SkalespaceSkalespace gas fees
SKALE transaction costs depend on the chain model. Ethereum-connected sFUEL chains have zero monetary gas fees, SKALE Base Mainnet uses purchased CREDIT for compute, and SKALE Expand deployments can run gas chains that charge users per transaction.
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sFUEL on Ethereum-connected SKALE chains
Ordinary transactions consume sFUEL from a wallet’s balance. This native gas token has no monetary value and preserves Ethereum Virtual Machine (EVM) compatibility for wallets, tools, and SDKs. The SKALE Chain owner pays a subscription for the chain’s operation. sFUEL is pre-minted and recycled onchain into a distribution pool.
Zero gas fee chains can also enable Proof-of-Work gasless transactions. For that optional path, the client computes a "magic number" that replaces the gas-token payment, allowing users to transact without holding sFUEL. Availability depends on the chain enabling this option.
Paid compute on SKALE Base
SKALE Base Mainnet uses CREDIT tokens to fund compute. Developers, users, or both purchase credits. Sending transactions deducts compute from the account’s credits without requiring a separate gas token. CREDIT consumption depends on transaction compute complexity.
SKALE Base Testnet supplies credits through a faucet without requiring a purchase. This testnet funding arrangement is separate from the purchased-credit model on SKALE Base Mainnet.
A hypothetical CREDIT budget
For a hypothetical SKALE Base Mainnet workload, assume an account holds 137 CREDIT and each transaction deducts 7 CREDIT for compute. Assume that deduction stays the same throughout the workload.
The balance covers compute for 19 such transactions:
19 * 7 = 133
CREDIT consumed, with
137 - 133 = 4
CREDIT left. At the same hypothetical deduction, the budget is 3 CREDIT short of funding compute for a twentieth transaction. Higher consumption per transaction would reduce the number covered. A monetary estimate also needs the actual purchase cost of the credits.
Token gas on SKALE Expand deployments
A SKALE Expand deployment can be configured as a gas chain. Users then pay per transaction in its configured gas token, which can be SKL, ETH, or an ERC-20 token such as USDC. The selected token gives the unit of the gas charge.
Gas fees and bridge availability
A gas model describes execution on the selected chain. It does not establish the total cost or availability of an entire cross-chain route.
In its October 6, 2026 IMA Bridge security update, SKALE reported that the affected bridge functionality associated with SKALE on Ethereum remained paused following an exploit. The same update said SKALE on Base was a separate deployment that was not affected.