ARB: swapping the Arbitrum governance token

ARB is the token used to govern the Arbitrum ecosystem, and holders can vote on proposals that steer the network's direction. It's an ERC-20 that lives primarily on Arbitrum, with liquidity on Ethereum and elsewhere.

The common confusion is treating ARB as Arbitrum's gas token. It isn't. Transactions on Arbitrum are paid in ETH, like other Ethereum rollups. ARB is a governance and ecosystem asset you might hold or trade, separate from the ETH you need to transact.

Because ARB is an ERC-20, swapping it into or out of ETH, stablecoins, or other assets is a same-chain swap on Arbitrum, or a cross-chain route if you want the proceeds on a different network. Multiswap compares those routes, ranks them by net received, and lets you swap non-custodially.

As with any ERC-20, a swap out of ARB needs a token approval first, and you'll want a little ETH on Arbitrum to cover gas for both the approval and the swap.

It's worth being deliberate about which you're moving. If you're swapping ARB as an asset, that's one action. If you just need gas to transact on Arbitrum, you need ETH, not more ARB. Mixing the two up leads to holding ARB you can't use because there's no ETH for fees.

When you swap onto Arbitrum, receiving a little ETH alongside any ARB keeps you able to act on both.

ARB is the voting token for the Arbitrum DAO, the community body that oversees the Arbitrum ecosystem rather than a single product. That scope covers the main Arbitrum rollups and a large treasury, and holders can vote on proposals that direct funding and technical decisions. Much of the initial supply was distributed to early users and contributors, which is how many people first received it.

For someone swapping ARB, the useful takeaway is that its value proposition is governance and ecosystem exposure, not a claim on network fees. That framing helps set realistic expectations: you are trading a governance asset, and the ETH you keep for gas is a separate, purely practical balance.