Why Is the ECB Trying to Scrap MiCA's 60% Stablecoin Reserve Rule?

On 22 September 2026, the European Central Bank asked Brussels for a change. It wants to scrap a rule inside the EU's crypto law, MiCA. That rule forces stablecoin issuers to hold 30% to 60% of their reserves as cash, sitting inside ordinary banks.

Why scrap it? The ECB says the rule ties a stablecoin's fate to one bank's health. If that bank gets into trouble, the stablecoin's reserve is at risk. If the stablecoin gets into trouble, the bank's own funding is at risk right back.

Their fix: stop requiring a fixed percentage in one bank. Instead, hold the reserve in assets you can turn into cash within a day or five.

This page explains what the current rule requires, why the ECB wants it changed, and what it means if you hold a stablecoin.

What Is MiCA's Stablecoin Reserve Rule?

MiCA is the EU's crypto law. It sets rules for how a stablecoin has to be backed.

A stablecoin promises that one token always equals one dollar, or one euro. That only works if the issuer holds a real dollar in reserve for every token out there.

MiCA doesn't let issuers keep that reserve however they like. It sets a minimum share that must sit as cash, in a bank account, at a regulated bank:

• Smaller stablecoins ("non-significant tokens"): at least 30% of the reserve as bank deposits.
• Larger, systemically important stablecoins ("significant tokens"): at least 60%.

The rest can sit in other safe, liquid assets, like short-term government debt.

The goal was safety. Keep the reserve inside the regulated banking system, where it's easy to check and insured.

Why Does the ECB Want to Scrap the 60% Rule?

The ECB's own words: the rule creates "reciprocal exposures." Bank trouble can hurt the token. Token trouble can hurt the bank.

Here's what that means in plain English.

Say the bank holding part of a stablecoin's reserve runs into trouble. Suddenly, nobody can be sure that reserve is still reachable. The token's peg comes under pressure — even if the stablecoin issuer did nothing wrong.

Now flip it. Say a lot of people rush to cash out their stablecoin at once. The issuer has to pull money out of the bank fast, to pay them. That can drain the bank's own funding.

Either way, the rule wires a stablecoin and a bank together. Trouble at one end spreads to the other. That's the opposite of what a reserve rule is supposed to do.

What Happened to USDC in March 2023

The ECB isn't arguing in theory. They named a real event: USDC's depeg during the collapse of Silicon Valley Bank.

Regulators shut Silicon Valley Bank on Friday, 10 March 2023. Circle, the company behind USDC, admitted something big: $3.3 billion of USDC's reserve was sitting inside that bank. That's about 8% of the total.

With the bank closed, nobody could be sure that money was still reachable. So the market panicked.

USDC's price broke its $1 peg within hours. By around 2am on 11 March, it was trading as low as $0.87 in public. Lower still, on some exchanges.

It only recovered once US regulators did something unusual. They guaranteed every single deposit at SVB, in full — not just the normal $250,000 limit. Circle's reserve was safe after all. USDC climbed back to $1 within days.

The ECB's own analysis says USDC's market value still fell 26% over the next month. Fear alone did that. The bank had failed. USDC hadn't.

That weekend wasn't abstract for everyone watching. I remember it directly: one of Takadao's earliest angel investors had sent his investment in USDT that same weekend. Because USDC had dropped to $0.87, I swapped that USDT for USDC at the discount, and made a straightforward profit a few days later once USDC recovered to $1. It was a good trade. But it left me with a bigger question than the profit did: why was a token marketed as "stable" moving like this at all?

What the ECB Is Proposing Instead

Drop the fixed percentage. Replace it with a liquidity test.

Under the new plan, part of the reserve must convert to cash within one working day. Another part, within five working days.

The exact numbers are still being worked out. The central banks point to draft EU banking rules as a starting point. But the idea is simple: stop parking money in one bank's walls. Spread it across assets you can actually reach fast, so no single bank's failure can break the peg.

This sits inside a bigger MiCA review, with its own public consultation that closed 30 September 2026. But the ECB's reserve-rule request went in on its own, on 22 September.

Which Stablecoins Does the 30–60% Rule Actually Apply To?

Not every stablecoin is bound by this rule. Only tokens authorized under MiCA are.

Circle's USDC was the first global stablecoin issuer authorized under MiCA, back in July 2024. Its euro-denominated token, EURC, is authorized under that same license. Both hold reserves the MiCA way: mostly short-dated US Treasuries, plus a cash portion at custodian banks, split to respect MiCA's concentration limits.

Tether, the issuer of USDT — the world's largest stablecoin by market value — has not sought MiCA authorization. As of 2026, USDT isn't MiCA-compliant, and several major exchanges have delisted it for EU retail users as a result. That means USDT sits outside this specific 30–60% bank-deposit rule entirely, for a different reason: it isn't inside the EU's regulatory perimeter at all, not because it solved the underlying problem.

What This Means If You Hold a Stablecoin

This story is about EU rules. But the real question isn't just European.

Ask yourself: where does the dollar behind your stablecoin actually sit? And inside how many banks?

A stablecoin is sold as a way to hold a digital dollar, no bank required. In practice, that dollar has to live somewhere. Under EU law, part of "somewhere" is a bank account. Outside the EU, most issuers still keep some reserves in banks too, rule or no rule.

That's the real lesson underneath this whole story: a stablecoin is a means to an end, not a place to store money. It's a mechanism for connecting the crypto world to the real world — moving value fast for settlement, trades, and remittances. It was never built to hold your long-term savings, because every layer of "safety" wrapped around it (the reserve, the audits, now this liquidity rule) is still safety borrowed from a bank. That's what a stablecoin is for.

Use stablecoins for settlement and trades. Hold your actual wealth in hard money instead — assets like Bitcoin or gold that don't depend on any single institution's balance sheet.

You don't need to avoid stablecoins over this. You need to use them for what they're actually built for, and know what backs the one you hold.

Every major issuer publishes a reserve report, usually every month. It's free to read, and it answers the exact question this whole story turns on.

FAQ

What is MiCA's 60% stablecoin reserve rule? It's a rule in the EU's MiCA crypto law. A stablecoin issuer must hold part of its reserve as cash, in a bank. At least 30% for smaller tokens. At least 60% for the largest, most important ones.

Why does the ECB want to scrap it? On 22 September 2026, the ECB asked Brussels to remove the fixed percentage. Their reasoning: it lets bank trouble spread to the stablecoin, and stablecoin trouble spread to the bank. Trouble goes both ways.

What is the ECB proposing instead? A liquidity test, not a fixed percentage. Hold reserves in assets you can turn into cash within one working day, or within five. Not locked inside one bank's deposit account.

Did USDC really lose its peg because of a bank failure? Yes. In March 2023, $3.3 billion of USDC's reserve — about 8% — sat inside Silicon Valley Bank. Regulators shut that bank down. USDC's price fell to $0.87 before recovering within days.

Does this affect stablecoins outside the EU? The 30–60% rule itself is EU law, so it doesn't apply elsewhere directly. But the risk behind it does. Any stablecoin backed by real dollars depends on whichever bank is holding them.

Is Tether (USDT) affected by this rule? No — not directly. Tether hasn't sought MiCA authorization, so USDT isn't bound by the 30–60% bank-deposit rule at all. That's a separate issue from the rule's actual safety question: it means USDT sits outside this specific EU requirement, not that its reserve is immune to bank risk.

Should I hold my long-term savings in a stablecoin? That's not really what a stablecoin is built for. It exists to move value quickly between crypto and traditional finance — settlement, trades, cross-border payments — not to store wealth, since its safety still depends on the same banks and rules described above. Many people use stablecoins to move money and hold their actual savings in harder assets, like Bitcoin or gold, instead.

This is part of Takadao's Future of Finance series — explaining how money, banking and crypto actually work, without ruling on specific instruments. The Future of Finance course goes deeper, lesson by lesson, alongside The LifeDAO's own Nobank.