An initial exchange offering (IEO) is a token sale run by a centralized crypto exchange on behalf of a project: the exchange vets the project, sells the tokens to its own verified users, and lists the token for trading when the sale ends. Projects get distribution and an immediate market; buyers get some screening; the exchange takes fees and takes on responsibility for what it sells.
Where IEOs came from
After the 2017 ICO boom, when projects sold tokens directly from their websites with little screening and many failed or turned out to be frauds, exchanges offered a more curated route. The IEO wave began in early 2019 when Binance Launchpad ran the BitTorrent token sale, and other exchanges launched their own platforms soon after. Since then, models have diversified: some exchanges use lotteries or subscriptions based on users' holdings, and "launchpool" variants distribute new tokens to users who stake existing ones instead of selling them.
IEO compared with other launch routes
| Route | Who runs the sale | Who verifies buyers | Listing |
|---|---|---|---|
| ICO | The project | The project, if anyone | Not guaranteed |
| IEO | A centralized exchange | The exchange's KYC | On the hosting exchange |
| IDO | Smart contracts on a launchpad | Launchpad KYC, if any | On a DEX |
| STO | Issuer with regulated intermediaries | Regulated intermediaries | Regulated venues only |
Contract-based sales are covered in the launchpad guide, and regulated securities sales in the security token offering guide.
How an IEO runs
- Application. The project submits its business plan, token design, team details, legal opinions and audits.
- Due diligence. The exchange reviews the team, the legal status of the token in its markets, smart contracts, tokenomics and vesting, and often requests changes.
- Commercial terms. Fees, token allocations to the exchange or its users, marketing commitments, and market-making arrangements for after listing.
- Disclosure. The project, or in some EU cases the platform, prepares a white paper and risk disclosures.
- Subscription period. Eligible, verified users commit funds, often subject to holding requirements, caps or a lottery.
- Allocation and distribution. Tokens are credited to users' exchange accounts, sometimes with vesting.
- Listing. Trading opens on the exchange, with market makers providing initial liquidity.
What projects should expect
An IEO is not cheap or easy access to capital. Expect detailed scrutiny, a share of tokens or fees going to the exchange, requirements to keep liquidity and market makers in place, and restrictions on where the token may be marketed. Ask how the exchange's users are distributed geographically, what share of sale participants typically keep their tokens after listing, and what the exchange will do if the token falls sharply. Listing-only arrangements are discussed in the exchange listing guide.
Building an IEO module into an exchange
For exchange operators, an IEO platform is a back-office and ledger feature more than a blockchain feature, since sales happen inside the exchange's internal accounts:
- Project workspace for document collection and due-diligence tracking.
- Eligibility engine combining KYC level, residency restrictions and holding or staking requirements.
- Subscription and allocation logic for fixed-price, pro-rata or lottery formats, with auditable randomness and reconciliation.
- Ledger integration to lock committed funds, credit allocations and apply vesting.
- Disclosure management for white papers, risk warnings and post-sale reporting.
Many white-label exchange platforms offer a launchpad module; check whether it supports the eligibility rules your licenses require before relying on it.
Regulatory points that matter most
- Securities status. If a token is a security in a market, selling it there requires a securities exemption or registration, and the exchange may need broker-dealer or equivalent permissions.
- MiCA in the EU. Public offers of most crypto-assets require a white paper notified to a national authority, and trading platforms have duties when admitting assets to trading. Marketing must be consistent with the white paper.
- Conflicts of interest. An exchange holding tokens from the project it promotes must manage and disclose that conflict.
- Market integrity. Post-listing price support by insiders or market makers can cross into manipulation.
Frequently asked questions
Is an IEO safer for buyers than an ICO?
Usually somewhat, because the exchange screens projects and verifies buyers. It is not a guarantee: many IEO tokens have traded far below their sale price.
Can any exchange host an IEO?
Technically yes, but legally only within what its licenses permit, and only for assets it can lawfully offer in its users' jurisdictions.
What is a launchpool?
A variant in which users stake an existing token for a period and receive the new token as a reward, rather than buying it directly.