How to Check Transaction Fees on Sui Network
You can see an estimated Sui gas fee in your wallet before you sign, then confirm the charged fee with the transaction digest in a Sui explorer.
Vahe HakobyanEditor-in-chief
Updated Oct 6, 20263 min readFact-checked
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Sui charges gas on every transaction, and the amount varies with computation and storage. The estimate appears before you sign, and the explorer shows the real fee after.
What you need before you start
Sui gas is usually paid in SUI, so your signing wallet needs SUI unless a sponsor covers the fee. Set the wallet to Sui Mainnet before you check any fee, because another network will not show real Sui gas.
How to check Sui transaction fees
Your wallet shows an estimated Sui gas fee before you sign. After you sign, a Sui block explorer shows the fee charged. Sui has recorded Mainnet transactions since 2023, so an explorer holds past fees you can search by digest or address.
- 1Select Sui MainnetOpen your wallet and select Sui Mainnet. Check the network name before you build the transaction, because another network will not match real SUI gas.
- 2Open the previewBuild the transaction, enter the details, and open the confirmation screen without signing. Read the estimated gas fee in SUI. If the field is blank, wait for the wallet to simulate.
- 3Sign and copy the digestApprove the transaction only after you review the estimate, then copy the digest the wallet shows. You need it for the lookup.
- 4Look up the digestPaste the digest into a Sui block explorer. The transaction page shows the actual fee charged and the gas used. Search past transactions there to review earlier fees.
What Sui fees include and records
Sui gas is paid in SUI and covers computation plus storage. Computation pays validators for processing, and storage pays for new data written to the network. Keep a fee record, because the IRS treats crypto as property and paying gas with SUI is a taxable disposal. Note the date, digest, SUI amount, and US dollar value at payment.
Frequently asked questions
A wallet may show a blank estimate while it simulates the transaction and waits for network data. A blank estimate does not mean the transaction is free.
Many Sui wallets let you set a gas price, and Sui uses a reference gas price as a guide. A higher gas price can raise what you offer validators, but the final fee still follows computation and storage.
Sui charges storage for new data a transaction leaves on chain. When a later transaction deletes or frees that data, Sui returns part of the original storage charge.
The fee is denominated in SUI. Usually the signing wallet pays it with SUI, but a sponsored transaction is the exception: the sponsor pays, and the signing wallet does not need SUI for gas.
