Gas fees on Sui are paid in SUI tokens and cover the computational and storage resources used by a transaction. Fees are calculated based on gas price (set by the network) and gas units (determined by transaction complexity). Operations like storage use, computation, and object size affect the total cost. Sui often has low fees because it processes transactions in parallel and only charges for actual resource use. You can set a gas budget to cap spending, and any unused gas is refunded.

On Sui, gas fees are small amounts of SUI tokens you pay to process and confirm transactions on the network. They're used to compensate validators for computing and storing transaction data. While the term may sound complex, think of gas fees as the transaction fee you pay when you do anything on-chain—whether that's sending tokens, minting NFTs, or calling a smart contract.

What makes Sui unique is that its gas model is optimized for performance and cost-efficiency. Instead of relying on a global gas pool like Ethereum, Sui uses an object-based parallel execution system, which allows many transactions to be processed simultaneously, especially when they don’t touch the same objects. This increases throughput and helps keep fees low.

Here’s how gas works:

• You specify a gas budget when submitting a transaction. This is the max you're willing to spend.
• The network estimates the gas price (usually auto-filled by the Sui Wallet or SDK).
• After execution, only the actual gas used is deducted from your wallet, and any unused portion is refunded.
• If you run out of gas mid-transaction, the transaction fails and nothing changes on-chain, though you still pay for the computation attempted.

Sui breaks gas costs into three parts:

• Computation cost – For running logic in your Move contracts.
• Storage cost – For writing or updating on-chain data (this is refundable if you later delete that data).
• Storage rebate – Returned to you when objects are deleted, reducing your net cost.

Example using CLI:

sui client pay-sui \
  --recipient 0xAddress \
  --amount 1000000 \
  --gas-budget 2000000

You can view gas fees per transaction directly in Sui Explorer or after signing transactions in your wallet.

To learn more and see detailed breakdowns: https://docs.sui.io/learn/gas

Gas fees on Sui are small payments users make to compensate validators for processing and storing transactions. Every transaction on Sui consumes computational resources, and gas fees help prevent spam and prioritize work. Gas is paid using SUI tokens, and the amount depends on the complexity of the transaction. Simple transactions like transfers cost less than complex ones like minting NFTs or invoking smart contracts. Sui breaks gas into computation cost and storage cost, charging separately for execution and data written on-chain. Users set a gas budget when submitting a transaction, which is the maximum they’re willing to pay. If the transaction runs out of gas, it fails and no changes are saved. Validators compete to include transactions by considering gas offered, which can affect speed but not drastically due to Sui’s high throughput. Gas fees are typically very low due to Sui’s efficient execution and parallel processing. After execution, unused gas is refunded to the sender, making the system fair and predictable.

Gas fees on Sui are paid in SUI tokens and cover the computational and storage resources used by a transaction. Fees are calculated based on gas price (set by the network) and gas units (determined by transaction complexity). Operations like storage use, computation, and object size affect the total cost. Sui often has low fees because it processes transactions in parallel and only charges for actual resource use. You can set a gas budget to cap spending, and any unused gas is refunded.