European investors who still hold Tether's USDT on licensed exchanges face a new deadline, and potentially an unwelcome tax bill. The European Securities and Markets Authority (ESMA) issued an opinion on 8 October 2026 tightening its interpretation of the Markets in Crypto-Assets Regulation (MiCA), barring MiCA-licensed crypto service providers from permanently custodying stablecoins that do not meet the regulation's reserve and redemption-right requirements. USDT is the most prominent token affected. All USDT positions must be removed from exchanges operating in Europe by 8 January 2027.
MiCA's stricter rules for stablecoin issuers have been in force since 30 June 2024, and Tether has never brought USDT into compliance with them. Many exchanges already removed the token from regular trading in early 2025. Private possession of USDT in a personal wallet remains legal; the new squeeze applies only to custodial holdings on regulated platforms.
How exchanges are handling the wind-down
Coinbase, which ended regular USDT trading for European customers on 13 December 2024, will automatically convert any remaining USDT balances into USDC at the prevailing market rate on 30 October 2026. The measure covers 14 crypto assets in total, including DAI, PYUSD and USD1. Where a token is not eligible for conversion into USDC, Coinbase will convert it into another supported cryptocurrency or into fiat currency instead.
Bitpanda has not finalised whether it will automatically convert existing USDT holdings and says it is coordinating next steps with regulators; discontinuing remaining USDT services before the deadline remains a possibility. The exchange's own numbers illustrate how far USDT has already been squeezed out: the token accounted for 80 percent of Bitpanda's total stablecoin trading volume in 2024, a share that has since fallen to less than 1 percent.
OKX Europe is taking a softer approach, offering customers a voluntary one-way swap from USDT into USDC with a bonus of up to 8 percent, capped at €3,500, for those who act by 13 November. The bonus applies only to USDT deposited from an external wallet after registration and then converted, and is paid out over 52 weeks, requiring the balance to stay on the platform throughout. An OKX spokesperson said: "Although USDT is not authorized under MiCA, we observe that Europeans continue to hold large amounts of it and there are only limited options to exchange it on regulated platforms."
The German tax trap
For German investors, the mechanics of these conversions carry a sting. German tax law generally treats the exchange of one crypto asset for another as a disposal followed by a new acquisition, which restarts the one-year holding period and crystallises any gain. Florian Wimmer, co-founder and CEO of tax service provider Blockpit, notes that this applies even to involuntary, exchange-initiated conversions, "because the exchange acts on the basis of the terms and conditions that the investor agreed to."
The arithmetic can bite even without any intention to sell. An investor who buys 20,000 USDT for €18,000 and sees it converted into USDC worth €19,200 eight months later faces a taxable gain of €1,200, generated purely by exchange-rate movement, even though the holder never cashed out into euros. From 2027, German tax authorities will also begin receiving data on reportable crypto transactions dating back to 2026 under new reporting obligations.
Other jurisdictions treat the same event differently. In Austria, exchanges between two stablecoins classified as cryptocurrencies for tax purposes are tax-neutral, with gains taxed only at 27.5 percent upon an eventual sale for euros. In Switzerland, such capital gains are generally tax-free for private investors.
A shrinking foothold in a dominant market
The regulatory squeeze comes as USDT remains the dominant stablecoin globally. Tether's token has a market capitalisation above 180 billion US dollars, more than 2.5 times that of its nearest rival, USDC, and represents 60.8 percent of a stablecoin market worth nearly 300 billion dollars overall. In Asia, USDT accounts for roughly 91 percent of recorded stablecoin payment volume. Circle, which has held a European e-money licence since 2024, issues the two stablecoins designed to meet MiCA's requirements in the EU, USDC and EURC. For now, Europe's regulated exchanges are the arena where that global dominance is being unwound, one forced conversion at a time.
