You pay the gas fees. There is no exception to this rule on centralized platforms or on-chain earn products. The platform can initiate transactions for you, but the fees required for on-chain confirmation are deducted from your principal or earnings. You can usually check the final cost details in your transaction records.
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Where Gas Fees Occur
On-chain earn products such as ETH 2.0 staking and certain DeFi protocol vaults work by having the platform manage on-chain contracts for you. Any operation that involves on-chain contract interaction will generally generate gas fees:
When subscribing (depositing): Moving funds into an on-chain contract requires one layer of gas.
When redeeming (withdrawing): Withdrawing assets from a contract usually triggers another on-chain transaction.
When rewards are reinvested or positions are automatically adjusted: To maintain yield, the system may execute reinvestment or rebalancing instructions regularly or based on certain conditions. For DeFi vaults, frequent reinvestment may be split into multiple small transactions, and gas fees will add up.
How Fees Are Deducted and How Much
Different types of on-chain products handle gas fee responsibility and deduction differently:
ETH 2.0 staking products (such as BETH): For most of these products, the platform covers the gas fees for staking and redemption. User earnings are net earnings after node operating fees have been deducted. Users do not directly perceive individual gas fees, but from an opportunity cost perspective, these fees are already included in the quoted rate.
DeFi protocol products (such as liquidity mining and vaults): In most cases, users bear the gas fees for all on-chain operations, including subscribing, redeeming, and claiming rewards. The platform deducts these fees directly from your assets or earnings. The total earnings you see are usually net earnings after management fees and gas fees have already been deducted.
How to Check How Much You Paid
In the OKX App, go to Assets → Earn or On-Chain Earn, find the specific product, and check Transaction Records or Earnings Details. If fees were charged, they are usually labeled as "Miner Fee" or "Gas Fee." If the records do not list a separate charge, but the product description states that "all on-chain fees have been deducted from earnings," it means the gas fee is already included in the yield you see and will not appear as a separate deduction.
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Two Common Misunderstandings
Misunderstanding 1: If I use the platform's "crypto savings" feature, the platform should cover all fees. Crypto savings and on-chain earn are different. The former is centralized lending and does not consume on-chain gas. The core of on-chain earn is on-chain interaction. If the platform does not explicitly promise "no gas fees," then you need to bear this cost.
Misunderstanding 2: The displayed yield is exactly what I will receive, with no further deductions. High annualized yields usually refer to the theoretical value before deducting on-chain gas fees. The actual amount you receive will definitely be lower. When the network is congested, frequent position adjustments may even eat up most of your earnings.
How to verify after completing an operation: After confirming the fee rate, go to Earn → On-Chain Earn, find the corresponding product, and check "Earnings Records" or "Transaction Details." Confirm whether there are one or more deductions marked as "Gas Fee" or "Miner Fee," and whether these deductions are already reflected in your earnings. If you find that the deducted amount clearly does not match the product description, contact customer service for verification.
