diff --git a/unionflow/unionflow-mobile-apps/lib/features/epargne/presentation/widgets/transfert_epargne_dialog.dart b/unionflow/unionflow-mobile-apps/lib/features/epargne/presentation/widgets/transfert_epargne_dialog.dart
index d862ee5..24e0ef3 100644
--- a/unionflow/unionflow-mobile-apps/lib/features/epargne/presentation/widgets/transfert_epargne_dialog.dart
+++ b/unionflow/unionflow-mobile-apps/lib/features/epargne/presentation/widgets/transfert_epargne_dialog.dart
@@ -1,6 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:get_it/get_it.dart';
 
+import '../../../../core/constants/lcb_ft_constants.dart';
+import '../../../../core/data/repositories/parametres_lcb_ft_repository.dart';
 import '../../data/models/compte_epargne_model.dart';
 import '../../data/models/transaction_epargne_request.dart';
 import '../../data/repositories/transaction_epargne_repository.dart';
@@ -27,9 +29,15 @@ class _TransfertEpargneDialogState extends State<TransfertEpargneDialog> {
   final _formKey = GlobalKey<FormState>();
   final _montantController = TextEditingController();
   final _motifController = TextEditingController();
+  final _origineFondsController = TextEditingController();
   bool _loading = false;
   String? _compteDestinationId;
   late TransactionEpargneRepository _repository;
+  late ParametresLcbFtRepository _parametresRepository;
+
+  /// Seuil LCB-FT récupéré depuis l'API (fallback à 500k XOF).
+  double _seuilLcbFt = kSeuilOrigineFondsObligatoireXOF;
+  bool _seuilLoaded = false;
 
   List<CompteEpargneModel> get _comptesDestination {
     if (widget.compteSource.id == null) return [];
@@ -38,17 +46,36 @@ class _TransfertEpargneDialogState extends State<TransfertEpargneDialog> {
         .toList();
   }
 
+  bool get _origineFondsRequis {
+    final m = double.tryParse(_montantController.text.replaceAll(',', '.'));
+    return m != null && m >= _seuilLcbFt;
+  }
+
   @override
   void initState() {
     super.initState();
     _repository = GetIt.I<TransactionEpargneRepository>();
+    _parametresRepository = GetIt.I<ParametresLcbFtRepository>();
     if (_comptesDestination.isNotEmpty) _compteDestinationId = _comptesDestination.first.id;
+    _chargerSeuil();
+  }
+
+  /// Charge le seuil LCB-FT depuis l'API au chargement du dialog.
+  Future<void> _chargerSeuil() async {
+    final seuil = await _parametresRepository.getSeuilJustification();
+    if (mounted) {
+      setState(() {
+        _seuilLcbFt = seuil.montantSeuil;
+        _seuilLoaded = true;
+      });
+    }
   }
 
   @override
   void dispose() {
     _montantController.dispose();
     _motifController.dispose();
+    _origineFondsController.dispose();
     super.dispose();
   }
 
@@ -72,6 +99,16 @@ class _TransfertEpargneDialogState extends State<TransfertEpargneDialog> {
       );
       return;
     }
+    if (_origineFondsRequis && _origineFondsController.text.trim().isEmpty) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: Text(
+            'L\'origine des fonds est obligatoire pour les opérations à partir de ${_seuilLcbFt.toStringAsFixed(0)} XOF (LCB-FT).',
+          ),
+        ),
+      );
+      return;
+    }
     setState(() => _loading = true);
     try {
       final request = TransactionEpargneRequest(
@@ -80,6 +117,7 @@ class _TransfertEpargneDialogState extends State<TransfertEpargneDialog> {
         montant: montant,
         compteDestinationId: _compteDestinationId,
         motif: _motifController.text.trim().isEmpty ? null : _motifController.text.trim(),
+        origineFonds: _origineFondsController.text.trim().isEmpty ? null : _origineFondsController.text.trim(),
       );
       await _repository.transferer(request);
       if (!mounted) return;
@@ -171,6 +209,7 @@ class _TransfertEpargneDialogState extends State<TransfertEpargneDialog> {
                   if (n > solde) return 'Solde insuffisant';
                   return null;
                 },
+                onChanged: (_) => setState(() {}),
               ),
               const SizedBox(height: 16),
               TextFormField(
@@ -181,6 +220,24 @@ class _TransfertEpargneDialogState extends State<TransfertEpargneDialog> {
                 ),
                 maxLines: 2,
               ),
+              const SizedBox(height: 16),
+              TextFormField(
+                controller: _origineFondsController,
+                decoration: InputDecoration(
+                  labelText: 'Origine des fonds (LCB-FT)',
+                  hintText: _origineFondsRequis ? 'Obligatoire au-dessus du seuil' : 'Optionnel',
+                  border: const OutlineInputBorder(),
+                ),
+                onChanged: (_) => setState(() {}),
+              ),
+              if (_origineFondsRequis)
+                Padding(
+                  padding: const EdgeInsets.only(top: 8),
+                  child: Text(
+                    'Requis pour les opérations ≥ ${_seuilLcbFt.toStringAsFixed(0)} XOF',
+                    style: TypographyTokens.bodySmall?.copyWith(color: ColorTokens.primary),
+                  ),
+                ),
             ],
           ),
         ),