5 Ways to Reduce Slippage on Large Token Swaps

Slippage costs DeFi traders billions every year. In 2024, MEV bots extracted over $900 million from DEX traders through sandwich attacks alone, and cumulative MEV extraction on Ethereum has surpassed $1.5 billion since 2020. For large swaps, price impact routinely exceeds 2-5% on thin liquidity pools, meaning a $100,000 trade can lose $2,000-$5,000 before fees. Studies from Chainalysis show that over 30% of DEX trades experience slippage above 1%, while research from Flashbots found that roughly 1 in 30 Uniswap trades gets sandwiched. These are not edge cases. If you are executing swaps above $10,000, slippage reduction is not optional. This guide covers five actionable strategies to reduce slippage on large swaps, with code examples using swapapi.dev -- a free DEX aggregator API covering 46 EVM chains with no API key required. 1. Use a DEX Aggregator Instead of a Single Pool Single-pool swaps are the primary source of excessive slippage. When you swap 50 ETH through a single Uniswap p