Modigliani and Miller, 1963 v Trade off model - Kraus & Litzenberger, 1973
I hope you have all had a fun week! This week’s post is going to focus on capital structure, with main references to Modigliani and Miller (1958). How much do you know about company’s capital structure? Probably not much, so read on!
I hope you have all had a fun week! This week’s post is going to focus on capital structure, with main references to Modigliani and Miller (1958). How much do you know about company’s capital structure? Probably not much, so read on!
What is the most efficient, effective and relevant way for a
company to structure its capital? Does it change between companies? Does it depend
on the size of the business? Is that even of relevance to the capital
structure?
Businesses have the choice to either be financed by debt or
by equity, or by a bit of both. What do you think is the best way to finance a company?
Modigliani and Miller theorem (1958),
also known as ‘capital structure irrelevance principle’ highly believed that it
did not matter if a company was financed with either debt or equity. They
believed that the value of the business depends on its risk. However this was at first a highly rejected
theory. Many limitations were found with this theory in 1958: no taxation
mentioned, no perfect information is always available and markets were assumed
to have strong form efficiency - the theory was not uniform enough to make complete
judgements from. However, they realised this and in 1963 Modigliani and Miller added
taxation to their theory to make it a normative and unified. The 1963 theory
was way more accepted as it was a ‘real world’ approach.
(Modigliani and Miller theorem, 1963).
Surely this would have swayed people
to agree with them? Many did, many didn’t. Modigliani and Miller (1963) assume that it
doesn’t matter what the gearing (debt/equity) is, what really matters is the firm’s
value which is determined solely by business risk.
Modigliani and Miller advice companies to always finance through debt, is this sustainable? High gearing can
negatively impact the economy and businesses.
However the trade-off model (Kraus
& Litzenberger, 1973) contrary to Modigliani and Miller, assumes that
companies choose the amount of debt and equity finance to use by balancing
benefits and costs. Do you think this model is better than Modigliani and
Miller? I think so. Having both debt and equity finance allows tax benefits,
which increased the gearing to a safe level and having half debt, half equity
allows a discount rate for potential projects the company may want to invest
in.
The trade-off model assumes that
weighted average cost of capital (WACC) will initially fall and at some point
will hit rock bottom. Decreased WACC = decreased risk. But we must ALWAYS
consider financial distress costs. A high level of debt will equal to a high
level of financial distress, is this another factor against Modigliani and
Miller? At high levels, financial distress cannot be ignored. Particularly when
there is uncertainty in supplier’s minds. High financial distress can lead in
bankruptcy costs.
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| (Trade off model - Kraus & Litzenberger, 1973) |
To me I think that the trade-off
model represents a more realistic view of capital structure. Modigliani and
Miller seems too good to be true, and does not represent the world that we live
in which is definitely not a perfect one. Trade off model takes into account that things
can change, and that companies should only borrow as much as they can afford
(AKA reasonable level).
What do you think? Which model do you think is more
sustainable? Thanks for reading this blog post, and I hope you found it
interesting! Please leave your comments and opinions below and let me know what
you think. Until next week.
Laura


