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Priority Fee Refund Program

Earn refunds on ETH Mainnet MEV Bundles & Private Transactions

bloXroute’s Priority Fee Refund Program lets transaction originators (e.g. searchers, wallets, Telegram bots) receive on-chain refunds for the priority fee (tip) spent—without sacrificing inclusion rate.

Builders in the program bid competitively to return a portion of their profit from your transaction's priority fee.

Note that to qualify, your transaction must be exclusive to bloXroute. If you send it to other builders directly, no refund will be issued.

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How It Works

  1. Send your bundle or private transaction using blxr_submit_bundle or blxr_private_tx.

  2. Set these parameters in your request:

    • priority_fee_refund: true

    • refund_recipient: "<your_wallet_address>"

  3. bloXroute selects the builder:

    • Before the next slot, bloXroute evaluates which participating builder has the highest chance to win and offers the best refund bid.

    • If builder A consistently builds better blocks than others, your transaction stays exclusive with builder A.

    • If builder A falls behind, bloXroute will fall back to broadcast to all builders (as specified).

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Refund Eligibility

  • Refunds are issued only if your transaction remains exclusive to a participating builder.

  • Refunds are based on the builder’s profit margin from your transaction.

  • Refunds are paid on-chain, typically within 1–2 hours after inclusion.

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Example

  • Builder A (in the refund program) vs Builder B (not in program).

  • If Builder A consistently builds more profitable blocks, your tx is sent only to them = refund eligible.

  • If Builder B takes the lead at any point, tx is sent to all → no refund.

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