On May 29, 2026, the most powerful banker in America went on television and called the chief executive of the largest American crypto exchange full of shit. Jamie Dimon was not performing for the camera. He was defending a number.
There is no lawsuit. This is a war of words and lobbying dollars, fought over a single clause in a bill. But listen to what Dimon is actually objecting to. The provision he wants struck would let crypto platforms, in his words, “effectively pay interest on deposits, stablecoins or something like that, without protection that they should have.” The banks, he warned, “will not accept it.” Strip away the insult and the threat, and what remains is a confession. The thing the most successful deposit franchise on earth cannot abide is someone paying its depositors yield.
That single objection tells you where the money is.
A bank pays the national average interest-bearing checking account 0.07% — and most checking accounts pay nothing at all. On the assets those deposits fund, the American banking industry earned a net interest margin of 3.34% in the third quarter of 2025. The gap — better than three percentage points, on trillions of dollars — is the spread. In that single quarter, banks booked $189.6 billion of net interest income, the engine the FDIC itself credits for a record $295.6 billion in full-year 2025 profit.
This is the fact almost no depositor ever sees. “Free” checking is not free. You pay for it in the yield you never receive — the difference between what your money earns in the bank’s hands and the nothing you are handed for leaving it there. The transaction cost of keeping money somewhere did not disappear. It was moved out of the line item and into the spread, where it cannot be read.
The same trick is worked on money in motion. Moving money is a $2.5 trillion global business, and its most profitable tolls are the ones you cannot see: interchange folded into the price of everything you buy, currency markups folded into the exchange rate, interest earned on your money during the days a payment takes to clear. The incumbent does not move money cheaply. It moves money expensively, and hides the bill.
This essay is about that move — the hiding of a cost, and what undoes it. A companion essay traces the same struggle one level up, in the dollar’s grip on the world’s payments; this one stays closer to home, with the bank’s grip on your yield. The argument is simple. The cost of money never went away. The banks hid it. And a technology is now arriving that does one quietly disarming thing — it makes the cost visible. Once a price can be seen, it can be competed toward zero.
The spread you cannot see
Begin with the simplest transaction in finance: keeping money somewhere.
When you leave a dollar in a checking account, you are not storing it. You are lending it to the bank, interest-free, and the bank relends it at whatever the market will bear. The difference between the two rates is the net interest margin, and it is not a rounding error. At 3.34% in the third quarter of 2025, rising to 3.39% in the fourth, against a checking rate of 0.07%, the bank keeps almost the entire return your money generates and pays you a sliver, or nothing.
Multiply that spread across the deposit base of the United States and you get the $189.6 billion of net interest income banks earned in a single quarter — on the order of three-quarters of a trillion dollars a year. The FDIC names net interest income as the primary driver of the industry’s record $295.6 billion profit for 2025. The most lucrative business in American finance is not lending, or trading, or advice. It is the spread on money that customers leave sitting still.
None of this is fraud. It is disclosed, lawful, and centuries old. But it is a cost, and it is paid by the depositor, in a currency — foregone yield — that never appears on a statement. That is the first and most important thing to see clearly, because everything that follows is a fight over it.
The toll on money in motion
What is true of money at rest is true of money in motion, and concealed the same way.
Moving money is a $2.5 trillion annual revenue pool, the single most valuable activity in financial services. A striking share of it is not fees at all but net interest earned on balances passing through the system — the same float, booked a different way. The visible fees are merely the part of the toll the customer is allowed to see.
Consider the card in your pocket. Every swipe carries an interchange fee, typically one and a half to three and a half percent, paid by the merchant and folded silently into the price of the goods. In 2024 American merchants paid a record $187.2 billion in processing fees, the largest slice of which flows to the banks that issue the cards. You do not see it because it is priced into everything; the cash customer pays it too.
Consider buying a stock. For years, retail brokers advertised “commission-free” trading and meant it in the narrowest sense: no fee appeared on the ticket. The cost was simply moved out of view. The broker sells your order to a market maker, which pays for the right to stand on the other side of your trade — Robinhood earned more than $600 million in 2025 from selling that order flow while charging nothing per trade, part of $4.8 billion across the industry. You paid in slightly worse prices, and in the value of letting someone see what you were about to do. “Free” was not free. It was unpriced.
Consider sending money across a border. The headline wire fee is the small part. The real toll hides in the exchange rate — banks quote retail customers a markup that institutions never pay — and in the days the money spends in transit, earning interest for whoever is holding it. The World Bank’s remittance data exposes the gap precisely: a global average of 6.36% across all channels, but 14.99% when a bank does the sending, against a development target of three percent and digital-only rails that already cost less than half the bank rate. Same transfer, same dollars; the price depends almost entirely on how well the toll is hidden.
The float is the whole game
Step back from the individual tolls and one mechanism sits beneath all of them. Whoever holds money — at rest in a deposit, or in transit during settlement — earns the yield on it. The customer almost never does.
This reframes something usually treated as a technical nuisance: settlement lag. A card payment takes days to clear; an ACH transfer takes days; a cross-border payment can take longer. We are told this is the unavoidable friction of legacy infrastructure. It is more honest to say it is convenient. Every day a payment is “clearing,” the money is sitting in an account earning interest for an intermediary, not for you. Slow settlement is not only a bug to be tolerated. It is, for the institution holding the float, a feature to be preserved.
Name the float and the whole structure becomes legible. The zero-rate deposit, the interchange fee, the sold order flow, the currency markup, the multi-day clearing window — these are not separate businesses. They are faces of one rent: the yield on your money, captured by whoever stands between you and the moment of payment. The cost of moving and holding money was never abolished. It was made invisible, and an invisible price cannot be shopped.
On-chain prices the invisible
Now introduce a system in which moving value is nearly free and nearly instant, and watch what happens to a hidden price when it is forced into the open.
On a low-cost network, converting one dollar-token into another, or sending it around the world, costs a few cents in network fees and a spread measured in basis points, and it settles in seconds rather than days. The interesting part is not the speed. It is that the cost becomes an explicit, quoted number — a line item a machine can read and compare — rather than a spread buried in an exchange rate or a clearing delay. The float has nowhere to hide when settlement is instantaneous, because there is no float in an instant.
This is precisely why the threat is structural rather than marginal. If depositors can hold a dollar that pays them the going rate and move it for cents, the bank’s core funding — cheap, sticky, zero-rate deposits — becomes expensive to retain. A measured Federal Reserve note from December 2025 puts it carefully: competition for liquid balances “could raise deposit rates or compress margins.” That cautious sentence describes the erosion of the single most profitable spread in banking. The technology does not need to replace the bank. It only needs to make the bank pay for deposits it used to get for nothing.
The rent does not vanish; it is re-hidden
Here is the twist that proves the fight is about the rent and not the technology: the first thing the new system did was rebuild the old toll.
A stablecoin issuer takes your dollar, hands you a token, and invests the dollar in Treasury bills — keeping the interest. Tether reported roughly $13 billion of profit for 2024, though only about half came from that reserve yield; the rest was the mark-to-market gain on gold and bitcoin it also holds, and the figure is company-attested rather than audited. By 2025 its Treasury holdings had grown to sovereign scale, ranking it among the largest buyers of U.S. government debt in the world. Circle is the cleaner illustration, because its business is almost nothing else: more than 99% of its 2024 revenue was interest on the reserves backing USDC. The holder of the token received none of it.
So the stablecoin did not abolish the float. It moved it from the bank to the issuer. The same dollar, the same foregone yield, a new intermediary keeping it.
Which is exactly why the law matters, and exactly what the law does. The GENIUS Act, signed in July 2025, makes the prohibition explicit: a payment-stablecoin issuer may not pay the holder “any form of interest or yield.” The statute does not protect consumers from a fraud or a wildcat bank. It protects a business model, by forbidding the one feature — paying the holder — that would expose the rent and compete it away. The catch is that the ban binds issuers, not the exchanges that distribute their tokens, leaving a “rewards” channel open through which platforms can still route some of the yield back to users. Closing that gap — a proposed rule from the OCC would extend the prohibition to affiliates — is the live regulatory battle of 2026. It is a fight, in plain terms, over whether the holder of a dollar is allowed to be paid for holding it.
The conflict is the confession
Return now to Jamie Dimon, because the feud is no longer a curiosity. It is the clearest available evidence for the entire argument.
Dimon’s objection, stated on the record, is that the pending market-structure bill “allows them to effectively pay interest on deposits, stablecoins or something like that, without protection that they should have,” and that “the banks will not accept it.” Notice what he is not saying. He is not warning about fraud, money laundering, or volatility — his usual complaints about crypto. He is objecting to someone paying depositors yield. The chief executive of the largest American bank has told you, in his own words, that the threat is competition for the spread.
The same logic runs one layer down, in a quieter dispute. In 2025 JPMorgan moved to charge the data aggregators — the plumbing that lets you link your bank account to an outside app — a fee triggered, specifically, when a customer moves money from a Chase account to a crypto platform or a service like Robinhood. One fintech founder put the mechanism plainly: “If it suddenly cost $10 to move $100 into a Coinbase or Robinhood account, fewer people might do it.” Another called it simply “a toll.” It is the same instinct as the yield ban, expressed as a fee instead of a statute: tax the exit, and make leaving the franchise expensive.
The decisive testimony comes from the government’s own economists. A White House Council of Economic Advisers analysis examined the yield ban — whose stated purpose is to stop depositors from leaving banks for higher-paying stablecoins — and found it would add a mere $2.1 billion, or 0.02%, to bank lending, at a net welfare cost to consumers of around $800 million. In other words: the rule protects the spread without meaningfully protecting the lending the spread is supposed to fund. It defends the rent for its own sake. That is the confession, scored by the referee.
The price that can be argued over
The cost of money was always there. The banks did not invent it and did not hide it out of malice; it is simply how the system was built, in an age when moving and holding value was hard. The depositor paid in foregone yield, the spender in spreads and float, the trader in sold order flow — each in a currency that never appeared on a statement.
What is new is only this: the cost has become visible. On a network that settles in seconds, a spread is a quoted number a machine can read and compare, and the float has nowhere to hide when there is no delay to hide in. That is why the incumbents are fighting, and why the law reached for the one feature — paying the holder — that would drag the rent into daylight. A levee can hold a river back for a long time, and none of this is fated to move quickly. But the water is now on the wrong side of the wall, and everyone can see it.
A hidden price is one you simply pay. A visible price is one you can, at last, argue over.