Coinmetro Moves from USDT to USDG: Effects on Liquidity, Open Orders and Fees

Coinmetro’s replacement of USDT-denominated markets with USDG changes the quote currency used to price and trade many crypto assets on the exchange. The move forms part of Coinmetro’s work towards compliance with the EU Markets in Crypto-Assets Regulation, commonly known as MiCA. It does not mean that customers lose their USDT balances, but it does affect active orders, margin positions, order-book depth and the costs that may arise when traders rebuild positions. The practical impact depends on the type of order a customer had, the liquidity available in the new USDG market and the method used to convert between the two stablecoins.

Why Coinmetro Replaced USDT Trading Pairs with USDG

Coinmetro announced that its USDT trading pairs would be moved to equivalent USDG pairs in three batches dated 25, 26 and 29 June. The first group covered a broad range of altcoins, the second contained a smaller selection of markets, and the final batch included major assets such as Bitcoin, Ether, Solana, XRP, Cardano and Litecoin. This phased approach reduced the number of markets changing at one moment, but each affected pair still had a defined cut-off at which the USDT order book stopped operating.

The stated reason was regulatory alignment. MiCA introduced specific rules for asset-referenced tokens, e-money tokens and crypto-asset service providers operating in the European Union. European supervisors had already instructed national authorities to address services involving non-compliant stablecoins, so exchanges seeking authorisation had a clear incentive to review the quote assets they offered. Coinmetro described the USDG migration as part of its route towards Crypto-Asset Service Provider authorisation rather than as a claim that USDT had ceased to function globally.

USDG is designed to track the US dollar at a one-to-one rate. For the European Economic Area, its 2026 MiCA white paper identifies Paxos EU as the issuer and the Finnish Financial Supervisory Authority as the supervisor. It also states that reserve assets are held in segregated, bankruptcy-remote accounts and that holders have a right to redeem at one US dollar per token, subject to the applicable terms. Paxos publishes monthly attestations, with reports issued by KPMG from February 2026. These safeguards improve transparency, but USDG remains a crypto asset with issuer, operational, market and regulatory risks.

What USDG Changes for Everyday Traders

The most visible change is the symbol shown after the slash in a market name. BTC/USDT becomes BTC/USDG, ETH/USDT becomes ETH/USDG, and the same pattern applies to the other migrated assets. The crypto asset being bought or sold does not change. What changes is the unit used to quote its price and settle the trade. A trader selling Bitcoin in a BTC/USDG market receives USDG, while a buyer must have USDG available or obtain it before placing the order.

Since both stablecoins aim to follow the US dollar, prices expressed in USDT and USDG may look almost identical in calm conditions. They are not guaranteed to remain exactly equal, however. Each token has its own issuer, reserves, redemption arrangements and market demand. Even a small difference between USDG and USDT can affect a limit price, the value of a large conversion or the result of a tightly managed strategy. Existing price alerts, spreadsheets, trading journals and automated instructions may therefore need a new market symbol and a fresh reference price.

The migration also changes the stablecoin exposure held after a trade. A customer who previously sold an asset into USDT now receives USDG in the replacement market. This may be suitable for someone who wants to continue trading on Coinmetro, but a customer who needs USDT for an external wallet or another exchange must convert or withdraw accordingly. The switch should therefore be treated as a change in settlement asset, not merely a cosmetic renaming of the same market.

How the Migration Affects Liquidity and Trade Execution

Liquidity describes how easily an asset can be bought or sold without causing a large price movement. On an order-book exchange, it depends on the number and size of buy and sell orders near the current market price. When Coinmetro removes an established USDT pair and opens a USDG replacement, the old orders do not automatically become liquidity in the new book. Market makers, active traders and other participants must submit new bids and offers denominated in USDG.

This reset can make the first stage of a new market less predictable. If fewer orders are available close to the best price, the gap between the highest bid and lowest ask may be wider. A market order can then move through several price levels, producing more slippage than the same trade would have experienced in a deeper book. The effect is usually more important for larger orders and less frequently traded altcoins than for small orders in major assets, although actual conditions can change from minute to minute.

Concentrating trading into one approved quote asset may support liquidity over time because activity is no longer split between old and replacement pairs on the same exchange. That benefit is not automatic. It depends on customers moving balances into USDG, market makers maintaining competitive quotes and Coinmetro connecting the market to sufficient external liquidity. Traders should therefore judge each USDG pair by its live order book, spread and recent volume rather than assuming that historical USDT conditions have carried across unchanged.

Why New USDG Order Books May Behave Differently

A quoted price is only as useful as the amount available at that price. A screen may show BTC/USDG close to the wider dollar market, yet a large buy order could still fill at progressively higher prices if the sell side is thin. The reverse can happen when selling. Before submitting a sizeable order, it is sensible to inspect several levels of the order book and compare the estimated average execution price with the headline price shown at the top.

Limit orders give customers more control because they specify the worst price at which they are prepared to trade. They can also add liquidity when they rest in the book, although there is no guarantee that they will fill. Market orders prioritise immediate execution and can be appropriate when speed matters, but their final price depends on available depth. During a market transition, splitting a large transaction into smaller orders can reduce price impact, though it also creates the risk that the market moves before the full amount is completed.

Stablecoin conversion is another source of liquidity risk. Coinmetro said it would keep a permanent USDG/USDT bridge pair with no trading fee, allowing customers to move between the two tokens. A fee waiver does not guarantee unlimited depth or a perfect one-to-one execution price. If one side of the pair is temporarily in stronger demand, the tradable price may differ slightly from one dollar, and a large order may experience slippage. Customers should check the quoted rate and expected amount received before confirming a conversion.

What Happens to Open Orders, Margin Positions and Balances

Coinmetro warned that open orders on each USDT pair, including margin positions, would be force-closed when that pair reached its migration time. For a resting spot limit order that had not executed, the practical result is normally removal from the old order book and release of the reserved balance, as reflected in the customer’s account history. The order is not copied into the USDG market. Anyone who still wants the trade must review the new price and submit a fresh order using the replacement pair.

A margin position requires greater attention because closing it can crystallise a profit or loss. The final result may also include funding, borrowing or other charges already associated with the position under the applicable terms. A trader who intends to keep the same market exposure may need to open a new USDG-denominated position after the old one closes, but the entry price can differ during the interval. Closing and reopening also creates additional execution risk, especially if the market moves sharply or the new order book is still shallow.

The migration did not automatically remove or convert customers’ existing USDT balances. Coinmetro stated that USDT deposits and withdrawals would continue and that users could choose when to convert through the USDG/USDT pair. This distinction matters: the trading pairs changed, while custody of USDT remained available. Customers should still verify the current deposit network, minimum amounts, withdrawal charges and service status before transferring funds, because those operational details can change independently of the trading-pair migration.

Fees, Conversion Costs and Practical Steps After the Switch

The replacement of USDT pairs does not by itself create one universal new trading fee. Coinmetro identified the USDG/USDT bridge as fee-free, but trades such as BTC/USDG or ETH/USDG remain subject to the fee schedule attached to the customer’s account and jurisdiction. Coinmetro’s 2026 UK schedule lists a standard maker fee of 0.05% and taker fee of 0.10% for new UK users, while eligible existing accounts may retain other arrangements. Customers outside the UK may be covered by the exchange’s level-based schedule and should rely on the fee displayed before placing an order.

There can also be costs that are not labelled as a commission. The USDG/USDT conversion rate may contain a spread, a market order may suffer slippage, and closing then rebuilding a position can require two separate executions. Withdrawals can carry network or service charges, while a taxable gain or loss may arise in some countries when a crypto asset or stablecoin is disposed of. Tax treatment depends on local law, so account statements and trade records should be retained rather than assuming that a stablecoin-to-stablecoin conversion has no reporting consequence.

A careful post-migration review should cover open-order history, realised margin results, available USDG, remaining USDT and the live depth of each market used. Saved market links, API symbols, alerts and recurring trading instructions should be checked before they are relied upon again. Most customers do not need to convert all USDT immediately, but they do need USDG to trade the replacement pairs. Confirming the market symbol, order type, fee, conversion rate and estimated execution value before each transaction is the simplest way to avoid preventable errors after the switch.