Coincheck Review

Fees explained

Coincheck charges nothing to trade Bitcoin on its order book and as much as 7% to buy the same coin on its instant screen. As of September 2026 the exchange venue publishes 0.000% maker and 0.000% taker on the BTC/JPY pair, while the instant marketplace charges "an amount equivalent to the marketplace fee 0.1〜5.0%", rising to a stated 1.7% to 7.0% on certain listed assets (source: Coincheck fee pages). Nothing on this site has a wider cost gap between two buttons.

The ranges are the reason RampAtlas records no spread estimate for Coincheck. A published band running from 0.1% to 7% spans two orders of magnitude, and picking either end would be an estimate rather than a fact. Coincheck describes the mechanism clearly enough: a maker fee applies "when a limit order is placed on the order book and subsequently fills", and a taker fee "when an order fills without resting on the book" (source: Coincheck exchange fee page). Learn which screen you are on before you press the button.

A cost estimate for a $500 purchase on Coincheck and bitFlyer appears here once the published fee schedules are verified.

History and ownership

Coincheck, Inc. is a Japanese company founded in 2012 and headquartered in Japan. It is registered as a crypto asset exchange service provider with the Director-General of the Kanto Local Finance Bureau under registration number 00014, and is a member of the Japan Virtual and Crypto assets Exchange Association (source: Coincheck site footer, read September 2026).

RampAtlas could not reach the Financial Services Agency's own register of crypto asset exchange service providers to confirm that entry, so the registration number is recorded from Coincheck's own footer rather than from the regulator. That is weaker evidence than a register entry, and it is flagged here rather than presented as verified.

No further ownership detail is published in a form RampAtlas could confirm from a primary source. There is no audited group account, no shareholder list and no corporate structure statement in this review, because none could be sourced.

Products and markets

Coincheck operates two distinct venues under one account, and the Japanese names are worth knowing because the interface uses them. The 取引所, or exchange, is the order book, where your order meets another user's and the published fee schedule applies. The 販売所, or marketplace, is a dealing desk that quotes you a single price with the cost built into it (source: Coincheck exchange fee page).

The order-book fee table names a specific and fairly short list of pairs: Bitcoin, Ethereum, XRP, NEM, Bitcoin Cash, Lisk and Monacoin at 0.000%, with Ethereum Classic and IOST at 0.050% maker and 0.100% taker (source: Coincheck exchange fee page). Assets outside that table are marketplace-only, which means they are only available at the expensive end. RampAtlas does not publish a total asset count for Coincheck, because no verifiable market list could be read as of September 2026.

Japanese yen is the only fiat currency Coincheck deposits or withdraws (source: Coincheck fee page).

Security record and custody

Registration with the Kanto Local Finance Bureau is the substantive assurance available here. Japan has licensed crypto exchanges since 2017, and the regime imposes obligations on segregation of customer assets, cold storage and reporting that a registered firm must keep meeting. Membership of the Japan Virtual and Crypto assets Exchange Association, the self-regulatory body, sits alongside it.

Beyond that, this section is short because the sources are. Coincheck publishes no proof of reserves attestation that RampAtlas could locate. RampAtlas could not reach the Financial Services Agency register to check for administrative action, and did not verify an incident history against any primary or regulator source. This review therefore makes no claim in either direction about Coincheck's past security events, and readers should not read the absence of a claim as a clean record. It is an unverified record.

kyc is mandatory. The terms of use state that registration is decided under Coincheck's own criteria and procedures, which expressly include identity verification (source: Coincheck terms of use, article 3).

Deposits and withdrawals

Bank transfer is free and every other rail is a flat yen charge. The published figures as of September 2026 are below (source: Coincheck fee page).

There is no card deposit rail at all, which is unusual and, given what cards cost elsewhere, not a loss. The flat charges reward size: 770 yen on a 20,000 yen convenience-store deposit is close to 3.9%, while the same 770 yen on a 200,000 yen deposit is under 0.4%. Bank transfer avoids the charge entirely, though your own bank may levy its own.

The 407 yen withdrawal fee is small in absolute terms and worth batching around rather than taking money out weekly. As always, check the network fee and the chain before moving crypto out, because the cost of sending the same token varies by an order of magnitude between networks.

Support and usability

Coincheck is a Japanese-language platform first. The English fee page renders, but the authoritative order-book schedule is served on the Japanese route, and the FAQ is an application that returns no readable article text to anything but a browser. That makes independent verification harder than it should be, and it is why several gaps in this review stayed gaps.

Coincheck also publishes no supported-countries or restricted-countries list that RampAtlas could find. The terms establish that such a list exists, allowing the company to cancel a registration when a user "comes to reside in a country where the service is not provided", without saying which countries those are. Given that yen is the only currency and every deposit rail is domestic, the platform is in practice a Japanese one, but RampAtlas records availability only for Japan rather than inferring exclusions nobody published. Start at Japan and Buy Bitcoin in Japan for the regional picture.

Verdict

Coincheck suits a Japanese resident who funds by bank transfer and trades on the exchange order book, where the major yen pairs cost nothing at all. A zero fee on BTC/JPY is as cheap as spot trading gets anywhere, and the Kanto Local Finance Bureau registration puts a supervised counterparty behind it.

Everything about that recommendation depends on using the right screen. On the instant marketplace the same purchase carries a published cost of up to 7%, and the range means you cannot price it in advance. Look elsewhere if you want a fiat currency other than yen, a card deposit rail, a published reserves attestation, or an English-language platform. Compare the Japanese alternatives at Compare.