I have not finished the Wray book on MMT [Modern Monetary
Theory, or Modern Money Theory, depending on whom you ask] but I am more than
200 pages into it and ready to tell you what I have learned. My son, Patrick, who recommended Wray’s book,
says it is not so much a theory [with models, predictions, evidence, and so
forth] as an analysis, and I think he is right, but whatever it is, it is
striking, surprising, counterintuitive, and – interestingly enough – not new,
as Wray makes clear.
Here we go, the blind leading the sighted. Stop me if I bump into something.
Big, strong, no-nonsense nations issue their own currency
and will take no other. They have sovereign currencies. That is what I shall be talking about. Wray dutifully spends a good many pages
talking about all the weenie countries that are unable to issue sovereign
currencies, and also about the rather odd case of the Euro, but that is not what
he is really interested in, and neither am I.
Furthermore, we are talking about floating currencies, not currencies
tied to a pile of gold or silver or cowrie shells or whatever.
We can boil the entire book down to two propositions, the
second of which follows from the first.
They are simple propositions, and they are, once you think about it, obviously
true, but the second in particular is these days utterly rejected by everyone,
left, right, and center. The policy
implications will be immediately obvious.
The first proposition is that in a country like the United
States with a floating sovereign currency, the currency – say, a bag full of
dollars – is a collection of IOUs issued by the government. IOU, recall, is short for I Owe You. It is a promise to pay, issued, for example,
by someone who loses big at a friendly poker game and doesn’t have enough money
to pay the debt, or by a heavy drinker who runs a bar tab. The issuer of the IOU has assumed a debt by issuing the IOU. The recipient of the IOU [the bar owner, say],
by accepting the IOU, has acquired a credit.
It is an obvious accounting truth that the sum total of all the debts
assumed by IOU issuers and the credits acquired by IOU acceptors is 0. There is nothing deep or puzzling about this,
it is just a trivial conclusion from the meaning of IOU. If the debtor pays the debt, the IOU is
returned to him or her by the lender.
The debtor is now in possession of the original IOU, which cancels out
the debt. The little piece of paper on
which is written “IOU $10” can now be crumpled up and thrown away. Bank loans are just like IOUs, except that
they are kept track of nowadays with key strokes, not pieces of paper. A bank loan is an IOU issued by a borrower to
the bank, by a home buyer, perhaps, or maybe a small business owner. A bank deposit is also an IOU, but this time
it is an IOU issued by the bank to the depositor. When I have money on deposit at a bank, the
bank owes me.
Now, in a country with a floating sovereign currency, all of
the money circulating, whether in coins or bills or checks drawn on banks or
whatever, consists of IOU’s issued by the government. Take out a dollar bill and look at it. On the front in the upper left, printed in
small letters, are the words “This note is legal tender for all debts, public
and private.” That means that both the
government and private lenders must accept this dollar bill as payment of, or
cancelling out, a one dollar debt.
So far, this is pretty simple and not at all
controversial. That is what dollars are. But why should anyone want to have dollars,
in whatever form? This is slightly
trickier, so follow along. The simple
and obvious answer is, “to buy stuff with.”
But why should someone selling stuff be willing to give it to me for
these pieces of paper [or keystrokes – it doesn’t matter]? The superficial answer is, “because with it
he or she can buy from someone else something that he or she wants.” But that is really not any sort of answer,
Wray suggests. It just kicks the can
down the road. Au fond, as the French like to say, why does anyone in America want
dollars?
And now Wray lays his big surprise on us [or at least on me
-- maybe this was obvious to the rest of you.]
Ultimately, Americans need dollars because the United States imposes taxes
on us and, being sovereign, can get away with only accepting dollars in payment. Now dollars, as we have seen, are the
government’s IOUs, and in order to pay our taxes we need these IOUs issued by
the government. And the way we get the
IOUs is by having the government put out these IOUs, which is to say by
spending.
Which brings us to Wray’s second proposition, the real
humdinger:
Governments do not
tax in order to spend. They must spend
in order to tax.
When a government taxes, it collects up IOUs it has already
issued. How did the people paying the
taxes get those IOUs with which they pay their taxes? Well, this is a nation with a floating sovereign
currency, so nobody else is issuing IOUs which the government will accept, and
there is nothing like gold that can serve as a substitute. Those IOUs are out there, available to pay
taxes, only because the government has bought something, spent some money, and
paid for it with an IOU!
And that is fundamentally the whole story. There is a lot of mind-numbing stuff about
the Fed and the Treasury and the difference between them and the relationship
between them, along with more detail than I can or want to absorb, but the
whole story resides in those two propositions.
Does Wray think therefore that sovereign governments can
spend without limit? Yes, they can, but
it may not be wise to do so, because once you have hit full employment, more
spending is simply inflationary. And so
forth and so on. Does Wray think this
analysis entails any particular social policy?
No, but it does lay to rest certain objections to social policy
proposals that seem now to be accepted by everyone [except Alexandria
Ocasio-Cortes and friends, but that is another matter.]
Anyone who objects to government spending on the grounds that
the government has run out of money simply does not understand what money is in
a nation with a floating sovereign currency