diff --git a/apps/swap-service/src/swaps/__tests__/utils.test.ts b/apps/swap-service/src/swaps/__tests__/utils.test.ts
index 1fa17a6..9d0d7c9 100644
--- a/apps/swap-service/src/swaps/__tests__/utils.test.ts
+++ b/apps/swap-service/src/swaps/__tests__/utils.test.ts
@@ -10,6 +10,7 @@ import { calculateFeeForSwap } from '../utils'
 const makeSwap = (overrides: Partial<Swap> = {}): Swap =>
   ({
     swapId: 'test-swap',
+    isAffiliateVerified: true,
     sellAsset: { assetId: 'eip155:1/slip44:60', precision: 18 },
     buyAsset: { assetId: 'eip155:1/erc20:0xusdc', precision: 6 },
     sellAssetUsd: '2000',
@@ -30,6 +31,14 @@ const makeSwap = (overrides: Partial<Swap> = {}): Swap =>
 describe('calculateFeeForSwap volume reconstruction', () => {
   afterEach(() => jest.restoreAllMocks())
 
+  it('returns null without warning for a swap that is not affiliate-verified', () => {
+    const warn = jest.spyOn(Logger.prototype, 'warn').mockImplementation(() => undefined)
+
+    // e.g. a failed / unverified swap surfaced by the partner swaps listing
+    expect(calculateFeeForSwap(makeSwap({ isAffiliateVerified: false, affiliateVerificationDetails: null }))).toBeNull()
+    expect(warn).not.toHaveBeenCalled()
+  })
+
   it('uses the sell-side USD as volume for a 0-bps swap when the sell price is present', () => {
     const result = calculateFeeForSwap(makeSwap())
 
diff --git a/apps/swap-service/src/swaps/swaps.service.ts b/apps/swap-service/src/swaps/swaps.service.ts
index 79358fc..24c3ac4 100644
--- a/apps/swap-service/src/swaps/swaps.service.ts
+++ b/apps/swap-service/src/swaps/swaps.service.ts
@@ -399,7 +399,11 @@ export class SwapsService {
       return toSwap(
         await this.prisma.swap.update({
           where: { swapId: swap.swapId },
-          data: { verificationStatus: 'FAILED', isAffiliateVerified: false },
+          data: {
+            verificationStatus: 'FAILED',
+            isAffiliateVerified: false,
+            affiliateVerificationDetails: Prisma.DbNull,
+          },
         }),
       )
     }
diff --git a/apps/swap-service/src/swaps/utils.ts b/apps/swap-service/src/swaps/utils.ts
index f23361b..77be2d0 100644
--- a/apps/swap-service/src/swaps/utils.ts
+++ b/apps/swap-service/src/swaps/utils.ts
@@ -168,6 +168,8 @@ export const calculateFeeForSwap = (
   actualFeeUsd: number | null
   impliedFeeUsd: number | null
 } | null => {
+  if (!swap.isAffiliateVerified) return null
+
   const verifiedBps = swap.affiliateVerificationDetails?.affiliateBps
   if (verifiedBps === undefined) {
     logger.warn(`Verified swap ${swap.swapId} missing affiliate bps in verification details, skipping`)