diff --git a/tests/core/contracts/test_contract_buildTransaction.py b/tests/core/contracts/test_contract_buildTransaction.py
index 85a8ffe324..637c4ddb84 100644
--- a/tests/core/contracts/test_contract_buildTransaction.py
+++ b/tests/core/contracts/test_contract_buildTransaction.py
@@ -54,8 +54,8 @@ def test_build_transaction_not_paying_to_nonpayable_function(
         'to': payable_tester_contract.address,
         'data': '0xe4cb8f5c',
         'value': 0,
-        'maxFeePerGas': 2750000000,
-        'maxPriorityFeePerGas': 10 ** 9,
+        'maxFeePerGas': 3750000000,
+        'maxPriorityFeePerGas': 2 * (10 ** 9),
         'chainId': 61,
     }
 
@@ -76,8 +76,8 @@ def test_build_transaction_with_contract_no_arguments(web3, math_contract, build
         'to': math_contract.address,
         'data': '0xd09de08a',
         'value': 0,
-        'maxFeePerGas': 2750000000,
-        'maxPriorityFeePerGas': 10 ** 9,
+        'maxFeePerGas': 3750000000,
+        'maxPriorityFeePerGas': 2 * (10 ** 9),
         'chainId': 61,
     }
 
@@ -88,8 +88,8 @@ def test_build_transaction_with_contract_fallback_function(web3, fallback_functi
         'to': fallback_function_contract.address,
         'data': '0x',
         'value': 0,
-        'maxFeePerGas': 2750000000,
-        'maxPriorityFeePerGas': 10 ** 9,
+        'maxFeePerGas': 3750000000,
+        'maxPriorityFeePerGas': 2 * (10 ** 9),
         'chainId': 61,
     }
 
@@ -108,8 +108,8 @@ def test_build_transaction_with_contract_class_method(
         'to': math_contract.address,
         'data': '0xd09de08a',
         'value': 0,
-        'maxFeePerGas': 2750000000,
-        'maxPriorityFeePerGas': 10 ** 9,
+        'maxFeePerGas': 3750000000,
+        'maxPriorityFeePerGas': 2 * (10 ** 9),
         'chainId': 61,
     }
 
@@ -123,8 +123,8 @@ def test_build_transaction_with_contract_default_account_is_set(
         'to': math_contract.address,
         'data': '0xd09de08a',
         'value': 0,
-        'maxFeePerGas': 2750000000,
-        'maxPriorityFeePerGas': 10 ** 9,
+        'maxFeePerGas': 3750000000,
+        'maxPriorityFeePerGas': 2 * (10 ** 9),
         'chainId': 61,
     }
 
@@ -167,14 +167,14 @@ def test_build_transaction_with_contract_to_address_supplied_errors(web3,
         (
             {}, (5,), {}, {
                 'data': '0x7cf5dab00000000000000000000000000000000000000000000000000000000000000005',  # noqa: E501
-                'value': 0, 'maxFeePerGas': 2750000000, 'maxPriorityFeePerGas': 1000000000,
+                'value': 0, 'maxFeePerGas': 3750000000, 'maxPriorityFeePerGas': 2 * (10 ** 9),
                 'chainId': 61,
             }, False
         ),
         (
             {'gas': 800000}, (5,), {}, {
                 'data': '0x7cf5dab00000000000000000000000000000000000000000000000000000000000000005',  # noqa: E501
-                'value': 0, 'maxFeePerGas': 2750000000, 'maxPriorityFeePerGas': 1000000000,
+                'value': 0, 'maxFeePerGas': 3750000000, 'maxPriorityFeePerGas': 2 * (10 ** 9),
                 'chainId': 61,
             }, False
         ),
@@ -194,14 +194,14 @@ def test_build_transaction_with_contract_to_address_supplied_errors(web3,
         (
             {'nonce': 7}, (5,), {}, {
                 'data': '0x7cf5dab00000000000000000000000000000000000000000000000000000000000000005',  # noqa: E501
-                'value': 0, 'maxFeePerGas': 2750000000, 'maxPriorityFeePerGas': 1000000000,
+                'value': 0, 'maxFeePerGas': 3750000000, 'maxPriorityFeePerGas': 2 * (10 ** 9),
                 'nonce': 7, 'chainId': 61,
             }, True
         ),
         (
             {'value': 20000}, (5,), {}, {
                 'data': '0x7cf5dab00000000000000000000000000000000000000000000000000000000000000005',  # noqa: E501
-                'value': 20000, 'maxFeePerGas': 2750000000, 'maxPriorityFeePerGas': 1000000000,
+                'value': 20000, 'maxFeePerGas': 3750000000, 'maxPriorityFeePerGas': 2 * (10 ** 9),
                 'chainId': 61,
             }, False
         ),
diff --git a/web3/eth.py b/web3/eth.py
index 2dc05952ad..35c3fe27bf 100644
--- a/web3/eth.py
+++ b/web3/eth.py
@@ -356,7 +356,11 @@ async def hashrate(self) -> int:
 
     @property
     async def max_priority_fee(self) -> Wei:
-        return await self._max_priority_fee()  # type: ignore
+        fee_history = await self.fee_history(20, 'pending', [float(1)])
+        priority_fees_per_gas = fee_history['reward']
+        fees_sum = sum([fee[0] for fee in priority_fees_per_gas])
+        max_priority_fee_estimate = round(fees_sum/len(priority_fees_per_gas))
+        return Wei(max_priority_fee_estimate)
 
     @property
     async def mining(self) -> bool:
@@ -604,7 +608,11 @@ def chainId(self) -> int:
 
     @property
     def max_priority_fee(self) -> Wei:
-        return self._max_priority_fee()
+        fee_history = self.fee_history(20, 'pending', [float(1)])
+        priority_fees_per_gas = fee_history['reward']
+        fees_sum = sum([fee[0] for fee in priority_fees_per_gas])
+        max_priority_fee_estimate = round(fees_sum/len(priority_fees_per_gas))
+        return Wei(max_priority_fee_estimate)
 
     def get_storage_at_munger(
         self,
diff --git a/web3/providers/eth_tester/defaults.py b/web3/providers/eth_tester/defaults.py
index a33d337ef6..532b03ffae 100644
--- a/web3/providers/eth_tester/defaults.py
+++ b/web3/providers/eth_tester/defaults.py
@@ -213,7 +213,9 @@ def personal_send_transaction(eth_tester: "EthereumTester", params: Any) -> HexS
         'mining': static_return(False),
         'hashrate': static_return(0),
         'chainId': static_return('0x3d'),
-        'feeHistory': not_implemented,
+        'feeHistory': static_return(
+            {'baseFeePerGas': [134919017071, 134775902021, 117928914269], 'gasUsedRatio': [0.4957570088140204, 0.0],
+             'oldestBlock': 13865084, 'reward': [[2500000000], [1500000000]]}),
         'maxPriorityFeePerGas': static_return(10 ** 9),
         'gasPrice': static_return(10 ** 9),  # must be >= base fee post-London
         'accounts': call_eth_tester('get_accounts'),