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Gas is a price for computation, not for value moved

Gas measures computation, not value. Why a swap costs more than a transfer, who receives the fee, and why it has nothing to do with the amount you send.

By FBT Swap · 5 October 2026

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        What it prices
        Computation and storage, not the value transferred
      
        Who receives it
        Validators, sequencers and (on some chains) a burn — never the interface
      
        Paid in
        The chain's own native coin

FBT Swap

What you should know

The most persistent misunderstanding in crypto is that network fees scale with the amount you send. They do not. Sending ten dollars and sending ten million dollars cost the same, because the network is charging for work, not for worth.

Gas is the unit of that work. Every operation a transaction performs has a fixed gas cost, and the total is multiplied by a price per unit that moves with demand for block space.

Gas used versus gas price

Gas used is determined by what your transaction does. A simple native transfer is the cheapest possible operation. A token transfer writes to a contract and costs several times more. A multi-hop swap touches several contracts and costs more again.

Gas price is what you pay per unit, set by competition for inclusion. The fee you pay is these two multiplied, which is why the same swap can cost wildly different amounts at different hours on the same network.

Who actually receives it

The fee goes to the validators or sequencers producing blocks, and on networks with a fee-burn mechanism part of it is destroyed rather than paid to anyone. None of it reaches the interface you used.

This matters when a swap fails. The computation happened, so the fee is owed, and no front end can refund it because no front end ever received it.

Why you need the right coin

Gas is paid in the native coin of the chain: ETH on Ethereum and most rollups, BNB on BNB Chain, POL on Polygon, AVAX on Avalanche, S on Sonic, MNT on Mantle, BERA on Berachain, MON on Monad, SOL on Solana.

A wallet holding a thousand dollars of USDT and no native coin cannot move anything. This is the most common reason a first transaction on a new network simply will not submit.

Estimating before you sign

A wallet estimates by simulating the transaction and adding a margin. The estimate can be wrong if the chain state changes between simulation and inclusion, which is why a gas limit exists as a ceiling.

FBT Swap shows the network and the route before signing, and your wallet shows the gas estimate in its own prompt. Both are worth reading — the platform fee of 0.70% is separate and is never taken from gas.

At a glance

What it prices

Computation and storage, not the value transferred

Who receives it

Validators, sequencers and (on some chains) a burn — never the interface

Paid in

The chain's own native coin

On failure

Still charged; the work was performed before the revert

FAQ

Frequently asked questions

Clear answers before you decide.

Why did my small transfer cost more than a large one?

Because cost follows the operations performed and the fee market at that moment, not the amount. A token transfer during congestion can easily cost more than a native transfer during a quiet block.

Can I pay gas in a stablecoin?

Not natively on the chains supported here. Some wallets and account-abstraction setups offer a paymaster that sponsors gas and bills you in another token, but the chain itself is still paid in its native coin.

Does the 0.70% platform fee include gas?

No. They are separate and go to different places. Gas goes to the network; the platform fee is shown in the quote before you sign and is charged on the input amount of supported swap routes.

Risk notice

Crypto assets are volatile and on-chain transactions cannot be reversed. You can lose money, including all of it. Nothing here is financial advice.