diff --git a/api/swap/_utils.ts b/api/swap/_utils.ts
index 25e8a91b3..7a762feca 100644
--- a/api/swap/_utils.ts
+++ b/api/swap/_utils.ts
@@ -114,11 +114,7 @@ export async function handleBaseSwapQueryParams(
 
   const refundToken = refundOnOrigin ? inputToken : outputToken;
 
-  // 3. Calculate fees based for full route
-  const fees = await calculateCrossSwapFees(crossSwapQuotes);
-
   return {
-    fees,
     inputToken,
     outputToken,
     amount,
@@ -295,6 +291,7 @@ export function buildBaseSwapResponseJson(params: {
     gasPrice: BigNumber;
   };
   permitSwapTx?: AuthTxPayload | PermitTxPayload;
+  fees: CrossSwapFees;
 }) {
   return stringifyBigNumProps({
     checks: {
@@ -328,6 +325,7 @@ export function buildBaseSwapResponseJson(params: {
             outputAmount: params.originSwapQuote.expectedAmountOut,
             minOutputAmount: params.originSwapQuote.minAmountOut,
             maxInputAmount: params.originSwapQuote.maximumAmountIn,
+            fees: params.fees.originSwapFees,
           }
         : undefined,
       bridge: {
@@ -335,6 +333,7 @@ export function buildBaseSwapResponseJson(params: {
         outputAmount: params.bridgeQuote.outputAmount,
         tokenIn: params.bridgeQuote.inputToken,
         tokenOut: params.bridgeQuote.outputToken,
+        fees: params.fees.bridgeFees,
       },
       destinationSwap: params.destinationSwapQuote
         ? {
@@ -344,6 +343,7 @@ export function buildBaseSwapResponseJson(params: {
             maxInputAmount: params.destinationSwapQuote.maximumAmountIn,
             outputAmount: params.destinationSwapQuote.expectedAmountOut,
             minOutputAmount: params.destinationSwapQuote.minAmountOut,
+            fees: params.fees.destinationSwapFees,
           }
         : undefined,
     },
diff --git a/api/swap/approval/index.ts b/api/swap/approval/index.ts
index 44f87c9d6..3007b7e12 100644
--- a/api/swap/approval/index.ts
+++ b/api/swap/approval/index.ts
@@ -15,6 +15,7 @@ import {
   BaseSwapQueryParams,
   getApprovalTxns,
   buildBaseSwapResponseJson,
+  calculateCrossSwapFees,
 } from "../_utils";
 import { getBalanceAndAllowance } from "../../_erc20";
 import { getCrossSwapQuotes } from "../../_dexes/cross-swap-service";
@@ -77,10 +78,10 @@ const handler = async (
       quoteFetchStrategies
     );
 
-    const crossSwapTx = await buildCrossSwapTxForAllowanceHolder(
-      crossSwapQuotes,
-      integratorId
-    );
+    const [crossSwapTx, fees] = await Promise.all([
+      buildCrossSwapTxForAllowanceHolder(crossSwapQuotes, integratorId),
+      calculateCrossSwapFees(crossSwapQuotes),
+    ]);
 
     const { originSwapQuote, bridgeQuote, destinationSwapQuote, crossSwap } =
       crossSwapQuotes;
@@ -140,6 +141,7 @@ const handler = async (
       originChainId,
       inputTokenAddress,
       inputAmount,
+      fees,
       approvalSwapTx: {
         ...crossSwapTx,
         gas: originTxGas,
diff --git a/api/swap/auth/index.ts b/api/swap/auth/index.ts
index 8af00b28b..87e1e440d 100644
--- a/api/swap/auth/index.ts
+++ b/api/swap/auth/index.ts
@@ -9,6 +9,7 @@ import {
   handleBaseSwapQueryParams,
   BaseSwapQueryParams,
   buildBaseSwapResponseJson,
+  calculateCrossSwapFees,
 } from "../_utils";
 import { getSwapRouter02Strategy } from "../../_dexes/uniswap/swap-router-02";
 import { InvalidParamError } from "../../_errors";
@@ -109,11 +110,14 @@ const handler = async (
       },
     });
 
-    const balance = await getBalance({
-      chainId: inputToken.chainId,
-      tokenAddress: inputToken.address,
-      owner: crossSwapQuotes.crossSwap.depositor,
-    });
+    const [balance, fees] = await Promise.all([
+      getBalance({
+        chainId: inputToken.chainId,
+        tokenAddress: inputToken.address,
+        owner: crossSwapQuotes.crossSwap.depositor,
+      }),
+      calculateCrossSwapFees(crossSwapQuotes),
+    ]);
 
     const responseJson = buildBaseSwapResponseJson({
       inputTokenAddress: inputToken.address,
@@ -127,6 +131,7 @@ const handler = async (
       balance,
       // Allowance does not matter for auth-based flows
       allowance: BigNumber.from(0),
+      fees,
     });
 
     logger.debug({
diff --git a/api/swap/permit/index.ts b/api/swap/permit/index.ts
index cdf04ece7..57ebbf962 100644
--- a/api/swap/permit/index.ts
+++ b/api/swap/permit/index.ts
@@ -9,6 +9,7 @@ import {
   handleBaseSwapQueryParams,
   BaseSwapQueryParams,
   buildBaseSwapResponseJson,
+  calculateCrossSwapFees,
 } from "../_utils";
 import { getSwapRouter02Strategy } from "../../_dexes/uniswap/swap-router-02";
 import { InvalidParamError } from "../../_errors";
@@ -92,6 +93,7 @@ const handler = async (
       },
       quoteFetchStrategies
     );
+
     // Build tx for permit
     const crossSwapTxForPermit = await buildPermitTxPayload({
       crossSwapQuotes,
@@ -103,11 +105,14 @@ const handler = async (
       },
     });
 
-    const balance = await getBalance({
-      chainId: inputToken.chainId,
-      tokenAddress: inputToken.address,
-      owner: crossSwapQuotes.crossSwap.depositor,
-    });
+    const [balance, fees] = await Promise.all([
+      getBalance({
+        chainId: inputToken.chainId,
+        tokenAddress: inputToken.address,
+        owner: crossSwapQuotes.crossSwap.depositor,
+      }),
+      calculateCrossSwapFees(crossSwapQuotes),
+    ]);
 
     const responseJson = buildBaseSwapResponseJson({
       inputTokenAddress: inputToken.address,
@@ -121,6 +126,7 @@ const handler = async (
       balance,
       // Allowance does not matter for permit-based flows
       allowance: BigNumber.from(0),
+      fees,
     });
 
     logger.debug({