The Fed Just Opened the Stablecoin Rulebook, and the 60-Day Comment Clock Is Running

I've been reading regulator PDFs for a living for a few years now, and I can count on one hand the times the paperwork moved this fast after a bill got signed.

This week in 60 seconds: the Federal Reserve opened two proposals for public comment under the GENIUS Act. Proposal one sets reserve rules for the stablecoin issuers the Fed directly supervises. Proposal two builds an application pathway for banks that want to issue their own stablecoins.

That's the headline. Boring, right?

Here's the thing. The headline is boring and the substance is enormous. So let's get into it.

The

Start with proposal one. It says issuers under the Fed's watch have to back their tokens fully with safe assets. Not mostly. Fully. A dollar of reserves behind every dollar of token in circulation, and the reserves have to be the dull stuff.

Cash. Treasury bills maturing in 93 days or less. Repo agreements collateralized by Treasuries. Government money market funds. And balances held at a Federal Reserve bank.

No commercial paper. No crypto collateral. No creative treasury management.

That list isn't random. Those are the same instruments money market funds use to qualify for the safest regulatory buckets. The Fed is essentially saying: your stablecoin reserve is a money market fund, so run it like one.

Proposal two is the one people should be paying more attention to. It lays out a path for banks to apply for permission to issue stablecoins. Not crypto companies pretending to be banks. Actual banks, with actual charters, subject to actual examination.

That's a big deal, and here's why.

Under the GENIUS Act, the supervision split runs along a size line. Issuers with more than $10 billion in outstanding tokens sit under federal regulators. Below that, they can opt into a state framework. The Fed's proposal handles the slice it owns: bank subsidiaries and the holding companies under its roof.

So who's actually in scope? Think custody banks. Think the stablecoin arm of a big bank holding company. Think every institution that's been quietly building a token team for two years and waiting for someone to give it a permission slip.

Which happened. The permission slip exists now.

One more detail the skimmers are missing. The GENIUS Act bars issuers from paying interest or yield to token holders. That's not a Fed rule, that's the statute itself. Which means the entire "stablecoin as a high-yield savings account" pitch is dead on arrival in the US. Whatever profit comes out of these things comes from reserve income, not from handing you a cut.

And reserve income is real. Tether reported roughly $13 billion in profit for 2024, almost all of it from T-bill yields on reserves. Circle pulled in well over $1.5 billion in reserve revenue last year. That's the business model. Full stop.

Now, the Fed's proposals are out for comment, and Fed comment windows typically run about 60 days. That's your window. Not the final rule. The window before the final rule.

Broader Implications

Pull the camera back and look at the shape of what's coming.

Stablecoins are a roughly $280 billion market right now. Tether's USDT is close to $170 billion of that. USDC sits around $60 billion. The rest is spread across a long tail of smaller issuers, some legit, some less so.

Rules like these don't hit the whole market evenly. They hit the bottom of the market hardest.

A small issuer with $400 million in circulation now has to hold the same quality of reserves as a megabank, produce the same disclosures, and pass the same exams, without the balance sheet to absorb the compliance cost. Some of them will fold into bigger players. Some will migrate offshore. Some will just stop.

Is that bad? Honestly, no. And this is my first strong take of the piece: consolidation here's a feature, not a bug. The stablecoin market has spent years pretending that a token backed by a mix of Treasuries, commercial paper, and vibes deserved the same trust as one backed by T-bills and Fed deposits. It didn't. Now it won't get to.

The second-order effect is more interesting. Once bank-issued stablecoins are a real product, the competition stops being between crypto natives. It starts being between your bank and Circle. And your bank already has your checking account, your mortgage, and a compliance department that knows your name.

That's a genuinely uncomfortable position for the pure-play issuers who built this market from nothing.

So who wins? Whoever already holds scale in short-dated Treasuries and has a banking relationship that predates 2024. Circle and Tether both qualify. The handful of mid-size issuers with real treasury operations qualify. Everyone else is playing for second place or a buyout.

Who loses? Yield-chasing users who thought they'd get paid to hold a dollar token in the US. Offshore issuers eyeing the American market without wanting American supervision. And anyone who assumed the rules would stay fuzzy forever.

What happens when the reserve yield is the only profit left in the business, and the Fed gets to define what counts as a reserve?

That's not a rhetorical question. That's the whole ballgame.

What I'd Actually Do With This

If you run a stablecoin issuer of any size, go read the proposals and file a comment. This is the cheapest lobbying you'll ever do. Comments submitted during the window get read. Rules get sanded down at this stage, not after. Ask anyone who's been through a rulemaking before.

If you're a trader, the play isn't exciting but it's clear. Regulatory clarity is structurally bullish for the biggest names and structurally bearish for the long tail. That gap widens over the next 18 months as these rules land.

If you're just holding stablecoins as a parking spot, nothing changes for you this month. Your USDC still works. Your USDT still works. But the product you're holding is turning into something closer to a bank deposit, with bank deposit rules and bank deposit tradeoffs.

The one thing to remember from this week: the US government is no longer debating whether stablecoins should be regulated. It's deciding how tightly, and the comment period is where that fight actually gets settled.

Go read the PDFs. They're long. They're worth it.

That's the week. See you Monday.