Relearning Economics Profile picture
Nov 15 12 tweets 2 min read Read on X
You'd think the field that studies money would have a solid grasp of how it works.

But mainstream economics still teaches that banks are intermediaries, loans come from savings, and governments can run out of money.

None of that sh#t holds up.
🧵1/12 Image
The textbook story starts with loanable funds: households save, banks lend those savings, and interest rates tidy everything up.

Nice f#$king story.

Also wrong.
🧵2/12
Banks don't lend out savings.
They create new deposits when they make a loan, literally by typing numbers into an account.

What actually constrains them is capital rules, regulation, and credit risk.
📎 BIS (2016)
🧵3/12
This isn’t fringe.

Central banks are clear, loans create deposits, the need for reserves comes after and reserves are supplied as needed.

The whole sequence runs opposite of what most economists still learn.

📎 Bank of England (2014)
🧵4/12
Yet macro models keep leaning on a representative household whose savings supposedly fund investment.

This imaginary person is doing the work actual balance sheets do.

It's sh#tty physics envy. Nothing more than that.
🧵5/12
The confusion gets worse when it comes to government finance.

A currency-issuing government doesn't borrow like a household.

It spends by creating new liabilities and taxes by deleting them.

Bond sales just swap one type of private asset for another.

📎 Kelton (2020)
🧵6/12
When the government sells bonds, it’s not raising money, it's just swapping bank reserves for interest-bearing securities.

All that changes is the form of the private sector's assets, not the government’s ability to spend.

The accounting moves, the capacity doesn't.
🧵7/12
Inflation gets the same treatment.
It’s still framed as too much money chasing too few goods, ignoring energy, supply chains, administered prices, and global shocks.

Money is blamed because it's the simplest story.
📎 Storm (2022)
🧵8/12
Why does all this persist?

Because the models came first, and reality was squeezed in later.

It's easier to bolt on frictions than rethink the core assumptions about equilibrium, rational expectations, and loanable funds.
🧵9/12
The reality is simple:

Money is a set of balance-sheet relationships.

Its creation is institutional.

Its effects are distributional.

And the real constraint is resources, not financial assets.
🧵10/12
Until macro takes money seriously, banks, balance sheets, liquidity, payment systems, instability, it'll keep missing what actually drives modern economies.
📎 Minsky (1986)
🧵11/12
Economists don't misunderstand money because it's mysterious.

They misunderstand it because their models assume it away.

If you want to understand the real economy, follow the balance sheets, not the textbooks.
🧵12/12
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More from @RelearningEcon

Nov 13
Neoclassical and New Keynesian (NK) DSGE models both claim to explain the macroeconomy.

One assumes perfect equilibrium. The other adds a few "frictions."

Under the hood, they share the same broken core.
🧵1/12 Image
Start with old-school neoclassical DSGE.

Perfectly rational agents, perfect competition, instant market clearing.

Unemployment is just "leisure," crises are accidents, and everything glides back to equilibrium.
🧵2/12
New Keynesians looked at that fantasy and said: "OK, but prices seem slow."

So they added sticky prices, some adjustment costs, maybe a Calvo fairy.

Same world, just a bit sluggish.
🧵3/12
Read 12 tweets
Oct 26
Fractional reserve banking is one of the most persistent myths in economics.

It sounds technical, but it describes a world that no longer exists, and pretending it does keeps us misunderstanding how banks actually create money.
🧵1/12 Image
The fallacious story goes like this: banks take deposits, keep 10% as reserves, and lend out the rest. That fraction supposedly limits how much credit they can create.

But since March 2020, reserve requirements in the U.S. are zero. There is no fraction.
🧵2/12
Banks aren't lending "most" of your money while keeping "some" safe.

They're not required to hold any portion of deposits as reserves.

The old 10% model is gone.
🧵3/12
Read 12 tweets
Oct 7
We're told central banks fight inflation by raising rates.

But rate hikes don't "cool" the economy, they just change who gets paid.

So why is it that interest rates don't actually control inflation.
🧵1/12 Image
The textbook story: higher rates → less borrowing → lower demand → lower inflation.

Simple, right?

Except it rarely works that way in reality.

BIS (2023), The Transmission of Monetary Policy Revisited
🧵2/12
First, interest income.

When the Fed raises rates, it pays more interest on reserves + Treasuries.

That means more income for banks, funds, and wealthy asset holders.

Not a drain, a fiscal expansion.

Fullwiler (2017) Interest Rates and Fiscal Effects of Monetary Policy
🧵3/12
Read 12 tweets
Sep 27
Every time deficits rise, someone cries "money printing."

Sounds scary, but it's a misleading metaphor.

Here’s why deficits aren’t printing presses, and what they actually do.
🧵1/12 Image
Story: gov't spends → prints money → inflation.

Reality: spending credits bank accounts, creating deposits, matched by Treasuries. Balance sheets, not printing presses.

Fujiki (2001), Budget Deficits and Inflation - BOJ
🧵2/12
Actual "printing press" inflations, Weimar, Zimbabwe, came from collapsing output + foreign debt. Deficits were a symptom, not the cause.

Reinhart & Rogoff (2011), From Financial Crash to Debt Crisis - NBER
🧵3/12
Read 12 tweets
Sep 20
Balanced budget rules sound responsible.

In reality, they make recessions worse.

A thread.
🧵1/12 Image
The idea is simple: governments should not spend more than they tax.

No deficits, no "irresponsibility."

But economies don't work like households, and enforcing a balanced budget creates vicious cycles.
🧵2/12
When recessions hit, private spending falls.

That's when governments need to step in, raising demand, supporting incomes, and stabilizing the economy.
🧵3/12
Read 12 tweets
Sep 10
Treasury auctions sound like "the market funding the government."

But peel back the layers, and you'll see: all primary auctions are settled with reserves created by the Fed.

A thread.
🧵1/13 Image
Every week, the Treasury issues new securities at auction.

Primary Dealers are OBLIGATED to bid. Indirect bidders (pension funds, foreign central banks, asset managers) now take 90% of the allocations.
🧵2/13
But here's the key: all bids clear through Primary Dealers with accounts with the Fed.

Indirect bidders and some Primary Dealers don’t have accounts at the Fed. They place orders through dealers.

Settlement happens inside the Federal Reserve’s payment system.
🧵3/13
Read 13 tweets

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