Stablecoin Transfer Fees

How to read these numbers

• Cheapest — the lowest-fee network right now. Usually Base or Arbitrum. If you're sending a routine transfer and don't already hold funds on a specific chain, start here.
• Low / Normal / High — relative to the cheapest. "High" means the network is dramatically more expensive than the cheapest option — usually Ethereum mainnet when gas is up.
• Confidence: Exact — the fee model is complete: mainnet and Polygon standard tier, Arbitrum (L1 cost bundled into its gas price), and OP Stack chains (Optimism, Base) where the live L1 data fee was successfully queried. The number is a full wallet-fee estimate, excluding the wallet's own padding.
• Confidence: Estimate — shown only when the live L1-fee lookup for an OP Stack chain was temporarily unavailable, so that row covers L2 execution only. Rare; the real quote would be slightly higher.

What actually changes the fee: USDC vs USDT vs DAI

All three are dollar-pegged ERC-20s, but they don't cost the same to move. The fee is gas units × gas price, and the gas units depend on how the token's contract is written — specifically how it updates balances and whether it touches a fresh storage slot:

• USDC — ~55,000 gas. The cheapest of the three per transfer. Circle's contract is comparatively lean.
• USDT — ~63,000 gas. Tether's contract does slightly more bookkeeping per transfer, so it costs ~15% more gas than USDC at the same Gwei. On mainnet that's real money; on an L2 it's fractions of a cent.
• DAI — ~50,000 gas. Marginally cheaper than USDC, but DAI is less widely accepted by exchanges and merchants — the gas saving rarely outweighs the convenience gap.

One extra cost applies on your first interaction with a new app: an ERC-20 approve transaction before the first transfer through a contract. That's a one-time fee per token/app pair, not per transfer.

The native-vs-bridged trap (USDC.e)

This catches people constantly and it has nothing to do with gas. On several L2s there are two different USDC tokens: native USDC issued directly by Circle, and bridged USDC (shown as USDC.e) that came across the official bridge before Circle deployed natively. They are not the same token and don't auto-convert:

• Sending USDC.e to someone (or an exchange) expecting native USDC can mean it isn't credited, or has to be swapped first.
• Native USDC redeems 1:1 with Circle and is what Coinbase withdrawals and CCTP use. Bridged USDC.e relies on the bridge's backing, so it carries a thin extra trust assumption.
• Arbitrum and Optimism both have native + bridged variants live today. Base has native USDC, but bridged USDbC can still show up in older liquidity pools and wallets — so always check the contract address, not just the ticker.

Before sending, check the token's contract address against the issuer's official list — not just the ticker your wallet shows. When in doubt, hold and send native USDC.

Which network should you actually use?

Work down this list — the first line that matches is usually your answer:

1. Funds already on a chain? Send from there if the fee is reasonable — a bridge to a cheaper chain often costs more than the fee you'd save.
2. Recipient is a CEX? Match the network and token they list. Sending native USDC to a Base deposit address that only supports Ethereum-ERC20 risks a lost deposit.
3. On Coinbase already? Withdraw native USDC straight to Base — free and instant, no bridge step.
4. Just want cheapest, no constraints? Take whichever L2 the live table above ranks cheapest right now — usually Base or Arbitrum.

When mainnet is the right choice

Three cases where paying mainnet fees is justified: (1) the recipient is a centralized exchange that only accepts ERC-20 on Ethereum, (2) you're settling a large amount (> $10k) and the per-tx fee is a tiny percentage, (3) you need L1 finality for legal / counterparty reasons. For everything else — payments, payroll, routine transfers — an L2 saves 90–99% of the cost.

Frequently asked questions