Binance review: the deepest IOST book and where you can use it

Verdict: unbeatable liquidity, uneven legal footing

We score Binance 7.0 out of 10 for IOST buyers. As a market it is the best there is. IOST/USDT on Binance is the single largest IOST venue in the world, spreads are tight, the regular trading fee is 0.10%, and you can withdraw IOST on either the native IOST network or BNB Chain. It also offers self-service recovery when you forget a memo, which can save a deposit that other exchanges would treat as lost.

Two things pull the score down. First, the licence question: Binance has local entities in Japan and Thailand, but Binance.com is not licensed in Vietnam or registered in Taiwan, and Japan’s FSA has warned it about serving Japanese residents. Second, transfers: Binance paused IOST withdrawals on both networks during the go-iost v4.0.0 upgrade while deposits stayed open, so coins could go in but not out for a while. Neither is a reason to panic, but both are reasons to plan.

Binance at a glance

Changpeng Zhao founded Binance in July 2017. Richard Teng has been CEO since November 2023, and Abu Dhabi’s MGX invested US$2 billion in March 2025. Binance has no single official headquarters; it operates through regional companies. For IOST buyers in Asia, that structure decides which Binance you can use: Binance Japan, Binance TH in Thailand, Tokocrypto in Indonesia and Gopax in Korea are separate businesses from Binance.com.

The IOST/USDT market

IOST/USDT is the only active IOST pair on Binance. The old IOST/BTC, IOST/ETH and IOST/BUSD markets are halted, and IOST carries no Monitoring Tag. Binance and Upbit each handle roughly a fifth of global IOST volume, far ahead of any other venue, and spreads on Binance are usually well under half a percent. A market order for a few thousand dollars of IOST will normally fill close to the screen price.

Deep liquidity does not mean calm prices. IOST sits more than 99% below its January 2018 high, and it spiked sharply in September and October 2026 before retracing within days. Binance’s book is where most of those moves happen, so watch the live IOST price and use limit orders when volatility picks up.

Fees

Spot trading at the regular tier costs 0.10% for makers and 0.10% for takers, with a 25% discount when you pay fees in BNB. Margin is available on IOST/USDT, but borrowing adds interest and liquidation risk that we would not take on a coin this volatile.

A worked example: buying 1,000 USDT of IOST costs 1 USDT in fees, or 0.75 USDT if you pay in BNB. In Vietnam and Taiwan there is no direct bank deposit, so most people buy crypto through Binance P2P or a card on-ramp. P2P prices are set by individual sellers, which is a cost of its own. IOST itself is not offered on Binance P2P, so the crypto step comes first.

Withdrawals: IOST L1 vs BEP-20

Binance supports two IOST networks, and choosing the wrong one is the most common mistake. The IOST network (L1) sends native IOST to an account name, like an iWallet Pro account or an exchange such as Upbit or Coincheck. BNB Smart Chain (BEP-20) sends the IOST token on BNB Chain to a 0x address, such as MetaMask or Trust Wallet. Our IOST 3.0 guide explains why both exist.

The fee gap matters for small amounts. Withdrawing 1,000 IOST on BEP-20 costs 29 IOST, almost 3%, while the same withdrawal on L1 costs 1 IOST. If your destination accepts the L1 network, it is the cheaper route. Japanese and Korean exchanges we reviewed accept IOST only on L1.

During the go-iost v4.0.0 mainnet upgrade, Binance disabled IOST withdrawals on both networks, showing wallet maintenance on the L1 network and hot-wallet replenishment on BEP-20, while deposits stayed enabled. Upbit, by comparison, paused both directions and reopened within days. Before you deposit IOST to Binance with a plan to move it on, check the withdrawal status on the deposit page. Our guide to sending IOST covers test transfers and timing.

Memo mistakes and self-service recovery

IOST L1 deposits to Binance need both an address and a memo, because Binance uses shared deposit accounts and tells users apart by memo. If you forget the memo or type it wrong, Binance’s help pages describe a self-service recovery tool. A fee is charged only if the recovery succeeds; the exact fee wording differs between versions of Binance’s help pages, so read the current one before you apply. It is a real advantage over exchanges such as Coincheck, which will not reverse a completed transfer.

Earn and airdrops

Binance offers a Simple Earn Flexible product for IOST that you can redeem at any time. There is no locked IOST staking. The quoted rate changes and may include tiered or bonus rates, so read the terms in the app rather than trusting a headline number. Flexible Earn is custodial lending, not on-chain node voting; our IOST staking guide explains the difference.

Press reports named Binance among the exchanges taking part in the IOST 3.0 exchange airdrop, but we could not find Binance’s own distribution schedule. If airdrop payouts matter to you, Coincheck and Upbit publish theirs clearly. See our IOST airdrop guide for the full programme.

Where Binance is licensed in Asia

This is the part of the review that matters most for readers in Asia. "Binance" means different companies in different countries, and the legal position for you depends on which one you use.

Japan. Binance Japan acquired the former Sakura Exchange BitCoin and has been registered as 関東財務局長 第00031号 since 14 October 2022. The FSA register lists IOST among its assets, making it one of four FSA-registered IOST venues alongside Coincheck, OKJ and BitTrade. Binance.com is a different matter: the FSA has warned it twice for operating without registration. Read our IOST in Japan page for the domestic options.

Thailand. Gulf Binance, a joint venture with Gulf Energy, was licensed by Thailand’s SEC in May 2023 and operates as Binance TH. It lists IOST/USDT but no IOST/THB pair, and Binance.com redirects Thai users there. Korea. Binance.com does not serve Korean residents; Binance bought a majority of Gopax, which has no IOST pair. Indonesia. Binance owns Tokocrypto, which is OJK-licensed and lists IOST/USDT.

Vietnam. Binance.com is not licensed. Vietnam’s pilot for licensed crypto exchanges is open only to Vietnamese-majority firms, and we found no licence issued yet. Since 1 September 2026, Decree 284/2026 sets fines of VND 30–50 million for domestic investors trading on unlicensed platforms, even though no enforcement against retail Binance users had been reported. See our IOST in Vietnam page. Taiwan. Binance registered a local company in May 2023 and sought AML registration, but it is not on the FSC list of registered VASPs, and no registered Taiwanese exchange lists IOST. Our IOST in Taiwan page explains the usual routes and their risks.

Popular is not the same as licensed

In Taiwan and Vietnam, Binance is often the default way to reach IOST because no local licensed venue lists IOST. That convenience comes with legal uncertainty that the user, not the exchange, carries.

Safety record

On 7 May 2019 attackers stole 7,074 BTC, then about US$40 million, from a Binance hot wallet. The SAFU emergency fund covered the loss, and no comparable hot-wallet loss has been reported since. Binance publishes a monthly Merkle-tree proof of reserves with zk-SNARK verification, started in November 2022; we did not check whether IOST is included.

The bigger stain is legal. In November 2023 Binance agreed a settlement of about US$4.3 billion with the US Department of Justice, FinCEN and OFAC. CZ served a four-month sentence in 2024 and was reportedly pardoned in October 2025. None of that touched customer IOST, but it explains why regulators across Asia treat Binance cautiously. Our Is IOST safe? page covers the risks of the token itself.

How to buy IOST on Binance

1. Pick the right Binance

   Japanese residents use Binance Japan and Thai residents Binance TH. Elsewhere, check that your country is not restricted in Binance’s terms.

2. Verify and fund with crypto

   Complete ID and selfie KYC, then buy crypto by card, P2P or a transfer from another exchange.

3. Buy on IOST/USDT

   Open the spot IOST/USDT market and use a limit order if the price is moving fast.

4. Withdraw on the right network

   Choose IOST (L1) for account names, with memo for exchanges, or BEP-20 for 0x wallets. See how to buy IOST for other routes.

Pros and cons

Start with crypto

IOST on Binance trades only against USDT. If you need crypto first, CEX.IO, an exchange running since 2013, sells it by card in USD, EUR or GBP. Check whether it serves your country first, then move it to an exchange that lists IOST.

Start with crypto

Alternatives

If Binance is off the table for you, the right alternative depends on where you live. Korean residents get nearly the same depth on Upbit. Japanese residents should use an FSA-registered exchange. Thai residents can trade IOST/THB on Bitkub, and Indonesians can use Tokocrypto’s IOST/USDT pair. Globally, OKX has a much smaller but active IOST book. Our IOST exchanges comparison lists every venue.