diff --git a/src/setL2BaseFee.ts b/src/setL2BaseFee.ts
new file mode 100644
index 00000000..1f9a32b2
--- /dev/null
+++ b/src/setL2BaseFee.ts
@@ -0,0 +1,119 @@
+import { PublicClient, WalletClient } from 'viem';
+import { getContract } from 'viem';
+import { validateParentChain } from './types/ParentChain';
+import L1AtomicTokenBridgeCreator from '@arbitrum/token-bridge-contracts/build/contracts/contracts/tokenbridge/ethereum/L1AtomicTokenBridgeCreator.sol/L1AtomicTokenBridgeCreator.json';
+import { Interface } from 'ethers/lib/utils';
+import { upgradeExecutor } from './contracts';
+import { getAddress } from 'viem';
+import {
+  setL2BaseFeeEnocdeFunctionData,
+  setMinimumL2BaseFeeEnocdeFunctionData,
+} from './setL2BaseFeeEncodeFunctionData';
+
+export type BaseFeeParams = {
+  parentChainClient: PublicClient;
+  orbitChainClient: PublicClient;
+  orbitChainWalletClient: WalletClient;
+  tokenBridgeCreatorAddress: `0x${string}`;
+  inboxAddress: `0x${string}`;
+};
+
+export type SetL2BaseFeeParams = {
+  l2BaseFee: string;
+};
+
+export type SetMinimumL2BaseFeeParams = {
+  minimumL2BaseFee: string;
+};
+
+const arbOwner = '0x0000000000000000000000000000000000000070';
+
+export async function setL2BaseFee({
+  parentChainClient,
+  orbitChainClient,
+  orbitChainWalletClient,
+  tokenBridgeCreatorAddress,
+  inboxAddress,
+  l2BaseFee,
+}: BaseFeeParams & SetL2BaseFeeParams) {
+  validateParentChain(parentChainClient);
+  const account = orbitChainWalletClient.account?.address;
+
+  if (typeof account === 'undefined') {
+    throw new Error('account is undefined');
+  }
+
+  const upgradeExecutorProxyAddress = await getUpgradeExecutorProxyAddress(
+    tokenBridgeCreatorAddress,
+    inboxAddress,
+    orbitChainClient,
+  );
+
+  const { request } = await orbitChainClient.simulateContract({
+    address: getAddress(upgradeExecutorProxyAddress),
+    abi: upgradeExecutor.abi,
+    functionName: 'executeCall',
+    args: [
+      arbOwner, // target
+      setL2BaseFeeEnocdeFunctionData(BigInt(l2BaseFee)), // targetCallData
+    ],
+    account,
+  });
+
+  const hash = await orbitChainWalletClient.writeContract(request);
+  const txReceipt = await orbitChainClient.waitForTransactionReceipt({ hash });
+
+  return txReceipt;
+}
+
+export async function setMinimumL2BaseFee({
+  parentChainClient,
+  orbitChainClient,
+  orbitChainWalletClient,
+  tokenBridgeCreatorAddress,
+  inboxAddress,
+  minimumL2BaseFee,
+}: BaseFeeParams & SetMinimumL2BaseFeeParams) {
+  validateParentChain(parentChainClient);
+  const account = orbitChainWalletClient.account?.address;
+
+  if (typeof account === 'undefined') {
+    throw new Error('account is undefined');
+  }
+
+  const upgradeExecutorProxyAddress = await getUpgradeExecutorProxyAddress(
+    tokenBridgeCreatorAddress,
+    inboxAddress,
+    orbitChainClient,
+  );
+
+  const { request } = await orbitChainClient.simulateContract({
+    address: getAddress(upgradeExecutorProxyAddress),
+    abi: upgradeExecutor.abi,
+    functionName: 'executeCall',
+    args: [
+      arbOwner, // target
+      setMinimumL2BaseFeeEnocdeFunctionData(BigInt(minimumL2BaseFee)), // targetCallData
+    ],
+    account,
+  });
+
+  const hash = await orbitChainWalletClient.writeContract(request);
+  const txReceipt = await orbitChainClient.waitForTransactionReceipt({ hash });
+
+  return txReceipt;
+}
+
+async function getUpgradeExecutorProxyAddress(
+  tokenBridgeCreatorAddress: `0x${string}`,
+  inboxAddress: `0x${string}`,
+  publicClient: PublicClient,
+): Promise<`0x${string}`> {
+  const tokenBridgeCreator = getContract({
+    address: tokenBridgeCreatorAddress,
+    abi: L1AtomicTokenBridgeCreator.abi,
+    publicClient: publicClient,
+  });
+  const deployment: any = await tokenBridgeCreator.read.inboxToL2Deployment([inboxAddress]);
+  return deployment.upgradeExecutor as `0x${string}`;
+}
diff --git a/src/setL2BaseFeeEncodeFunctionData.ts b/src/setL2BaseFeeEncodeFunctionData.ts
new file mode 100644
index 00000000..780f3bd4
--- /dev/null
+++ b/src/setL2BaseFeeEncodeFunctionData.ts
@@ -0,0 +1,17 @@
+import { encodeFunctionData, parseAbi } from 'viem';
+
+export function setL2BaseFeeEnocdeFunctionData(priceInWei: bigint) {
+  return encodeFunctionData({
+    abi: parseAbi(['function setL2BaseFee(uint256 priceInWei)']),
+    functionName: 'setL2BaseFee',
+    args: [priceInWei],
+  });
+}
+
+export function setMinimumL2BaseFeeEnocdeFunctionData(priceInWei: bigint) {
+  return encodeFunctionData({
+    abi: parseAbi(['function setMinimumL2BaseFee(uint256 priceInWei)']),
+    functionName: 'setMinimumL2BaseFee',
+    args: [priceInWei],
+  });
+}