Ethereum's Layer-2 ecosystem has matured significantly by 2026. Millions of users now route their ERC20 transfers through L2 networks to avoid mainnet gas fees while retaining Ethereum's security guarantees.

What Is a Layer-2 Network?

A Layer-2 (L2) network processes transactions off the Ethereum mainnet but periodically submits compressed batches of transaction data back to mainnet for final settlement. This "rollup" approach allows L2s to share Ethereum's security while charging a fraction of the cost.

Leading L2 Networks for ERC20 Transfers

Arbitrum One is the largest Ethereum L2 by total value locked. ERC20 transfers cost $0.05–$0.30. Major exchanges including Binance, OKX, and Coinbase support Arbitrum deposits and withdrawals.

Base (by Coinbase) has grown rapidly since its 2023 launch. ERC20 transfers typically cost $0.01–$0.20. Coinbase users can deposit and withdraw on Base with zero additional fees.

Optimism offers similarly low fees at $0.05–$0.25 per ERC20 transfer and is used heavily by Synthetix and other DeFi protocols.

Moving from Ethereum mainnet to Arbitrum for your ERC20 transfers saves approximately $5–$25 per transaction at average gas prices.

How to Bridge ERC20 Tokens to Layer-2

The process involves four steps. First, connect your wallet (MetaMask, Rabby) to the official bridge for your chosen L2. Second, select the token and amount you want to bridge. Third, approve the bridge contract and pay one mainnet gas fee. Fourth, your tokens arrive on L2 within 1–10 minutes and all subsequent transfers cost under $0.50.

Security Considerations

Use only official bridges (bridge.arbitrum.io, bridge.base.org) to avoid phishing. Optimistic rollups like Arbitrum and Optimism have a 7-day challenge window for withdrawals back to mainnet — plan accordingly for large amounts.

L2 Fee Comparison

Arbitrum: $0.05–$0.30 | Base: $0.01–$0.20 | Optimism: $0.05–$0.25 | zkSync Era: $0.02–$0.15 | Polygon zkEVM: $0.01–$0.10