diff --git a/CHANGELOG.md b/CHANGELOG.md
index 60245b8b0fa..1fb86263fc6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -419,3 +419,8 @@ Released with 1.0.0-beta.37 code base.
 ## [Unreleased]
 
 ## [1.5.1]
+
+### Added
+
+- `maxPriorityFeePerGas` and `maxFeePerGas` now included in `_txInputFormatter` (#4217)
+- If `maxPriorityFeePerGas` of `maxFeePerGas` present `_txInputFormatter` deletes `tx.gasPrice` (fixes #4211) (#4217)
diff --git a/packages/web3-core-helpers/src/formatters.js b/packages/web3-core-helpers/src/formatters.js
index eef58403a91..8947c68b94f 100644
--- a/packages/web3-core-helpers/src/formatters.js
+++ b/packages/web3-core-helpers/src/formatters.js
@@ -157,8 +157,12 @@ var _txInputFormatter = function (options) {
     if (options.gas || options.gasLimit) {
         options.gas = options.gas || options.gasLimit;
     }
+    
+    if (options.maxPriorityFeePerGas || options.maxFeePerGas) {
+        delete options.gasPrice;
+    }
 
-    ['gasPrice', 'gas', 'value', 'nonce'].filter(function (key) {
+    ['gasPrice', 'gas', 'value', 'maxPriorityFeePerGas', 'maxFeePerGas', 'nonce'].filter(function (key) {
         return options[key] !== undefined;
     }).forEach(function (key) {
         options[key] = utils.numberToHex(options[key]);
diff --git a/test/eth.accounts.signTransaction.js b/test/eth.accounts.signTransaction.js
index 6d1331d9388..3c9eb2d229b 100644
--- a/test/eth.accounts.signTransaction.js
+++ b/test/eth.accounts.signTransaction.js
@@ -3,6 +3,7 @@ var Web3 = require('../packages/web3');
 var Accounts = require("./../packages/web3-eth-accounts");
 var chai = require('chai');
 var assert = chai.assert;
+var bn = require('bn.js');
 
 var common = {
     baseChain: 'mainnet',
@@ -649,6 +650,52 @@ var tests = [
         transactionHash: "0xbc2c9edab3d4e3a795fa402b52d6149e874de15f0cc6c0858eb34e1fe1ef31fe",
         messageHash: "0xa3a2cdc45e9cefb9a614ead90ce65f68bcf8a90dbe0ccbd84c1b62403bd05346"
     },
+    {
+        // test #28
+        address: '0x2c7536E3605D9C16a7a3D7b1898e529396a65c23',
+        iban: 'XE0556YCRTEZ9JALZBSCXOK4UJ5F3HN03DV',
+        privateKey: '0x4c0883a69102937d6231471b5dbb6204fe5129617082792ae468d01a3f362318',
+        transaction: {
+            chainId: 1,
+            nonce: 0,
+            maxPriorityFeePerGas: new bn('0x3B9ACA00'),
+            maxFeePerGas: new bn('0xB2D05E00'),
+            gasLimit: '0x6A40',
+            to: '0xF0109fC8DF283027b6285cc889F5aA624EaC1F55',
+            toIban: 'XE04S1IRT2PR8A8422TPBL9SR6U0HODDCUT', // will be switched to "to" in the test
+            value: "1000000000",
+            data: "",
+            common: commonLondon
+        },
+        // signature from eth_signTransaction
+        rawTransaction: "0x02f86e018084c733124884cb72ec20826a4094f0109fc8df283027b6285cc889f5aa624eac1f55843b9aca0080c001a08896fb9a5c033e0163b073cf7a951a1db2dca41b26b4188f13a05158eb26fd32a005e8855691199cd0b6dcae88f3325c374e2f0697b9c528a5c10d5bd8dfb6a3e3",
+        oldSignature: "0x02f86e018084c733124884cb72ec20826a4094f0109fc8df283027b6285cc889f5aa624eac1f55843b9aca0080c001a08896fb9a5c033e0163b073cf7a951a1db2dca41b26b4188f13a05158eb26fd32a005e8855691199cd0b6dcae88f3325c374e2f0697b9c528a5c10d5bd8dfb6a3e3",
+        transactionHash: "0xd5b7290a477b9c421d39e61d0f566ec33276fb49b9ff85cfd6152a18f1c92dab",
+        messageHash: "0x17e20e530a889ce52057de228b5b97edcad6002468d723346cd0b6b7a9943457"
+    },
+    {
+        // test #29
+        address: '0x2c7536E3605D9C16a7a3D7b1898e529396a65c23',
+        iban: 'XE0556YCRTEZ9JALZBSCXOK4UJ5F3HN03DV',
+        privateKey: '0x4c0883a69102937d6231471b5dbb6204fe5129617082792ae468d01a3f362318',
+        transaction: {
+            chainId: 1,
+            nonce: 0,
+            maxPriorityFeePerGas: '1000000000',
+            maxFeePerGas: '3000000000',
+            gasLimit: '0x6A40',
+            to: '0xF0109fC8DF283027b6285cc889F5aA624EaC1F55',
+            toIban: 'XE04S1IRT2PR8A8422TPBL9SR6U0HODDCUT', // will be switched to "to" in the test
+            value: "1000000000",
+            data: "",
+            common: commonLondon
+        },
+        // signature from eth_signTransaction
+        rawTransaction: "0x02f86e0180843b9aca0084b2d05e00826a4094f0109fc8df283027b6285cc889f5aa624eac1f55843b9aca0080c080a0d1290a118d51918c1ca17e3af0267c45efcd745cf42e78eabc444c424d6bcf37a003c81e1fda169575023a94200ee034128747f91020e704abaee30dbcfc785c36",
+        oldSignature: "0x02f86e0180843b9aca0084b2d05e00826a4094f0109fc8df283027b6285cc889f5aa624eac1f55843b9aca0080c080a0d1290a118d51918c1ca17e3af0267c45efcd745cf42e78eabc444c424d6bcf37a003c81e1fda169575023a94200ee034128747f91020e704abaee30dbcfc785c36",
+        transactionHash: "0x82c19b39a6b7eaa0492863a8b236fad5018f267b4977c270ddd5228c4cbda60e",
+        messageHash: "0xe3beea0918f445c21eb2f42e3cbc3c5d54321ec642f47d12c473b2765df97f2b"
+    },
 ];
 
 describe("eth", function () {
diff --git a/test/formatters.inputTransactionFormatter.js b/test/formatters.inputTransactionFormatter.js
index 47c767e7c06..14e5ced9d15 100644
--- a/test/formatters.inputTransactionFormatter.js
+++ b/test/formatters.inputTransactionFormatter.js
@@ -1,5 +1,7 @@
+var bn = require('bn.js');
 var chai = require('chai');
 var assert = chai.assert;
+
 var formatters = require('../packages/web3-core-helpers/src/formatters.js');
 
 var tests = [{
@@ -98,6 +100,57 @@ var tests = [{
         gas: '0x3e8',
         gasPrice: '0x3e8'
     }
+}, {
+    input: {
+        data: '0x34234bf23bf4234',
+        value: '0x64',
+        from: '0x00c5496aee77c1ba1f0854206a26dda82a81d6d8',
+        gas: '0x3e8',
+        maxPriorityFeePerGas: '1000',
+        maxFeePerGas: '1000'
+    },
+    result: {
+        data: '0x34234bf23bf4234',
+        value: '0x64',
+        from: '0x00c5496aee77c1ba1f0854206a26dda82a81d6d8',
+        gas: '0x3e8',
+        maxPriorityFeePerGas: '0x3e8',
+        maxFeePerGas: '0x3e8'
+    }
+}, {
+    input: {
+        data: '0x34234bf23bf4234',
+        value: '0x64',
+        from: '0x00c5496aee77c1ba1f0854206a26dda82a81d6d8',
+        gas: '0x3e8',
+        maxPriorityFeePerGas: 1000,
+        maxFeePerGas: 1000
+    },
+    result: {
+        data: '0x34234bf23bf4234',
+        value: '0x64',
+        from: '0x00c5496aee77c1ba1f0854206a26dda82a81d6d8',
+        gas: '0x3e8',
+        maxPriorityFeePerGas: '0x3e8',
+        maxFeePerGas: '0x3e8'
+    }
+}, {
+    input: {
+        data: '0x34234bf23bf4234',
+        value: '0x64',
+        from: '0x00c5496aee77c1ba1f0854206a26dda82a81d6d8',
+        gas: '0x3e8',
+        maxPriorityFeePerGas: new bn(1000),
+        maxFeePerGas: new bn(1000)
+    },
+    result: {
+        data: '0x34234bf23bf4234',
+        value: '0x64',
+        from: '0x00c5496aee77c1ba1f0854206a26dda82a81d6d8',
+        gas: '0x3e8',
+        maxPriorityFeePerGas: '0x3e8',
+        maxFeePerGas: '0x3e8'
+    }
 }];
 
 describe('formatters', function () {