diff --git a/shared/constants/network.ts b/shared/constants/network.ts
index d9f0fb99e..18910c207 100644
--- a/shared/constants/network.ts
+++ b/shared/constants/network.ts
@@ -138,6 +138,8 @@ export const CHAIN_IDS = {
   BSC_TESTNET: '0x61',
   OPTIMISM: '0xa',
   OPTIMISM_TESTNET: '0x1a4',
+  BASE: '0x2105',
+  BASE_TESTNET: '0x14a33',
   POLYGON: '0x89',
   POLYGON_TESTNET: '0x13881',
   AVALANCHE: '0xa86a',
@@ -553,6 +555,8 @@ export const BUYABLE_CHAINS_MAP: {
     ChainId,
     | typeof CHAIN_IDS.LOCALHOST
     | typeof CHAIN_IDS.OPTIMISM_TESTNET
+    | typeof CHAIN_IDS.BASE_TESTNET
+    | typeof CHAIN_IDS.BASE
     | typeof CHAIN_IDS.BSC_TESTNET
     | typeof CHAIN_IDS.POLYGON_TESTNET
     | typeof CHAIN_IDS.AVALANCHE_TESTNET
diff --git a/ui/selectors/selectors.js b/ui/selectors/selectors.js
index 0f05d28b6..9b0632343 100644
--- a/ui/selectors/selectors.js
+++ b/ui/selectors/selectors.js
@@ -1307,11 +1307,22 @@ export function getIsOptimism(state) {
   );
 }
 
+export function getIsBase(state) {
+  return (
+    getCurrentChainId(state) === CHAIN_IDS.BASE ||
+    getCurrentChainId(state) === CHAIN_IDS.BASE_TESTNET
+  );
+}
+
+export function getIsOpStack(state) {
+  return getIsOptimism(state) || getIsBase(state);
+}
+
 export function getIsMultiLayerFeeNetwork(state) {
-  return getIsOptimism(state);
+  return getIsOpStack(state);
 }
 /**
- *  To retrieve the maxBaseFee and priotitFee teh user has set as default
+ *  To retrieve the maxBaseFee and priorityFee the user has set as default
  *
  * @param {*} state
  * @returns Boolean