MY exploration in the dictionary didn’t help much . One
definition said that marginal is something found only at the outer limits and
therefore is not of central importance. Another definition referred to
something on the edge. A third applied the term to apparently less important
words written in the margins of a page. Since I had not yet taken on the habit
of JD I had little to relieve my marginal headache. I felt even worse when I
found the following example of the use of the word marginal – “having reviewed
the test, there are two students below the required standard and three more who
were marginal.” I wondered who those other students were. The confusion is that while marginal often
refers to things that are not very important – when you have been branded "marginal" like
these students – that seems pretty important. It might mean the difference
between moving on to the next grade or staying another year with the same mean,
ugly, and hateful fourth grade teacher at Coconut Grove Elementary School.
When I took my first economics course at Georgia Tech, Professor
Schaffer told me that marginal was critical to understanding decisions.
Marginal helps to concentrate the most important factors when making a
decision. So let’s suppose we are trying to decide whether or not to walk down
the street while texting. On the one hand, there are benefits from this course of
action. I can walk down the sidewalk and Tweet to all my friends about how
wonderful I feel walking down the street. Let’s call that the marginal benefit
of the decision. On the other hand, there are also new costs associated with
this decisions. It is quite possible that while I am texting I might walk into
a tree or a parked Vespa. Then I would have to go to the hospital.
Hospitals
are costly. Let’s call that the marginal cost of the decision. I can’t speak for you but let’s say I believe
the MB is greater than the MC. Then I make the decision to go ahead and text
while walking. Of course if the MC is greater to you than the MB, then you
decide not to text while walking. Advanced math explanation:
·
MB > MC then do the action
·
MB< MC then do not do the action
·
MC is an important concept despite the marginal
stuff written about it in the dictionary
Last week my post was critical of plans to increase marginal
tax rates on the rich. After 396 pages of detailed and insightful analysis, I
left out a couple of things. I mentioned that an increase in the marginal tax
rate for the upper 2% might not be good for the economy. I suggested it could
lead to another recession in the USA as soon as 2013. But I didn’t explain why.
So let me carry on that argument.
Let’s suppose on some planet that resembles Earth that the
marginal tax rate for incomes above $200,000 per year was 100%. Let’s call
that planet Obiden. The marginal tax rate for incomes equal to or less than $200,000
on Obiden is 35%. Jim lives on Obiden
and runs a manufacturing company that makes Obiden T-shirts. Jim loves to surf
on the Han River in his spare time and also enjoys spending time with his
family playing checkers and Mass Effect 2.
Jim’s business is doing well and he is thinking of hiring
more people and adding a new manufacturing location in a right-to-work state
named Michi on Obiden. Michi looks a lot like the outline of my left foot. Anyway,
Jim has a crack accountant named Kilt who explains over a couple of Heffe
Weitzens that if his income goes above $200,000 he will not get a penny of the
increase. With the 100% marginal tax rate on incomes above $200,000 any income
he earned above $200,000 would all go to the government for good deeds. Jim would pay 35% of $200,000 (=$70,000) as
his tax. If he made, for example $250,000, he would pay the $70,000 in tax plus
another $50,000.Thus his average tax rate would increase to 48%. In this example
the government raises revenue, it raises the average tax rate, and it does it
by increasing the marginal tax rate.
My liberal friends who are still awake would scream – Larry
– no one is proposing a marginal tax rate of 100%. Then they would call me a
lot of names and hang up on me. But extremes are often used to make legitimate
points. For example, Democrats often depict rich people as selfish and beyond
any real empathy for the poor. That extreme view of rich people makes it easier
for them to want to punish rich people and confiscate their income and wealth.
But the general point is made. When it comes to the decision
to expand Jim’s factory and hire more people on Obiden, it is the marginal tax
rate that matters the most. The
definition of marginal is what Prof. Schaffer taught us smelly freshmen – the
marginal tax rate is critical for making decisions since it applies to MORE or NEW incomes – not to all our income. When we raise the rate of taxation on wage
income, on dividends, or on capital gains on the highest or last income earned
– we are directly impacting decisions that involve change. Changing average tax rates has no such
extreme effect.
We don’t know what the critical marginal tax rate is for the USA. Maybe
the current rates are already too high for economic expansion. Maybe they are
too low. Maybe 39% is too high. No one knows for sure. But you are definitely
flirting with danger when you raise these rates at a time when most people are
predicting a slowdown in the US economy in the coming months.
When we say rich people we have some idea that these super
rich individuals (with incomes over $200,000????) can easily and gleefully
absorb the marginal tax increase. And maybe some would or could. But this
defies Prof. Schaffer’s lessons. Marginal tax rates impact decisions. Raising
MC relative to MB is never a good thing for output and employment. Think of the
kinds of decisions that might be made as those with incomes above $200,000
react to the new and higher marginal tax rates:
·
Cut or do not expand output and employment
·
Delay output and employment to a future time
when marginal rates might be lowered
·
Work less and take more leisure
·
Move output and employment to another location
in Mexico or Canada
·
Consume less as you prefer to not sell stocks or
bonds so as to postpone capital gains
·
Consume less as you move from dividend stocks to
non-dividend stocks deferring gain to the future
·
Sell your worst stocks at a loss – the benefit
of capital losses against taxes is now higher. This reduces your wealth and your
desire to spend
These are a few behaviors to note but certainly there are
more. The general idea is that raising marginal tax rates reduces the incentives to work, to produce, and to invest. Use the comment section on the blog to tell me what I missed. How else do increases in marginal tax rates cause negative effects?
The main idea should not be lost in the details – raising
marginal tax rates create perverse incentives for economic growth. It is
possible to raise revenues in such a way that these perverse impacts are
minimized. If part of the political solution to current deficit/debt challenges
is raising tax revenues on the wealthiest Americans, then more thought should be
given as to how to do this. Capping deductions and similar schemes can impact
the rich more than others and might have smaller undesirable impacts on
economic growth. It goes without saying, however, the more we restrain unbridled
government spending the less has to be done in the way of tax revenues. But
that’s another topic and you have shopping to do. So let’s carry this on later.