From bfad5815463111914876bb9299616031c4a856d3 Mon Sep 17 00:00:00 2001
From: pdobacz <5735525+pdobacz@users.noreply.github.com>
Date: Wed, 8 Jul 2026 17:34:02 +0200
Subject: [PATCH] Revert feat(monad_next): burn priority fees instead of
 crediting coinbase

---
 src/ethereum/forks/monad_next/fork.py              | 14 ++++----------
 .../monad_eight/reserve_balance/test_transfers.py  |  5 ++---
 2 files changed, 6 insertions(+), 13 deletions(-)

diff --git a/src/ethereum/forks/monad_next/fork.py b/src/ethereum/forks/monad_next/fork.py
index 06e3a5fabb7..d8284e126c5 100644
--- a/src/ethereum/forks/monad_next/fork.py
+++ b/src/ethereum/forks/monad_next/fork.py
@@ -1009,21 +1009,15 @@ def process_transaction(
     # gas_refund_amount = tx_gas_left * effective_gas_price
 
     # For non-1559 transactions effective_gas_price == tx.gas_price
-    # NOTE: commented out, see MIP-11 shim below
-    # TODO: uncomment and adjust after MIP-11 lands here
-    # priority_fee_per_gas = effective_gas_price - block_env.base_fee_per_gas
-    # transaction_fee = tx.gas * priority_fee_per_gas
+    priority_fee_per_gas = effective_gas_price - block_env.base_fee_per_gas
+    transaction_fee = tx.gas * priority_fee_per_gas
 
     # Monad: gas is not refunded to the sender (note absence of
     # create_ether(tx_state, sender, U256(gas_refund_amount)) here).
     add_sender_authority(block_env.state, block_env.number, sender)
 
-    # MIP-11 shim: priority fees are routed to the staking distribution
-    # address and paid out to the proposer's validator and delegators. In
-    # tests no proposer is wired up, so distribution finds an unknown
-    # validator and the fees are burned rather than credited to the
-    # coinbase. Burn them here so post-state roots match a client that
-    # implements MIP-11 fully.
+    # transfer miner fees
+    create_ether(tx_state, block_env.coinbase, U256(transaction_fee))
 
     for address in tx_output.accounts_to_delete:
         destroy_account(tx_state, address)
diff --git a/tests/monad_eight/reserve_balance/test_transfers.py b/tests/monad_eight/reserve_balance/test_transfers.py
index be3fdcf3140..5a06d5b19ce 100644
--- a/tests/monad_eight/reserve_balance/test_transfers.py
+++ b/tests/monad_eight/reserve_balance/test_transfers.py
@@ -18,7 +18,7 @@
     Op,
     Transaction,
 )
-from execution_testing.forks import MONAD_EIGHT, MONAD_NEXT
+from execution_testing.forks import MONAD_EIGHT
 from execution_testing.forks.helpers import Fork
 from execution_testing.test_types.helpers import compute_create_address
 from execution_testing.tools.tools_code.generators import Initcode
@@ -1152,8 +1152,7 @@ def test_credit_with_transaction_fee(
     gas_price = 10
     base_fee_per_gas = 7
     priority_gas_price = gas_price - base_fee_per_gas
-    # MIP-11 burns priority fees rather than crediting the coinbase.
-    reward = 0 if fork >= MONAD_NEXT else gas_limit * priority_gas_price
+    reward = gas_limit * priority_gas_price
 
     tx_1 = Transaction(
         gas_limit=gas_limit,