diff --git a/resources/js/components/open-banking/connect-account-dialog.tsx b/resources/js/components/open-banking/connect-account-dialog.tsx
index d1734a3a..ed505170 100644
--- a/resources/js/components/open-banking/connect-account-dialog.tsx
+++ b/resources/js/components/open-banking/connect-account-dialog.tsx
@@ -16,7 +16,10 @@ import {
     SelectTrigger,
     SelectValue,
 } from '@/components/ui/select';
-import type { EnableBankingInstitution } from '@/types/banking';
+import type {
+    BankingConnection,
+    EnableBankingInstitution,
+} from '@/types/banking';
 import { __ } from '@/utils/i18n';
 import { useCallback, useEffect, useMemo, useState } from 'react';
 
@@ -65,6 +68,7 @@ const BITPANDA_INSTITUTION: EnableBankingInstitution = {
 interface ConnectAccountDialogProps {
     open: boolean;
     onOpenChange: (open: boolean) => void;
+    connections?: BankingConnection[];
 }
 
 type Step = 'country' | 'bank' | 'confirm';
@@ -81,6 +85,7 @@ function getCsrfToken(): string {
 export function ConnectAccountDialog({
     open,
     onOpenChange,
+    connections = [],
 }: ConnectAccountDialogProps) {
     const [step, setStep] = useState<Step>('country');
     const [country, setCountry] = useState<string>('');
@@ -171,6 +176,14 @@ export function ConnectAccountDialog({
 
             const data = await response.json();
 
+            const connectedEnableBankingNames = new Set(
+                connections
+                    .filter((c) => c.provider === 'enablebanking')
+                    .map((c) => c.aspsp_name),
+            );
+            const hasProvider = (provider: string) =>
+                connections.some((c) => c.provider === provider);
+
             const extraInstitutions = [
                 BINANCE_INSTITUTION,
                 BITPANDA_INSTITUTION,
@@ -179,9 +192,20 @@ export function ConnectAccountDialog({
                 extraInstitutions.push(INDEXA_CAPITAL_INSTITUTION);
             }
 
-            const allInstitutions = [...extraInstitutions, ...data].sort(
-                (a, b) => a.name.localeCompare(b.name),
-            );
+            const allInstitutions = [...extraInstitutions, ...data]
+                .filter((institution) => {
+                    if (institution.name === 'Binance') {
+                        return !hasProvider('binance');
+                    }
+                    if (institution.name === 'Bitpanda') {
+                        return !hasProvider('bitpanda');
+                    }
+                    if (institution.name === 'Indexa Capital') {
+                        return !hasProvider('indexacapital');
+                    }
+                    return !connectedEnableBankingNames.has(institution.name);
+                })
+                .sort((a, b) => a.name.localeCompare(b.name));
 
             setInstitutions(allInstitutions);
             setFilteredInstitutions(allInstitutions);
diff --git a/resources/js/components/open-banking/connect-account-inline.tsx b/resources/js/components/open-banking/connect-account-inline.tsx
index 97960e5d..8ec5d5a7 100644
--- a/resources/js/components/open-banking/connect-account-inline.tsx
+++ b/resources/js/components/open-banking/connect-account-inline.tsx
@@ -9,7 +9,10 @@ import {
     SelectTrigger,
     SelectValue,
 } from '@/components/ui/select';
-import type { EnableBankingInstitution } from '@/types/banking';
+import type {
+    BankingConnection,
+    EnableBankingInstitution,
+} from '@/types/banking';
 import { __ } from '@/utils/i18n';
 import { ArrowLeft } from 'lucide-react';
 import { useCallback, useEffect, useMemo, useState } from 'react';
@@ -70,9 +73,13 @@ function getCsrfToken(): string {
 
 interface ConnectAccountInlineProps {
     onBack: () => void;
+    connections?: BankingConnection[];
 }
 
-export function ConnectAccountInline({ onBack }: ConnectAccountInlineProps) {
+export function ConnectAccountInline({
+    onBack,
+    connections = [],
+}: ConnectAccountInlineProps) {
     const [step, setStep] = useState<Step>('country');
     const { trigger } = useWebHaptics();
     const [country, setCountry] = useState<string>('');
@@ -153,6 +160,14 @@ export function ConnectAccountInline({ onBack }: ConnectAccountInlineProps) {
 
             const data = await response.json();
 
+            const connectedEnableBankingNames = new Set(
+                connections
+                    .filter((c) => c.provider === 'enablebanking')
+                    .map((c) => c.aspsp_name),
+            );
+            const hasProvider = (provider: string) =>
+                connections.some((c) => c.provider === provider);
+
             const extraInstitutions = [
                 BINANCE_INSTITUTION,
                 BITPANDA_INSTITUTION,
@@ -161,9 +176,20 @@ export function ConnectAccountInline({ onBack }: ConnectAccountInlineProps) {
                 extraInstitutions.push(INDEXA_CAPITAL_INSTITUTION);
             }
 
-            const allInstitutions = [...extraInstitutions, ...data].sort(
-                (a, b) => a.name.localeCompare(b.name),
-            );
+            const allInstitutions = [...extraInstitutions, ...data]
+                .filter((institution) => {
+                    if (institution.name === 'Binance') {
+                        return !hasProvider('binance');
+                    }
+                    if (institution.name === 'Bitpanda') {
+                        return !hasProvider('bitpanda');
+                    }
+                    if (institution.name === 'Indexa Capital') {
+                        return !hasProvider('indexacapital');
+                    }
+                    return !connectedEnableBankingNames.has(institution.name);
+                })
+                .sort((a, b) => a.name.localeCompare(b.name));
 
             setInstitutions(allInstitutions);
             setFilteredInstitutions(allInstitutions);
diff --git a/resources/js/pages/settings/connections.tsx b/resources/js/pages/settings/connections.tsx
index 50aeee01..1cb17d91 100644
--- a/resources/js/pages/settings/connections.tsx
+++ b/resources/js/pages/settings/connections.tsx
@@ -351,6 +351,7 @@ export default function ConnectionsPage({ connections }: Props) {
                 <ConnectAccountDialog
                     open={connectDialogOpen}
                     onOpenChange={setConnectDialogOpen}
+                    connections={connections}
                 />
 
                 <UpgradeConnectionDialog
diff --git a/tests/Feature/OpenBanking/ConnectionControllerTest.php b/tests/Feature/OpenBanking/ConnectionControllerTest.php
index 02910076..83f2efac 100644
--- a/tests/Feature/OpenBanking/ConnectionControllerTest.php
+++ b/tests/Feature/OpenBanking/ConnectionControllerTest.php
@@ -397,3 +397,42 @@ test('credential update validates required fields for binance', function () {
 
     $response->assertSessionHasErrors('api_secret');
 });
+
+test('connections page includes provider and aspsp_name fields needed for frontend duplicate filtering', function () {
+    $user = User::factory()->onboarded()->create();
+    Feature::for($user)->activate('open-banking');
+
+    BankingConnection::factory()->create([
+        'user_id' => $user->id,
+        'provider' => 'enablebanking',
+        'aspsp_name' => 'CaixaBank',
+    ]);
+
+    $response = $this->actingAs($user)->get('/settings/connections');
+
+    $response->assertOk();
+    $response->assertInertia(fn ($page) => $page
+        ->has('connections', 1)
+        ->where('connections.0.provider', 'enablebanking')
+        ->where('connections.0.aspsp_name', 'CaixaBank')
+    );
+});
+
+test('connections page includes connections from all provider types for frontend filtering', function () {
+    $user = User::factory()->onboarded()->create();
+    Feature::for($user)->activate('open-banking');
+
+    BankingConnection::factory()->create(['user_id' => $user->id, 'provider' => 'enablebanking', 'aspsp_name' => 'CaixaBank']);
+    BankingConnection::factory()->binance()->create(['user_id' => $user->id]);
+    BankingConnection::factory()->bitpanda()->create(['user_id' => $user->id]);
+    BankingConnection::factory()->indexaCapital()->create(['user_id' => $user->id]);
+
+    $response = $this->actingAs($user)->get('/settings/connections');
+
+    $response->assertOk();
+    $response->assertInertia(fn ($page) => $page
+        ->has('connections', 4)
+        ->has('connections.0.provider')
+        ->has('connections.0.aspsp_name')
+    );
+});