diff --git a/packages/bridge-controller/CHANGELOG.md b/packages/bridge-controller/CHANGELOG.md
index 4c11bd7bfe..8d3d0fbb0b 100644
--- a/packages/bridge-controller/CHANGELOG.md
+++ b/packages/bridge-controller/CHANGELOG.md
@@ -7,6 +7,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Export `assetIdsMatch` util to compare assetIds. EVM assetIds are case insensitive ([#9831](https://github.com/MetaMask/core/pull/9831))
+
+### Fixed
+
+- Filter fees by `assetId` when coercing V1 quotes to V2 ([#9831](https://github.com/MetaMask/core/pull/9831))
+
 ## [79.1.0]
 
 ### Added
diff --git a/packages/bridge-controller/src/coercers/quote-response-v1-to-v2.ts b/packages/bridge-controller/src/coercers/quote-response-v1-to-v2.ts
index 7c2419a212..c6b9fea49b 100644
--- a/packages/bridge-controller/src/coercers/quote-response-v1-to-v2.ts
+++ b/packages/bridge-controller/src/coercers/quote-response-v1-to-v2.ts
@@ -1,7 +1,7 @@
 import { create, coerce, Infer, is, intersection } from '@metamask/superstruct';
 import { parseCaipAssetType } from '@metamask/utils';
-import { BigNumber } from 'bignumber.js';
 
+import { assetIdsMatch } from '../utils/assets.js';
 import { formatAddressToAssetId } from '../utils/caip-formatters.js';
 import { sumAmounts } from '../utils/number-formatters.js';
 import {
@@ -78,19 +78,19 @@ const QuoteV2FromV1 = coerce(QuoteSchemaV2, QuoteSchema, (value) => {
     ...restQuote
   } = value;
 
+  const srcAssetV2 = toBridgeAssetV2(srcAsset);
+
   return {
     src: {
-      amount: new BigNumber(srcTokenAmount)
-        .plus(
-          intent
-            ? 0
-            : (sumAmounts([
-                feeData[FeeType.TX_FEE],
-                feeData[FeeType.METABRIDGE],
-              ])?.amount ?? 0),
-        )
-        .toFixed(),
-      asset: toBridgeAssetV2(srcAsset),
+      amount: sumAmounts([
+        { amount: srcTokenAmount, asset: srcAssetV2 },
+        ...(intent
+          ? []
+          : [feeData[FeeType.TX_FEE], feeData[FeeType.METABRIDGE]].filter(
+              (fee) => assetIdsMatch(fee?.asset?.assetId, srcAssetV2.assetId),
+            )),
+      ])?.amount,
+      asset: srcAssetV2,
       ...(walletAddress && { walletAddress }),
     },
     dest: {
diff --git a/packages/bridge-controller/src/index.ts b/packages/bridge-controller/src/index.ts
index 943a079c05..e810382622 100644
--- a/packages/bridge-controller/src/index.ts
+++ b/packages/bridge-controller/src/index.ts
@@ -128,6 +128,7 @@ export { toQuoteMetadataV1 } from './utils/quote-metadata/to-quote-metadata-v1.j
 export { toQuoteMetadataV2 } from './utils/quote-metadata/to-quote-metadata-v2.js';
 
 export { sumAmounts } from './utils/number-formatters.js';
+export { assetIdsMatch } from './utils/assets.js';
 
 export {
   validateQuoteStreamComplete,
diff --git a/packages/bridge-controller/src/utils/assets.ts b/packages/bridge-controller/src/utils/assets.ts
index db540aa01e..d3d7f7e869 100644
--- a/packages/bridge-controller/src/utils/assets.ts
+++ b/packages/bridge-controller/src/utils/assets.ts
@@ -1,3 +1,4 @@
+import { KnownCaipNamespace, parseCaipAssetType } from '@metamask/utils';
 import type { CaipAssetType } from '@metamask/utils';
 
 import type { ExchangeRate, GenericQuoteRequest } from '../types.js';
@@ -39,3 +40,21 @@ export const toExchangeRates = (
   }, {});
   return exchangeRates;
 };
+
+export const assetIdsMatch = (
+  assetId1?: CaipAssetType,
+  assetId2?: CaipAssetType,
+): boolean => {
+  if (!assetId2 || !assetId1) {
+    return false;
+  }
+
+  return (
+    assetId1 === assetId2 ||
+    (parseCaipAssetType(assetId1).chain.namespace ===
+      KnownCaipNamespace.Eip155 &&
+      parseCaipAssetType(assetId2).chain.namespace ===
+        KnownCaipNamespace.Eip155 &&
+      assetId1.toLowerCase() === assetId2.toLowerCase())
+  );
+};
diff --git a/packages/bridge-controller/src/utils/number-formatters.ts b/packages/bridge-controller/src/utils/number-formatters.ts
index 9ce7439108..c18723df97 100644
--- a/packages/bridge-controller/src/utils/number-formatters.ts
+++ b/packages/bridge-controller/src/utils/number-formatters.ts
@@ -3,6 +3,7 @@ import { BigNumber } from 'bignumber.js';
 
 import type { DeepPartial } from '../types.js';
 import type { QuoteResponse } from '../validators/quote-response.js';
+import { assetIdsMatch } from './assets.js';
 
 /**
  * 1500000 -> 1.5
@@ -82,8 +83,11 @@ export const sumAmounts = (
   /**
    * Fees and prices can be denominated in different assets, so we need to check if all fees have the same units
    */
-  const isSameAssetForAllFees =
-    new Set(fees.map((fee) => fee.asset?.assetId?.toLowerCase())).size === 1;
+  const isSameAssetForAllFees = fees.reduce(
+    (acc, fee) =>
+      acc && assetIdsMatch(fee.asset?.assetId, fees[0]?.asset?.assetId),
+    true,
+  );
 
   /**
    * Keys that require the asset to be the same for all fees
diff --git a/packages/bridge-controller/src/utils/quote-metadata/calculators.ts b/packages/bridge-controller/src/utils/quote-metadata/calculators.ts
index d21cdafec3..d060e7afeb 100644
--- a/packages/bridge-controller/src/utils/quote-metadata/calculators.ts
+++ b/packages/bridge-controller/src/utils/quote-metadata/calculators.ts
@@ -20,6 +20,7 @@ import type { QuoteResponseV1 } from '../../validators/quote-response-v1.js';
 import { QuoteResponseSchemaV2 } from '../../validators/quote-response.js';
 import type { QuoteResponse } from '../../validators/quote-response.js';
 import type { TxData } from '../../validators/trade.js';
+import { assetIdsMatch } from '../assets.js';
 import { isEvmQuoteResponse, isNativeAddress } from '../bridge.js';
 import { calcNormalizedTokenAmount } from '../number-formatters.js';
 import type { QuoteMetadata, TokenAmountValues } from './types.js';
@@ -76,8 +77,7 @@ export const calcSentAmount = (
           .filter(
             (fee) =>
               fee?.amount &&
-              fee.asset?.assetId?.toLowerCase() ===
-                srcAsset.assetId?.toLowerCase(),
+              assetIdsMatch(fee.asset?.assetId, srcAsset.assetId),
           )
           .reduce(
             (acc, { amount }) => acc.plus(amount),
@@ -271,10 +271,12 @@ export const calcIncludedTxFees = (
     return undefined;
   }
   // Use exchange rate of the token that is being used to pay for the transaction
-  const { exchangeRate, usdExchangeRate } =
-    txFee?.asset.assetId === srcAsset.assetId
-      ? srcTokenExchangeRate
-      : destTokenExchangeRate;
+  const { exchangeRate, usdExchangeRate } = assetIdsMatch(
+    txFee?.asset?.assetId,
+    srcAsset.assetId,
+  )
+    ? srcTokenExchangeRate
+    : destTokenExchangeRate;
   const normalizedTxFeeAmount = calcNormalizedTokenAmount(
     txFee?.amount,
     txFee?.asset.decimals,
@@ -299,7 +301,7 @@ export const calcAdjustedReturn = (
   }: QuoteResponseV1['quote'],
 ) => {
   // If gas is included and is taken from the dest token, don't subtract network fee from return
-  if (txFee?.asset?.assetId?.toLowerCase() === destAssetId.toLowerCase()) {
+  if (assetIdsMatch(txFee?.asset?.assetId, destAssetId)) {
     return {
       valueInCurrency: toTokenAmount.valueInCurrency,
       usd: toTokenAmount.usd,