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Flash loans

Liquidity for an instant, repaid in the same transaction.

For professional users: a loan that begins and ends within a single on-chain transaction. If the amount is not returned by the end of the transaction, the entire transaction is undone.

Open account How it works
  • For professionals
  • All or nothing, in one transaction
  • For those who code their own transactions
Professional analyzing charts on multiple monitors at a trading desk

01 — Benefits

Why flash loans exist

A tool that is only possible because on-chain transactions are atomic.

  • No upfront collateral

    Repayment is a condition for the transaction to exist: without it, the network reverts everything and the loan never happens.

  • Atomicity

    Every step happens together, or none does. There is no middle ground.

  • Capital efficiency

    Operations such as collateral swaps or position refinancing, without tying up your own capital during the operation.

  • Built for builders

    Designed for those who write their own transactions and strategies.

02 — How it works

How it works

Beginning, middle and end within the same transaction.

  1. Borrow

    The transaction draws the amount from the liquidity pool.

  2. Execute

    Within the same transaction, the amount flows through the operations you programmed.

  3. Repay

    At the end of the same transaction, the amount returns to the pool with the loan fee.

  4. Confirm or revert

    Without repayment, the network rejects the entire transaction, as if it had never existed.

03 — Risk warning

Read before using

Flash loans are for those who master on-chain transactions and programmable contracts. There is no guaranteed profit.

  • Network fees are paid even when the transaction is reverted: failed strategies cost money.
  • Interacting with other protocols exposes you to contract failures, sharp price swings and market manipulation.
  • Programming errors can cause losses. Test first and use only what you understand.

04 — In practice

Who it is for

Typical uses in the professional market.

  • Collateral swap

    Swap the collateral of a position without having to close it first.

  • Refinancing

    Repay a position on one protocol and reopen it on another, in the same transaction.

  • Price differences

    Capture price differences between markets in a single transaction, with the risk that the difference may not be enough.

05 — What sets it apart

Alongside the account and the tools

On the platform, flash loans sit alongside the account, the wallet and the developer tools, built on a multichain architecture.

  • For professional users, with a clear risk warning
  • Clear rules and fees before you operate
  • Subject to the regulations applicable in each country

06 — Security

Protecting liquidity and those who use it

The transaction rule protects the pool; the account protects you.

  • Transaction reverted in full

    Without repayment, nothing is executed: the liquidity pool is never left exposed.

  • Signed on your device

    The transaction is signed by your wallet, with the key under your control.

  • Verified accounts

    Access is restricted to accounts with a verified identity.

07 — Questions

Frequently asked questions

What is a flash loan?

A loan that must be taken and repaid within the same transaction. If it is not repaid, the entire transaction is undone.

Do I need collateral?

Not in the traditional sense: the collateral is the transaction rule itself. However, network fees are paid even when the transaction is reverted.

Is it for me?

It is a product for professionals and developers. If you do not program transactions, it is not for you.

Atomic liquidity, next to your account

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Flash loans involve significant technical and market risks. Rules, fees and availability depend on the regulations applicable in each country.

Platform

More from the platform

Each product handles one part of your financial life. Together, they share the same account, the same access and the same protection.