> For the complete documentation index, see [llms.txt](https://wiki.eb.ie/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.eb.ie/crypto/flash_loans.md).

# Flash Loans

A flash loan is borrowing cryptocurrency for a very short period, sub-minutes to several seconds. No collatoral is required, but you pay back a 0.09% fee.

Used for arbitrage, and also [attacks](https://www.theverge.com/2022/4/18/23030754/beanstalk-cryptocurrency-hack-182-million-dao-voting)

## Links

* [What is Aave Lend](https://www.kraken.com/en-us/learn/what-is-aave-lend)