ArbSwap Fees
ArbSwap is an interface for swapping tokens through Arbitrum-based liquidity pools. This guide settles the cost question: the current ARB–USDT pool record shows a 0.30% swap fee, while gas, price impact, approvals, and any cross-network route can change the final amount. It also separates the web interface from the networks and routing service beneath it.
What does a swap actually cost?
A same-network ARB–USDT swap has a 0.30% pool fee before gas and price impact.
| Cost item | Number or status | What changes it |
|---|---|---|
| ARB–USDT pool fee on Arbitrum One | 0.30% of the input | The pool selected; this is not proof that every pool uses the same tier. |
| Fee on a $100 input | $0.30 | Input size. |
| Fee on a $1,000 input | $3.00 | Input size. |
| Network gas | Variable, paid in ETH | Network conditions and how much contract work the transaction performs. |
| Price impact and slippage | No fixed rate | Pool liquidity, trade size, route, and price movement before execution. |
| Cross-network route | No single published all-in figure | Bridge or routing path, source and destination execution, and the assets involved. |
The 0.30% figure is specific, not a platform-wide promise. The ARB–USDT pool record identifies the pool as Arbitrum One, records a 0.003 pool swap fee, and shows activity on 10 August 2026. A 0.003 fee is 0.30%, so the arithmetic is $0.30 per $100 of input before the transaction itself is submitted.
That distinction matters. A swap can display a modest pool fee and still deliver less than the simple fee calculation suggests. The shortfall may be an execution charge, a worse pool price for a large order, or a multi-step route—not evidence that the stated 0.30% fee was wrong.
Why 0.30% is not the total paid
The total paid is the pool fee plus the cost of executing the chosen route, with price impact treated as a trading cost rather than a separate posted fee.
Gas means the metered charge for blockchain computation; it is paid even when a transaction fails after consuming execution resources. For this exchange, it is the ETH amount the wallet estimates for approving a token or calling the swap contract. It changes with the network’s fee conditions and with the transaction: a first-time token approval often requires a separate transaction, while a simple repeat swap may not.
Price impact is different. An automated-market-maker pool adjusts its price as a trade consumes one side of its liquidity. The larger the order relative to available liquidity, the more the execution price can move away from the displayed marginal price. Slippage tolerance sets the minimum acceptable output, not an extra charge; a transaction can fail if the market moves beyond that limit.
A useful reading order is therefore: first compare the expected output, then the minimum received, then the displayed pool fee and gas estimate. The amount received is the number that already brings those moving parts together.
Which interface handles the trade?
The transaction is presented in a browser interface but is executed on a network through smart contracts.
- The web front end: the page a visitor opens to choose assets, connect a wallet, set slippage, and request a quote.
- The wallet interface: the wallet shows the contract request, ETH gas estimate, token approval, and final confirmation.
- Arbitrum One: the network named by the current ARB–USDT pool record and the place where that pool’s transaction executes.
- Arbitrum Nova: a second Arbitrum network described by the project’s public material for gaming-oriented activity.
- Symbiosis: the routing service named by the project for swaps that move assets between the two networks.
“Powered by Symbiosis, you can easily swap any token and move your assets across Arbitrum One and Arbitrum Nova in one trade.” — the project’s public page.
A cross-network transaction should not be priced as “0.30% plus a little gas.” It may involve a swap, a bridge or solver route, and destination-side delivery. The live quote and minimum-received amount are more useful than applying the ARB–USDT pool fee to an unrelated route.
What makes the final number move?
The final number moves when the pool, route, trade size, network state, or token approval state changes.
A different pair can use a different pool and fee configuration. A different network can require a different route. A larger order can create more price impact even if the percentage pool fee stays unchanged. An approval adds gas but does not buy tokens, so it is easy to overlook when comparing a first swap with a later one.
Token-specific transfer taxes are another possible difference: they are not established by the pool fee and should be treated as a separate property of the token contract. If a wallet cannot show a clear contract address, route, expected output, minimum received, and gas estimate, the cost cannot be checked well enough to treat the quote as final.
When is the site worth using?
The site is worth considering only when its quote, route, and wallet confirmation are intelligible and compare well with another route for the same input and slippage setting.
The https://arbswap.live/ page is the front end being considered, so it should be judged by the transaction it asks the wallet to sign rather than by a generic low-fee claim. It should show the destination network, token contract addresses, output estimate, minimum received, and gas cost before confirmation.
For a same-network ARB–USDT trade, 0.30% is a useful starting figure. For every other pair or a cross-network transfer, the practical answer is the all-in quote at that moment. A smaller displayed fee does not compensate for a worse route or thin liquidity.
Where the transaction is actually executed
The transaction is executed by the selected smart-contract route on Arbitrum One, Arbitrum Nova, or both—not by the browser page alone.
The ArbSwap page is only the interface that prepares the wallet request. Before signing, the wallet should be checked for the network, contract address, approval amount, gas charge, and minimum tokens to receive. Those details settle the real cost of that specific swap more reliably than any single headline percentage.