What a bank would do — and what you do instead
A bank picks its payment rails and you never think about them. When you hold your own money on-chain, the network you choose sets your fees, your speed, which apps you can use and which extra risks you take on. Choosing a chain is less like choosing a bank and more like choosing which country your vault sits in.
At a glance
| Chain | Fees | Lending example (as of late September 2026, variable) | Watch out for |
|---|---|---|---|
| Ethereum | Highest | Aave V3 USDC lenders ~3.62% (Sept 24, 2026) | Gas costs on small amounts |
| Base | Low | Aave USDC ~3.98% | Single sequencer; ties to Coinbase |
| Arbitrum | Low | Aave USDC ~4.92% | L2 bridge and sequencer assumptions |
| Solana | Very low | Jupiter Lend USDC ~5.47% APY (~$424M TVL) | Different tooling; past network outages |
L2 USDC rates often run 0.5–1.5 points above mainnet. Kamino is the largest Solana lender, with about $1.38B in lending TVL in September 2026.
Choosing
- Large, long-term balances: Ethereum mainnet’s track record may be worth the fees.
- Everyday moves and smaller balances: Base or Arbitrum keep fees low while settling to Ethereum.
- Solana ecosystem users: very low fees and its own lenders and staking.
Frequently asked questions
Is Base owned by Coinbase?
Base was built and is operated by Coinbase as an Ethereum layer 2. It settles to Ethereum.
Should I chase the highest-rate chain?
Not on rate alone. Factor in bridge risk, fees and the protocol’s track record on that chain.
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