diff --git a/app/Features/InteractiveBrokers.php b/app/Features/InteractiveBrokers.php
new file mode 100644
index 00000000..fe27d967
--- /dev/null
+++ b/app/Features/InteractiveBrokers.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Features;
+
+use App\Models\User;
+
+/**
+ * @api
+ */
+class InteractiveBrokers
+{
+    /**
+     * Resolve the feature's initial value.
+     *
+     * Off by default; enable per beta tester with
+     * `php artisan feature:enable InteractiveBrokers user@example.com`
+     * until the Flex integration is validated against a live account.
+     */
+    public function resolve(?User $user): bool
+    {
+        return false;
+    }
+}
diff --git a/app/Http/Controllers/OpenBanking/ConnectionController.php b/app/Http/Controllers/OpenBanking/ConnectionController.php
index 02d1410d..25fb6d2b 100644
--- a/app/Http/Controllers/OpenBanking/ConnectionController.php
+++ b/app/Http/Controllers/OpenBanking/ConnectionController.php
@@ -16,6 +16,7 @@ use App\Services\Banking\BinanceClient;
 use App\Services\Banking\BitpandaClient;
 use App\Services\Banking\CoinbaseClient;
 use App\Services\Banking\IndexaCapitalClient;
+use App\Services\Banking\InteractiveBrokersClient;
 use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Support\Facades\Auth;
@@ -99,6 +100,7 @@ class ConnectionController extends Controller
             BankingProvider::Binance => ['api_token' => $validated['api_key'], 'api_secret' => $validated['api_secret']],
             BankingProvider::Bitpanda => ['api_token' => $validated['api_key']],
             BankingProvider::Coinbase => ['api_token' => $validated['api_key_name'], 'api_secret' => $validated['private_key']],
+            BankingProvider::InteractiveBrokers => ['api_token' => $validated['token'], 'api_secret' => $validated['query_id']],
             default => [],
         };
 
@@ -125,6 +127,7 @@ class ConnectionController extends Controller
                 BankingProvider::Binance => (new BinanceClient($validated['api_key'], $validated['api_secret']))->getAccount(),
                 BankingProvider::Bitpanda => (new BitpandaClient($validated['api_key']))->getCryptoWallets(),
                 BankingProvider::Coinbase => (new CoinbaseClient($validated['api_key_name'], $validated['private_key']))->getAccounts(limit: 1),
+                BankingProvider::InteractiveBrokers => (new InteractiveBrokersClient($validated['token'], $validated['query_id']))->fetchStatement(),
                 default => throw new \InvalidArgumentException('Unsupported provider for credential update.'),
             };
         } catch (\InvalidArgumentException $e) {
diff --git a/app/Http/Controllers/OpenBanking/InteractiveBrokersController.php b/app/Http/Controllers/OpenBanking/InteractiveBrokersController.php
new file mode 100644
index 00000000..8473730c
--- /dev/null
+++ b/app/Http/Controllers/OpenBanking/InteractiveBrokersController.php
@@ -0,0 +1,113 @@
+<?php
+
+namespace App\Http\Controllers\OpenBanking;
+
+use App\Enums\BankingConnectionStatus;
+use App\Enums\BankingProvider;
+use App\Features\InteractiveBrokers;
+use App\Http\Controllers\Controller;
+use App\Http\Controllers\OpenBanking\Concerns\CreatesAccountsFromPending;
+use App\Http\Controllers\OpenBanking\Concerns\HandlesSubscriptionGate;
+use App\Http\Requests\OpenBanking\ConnectInteractiveBrokersRequest;
+use App\Jobs\SyncBankingConnectionJob;
+use App\Models\Bank;
+use App\Services\AccountUserCurrencyService;
+use App\Services\Banking\InteractiveBrokersClient;
+use Illuminate\Http\JsonResponse;
+use Illuminate\Support\Facades\Log;
+use Laravel\Pennant\Feature;
+
+class InteractiveBrokersController extends Controller
+{
+    use CreatesAccountsFromPending;
+    use HandlesSubscriptionGate;
+
+    /**
+     * Validate the Flex credentials and create a connection.
+     */
+    public function store(ConnectInteractiveBrokersRequest $request, AccountUserCurrencyService $accountUserCurrencyService): JsonResponse
+    {
+        $validated = $request->validated();
+        $user = auth()->user();
+
+        abort_unless(Feature::for($user)->active(InteractiveBrokers::class), 403);
+
+        if ($this->shouldBlockOpenBankingAccess($user)) {
+            return $this->subscribeJsonResponse();
+        }
+
+        $client = new InteractiveBrokersClient($validated['token'], $validated['query_id']);
+
+        try {
+            $accounts = $client->fetchStatement();
+        } catch (\Throwable $e) {
+            Log::warning('Interactive Brokers connection validation failed', ['error' => $e->getMessage()]);
+
+            return response()->json([
+                'message' => 'Invalid Flex token or query ID, or failed to connect to Interactive Brokers.',
+            ], 422);
+        }
+
+        if (empty($accounts)) {
+            return response()->json([
+                'message' => 'No accounts found in the Flex statement. Check that your Flex Query includes the NAV section.',
+            ], 422);
+        }
+
+        $bank = Bank::firstOrCreate(
+            ['name' => 'Interactive Brokers', 'user_id' => null],
+            ['name' => 'Interactive Brokers', 'logo' => '/images/banks/logos/interactive-brokers.svg'],
+        );
+
+        $connection = $user->bankingConnections()->create([
+            'provider' => BankingProvider::InteractiveBrokers,
+            'api_token' => $validated['token'],
+            'api_secret' => $validated['query_id'],
+            'aspsp_name' => 'Interactive Brokers',
+            'aspsp_country' => 'US',
+            'aspsp_logo' => $bank->logo,
+            'status' => BankingConnectionStatus::Pending,
+        ]);
+
+        $connection->update([
+            'status' => BankingConnectionStatus::AwaitingMapping,
+            'pending_accounts_data' => $this->buildPendingAccounts($accounts),
+        ]);
+
+        if (! $user->isOnboarded()) {
+            $this->createAccountsFromPending($user, $connection, $accountUserCurrencyService);
+            SyncBankingConnectionJob::dispatch($connection);
+
+            return response()->json([
+                'redirect_url' => route('onboarding', ['step' => 'create-account']),
+                'connection_id' => $connection->id,
+            ]);
+        }
+
+        return response()->json([
+            'redirect_url' => route('open-banking.map-accounts', $connection),
+            'connection_id' => $connection->id,
+        ]);
+    }
+
+    /**
+     * Build pending accounts from the parsed Flex statement.
+     *
+     * @param  array<string, array{account_id: string, currency: string, navByDate: array<string, float>, investedAmount: float|null}>  $accounts
+     * @return array<int, array{uid: string, currency: string, name: string}>
+     */
+    private function buildPendingAccounts(array $accounts): array
+    {
+        $pending = [];
+
+        foreach ($accounts as $account) {
+            $pending[] = [
+                'uid' => $account['account_id'],
+                'currency' => $account['currency'] !== '' ? $account['currency'] : 'USD',
+                'name' => "Interactive Brokers ({$account['account_id']})",
+            ];
+        }
+
+        return $pending;
+    }
+}
diff --git a/app/Http/Middleware/HandleInertiaRequests.php b/app/Http/Middleware/HandleInertiaRequests.php
index f7edc8fe..6750e4d0 100644
--- a/app/Http/Middleware/HandleInertiaRequests.php
+++ b/app/Http/Middleware/HandleInertiaRequests.php
@@ -5,6 +5,7 @@ namespace App\Http\Middleware;
 use App\Enums\BankingConnectionStatus;
 use App\Enums\BankingProvider;
 use App\Features\CalculateBalancesOnImport;
+use App\Features\InteractiveBrokers;
 use App\Models\BankingConnection;
 use App\Services\CurrencyOptions;
 use Illuminate\Foundation\Inspiring;
@@ -178,16 +179,19 @@ class HandleInertiaRequests extends Middleware
             return [
                 'cashflow' => true,
                 'calculateBalancesOnImport' => false,
+                'interactiveBrokers' => false,
             ];
         }
 
         $features = Feature::for($user)->values([
             CalculateBalancesOnImport::class,
+            InteractiveBrokers::class,
         ]);
 
         return [
             'cashflow' => true,
             'calculateBalancesOnImport' => $features[CalculateBalancesOnImport::class] !== false,
+            'interactiveBrokers' => $features[InteractiveBrokers::class] !== false,
         ];
     }
 
diff --git a/app/Http/Requests/OpenBanking/ConnectInteractiveBrokersRequest.php b/app/Http/Requests/OpenBanking/ConnectInteractiveBrokersRequest.php
new file mode 100644
index 00000000..b471032e
--- /dev/null
+++ b/app/Http/Requests/OpenBanking/ConnectInteractiveBrokersRequest.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Http\Requests\OpenBanking;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class ConnectInteractiveBrokersRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * @return array<string, array<mixed>>
+     */
+    public function rules(): array
+    {
+        return [
+            'token' => ['required', 'string', 'min:10'],
+            'query_id' => ['required', 'string', 'min:3'],
+        ];
+    }
+}
diff --git a/app/Http/Requests/OpenBanking/UpdateConnectionCredentialsRequest.php b/app/Http/Requests/OpenBanking/UpdateConnectionCredentialsRequest.php
index 121a9e03..8e5627cf 100644
--- a/app/Http/Requests/OpenBanking/UpdateConnectionCredentialsRequest.php
+++ b/app/Http/Requests/OpenBanking/UpdateConnectionCredentialsRequest.php
@@ -38,6 +38,10 @@ class UpdateConnectionCredentialsRequest extends FormRequest
             BankingProvider::Bitpanda => [
                 'api_key' => ['required', 'string', 'min:10'],
             ],
+            BankingProvider::InteractiveBrokers => [
+                'token' => ['required', 'string', 'min:10'],
+                'query_id' => ['required', 'string', 'min:3'],
+            ],
             BankingProvider::Coinbase => [
                 'api_key_name' => ['required', 'string', 'regex:/^(organizations\/[a-z0-9-]+\/apiKeys\/[a-z0-9-]+|[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12})$/i'],
                 'private_key' => ['required', 'string', 'min:40'],
diff --git a/app/Models/BankingConnection.php b/app/Models/BankingConnection.php
index cb8051da..d390cd8b 100644
--- a/app/Models/BankingConnection.php
+++ b/app/Models/BankingConnection.php
@@ -129,6 +129,11 @@ class BankingConnection extends Model
         return $this->provider === BankingProvider::EnableBanking;
     }
 
+    public function isInteractiveBrokers(): bool
+    {
+        return $this->provider === BankingProvider::InteractiveBrokers;
+    }
+
     public function usesApiKey(): bool
     {
         return $this->provider->usesApiKey();
diff --git a/database/seeders/data/banks.json b/database/seeders/data/banks.json
index 4c6753a8..cb4bb302 100644
--- a/database/seeders/data/banks.json
+++ b/database/seeders/data/banks.json
@@ -9451,6 +9451,10 @@
         "name": "Indexa Capital",
         "logo": "/images/banks/logos/indexa-capital.jpg"
     },
+    {
+        "name": "Interactive Brokers",
+        "logo": "/images/banks/logos/interactive-brokers.svg"
+    },
     {
         "name": "Binance",
         "logo": "https://whisper.money/storage/banks/logos/t1h5rqi19dJTPl6ZadziPjNwm0lrcdTFBRzB3iCy.png"
diff --git a/public/images/banks/logos/interactive-brokers.svg b/public/images/banks/logos/interactive-brokers.svg
new file mode 100644
index 00000000..1509d521
--- /dev/null
+++ b/public/images/banks/logos/interactive-brokers.svg
@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" role="img" aria-label="Interactive Brokers">
+  <rect width="64" height="64" rx="12" fill="#D81222"/>
+  <text x="32" y="40" font-family="Arial, Helvetica, sans-serif" font-size="22" font-weight="700" fill="#ffffff" text-anchor="middle">IBKR</text>
+</svg>
diff --git a/resources/js/types/index.d.ts b/resources/js/types/index.d.ts
index 525a0033..96ed5d43 100644
--- a/resources/js/types/index.d.ts
+++ b/resources/js/types/index.d.ts
@@ -42,6 +42,7 @@ export interface NavDivider {
 export interface Features {
     cashflow: boolean;
     calculateBalancesOnImport: boolean;
+    interactiveBrokers: boolean;
 }
 
 export interface ExpiredBankingConnectionNotification {
diff --git a/routes/web.php b/routes/web.php
index ff21adac..f5aeee12 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -18,6 +18,7 @@ use App\Http\Controllers\OpenBanking\CoinbaseController;
 use App\Http\Controllers\OpenBanking\ConnectionAccountController;
 use App\Http\Controllers\OpenBanking\IndexaCapitalController;
 use App\Http\Controllers\OpenBanking\InstitutionController;
+use App\Http\Controllers\OpenBanking\InteractiveBrokersController;
 use App\Http\Controllers\OpenBanking\WiseController;
 use App\Http\Controllers\RealEstateDetailController;
 use App\Http\Controllers\ReEvaluateTransactionRulesController;
@@ -175,6 +176,8 @@ Route::middleware(['auth', 'verified'])->prefix('open-banking')->group(function
         ->name('open-banking.coinbase.connect');
     Route::post('wise/connect', [WiseController::class, 'store'])
         ->name('open-banking.wise.connect');
+    Route::post('interactive-brokers/connect', [InteractiveBrokersController::class, 'store'])
+        ->name('open-banking.interactive-brokers.connect');
 });
 
 Route::middleware(['auth', 'verified', 'onboarded', 'subscribed'])->group(function () {
diff --git a/tests/Feature/OpenBanking/InteractiveBrokersControllerTest.php b/tests/Feature/OpenBanking/InteractiveBrokersControllerTest.php
new file mode 100644
index 00000000..39d61233
--- /dev/null
+++ b/tests/Feature/OpenBanking/InteractiveBrokersControllerTest.php
@@ -0,0 +1,157 @@
+<?php
+
+use App\Enums\BankingConnectionStatus;
+use App\Features\InteractiveBrokers;
+use App\Jobs\SyncBankingConnectionJob;
+use App\Models\Bank;
+use App\Models\BankingConnection;
+use App\Models\User;
+use Illuminate\Support\Facades\Http;
+use Illuminate\Support\Facades\Queue;
+use Laravel\Pennant\Feature;
+
+beforeEach(function () {
+    Bank::factory()->create([
+        'name' => 'Interactive Brokers',
+        'user_id' => null,
+        'logo' => '/images/banks/logos/interactive-brokers.svg',
+    ]);
+});
+
+function ibFakeFlex(array $accountIds = ['U1234567']): void
+{
+    $statements = '';
+
+    foreach ($accountIds as $accountId) {
+        $statements .= '<FlexStatement accountId="'.$accountId.'">'
+            .'<AccountInformation accountId="'.$accountId.'" currency="USD" />'
+            .'<EquitySummaryInBase><EquitySummaryByReportDateInBase reportDate="20250115" cash="0" total="10000.00" /></EquitySummaryInBase>'
+            .'</FlexStatement>';
+    }
+
+    Http::fake([
+        '*SendRequest*' => Http::response('<FlexStatementResponse><Status>Success</Status><ReferenceCode>999</ReferenceCode></FlexStatementResponse>'),
+        '*GetStatement*' => Http::response('<FlexQueryResponse queryName="Whisper" type="AF"><FlexStatements count="1">'.$statements.'</FlexStatements></FlexQueryResponse>'),
+    ]);
+}
+
+function ibConnect(): array
+{
+    return ['token' => 'flex-token-1234567890', 'query_id' => '123456'];
+}
+
+test('is blocked when the feature flag is off', function () {
+    $user = User::factory()->onboarded()->create();
+
+    $this->actingAs($user)->postJson('/open-banking/interactive-brokers/connect', ibConnect())
+        ->assertForbidden();
+
+    $this->assertDatabaseMissing('banking_connections', [
+        'user_id' => $user->id,
+        'provider' => 'interactivebrokers',
+    ]);
+});
+
+test('users can connect with valid flex credentials', function () {
+    Queue::fake();
+
+    $user = User::factory()->onboarded()->create();
+    Feature::for($user)->activate(InteractiveBrokers::class);
+    ibFakeFlex();
+
+    $response = $this->actingAs($user)->postJson('/open-banking/interactive-brokers/connect', ibConnect());
+
+    $response->assertOk();
+    $response->assertJsonStructure(['redirect_url', 'connection_id']);
+
+    $connection = BankingConnection::where('user_id', $user->id)->where('provider', 'interactivebrokers')->first();
+
+    expect($connection->status)->toBe(BankingConnectionStatus::AwaitingMapping);
+    expect($connection->api_secret)->toBe('123456');
+    expect($connection->pending_accounts_data)->toHaveCount(1);
+    expect($connection->pending_accounts_data[0]['uid'])->toBe('U1234567');
+    expect($connection->pending_accounts_data[0]['name'])->toBe('Interactive Brokers (U1234567)');
+    expect($connection->pending_accounts_data[0]['currency'])->toBe('USD');
+
+    Queue::assertNothingPushed();
+});
+
+test('invalid flex credentials return 422', function () {
+    $user = User::factory()->onboarded()->create();
+    Feature::for($user)->activate(InteractiveBrokers::class);
+
+    Http::fake([
+        '*SendRequest*' => Http::response('<FlexStatementResponse><Status>Fail</Status><ErrorCode>1015</ErrorCode><ErrorMessage>Invalid token.</ErrorMessage></FlexStatementResponse>'),
+    ]);
+
+    $response = $this->actingAs($user)->postJson('/open-banking/interactive-brokers/connect', ibConnect());
+
+    $response->assertUnprocessable();
+
+    $this->assertDatabaseMissing('banking_connections', [
+        'user_id' => $user->id,
+        'provider' => 'interactivebrokers',
+    ]);
+});
+
+test('free tier users cannot connect after onboarding when subscriptions are enabled', function () {
+    config(['subscriptions.enabled' => true]);
+
+    $user = User::factory()->onboarded()->create();
+    Feature::for($user)->activate(InteractiveBrokers::class);
+
+    $response = $this->actingAs($user)->postJson('/open-banking/interactive-brokers/connect', ibConnect());
+
+    $response->assertStatus(402);
+    $response->assertJson(['redirect' => route('subscribe')]);
+});
+
+test('token and query_id are required', function () {
+    $user = User::factory()->onboarded()->create();
+    Feature::for($user)->activate(InteractiveBrokers::class);
+
+    $this->actingAs($user)->postJson('/open-banking/interactive-brokers/connect', [])
+        ->assertUnprocessable()
+        ->assertJsonValidationErrors(['token', 'query_id']);
+});
+
+test('auto-creates accounts during onboarding', function () {
+    config(['subscriptions.enabled' => true]);
+    Queue::fake();
+
+    $user = User::factory()->notOnboarded()->create();
+    Feature::for($user)->activate(InteractiveBrokers::class);
+    ibFakeFlex(['U1111111', 'U2222222']);
+
+    $response = $this->actingAs($user)->postJson('/open-banking/interactive-brokers/connect', ibConnect());
+
+    $response->assertOk();
+    $response->assertJsonPath('redirect_url', route('onboarding', ['step' => 'create-account']));
+
+    $connection = BankingConnection::where('user_id', $user->id)->where('provider', 'interactivebrokers')->first();
+
+    expect($connection->status)->toBe(BankingConnectionStatus::Active);
+    expect($connection->pending_accounts_data)->toBeNull();
+
+    $this->assertDatabaseHas('accounts', [
+        'user_id' => $user->id,
+        'banking_connection_id' => $connection->id,
+        'external_account_id' => 'U1111111',
+        'type' => 'investment',
+    ]);
+    $this->assertDatabaseHas('accounts', [
+        'user_id' => $user->id,
+        'banking_connection_id' => $connection->id,
+        'external_account_id' => 'U2222222',
+        'type' => 'investment',
+    ]);
+
+    Queue::assertPushed(SyncBankingConnectionJob::class);
+});
+
+test('requires authentication', function () {
+    $this->postJson('/open-banking/interactive-brokers/connect', [
+        'token' => 'flex-token-1234567890',
+        'query_id' => '123456',
+    ])->assertUnauthorized();
+});