diff --git a/src/features/payments/shared/hooks/useCrossChainTransfer.test.ts b/src/features/payments/shared/hooks/useCrossChainTransfer.test.ts
new file mode 100644
index 0000000000..a3b563496f
--- /dev/null
+++ b/src/features/payments/shared/hooks/useCrossChainTransfer.test.ts
@@ -0,0 +1,79 @@
+/**
+ * useCrossChainTransfer — calculate() error mapping.
+ *
+ * Rhino tags an unroutable pair `NoRouteFoundError`; the backend surfaces the
+ * tag verbatim inside the thrown message. The hook maps it to
+ * ROUTE_NOT_FOUND_ERROR so the Confirm view's existing special-case (Retry →
+ * onBack) sends the user back to fix the input. Any other failure passes
+ * through verbatim.
+ */
+import { act, renderHook } from '@testing-library/react'
+import { useCrossChainTransfer } from './useCrossChainTransfer'
+import { ROUTE_NOT_FOUND_ERROR } from '@/constants/general.consts'
+import { previewSdaTransfer } from '@/services/rhino-sda'
+
+jest.mock('@sentry/nextjs', () => ({ captureException: jest.fn() }))
+jest.mock('@/services/rhino-sda', () => ({
+    previewSdaTransfer: jest.fn(),
+    provisionSdaTransfer: jest.fn(),
+}))
+jest.mock('@/services/rhino-bridge', () => ({
+    getBridgeQuote: jest.fn(),
+    commitBridgeQuote: jest.fn(),
+    getBridgeStatus: jest.fn(),
+    isQuoteNearExpiry: jest.fn(() => false),
+}))
+jest.mock('@/utils/peanut-claim.utils', () => ({ prepareRequestLinkFulfillmentTransaction: jest.fn() }))
+jest.mock('@/app/actions/tokens', () => ({ estimateTransactionCostUsd: jest.fn() }))
+
+const mockPreview = previewSdaTransfer as jest.Mock
+
+// Cross-chain SDA input: Arbitrum USDC → Solana USDC. tokenSymbol is passed
+// explicitly so the test doesn't depend on token-details lookups.
+const CALC_INPUT = {
+    source: {
+        address: '0x1111111111111111111111111111111111111111' as `0x${string}`,
+        tokenAddress: '0xaf88d065e77c8cc2239327c5edb3a432268e5831' as `0x${string}`,
+        chainId: '42161',
+    },
+    destination: {
+        recipientAddress: 'EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v',
+        tokenAddress: 'EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v',
+        tokenAmount: '2',
+        tokenDecimals: 6,
+        tokenType: 1,
+        chainId: 'solana',
+        tokenSymbol: 'USDC',
+    },
+    context: 'withdraw' as const,
+    contextId: 'charge-uuid-1',
+}
+
+describe('useCrossChainTransfer calculate() error mapping', () => {
+    afterEach(() => jest.clearAllMocks())
+
+    test('NoRouteFoundError from the preview maps to ROUTE_NOT_FOUND_ERROR', async () => {
+        mockPreview.mockRejectedValue(
+            new Error('Failed to preview SDA transfer: 400 {"error":"Preview quote failed: NoRouteFoundError"}')
+        )
+        const { result } = renderHook(() => useCrossChainTransfer())
+
+        await act(() => result.current.calculate(CALC_INPUT))
+
+        expect(result.current.error).toBe(ROUTE_NOT_FOUND_ERROR)
+        expect(result.current.isFeeEstimationError).toBe(true)
+    })
+
+    test('any other failure passes through verbatim', async () => {
+        mockPreview.mockRejectedValue(
+            new Error('Failed to preview SDA transfer: 400 {"error":"Preview quote failed: HTTP 404 with empty body"}')
+        )
+        const { result } = renderHook(() => useCrossChainTransfer())
+
+        await act(() => result.current.calculate(CALC_INPUT))
+
+        expect(result.current.error).toBe(
+            'Failed to preview SDA transfer: 400 {"error":"Preview quote failed: HTTP 404 with empty body"}'
+        )
+    })
+})
diff --git a/src/features/payments/shared/hooks/useCrossChainTransfer.ts b/src/features/payments/shared/hooks/useCrossChainTransfer.ts
index e142eefc07..534d8e27e8 100644
--- a/src/features/payments/shared/hooks/useCrossChainTransfer.ts
+++ b/src/features/payments/shared/hooks/useCrossChainTransfer.ts
@@ -45,6 +45,7 @@ import {
     type BridgeStatusResponse,
 } from '@/services/rhino-bridge'
 import { chainIdToRhinoName } from '@/constants/rhino.consts'
+import { ROUTE_NOT_FOUND_ERROR } from '@/constants/general.consts'
 import { NON_EVM_WITHDRAW_CHAINS } from '@/constants/chainRegistry.consts'
 import { areEvmAddressesEqual, getTokenSymbol } from '@/utils/general.utils'
 
@@ -356,7 +357,12 @@ export function useCrossChainTransfer(): UseCrossChainTransferReturn {
                 })
                 setPath('sda')
             } catch (err) {
-                const message = err instanceof Error ? err.message : 'failed to calculate cross-chain transfer'
+                const raw = err instanceof Error ? err.message : 'failed to calculate cross-chain transfer'
+                // Rhino tags an unroutable pair NoRouteFoundError; the backend
+                // surfaces the tag verbatim. Map it to the copy the Confirm view
+                // already special-cases — its Retry button sends the user back to
+                // fix the input for this constant.
+                const message = raw.includes('NoRouteFoundError') ? ROUTE_NOT_FOUND_ERROR : raw
                 setError(message)
                 setIsFeeEstimationError(true)
                 captureException(err)