Re: Loans Create Deposits or Deposits Create Loan Positions?

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Jay Mills

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Jun 17, 2026, 8:53:37 AM (3 days ago) Jun 17
to Modern Monetary Theory
Warren et. al.,

I’ve come to accept the notion that at loan origination - loans create deposits. This seemed like an important explanation connected to QE and the notion that banks don’t lend reserves and increasing them would not automatically increase loans and inflation.

That said, I’ve read more and spoken to more folks and have a bit of confusion.

Loan departments are given, from bankers I’ve spoken to, an approximate amount of loan growth they can expand. This is based on many factors (loans to deposit ratio, LCR, quality of borrowers, etc.). They predicate much of their limit on their deposit base since most come into banks with corresponding reserves and is a cheap funding position for banks (they pay so little on deposits to earn cash/reserves versus money markets, CDs, borrowing reserves etc.).

Another fact is that on the asset side of their balance sheet, banks pool cash/reserves when considering inflows/outflows and netting positions each period depending on how they’re settling (Fedwire, etc.). So while a bank isn’t loaning your deposit in a literal sense, your deposit brought in cash/reserves that sit on the banks asset side in a pool of money that is used to meet LCR/requirements and settle payments out of the bank. So when someone/banker says they use your deposit to loan, in a sense they’re not wrong.

Simply put:

1. Banks have chosen deposits as the number 1 way to fund loans (cheapest)
2. Those deposits are liabilities to the bank but the corresponding cash/reserves from incoming deposits are pooled and do serve to settle payments/fund the loan
3. Yes at the specific point of origination a brand new deposit is created and wasn’t reduced from somewhere else and then reallocated to the borrower.


Does this line up? Also, I think I have missed the specific reason Warren, Mitchell, etc. really hammer home on the idea that loans create deposits. Is it to demystify the fact that there are not a fixed supply of loanable funds?

Thanks for any help in this!

Best,

Jason

Warren Mosler

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Jun 17, 2026, 9:15:03 AM (3 days ago) Jun 17
to Jay Mills, Modern Monetary Theory
Let me add that yes, causation runs from loans to deposits, but the depositor then has the option of leaving his deposit balance at that bank or transferring it to another bank. If he decides to transfer, his bank can't do that without 'replacing' the deposit. And since most borrowers transfer at or soon after borrowing, the bank needs 'replacement' deposits to honor the transfer. 
Note too that the obvious replacement deposit is an overdraft in the bank's Fed account. Operationally allowing unlimited Fed overdrafts makes it all seamless. Restrictions on said overdrafts are 'self imposed constraints' that create obstacles and costs without benefits.
Warren  

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Warren Mosler

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Valance Company, Inc.

MMT White Paper

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Warren Mosler

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Jun 17, 2026, 9:15:37 AM (3 days ago) Jun 17
to Jay Mills, Modern Monetary Theory

On Wed, Jun 17, 2026 at 6:53 AM Jay Mills <jasonmi...@gmail.com> wrote:
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Jay Mills

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Jun 17, 2026, 9:31:55 AM (3 days ago) Jun 17
to Warren Mosler, Modern Monetary Theory
Thanks for clarifying and confirming my understanding! 

That said, what banking/macroeconomic reason did you and Bill Mitchell focus on the line “loans create deposits”?

Thanks again!

Jason

Warren Mosler

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Jun 17, 2026, 9:37:01 AM (3 days ago) Jun 17
to Jay Mills, Modern Monetary Theory
On Wed, Jun 17, 2026 at 7:31 AM Jay Mills <jasonmi...@gmail.com> wrote:
Thanks for clarifying and confirming my understanding! 

That said, what banking/macroeconomic reason did you and Bill Mitchell focus on the line “loans create deposits”?
Academic tradition...
I pointed out lending is a subset of spending.
Spending can be for non financial assets or financial assets.
The general case is that all bank spending is via crediting accounts on its books=deposit creation.
Lending is the purchase of a financial asset- the signed note of the borrower for example.
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Bijou Smith

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3:46 PM (6 hours ago) 3:46 PM
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How about with the software payments systems?  They do not automatically fetch a replacement deposit, right?  That's accounting done later in what used to be a settlement period (a bit of an anachronism I'd say, with electronic records these days being easily backed-up redundantly).  The loan is the bank asset, so they'd be fine not fetching a replacement scorepoint. Have things changed in modern times with more banking automation?  (Regarding softwares: Werner stood over some banking nerds and checked that for a German bank. I gather you could arrange that check anywhere with a genial banker who can be bothered doing a dummy $billion transfer offline.)
It's just the likes of Basel rules/prudential-legal requirements that force a bank to go around fetching "replacement" scorepoints, right?  There is no fraud or moral hazard involved in an overdraft ... so long as it exists as an accounting record.

Jay Mills

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4:37 PM (6 hours ago) 4:37 PM
to Bijou Smith, Modern Monetary Theory

I agree that the software/payment system does not automatically go out and “fetch a replacement deposit” in the retail sense. If a bank originates a loan, the accounting entry can be made by crediting the borrower’s account, and if the borrower transfers the funds elsewhere, the payment system then has to settle that outgoing payment through the relevant settlement rail.

Where I am still trying to be precise is the difference between loan origination, payment settlement, and ongoing funding.

At origination, I understand the point that the bank creates a loan asset and a deposit liability. It is not literally taking an existing depositor’s balance and transferring it to the borrower.

But once the borrower spends the proceeds, the originating bank may lose reserves or settlement balances to another bank. At that point, it needs some way to handle the outflow: existing reserves, incoming payments, intraday credit, repo, FHLB advances, wholesale funding, replacement deposits, asset sales, or central-bank credit.

So I think the replacement issue is not part of the origination accounting entry, but it is still very real for settlement and liquidity management. Even if all the records are electronic, a negative Fed balance or overdraft is still credit from the central bank, not just a neutral scorekeeping entry. It may be operationally seamless if permitted, but it still raises questions about pricing, collateral, credit risk, supervision, and moral hazard.

I also agree that some of these constraints are institutional and self-imposed in the broad sense. The central bank could design the system to allow more automatic overdraft capacity. But under the current system, banks do not have unlimited costless overdraft access, so they actively manage deposits, reserves, liquid assets, collateral, and funding sources.

So my current synthesis is:

Loans create deposits at origination. If the created deposit leaves the originating bank, the bank must settle the payment. The payment system does not fetch replacement deposits automatically, but the bank must obtain or use settlement liquidity in some form. Prudential rules like LCR and Basel formalize this discipline, but the underlying need to settle payments is not merely regulatory. It is part of the payment-system architecture.

Does that sound like a fair framing of the distinction?


Jason

Warren Mosler

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10:05 PM (9 minutes ago) 10:05 PM
to Jay Mills, Bijou Smith, Modern Monetary Theory
Yes




Warren Mosler

Candidate for Governor

Valance Company, Inc.

MMT White Paper

'The 7 Deadly Innocent Frauds' 
http://moslereconomics.com/wp-content/powerpoints/7DIF.pdf





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