diff --git a/lib/app.dart b/lib/app.dart
index 6e8668e..c17e3eb 100644
--- a/lib/app.dart
+++ b/lib/app.dart
@@ -55,69 +55,82 @@ class _YnabAppState extends ConsumerState<YnabApp> {
       );
       return;
     }
-
     final payeeCtrl = TextEditingController();
     final amountCtrl = TextEditingController();
     int? accountId = accounts.first.id;
     DateTime date = DateTime.now();
+    bool isExpense = true;
 
     await showDialog(
       context: context,
-      builder: (ctx) => AlertDialog(
-        title: const Text('Nouvelle transaction'),
-        content: SingleChildScrollView(
-          child: Column(
-            mainAxisSize: MainAxisSize.min,
-            children: [
-              TextField(
-                controller: payeeCtrl,
-                decoration: const InputDecoration(labelText: 'Bénéficiaire', hintText: 'Ex: Supermarché'),
-                autofocus: true,
-              ),
-              const SizedBox(height: 12),
-              TextField(
-                controller: amountCtrl,
-                decoration: const InputDecoration(labelText: 'Montant', hintText: '0,00'),
-                keyboardType: const TextInputType.numberWithOptions(decimal: true),
-              ),
-              const SizedBox(height: 12),
-              DropdownButtonFormField<int>(
-                value: accountId,
-                decoration: const InputDecoration(labelText: 'Compte'),
-                items: accounts
-                    .map((a) => DropdownMenuItem(value: a.id, child: Text(a.name)))
-                    .toList(),
-                onChanged: (v) => accountId = v,
-              ),
-            ],
+      builder: (ctx) => StatefulBuilder(
+        builder: (context, setDialogState) => AlertDialog(
+          title: const Text('Nouvelle transaction'),
+          content: SingleChildScrollView(
+            child: Column(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                TextField(
+                  controller: payeeCtrl,
+                  decoration: const InputDecoration(labelText: 'Bénéficiaire', hintText: 'Ex: Supermarché'),
+                  autofocus: true,
+                ),
+                const SizedBox(height: 12),
+                TextField(
+                  controller: amountCtrl,
+                  decoration: const InputDecoration(labelText: 'Montant', hintText: '0,00'),
+                  keyboardType: const TextInputType.numberWithOptions(decimal: true),
+                ),
+                const SizedBox(height: 12),
+                SegmentedButton<bool>(
+                  segments: const [
+                    ButtonSegment(value: true, label: Text('Dépense'), icon: Icon(Icons.arrow_upward)),
+                    ButtonSegment(value: false, label: Text('Revenu'), icon: Icon(Icons.arrow_downward)),
+                  ],
+                  selected: {isExpense},
+                  onSelectionChanged: (v) => setDialogState(() => isExpense = v.first),
+                  style: ButtonStyle(
+                    visualDensity: VisualDensity.compact,
+                  ),
+                ),
+                const SizedBox(height: 12),
+                DropdownButtonFormField<int>(
+                  value: accountId,
+                  decoration: const InputDecoration(labelText: 'Compte'),
+                  items: accounts
+                      .map((a) => DropdownMenuItem(value: a.id, child: Text(a.name)))
+                      .toList(),
+                  onChanged: (v) => accountId = v,
+                ),
+              ],
+            ),
           ),
+          actions: [
+            FilledButton.tonal(
+              onPressed: () => Navigator.pop(ctx),
+              child: const Text('Annuler'),
+            ),
+            FilledButton(
+              onPressed: () async {
+                final payee = payeeCtrl.text.trim();
+                final amountStr = amountCtrl.text.trim().replaceAll(',', '.');
+                final raw = double.tryParse(amountStr);
+                if (payee.isEmpty || raw == null || accountId == null) return;
+                final amount = isExpense ? -raw.abs() : raw.abs();
+                await db.into(db.transactions).insert(TransactionsCompanion.insert(
+                  accountId: accountId!,
+                  payee: payee,
+                  amount: amount,
+                  date: date,
+                ));
+                if (ctx.mounted) Navigator.pop(ctx);
+              },
+              child: const Text('Ajouter'),
+            ),
+          ],
         ),
-        actions: [
-          FilledButton.tonal(
-            onPressed: () => Navigator.pop(ctx),
-            child: const Text('Annuler'),
-          ),
-          FilledButton(
-            onPressed: () async {
-              final payee = payeeCtrl.text.trim();
-              final amountStr = amountCtrl.text.trim().replaceAll(',', '.');
-              final amount = double.tryParse(amountStr);
-              if (payee.isEmpty || amount == null || accountId == null) return;
-              await db.into(db.transactions).insert(TransactionsCompanion.insert(
-                accountId: accountId!,
-                payee: payee,
-                amount: amount,
-                date: date,
-              ));
-              if (ctx.mounted) Navigator.pop(ctx);
-            },
-            child: const Text('Ajouter'),
-          ),
-        ],
       ),
     );
-    payeeCtrl.dispose();
-    amountCtrl.dispose();
   }
 
   void _toggleSearch() {