Pay $200 toward the principal of a bank loan from a deposit account, and two balances can fall together: the money the banking system owes depositors and the money the borrower owes the bank. The deposit does not have to appear in another customer’s account. That is the sense in which repayment can destroy money.
The word destroy describes an accounting change. It does not mean banknotes are shredded, the purchased bicycle disappears, or the bank suffers a $200 loss. To follow the transaction, keep a customer’s spendable deposit separate from the bank’s claim on that customer.
Start with the two entries a loan creates
Suppose a deposit-creating bank grants a $1,000 loan and credits the borrower’s account by $1,000. The bank records a loan asset, because it is owed repayment. It also records a deposit liability, because it owes the customer the account balance.
The borrower has the mirror image: a $1,000 deposit asset and a $1,000 debt. The new spending power is real, but it comes with an obligation. The Bank of England’s public explanation explicitly distinguishes creating money from creating wealth.
Our earlier article on how bank lending creates money follows that first step. Here the important question is what reverses it. The illustration shows the bank’s matching entries at origination; it is a simplified ledger, not a complete bank balance sheet.
Now the borrower buys a $1,000 bicycle. If the shop uses the same bank, its deposit rises as the borrower’s falls. Someone still holds the deposit, and the borrower still owes $1,000. An ordinary purchase changes who holds deposit money without cancelling the loan.
What a $200 principal payment removes
Later, the borrower earns $200 from an employer. Assume the wage payment transfers an existing deposit, with no new lending involved. The borrower then uses that deposit to repay principal.
For a payment at the lending bank, the entries are:
| Bank entry | Change |
|---|---|
| Loan asset: amount owed by the borrower | Down $200 |
| Customer deposit liability | Down $200 |
| Profit from this principal payment alone | No increase |
The outstanding principal becomes $800. The customer’s spendable balance falls by $200, but no recipient gets a replacement $200 customer deposit from this repayment transaction. The bank has a smaller asset and a smaller liability.
The Bank of England’s 2014 account of money creation describes loan repayment as the reverse of deposit creation. Its credit-card example shows a deposit being reduced when the associated borrowing is repaid. The table above applies that balance-sheet logic to hypothetical round numbers, omitting interest, fees and other transactions.
A different bank adds settlement, not another customer deposit
Suppose the borrower pays from an account at Bank B, while Bank A holds the loan. Bank B reduces the customer’s deposit and sends settlement funds to Bank A. Bank A receives those funds and reduces its loan asset.
Across the two banks, customer deposits have fallen $200 and loans have fallen $200. Settlement balances moved between banks. Bank A’s receipt of a settlement asset is not a newly credited deposit for a member of the public.
This example assumes the principal is repaid to a bank that still holds the loan. A loan sold to a nonbank investor involves a different recipient and cannot simply be inserted into the same diagram.
Central-bank reserves and customer deposits serve different holders. The Bundesbank’s explanation emphasizes that a bank still needs funding and central-bank reserves when payments leave for other banks. Creating a deposit does not remove the obligation to settle.
Three falling account balances, three different results
The same $200 decline in a customer’s deposit can have three different counterparts:
| Use of the $200 | What happens alongside the lower deposit? |
|---|---|
| Buying groceries | The seller receives a deposit. |
| Withdrawing cash | The customer receives banknotes. |
| Repaying bank-held loan principal | The bank’s loan asset also falls by $200. |
The departing balance alone cannot identify which transaction occurred.
The Bundesbank’s book-money explainer separates these transactions: a cash withdrawal changes money’s form, while loan repayment reduces book money. Looking only at the departing balance in a banking app hides the distinction.
For the borrower, a $200 principal payment also reduces a liability by $200. Considering only these two changes, net financial worth is unchanged. Liquidity is lower, though: money used to settle debt is no longer immediately available for groceries. That difference can matter even when the balance-sheet arithmetic cancels.
Interest is a cost, not another slice of principal
Imagine a $210 payment consisting of $200 principal and $10 interest. Only $200 reduces the loan principal. The $10 is the price of borrowing and is income to the bank, rather than repayment of an additional $10 of the original advance.
Do not infer that the interest portion must become another customer’s deposit immediately. Paying a bank’s income and paying a shop are different transactions. Nor does the distinction make interest free for the borrower. The clean conclusion available from the example is narrower: the principal falls by $200, although $210 leaves the account.
Where can the borrower find the extra $10 if the original loan created only $1,000? The Bundesbank’s money-creation questions caution against isolating one loan from a changing economy. Income, continuing lending, repayments and asset transactions occur together. Borrowers can earn money already circulating; every interest bill does not require its own matching new loan.
One repayment does not determine the money supply
In a deliberately restricted example, $1,000 of new deposit-creating loans and $800 of principal repayments leave deposits $200 higher. Reverse those amounts and deposits fall $200. That calculation excludes every other transaction.
Actual deposit totals have more drivers. Federal Reserve researchers’ study of U.S. deposit growth during the pandemic identifies credit-line drawdowns, asset purchases, fiscal transfers and saving behavior. It covers a particular historical period, not a formula for today’s deposit growth.
Banks also face credit losses, funding costs, capital requirements and monetary policy. An accounting power to create deposits is not unlimited profitable lending. Equally, the cancellation of a deposit through repayment does not show that repaying debt is bad. It explains where one balance goes; deciding whether or when to repay requires the borrower’s terms and circumstances.
