Transaction Fee

The total SOL cost to submit a transaction on Solana, composed of the base fee (5,000 lamports per signature) plus any optional priority fee (compute unit price × compute units consumed). Unlike Ethereum, Solana fees are not purely dynamic gas auctions — the base fee is fixed and priority fees are additive. Fees are deducted from the fee-payer account before execution; if the account lacks sufficient SOL, the transaction fails.