What is a gas fee
A gas fee is the price paid for a unit of computation or data on a blockchain. Every transaction (a transfer, a smart-contract call, a token swap) consumes a measurable amount of work on the network, and the fee compensates the validators or miners that produce the block. Fees are denominated in the native token of the chain: ETH on Ethereum, SOL on Solana, MATIC on Polygon, ETH on most Ethereum Layer 2 networks.
On busy chains, fees vary widely with congestion. Ethereum mainnet has at times charged tens of dollars per simple transfer; at quieter periods the same transfer costs cents. Solana, Polygon, and Layer 2 networks deliver consistent sub-cent fees regardless of congestion. Bitcoin fees are typically one to five dollars per transaction.
How gas fees affect operator stacks
For deposits, the customer pays the gas fee when they broadcast the deposit transaction. For withdrawals, the operator pays the gas fee from the hot wallet when broadcasting the customer withdrawal. High-fee chains (Ethereum mainnet, Bitcoin during congestion) cut into withdrawal economics, particularly for low-value customer balances. Operators routinely set minimum withdrawal thresholds to keep gas economics positive.
Multi-chain operators steer customers toward low-fee chains for small transactions: USDT on Tron (sub-cent fees), USDC on Solana or Polygon, ETH on Arbitrum or Base instead of mainnet. The chain mix is a live operational lever, not a fixed configuration.
Why gas fees matter in B2B
For operators, gas-fee policy directly affects withdrawal margins, supported chain mix, and customer minimums. For PSPs, gas-fee management (paying out of the right hot wallet, batching withdrawals where possible) is a core part of crypto-payment service value. For platform vendors, supporting multiple chains per asset is the practical answer to gas-fee variability. Gamblers Connect tracks supported chains and minimum withdrawal thresholds across crypto operators in the iHub directory.
Frequently asked questions about What Is a Gas Fee in iGaming?
Solana (typically under one cent), Polygon (a few cents), Arbitrum and Base (a few cents to tens of cents), and Tron (sub-cent for USDT transfers). Ethereum mainnet is the most expensive major chain, with fees that can spike to tens of dollars under congestion.
The customer, because they are the party broadcasting the deposit transaction from their own wallet. The operator does not see the deposit gas fee directly, but customer behaviour (chain selection, deposit cadence) is shaped by it.
The operator, because the withdrawal transaction is broadcast from the operator’s hot wallet. Operators recover the cost through minimum-withdrawal thresholds and (for some operators) by deducting a flat withdrawal fee from the customer payout.
Yes, by one to two orders of magnitude versus Ethereum mainnet for equivalent transactions. Arbitrum, Base, Optimism, and Polygon zkEVM all settle to Ethereum but execute transactions at a fraction of the cost. Operators integrate Layer 2s specifically to make small-value transactions economical.