
ERC20 fees are high for three interconnected reasons: Ethereum's limited throughput (15–30 transactions per second), the computational complexity of smart contract execution, and the competitive bidding mechanism where users pay more to prioritize their transactions.
Unlike traditional payment systems, Ethereum has no central authority to set fees. Gas prices emerge from an open market where millions of users compete for limited block space. During periods of high demand — market crashes, NFT launches, major DeFi events — this competition drives fees to extreme levels.
The Throughput Problem
Ethereum mainnet handles approximately 15–30 transactions per second. Bitcoin processes around 7 TPS. In contrast, Visa handles 24,000 TPS. With millions of Ethereum users competing for the same 15–30 TPS capacity, even modest demand spikes cause significant fee increases.
Smart Contract Overhead
A native ETH transfer requires 21,000 gas units — a simple, fixed operation. An ERC20 transfer calls the token contract's transfer() function, requiring 50,000–80,000 gas units. More complex operations like DEX swaps or liquidity provision can require 150,000–500,000 gas units, multiplying costs accordingly.
Exchange Withdrawal Fees
When withdrawing ERC20 tokens from centralized exchanges like Coinbase or Binance, you pay a flat fee set by the exchange rather than the live network fee. Coinbase charges approximately $5–$8 for ERC20 withdrawals; Binance charges around $3–$5. These flat fees simplify pricing but may not reflect actual network conditions at the time of withdrawal.
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