What is a Liquidity Pool? Complete Beginner’s Guide

·

Liquidity pools are the engine that powers decentralized exchanges. This guide explains what they are, how they work, and how you can earn by providing liquidity.

What is a Liquidity Pool?

A liquidity pool is a collection of tokens locked in a smart contract. These tokens provide the liquidity that enables trading on DEXs. When you swap ETH for USDC, you’re trading against a pool, not another person.

AMM Mechanics Diagram
How liquidity pools enable decentralized trading

How Liquidity Providers Earn

  • Trading Fees: A percentage of every swap goes to LPs
  • Token Rewards: Many protocols reward LPs with governance tokens
  • Yield Farming: Stake LP tokens for additional rewards

Key Takeaways

  • Liquidity pools are pairs of tokens locked in smart contracts
  • LPs earn fees from every trade
  • Impermanent loss is the main risk for LPs
  • Higher fees often mean higher risk