),

or there is no lending in equilibrium.
If no 6' such that L,(6/,I,y) 2 0 and L (6/,I,y) = 0 were to exist, we would have

which is a contradiction, since I >

x; in this case, we have the autarkic equilibrium.

If such a

6/ does exist, the fact that B,(6/,y) I 0 follows immediately from (4) and (5) above. Finally,

8

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note that

Thus, B (6' ,y) - B (a*,y) = c (II(6*) - II(6')) 2 0 , since 6* 2 6'. Thus, B (6/,y) 2 B (a*,y).

(I,

This proposition implies that if multiple choices of 6 satisfy L(6,I, y) = 0, then the smallest such
6 will be the equilibrium.
Of course, when a lending equilibrium exists, the APR violations that will occur in default
states will be anticipated. As a consequence, the borrower must pay a premium ex ante; i.e., he
must pay a higher interest rate. One might imagine that the borrower's expected return in
bankruptcy states would exactly cancel his expected added interest costs. This, however, is not
the case. To see this, note that the impact of an increase in y on the borrower's expected return
is

To calculate the change in the debt payments due to an increase in the APR violation, we totally
differentiate (3):

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Finally, we substitute (9) into (8) and simplify to get

The denominator of this expression is the change in the lender's expected return due to an
increase in the face value of the debt, and is positive by Proposition 1. The numerator is clearly
negative, showing that the borrower's expected return is decreasing in y.
This fact is an immediate consequence of the optimality of simple debt in a costly state
verification environment, and its intuition is straightforward. Violations of the APR reduce the
lender's expected return from default states. As a consequence, the lender must receive a larger
payment in nondefault states, i.e., the face value of the debt must be larger to maintain the zero
profit constraint. But a larger face value for the debt means that default will occur more often,
which implies its deadweight costs will be incurred more often as well. Notice that if c, the
deadweight cost of state verification, were zero, then the level of y would have no impact on the
borrower's expected return. But, of course, simple debt would no longer be the optimal financial
contract if this were the case.
Because ex post state verification is costly, the results of Townsend (1979) and Gale and
Hellwig (1985) assure us that debt is, in fact, the best way for the investor to advance funds to
the firm. And as a consequence when lending occurs in equilibrium, the existence of APR
violations, while beneficial ex post for a borrower in default, actually reduces the borrower's ex
ante expected return. The next logical question, then, is how APR violations affect the lender's

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willingness to make loans in equilibrium, i.e., whether they change the likelihood of credit
rationing. It is to this question we turn in the next section.

4. APR Violations and Credit Rationing
A necessary starting point for our analysis is to define what we mean by "credit
rationing." Simply stated, credit rationing occurs whenever excess demand for credit remains in
the market in equilibrium. Since the market is in equilibrium, by definition there is no pressure
for the interest rate to increase to clear the market, as is the case in the classical Walrasian
model. In our model, credit rationing means that no lender is willing to provide the firm's
required investment because the interest rate cannot rise enough to ensure that his zero profit
constraint (3) is satisfied.
Why can't this occur? The deadweight loss imposed by state verification and the transfer
due to the APR violation reduce the lender's expected return in default states. Eventually,
increases in the interest rate make default so likely that these costs outweigh the higher return
the lender expects to receive in nondefault states. Figure 1 shows L graphed as a function of 6,
holding I and y constant. As 6 gets larger, L eventually slopes downward.'
Define

8

as the interest rate that maximizes the lender's expected return given the

Note that L is not necessarily a concave function of 6. All of our results, however, hold true
regardless of the shape of L.

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magnitude of the APR violation, y9

Since increases in I cause L ( 6 , I , y ) to shift down vertically, we can defme T ( y ) as the largest
investment that is feasible for the lender to finance: L

,

) = 0. Totally differentiating this

-

expression with respect to I and y gives us

Notice that 8 is not a function of I, because changes in I are merely vertical shifts of L(6,I,y); such
shifts do not change the location of the extremum, 8, only the value of the function at the extremum.

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thus proving:

PROPOS~ION
2: Larger APR violations increase the magnitude of credit rationing by reducing
the size of the largest project that will allow lenders to earn non-negative expected profits.

Figure 1 illustrates the effects summarized in Proposition 2. Holding I constant, an increase in

y shifts L down and to the left.''

As a result, loans that will be made when the APR violation

is yl will not be made when the APR violation is increased to y, - the resulting decrease in the
lender's expected return makes loans of I, infeasible. The largest loan a lender is willing to
make is, instead, I, < I,.

5. Conclusions
In this article, we have demonstrated that APR violations can exacerbate credit rationing
problems. By lowering the lender's expected return and increasing the cost of default, deviations
from the APR make fewer loans profitable for lenders. To the extent that existing bankruptcy
law makes APR violations more likely and makes bankruptcy more costly, our results imply that
they make credit rationing problems more intense.''

loTechnically, this leftward shift depends on the concavity of L with respect to 6. In this case, it is
proven by totally differentiating the first-order condition that defines 8. Our results, however, depend
only on the downward shift, which occurs regardless of whether L is concave in 6.

l1 See Bebchuk and Chang (1992) and Brown (1989) for theoretical models suggesting that the
structure of Chapter 11 does, in fact, make APR violations more severe.

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This is particularly a problem with respect to loans for individual consumers. As noted
before, individual debtors may violate the APR unilaterally by "exempting" some of their assets
from the property of the estate. Although the Code allows states to opt out of this provision,
individuals may exempt property listed in ยง522(d) of the Code, or if their state allows more
generous exemptions, they may follow the state's rules instead. Assets that are typically exempt
under both state and federal law include an interest in a house, automobile, jewelry, clothing, and
other personal possessions; the total value of such assets generally varies from state to state.''
This variance in the level of allowed exemptions may provide a means of testing the
conclusions reached in this paper. In particular, the results above suggest that consumers in
states that allow more generous exemptions would, ceteris paribus, pay higher interest rates and
be offered less consumer credit than would borrowers who live in states with smaller exemptions.
This paper has also pointed out that APR violations can be inefficient ex ante even when
they have no impact on a borrower's investment incentives. This insight becomes particularly
important when one considers consumer applications of the model. In these cases, the typical
moral hazard story in which the borrower must choose the distribution of future revenues makes
little sense. Since most conclusions about the efficiency or inefficiency of APR violations
depend on these moral hazard models, they are most relevant when the borrower is a fm. In
contrast, the optimality of the simple debt contract in a costly state verification environment
implies that APR violations have negative ex ante consequences for both businesses and
individual borrowers.

l2 One notable state is Texas, whose homestead law exempts a rural family home of up to two hundred
acres regardless of worth. See Weintraub and Resnick (1992), fl 4.07.

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Our analysis must be considered with at least one caveat. Boyd and Smith (1993) also
note that adherence to the APR can be thought of as nonstochastic monitoring in a costly state
verification environment.13 In contrast, the optimal contract when stochastic monitoring is
allowed typically involves some element of debt forgiveness - i.e., a violation of the APR,
similar to that proposed by Harris and Raviv (1993). Since we have selected a costly state
verification framework for our model, at least one of the theoretical benefits of APR violations
is present. A more comprehensive model would measure the relative costs we develop here with
the benefits of stochastic state verification to evaluate the true impact of APR violations. Our
primary conclusions about APR violations and credit rationing, however, are unaffected by this
issue.

l3 Boyd and Smith point out that the APR and nonstochastic monitoring are not strictly synonymous.
Rather, they "associate an absolute priority rule with nonstochastic monitoring because - if stochastic
monitoring were easy to implement - there would be no reason to have an interest in absolute priority
rules in this environment" (Boyd and Smith [1993], footnote 4).

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