diff --git a/amplify/backend/function/fetchColonyBalances/src/index.js b/amplify/backend/function/fetchColonyBalances/src/index.js
index 09964cab604..bb2d557e401 100644
--- a/amplify/backend/function/fetchColonyBalances/src/index.js
+++ b/amplify/backend/function/fetchColonyBalances/src/index.js
@@ -128,7 +128,11 @@ exports.handler = async ({ source: { id: colonyAddress } }) => {
         };
       });
 
-      tokens.map(async ({ token }) => {
+      const mainChainTokens = tokens.filter(
+        (token) => token.token.chainMetadata.chainId === chainId,
+      );
+
+      mainChainTokens.map(async ({ token }) => {
         const { id: tokenAddress } = token;
 
         balances.push(async () => {
@@ -201,7 +205,11 @@ exports.handler = async ({ source: { id: colonyAddress } }) => {
           };
         });
 
-        tokens.map(async ({ token }) => {
+        const proxyChainTokens = tokens.filter(
+          (token) => token.token.chainMetadata.chainId === proxyChainId,
+        );
+
+        proxyChainTokens.map(async ({ token }) => {
           const { id: tokenAddress } = token;
 
           balances.push(async () => {
diff --git a/amplify/backend/function/fetchTokenFromChain/src/index.js b/amplify/backend/function/fetchTokenFromChain/src/index.js
index 332ac788f3e..69fbc6e77fc 100644
--- a/amplify/backend/function/fetchTokenFromChain/src/index.js
+++ b/amplify/backend/function/fetchTokenFromChain/src/index.js
@@ -32,6 +32,9 @@ const baseToken = {
   decimals: null,
   type: null,
   colonies: null,
+  chainMetadata: {
+    chainId: '',
+  },
 };
 
 const setEnvVariables = async (network) => {
diff --git a/src/components/v5/common/ActionSidebar/partials/AmountField/AmountField.tsx b/src/components/v5/common/ActionSidebar/partials/AmountField/AmountField.tsx
index 8b4ab996e5e..e0c68c2a48a 100644
--- a/src/components/v5/common/ActionSidebar/partials/AmountField/AmountField.tsx
+++ b/src/components/v5/common/ActionSidebar/partials/AmountField/AmountField.tsx
@@ -105,6 +105,7 @@ const AmountField: FC<AmountFieldProps> = ({
     if (selectedToken?.tokenAddress) {
       tokenAddressController.onChange(selectedToken.tokenAddress);
     }
+    // eslint-disable-next-line react-hooks/exhaustive-deps -- tokenAddressController deliberately omitted
   }, [selectedToken?.tokenAddress]);
 
   const handleTokenSelect = (selectedTokenAddress: string) => {
diff --git a/src/components/v5/common/ActionSidebar/partials/AmountField/hooks.ts b/src/components/v5/common/ActionSidebar/partials/AmountField/hooks.ts
index f45f7cb60ad..89b6799c50d 100644
--- a/src/components/v5/common/ActionSidebar/partials/AmountField/hooks.ts
+++ b/src/components/v5/common/ActionSidebar/partials/AmountField/hooks.ts
@@ -2,15 +2,19 @@ import { type FormatNumeralOptions } from 'cleave-zen';
 import { useMemo } from 'react';
 import { useFormContext } from 'react-hook-form';
 
+import { DEFAULT_NETWORK_INFO } from '~constants';
 import { useColonyContext } from '~context/ColonyContext/ColonyContext.ts';
 import { notNull } from '~utils/arrays/index.ts';
 import { getTokenDecimalsWithFallback } from '~utils/tokens.ts';
 import { CHAIN_FIELD_NAME } from '~v5/common/ActionSidebar/consts.ts';
 
 export const useAmountField = (selectedTokenAddress: string | undefined) => {
-  const { colony } = useColonyContext();
+  const {
+    colony,
+    colony: { nativeToken },
+  } = useColonyContext();
   const { watch } = useFormContext();
-  const chainId = watch(CHAIN_FIELD_NAME);
+  const chainId = watch(CHAIN_FIELD_NAME) ?? DEFAULT_NETWORK_INFO.chainId;
 
   const colonyTokens =
     colony.tokens?.items
@@ -21,7 +25,11 @@ export const useAmountField = (selectedTokenAddress: string | undefined) => {
   const selectedToken =
     colonyTokens.find(
       (token) => token?.tokenAddress === selectedTokenAddress,
-    ) || colonyTokens[0];
+    ) ||
+    colonyTokens.find(
+      (token) => token?.tokenAddress === nativeToken.tokenAddress,
+    ) ||
+    colonyTokens[0];
 
   const formattingOptions: FormatNumeralOptions = useMemo(
     () => ({
diff --git a/src/utils/validation/hasEnoughFundsValidation.ts b/src/utils/validation/hasEnoughFundsValidation.ts
index 5886a214c80..25876a9ac81 100644
--- a/src/utils/validation/hasEnoughFundsValidation.ts
+++ b/src/utils/validation/hasEnoughFundsValidation.ts
@@ -3,7 +3,6 @@ import { BigNumber } from 'ethers';
 import moveDecimal from 'move-decimal-point';
 import { type TestContext } from 'yup';
 
-import { DEFAULT_NETWORK_INFO } from '~constants';
 import { type Colony } from '~types/graphql.ts';
 import { notNull } from '~utils/arrays/index.ts';
 import {
@@ -35,20 +34,20 @@ export const hasEnoughFundsValidation = ({
     return false;
   }
   const { parent } = context;
-  const { tokenAddress: tokenAddressFieldValue, chainId } = parent || {};
+  const { tokenAddress: tokenAddressFieldValue, chain: chainId } = parent || {};
 
-  // @TODO hook this up with actual balances
-  if (chainId !== DEFAULT_NETWORK_INFO.chainId) {
-    return true;
-  }
   const colonyTokens =
     colony.tokens?.items
       .filter(notNull)
       .map((colonyToken) => colonyToken.token) || [];
 
   const selectedToken = colonyTokens.find(
-    ({ tokenAddress: selectedTokenAddress }) =>
-      selectedTokenAddress === tokenAddressFieldValue || tokenAddress,
+    ({
+      tokenAddress: selectedTokenAddress,
+      chainMetadata: { chainId: selectedChainId },
+    }) =>
+      (selectedTokenAddress === tokenAddressFieldValue || tokenAddress) &&
+      selectedChainId === chainId,
   );
 
   if (!selectedToken) {