Will Stablecoins Threaten US Banks?
Today’s big story:
- Can the GENIUS Act save banks from stablecoins? A special guest author explores how stablecoins are a new form of money, with an old kind of limit.
In other news:
- Cantor Fitzgerald is planning a $4B SPAC with Adam Back to buy BTC: FT
- The DOJ and CFTC have dropped their probes into Polymarket: Bloomberg
- Solana is outpacing Ethereum in terms of RWA growth this year
- Texas, Utah, and Arizona are leading the U.S. in “blockchain innovation,” per a new report
- The Stellar development roadmap paves way for expansion and network scalability [SPONSORED]
- Investment policy statements: Ending misalignment and empowering long-term vision in decentralized organizations [SPONSORED]
Read more below! But first, please give our sponsors some love; they make this newsletter possible.

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Today’s Big Story
“No member bank shall, directly or indirectly by any device whatsoever, pay any interest on any deposit which is payable on demand.”
— Section 11(b) of the Banking Act of 1933
Can the Genius Act Save Banks from Stablecoins?

Money market funds — the world’s most boring financial product — terrified bankers as soon as they started to catch on in the 1970s.
When interest rates soared beyond what banks were legally allowed to pay on deposits, money market funds, which faced no such restrictions, suddenly looked like a threat to the entire banking system.
None other than Paul Volcker called money market funds a “regulatory arbitrage” that “weakens the financial system" because they “sucked deposits out of banks.”
The problem was that banks couldn’t compete with the higher interest rates on offer from money market funds because of Regulation Q — a 1933 rule explicitly designed to prevent banks from competing on interest.
In the 1920s, banks engaged in a ruinous “rate war,” offering ever-higher interest rates to attract deposits.
To pay these rates, banks had to make increasingly risky loans, creating a dangerous cycle that ultimately destabilized the banking system.
Regulation Q sought to avert such competition by banning banks from paying any interest at all on checking accounts and capping what they could pay on savings accounts and CDs.
This is why banks became famous for giving out gifts in return for new deposits: They couldn’t offer a higher interest rate than their competitors, so they offered toaster ovens and televisions instead.
In 1979, for example, depositing $1,475 with the Republic National Bank for 3.5 years earned you a 17-inch color television, and the same amount deposited for 5.5 years earned a 25-inch one.
Want an even better deal? Depositing just $950 for 5.5 years earned you a stereo with built-in disco lights.
But even disco lights weren’t enough to keep bank depositors from fleeing to unregulated money market funds.
Money market funds were able to pay those higher interest rates because they didn’t pay “interest”: They got past Regulation Q by paying dividends instead.
This was (and remains) a distinction without a difference, but regulators chose to allow it in the name of financial innovation.
Banks warned that this regulatory arbitrage would siphon away their deposits and impair their ability to make loans.
They were right, too: In the decade or so after money market funds were introduced, retail savers moved hundreds of billions of dollars out of their local banks and into the new “shadow banking system” of money markets.
As forewarned, this impaired the regulated banking system’s ability to serve its core purpose of creating the money that the US economy needed to grow.
To their credit, regulators recognized the problem and, as early as 1970, began offering banks various exemptions to Regulation Q.
By 1986, interest rate caps had been almost entirely phased out; but it wasn’t until after the Great Financial Crisis — caused in part by a panic over unregulated money market funds — that lawmakers decided to fully repeal Regulation Q.
The bell could not be unrung, however.
For better and worse, the decision to allow money market funds to pay interest while banks could not shifted the foundation of the US financial system from bank loans to capital markets.
Now, the government’s decision to allow stablecoins into the US banking system might do something similar.
The Genius Act, expected to be signed into law any moment now, legalizes stablecoins as a new form of money.
Specifically, stablecoins become non-bank money that looks eerily similar to the money market funds that were de facto legalized in the 1970s over the objection of the banking industry.
Lawmakers, however, appear to have long memories: This time around, the new form of money they’re allowing will not be interest bearing.
The Genius Act prohibits issuers from paying interest on stablecoins, in the hope of protecting the banking system from the same kind of ruinous “rate war” that Regulation Q was designed to prevent.
Interest-bearing stablecoins, it’s feared, could further drain the banking system of demand deposits, making it even harder for your friendly neighborhood community bank to give you a loan.
It might happen anyway.
If money market funds were able to innovate their way around Regulation Q, is there any doubt that crypto will be able to innovate its way around the Genius Act?
Stablecoin issuers will likely figure out an equivalent of rewarding their users with toasters instead of interest.
And even if they don’t, DeFi protocols will figure out ever more ways to pay interest.
You can already get over 5% yield on stablecoins by taking a sliver of smart contract risk with a protocol like Compound.
Tellingly, that might represent less risk than what bank depositors were initially willing to take with money market funds — and stablecoin deposits are nearly as accessible, too.
Money market funds demonstrated that US savers were eager to accept a little counterparty risk and a slight delay to withdrawals in return for higher yields.
So much so that today, money market funds are effectively risk free because they’ve become too big to fail.
The Genius Act may prove to be stablecoins’ first step in the same direction.
— Byron Gilliam
Note: This essay by Blockworks’ Byron Gilliam was originally published on The Breakdown newsletter on July 15. Subscribe to The Breakdown here.
🎬WATCH
Robinhood’s Big Crypto Bet with CEO Vlad Tenev
On the latest episode of The Defiant Podcast, The Defiant founder Cami Russo sat down with Vlad Tenev, co-founder and CEO of Robinhood, in Cannes to explore the firm’s recently announced major crypto moves, including bringing tokenized U.S. stocks to the EU and launching its own Ethereum L2 with Arbitrum tech.
From tokenized private shares to the long-term vision of blockchain adoption, Vlad shares insights on regulation, innovation, and the battle between Robinhood and Coinbase.
Money is Infrastructure: Unlocking the Future of Stablecoins with M0 Founder Luca Prosperi
Watch the full interview on YouTube here. [SPONSORED]
Top News in Web3
- Cantor Fitzgerald Nears $4 Billion SPAC with Bitcoin Pioneer Financial services giant Cantor Fitzgerald is reportedly in advanced talks to complete a roughly $4 billion special-purpose acquisition company deal with Adam Back, one of Bitcoin’s earliest pioneers, to create a Bitcoin treasury company, according to the Financial Times.
- DOJ, CFTC End Polymarket Probes as Trump Warms to Crypto Betting Federal investigations by The U.S. Department of Justice and the Commodity Futures Trading Commission into crypto prediction markets firm Polymarket have both been closed, Bloomberg reported. The news comes as Congress attempts to pass three major crypto bills during “Crypto Week.”
- Solana RWA Growth Outpaces Ethereum in 2025 Tokenized real-world asset growth on Solana is up over 200% year-to-date at $553.8 million, outpacing growth on Ethereum. Most of the RWA value on both Ethereum and Solana — over 90% — comes from stablecoins, per RWAxyz data.
- Texas, Utah, and Arizona Lead in Blockchain Policy, Report Shows Some U.S. states are moving faster than others in terms of “blockchain innovation,” per a new scorecard tool from Chainlink and the Blockchain Association. Texas, Arizona, and Utah were all ranked in the “Trailblazer” category for their efforts in crypto policy and blockchain development.
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