GMO Coin: yen trading, custody, Pro services and automation

GMO Coin combines a Japanese yen crypto dealer with spot and leveraged order books. In the dealer service, the customer buys from or sells to GMO Coin at its quoted prices and can specify either yen amount or coin quantity. That quote-based route is a different execution choice from submitting an order to the book.[6]

Book order conditions change what survives a partial fill. FAK cancels the unfilled balance; FAS leaves it working; FOK requires immediate execution of the entire quantity. Post-only, labelled SOK, rejects the whole order if it would take liquidity. Market and stop orders use FAK, while limit orders offer the four choices. The current help page says these conditions cannot be selected in the smartphone app; use the browser member page.[8]

Basic lending can be terminated through Lending History until 06:00 five days before maturity. Return is five business days after the request, less the exit charge, and no lending reward is paid.[14]

The Basic exit charge is 10% of the reward originally scheduled for maturity, rather than 10% of the lent principal. Optional renewal rolls principal only, returning each period’s reward. Cancel renewal by 06:00 five days before maturity to avoid another term.[13]

Premium lending generally cannot be ended early and has no automatic renewal. Its one-week to two-month offers have individual settlement dates and premium rates. A quoted annual percentage therefore describes a structured, conditional payout over the selected term.[16]

Leveraged-book liquidation adds 0.5% of entry price multiplied by quantity; ordinary Crypto FX liquidation has no liquidation fee. Forced closure for an unmet additional-margin call costs 0.5%: entry value for the book, execution value for Crypto FX.[10]

At the standard BTC spot rates, a ¥1,000,000 fill earns a ¥100 maker rebate or incurs a ¥500 taker fee. This arithmetic excludes any price movement or spread and does not describe dealer pricing.[10]

GMO Coin Pro accepts applications from existing customers. It offers individually agreed spot pricing based on the previous month’s turnover, priority support, and applications for higher daily spot-trading and yen-withdrawal limits. Multiple accounts and relaxed API call limits are still labelled planned on the current page. Pro is not limited to customers classified as professional investors under Japanese law; its public page supplies no universal qualifying balance or fixed tariff.[11]

The standing purchase lottery awards ¥1,000 cash to ten customers daily. Entry requires ¥500 of dealer purchases or one recurring purchase during the 06:00–05:59 trading day. Winners must press the claim button within seven days or lose the award. This is a contingent yen prize credited to the account, rather than guaranteed trading credit. The rules do not promise a separate immediate withdrawal facility.[38]

JPY funding uses supported Japanese banks. Instant routes and ordinary bank transfers differ; Pay-easy deposits restrict crypto withdrawals equivalent to the deposit for seven days. GMO Aozora and Rakuten routes are treated as bank transfers. Complete the bank’s confirmation flow and use the account-specific destination for ordinary transfers.[19]

Normal yen withdrawals are free and can complete within minutes, including nights and weekends, subject to bank and system processing. BTC transfers are quoted from thirty minutes; offline preparation and blockchain confirmation can extend that period. Acceptance of a request and final settlement are separate stages.[19]

Normal yen withdrawals use the customer’s own bank name. Bank participation in Japan’s More Time System, bank maintenance and system processing can delay completion. Pending margin positions also change the withdrawable balance; the cash shown in an account is not necessarily all available to withdraw. Where both account types exist, fiat-FX funds must first be transferred to the crypto account before bank withdrawal.[20]

Staking opt-out is a monthly instruction: the setting at the last business-day close governs the following month. Rewards depend on what GMO actually receives and can be delayed by network distribution. Selling or sending a coin changes the balance calculation; opting out is not the same as moving an already lent coin back into ordinary custody.[17]

Customer yen is held in trust with JSF Trust and Banking. GMO describes separate customer and company crypto storage, offline custody and multiple-department approval for movement from cold to hot wallets. Multisignature controls apply to assets meeting its security criteria, rather than necessarily every supported chain.[22]

The formal disclosure identifies a specific custody delegation: Crypto Garage holds customer ETH, segregated from its own holdings in cold wallets, under GMO’s supervision. Other customer crypto is described as managed by GMO. Statutory priority repayment and segregation do not guarantee complete recovery if assets have already been lost when the operator fails.[5]

New withdrawal destinations have a 24-hour hold beginning when GMO sends the address-review completion email. Address review itself comes first. The September delisting notice explicitly restates this rule as applying to new registrations from 29 August 2026.[39]

Crypto collateral requires activation and an internal transfer of BTC, ETH, XRP or SOL. GMO values it at 50% of its 06:30 dealer bid, rounded down to yen, and fixes that value until the next daily update. Transferred collateral cannot be withdrawn externally. Returning it to spot must leave 120% of required margin, including relevant open orders; a negative yen balance or outstanding margin call blocks that return. Negative yen also blocks withdrawal of other, unpledged crypto.[12]

The leveraged book also tests additional margin at 06:30. Its deadline is 03:00 the following calendar morning, including weekends. Deposit yen, reduce positions, sell spot coins or transfer eligible collateral as prescribed. Market recovery alone does not cure the call; uncorrected calls lead to compulsory closure.[7]

The current general agreement requires individuals to be resident in Japan and at least twenty, with their own email and telephone contact and a same-name Japanese bank account. It excludes specified foreign politically exposed persons and other disqualified applicants. Corporate eligibility requires a Japanese registered head office or branch and an accepted company form; the representative and designated trader must also meet domestic-residence requirements. Approval is subject to the operator’s review.[4]

The agreement permits restriction or termination where there has been no trading-screen login or service use for at least one year. This is an account-status power, not a published monthly inactivity charge. Customers can also request termination through GMO’s procedure, with remaining assets returned by an appropriate method.[4]

The service disclosure directs account-closure requests to customer support and states that closure carries no fee.[5]

The complaint process is handled by the business operations department, which can coordinate with other departments. Crypto-exchange complaints have a JVCEA route and the three Tokyo bar associations’ dispute centres. OTC derivatives use FINMAC. The inspected policy does not promise a fixed resolution time. Preserve the relevant service, order identifiers, transfer references and correspondence when escalating.[28]

Published regular maintenance is Saturday 09:00–11:00 Japan time, subject to extension or additional emergency windows. During maintenance, the member page, app and WebTrader cannot be used to log in or trade. GMO directs customers to website news for emergency-maintenance notices.[26]

The order books then normally have a ten-minute pre-open in which cancellations are allowed but new orders and amendments are unavailable. A maintenance end time therefore does not necessarily mean immediate full dealing functionality.[27]

The formal disclosure expressly says telephone enquiries are not accepted and directs customers to the form or chat. No emergency telephone-dealing alternative is established by that contact provision.[5]

The operator is GMOコイン株式会社, styled GMO Coin, Inc. in the FSA register. Its company page dates establishment to October 2016, identifies GMO Financial Holdings as shareholder and gives a Shibuya, Tokyo address. It reports ¥3.758 billion of capital including reserves; that combined accounting figure is not a customer compensation fund.[1]

GMO Financial Holdings’ September 2026 operating table reports 825,207 crypto accounts and ¥483.073 billion of monthly crypto trading consideration. The figures are provisional. The account total is not a monthly active-user count, while the turnover measure spans the crypto business and should not be described as spot-only exchange volume. Its order-book calculation is one-sided under the published reporting convention.[2]

A current asset-level exit timetable affects SAND, CHZ and FIL. Their lending ended in September and recurring purchases ended by 10 October. Dealer sales and deposits are scheduled to end after maintenance on 24 October; withdrawal acceptance ends after maintenance on 7 November. Residual holdings, including some uncredited receipts, are scheduled for operator conversion to yen in mid-November. The exchange remains operating; this is a three-asset withdrawal from service.[39]

Operator

GMOコイン株式会社 (GMO Coin, Inc.)

Exchange model

Centralised

Service scope

Japanese dealer spot, spot and leveraged order books, Crypto FX, recurring purchases, staking, term lending and crypto custody. Fiat FX is a separate service.

Client types

Retail clients; Institutional clients

Pricing publication

Public pricing

Pricing scope

Spot maker rebates and taker fees vary by asset; dealer spread, leverage carrying costs and individually agreed Pro terms are separate.

Funding scope

JPY bank routes and supported crypto transfers; Pay-easy equivalents and newly approved crypto destinations have distinct holds.

Custody and asset handling

Customer yen trust and segregated crypto custody; ETH delegated to Crypto Garage. Lent crypto is outside ordinary segregation.

Client eligibility

Japan-resident individuals aged twenty or older and approved domestic-scope corporate applicants.

Support

Japanese enquiry form and staffed chat; product-specific internal and external dispute routes.

Authorisation and registration scope

Crypto-exchange registration Kanto00006 independently matched; Type I Kanto3188 disclosed by operator.

Exchange metadata checked 20 Oct 2026Source 1Source 4Source 7Source 9Source 5Source 15Source 19Source 28Source 3Source 17Source 10

API keys can be restricted by function and IP address. Current private-call tiers allow 20, 30 or 50 requests per second for each of GET and POST, depending on the prior week’s eligible spot-plus-leverage turnover; updates occur on Sunday. The documented account-transfer endpoint is an internal movement function. The reviewed endpoint list does not establish an external crypto-withdrawal API. Revoke unneeded keys and assess the permissions granted before connecting another service.[30]

GPT-Trade is an external service provided by Trade Advisory Technologies, connecting through API credentials to GMO’s leveraged order book and fiat FX. Its repeat and signal strategies can place orders, making that connection different from an analytical chart or an enquiry chatbot. GMO’s March 2026 explanation also refers to separate investment-advisory charges.[32]

The current introductory landing page advertises no automated-trading transaction fee and discusses AI-assisted analysis for order-spacing features. This does not establish that every subscription tier or advisory arrangement is free.[33]

The provider’s plan-change notice says paid plans began on 13 January 2026. It also expressly warns that stopping a strategy does not automatically close its positions. Check the applicable plan before activation, and separately inspect working orders and positions when stopping or disconnecting; the customer remains responsible for managing that exposure.[34]

GMO’s separate AI enquiry chat is described as a question-and-answer service using a conversational-AI platform. Its terms do not establish order or withdrawal authority and disclaim answer accuracy. They also restrict submission of confidential personal information and explain possible processing by AI providers. It should therefore not be treated as account authorisation or a substitute for a confirmed execution record.[35]