# ERC-20

ERC-20 is a token standard that allows developers to create and issue smart contracts on the Ethereum network. Tokens made to the ERC-20 standard can have many functions such as paying for goods and services or used to represent things like loyalty rewards.

## The fungible token standard

Ethereum didn't just implement the use of tokens, it’s based on them and ERC-20 is one of the most important Ethereum token standards. The ERC-20 introduces a standard for fungible tokens meaning that 1 token is and will always be equal to all the other tokens of the same kind.

## Related

- [What we support](/what-we-support) · [Contracts Data](/products/contracts) · [Developer portal](https://developers.cryptoapis.io/)