diff --git a/gestion/lib/Db/Bdd.php b/gestion/lib/Db/Bdd.php
index 948ba33..27cb40a 100644
--- a/gestion/lib/Db/Bdd.php
+++ b/gestion/lib/Db/Bdd.php
@@ -5318,7 +5318,7 @@ COMMENTAIRES: ".$comment;
         $configuration = $this->getConfiguration(BddConstant::DEFAULT_ADMIN_ID_NEXTCLOUD);
         $configuration = json_decode($configuration);
         $currentConfig = $configuration[0];
-        $tvaValue = $currentConfig->tva_default;
+
         $isFactureSingleClient = $facture['fk_client_id'] != null
             && $facture['fk_client_id'] != 0;
 
@@ -5329,6 +5329,21 @@ COMMENTAIRES: ".$comment;
         $devis = $this->getDevisByFkFactureId($factureId);
         $factureGroupIsRelatedToAnyDevis = $devis != null;
 
+        // LOGIQUE TVA SIMPLIFIÉE
+        $tvaValue = 0;
+        $isTvaApplicable = false;
+
+        // Récupérer le statut TVA du client de cette facture
+        $clientId = $facture['fk_client_id'];
+        if ($clientId != null && $clientId != 0) {
+            $client = $this->getClientById($clientId);
+
+            // is_tva = 0 → Pas de TVA, is_tva = 1 → TVA par défaut
+            if (isset($client['is_tva']) && $client['is_tva'] == 1) {
+                $isTvaApplicable = true;
+                $tvaValue = (float)$currentConfig->tva_default;
+            }
+        }
 
         if($isFactureSingleClient) {
             $client = $this->getClientById($facture['fk_client_id']);
@@ -5337,6 +5352,7 @@ COMMENTAIRES: ".$comment;
             $facture['client_address'] = $client["client_address"];
             $facture['siret'] = $client["client_legal_one"];
             $facture['mail'] = $client["client_mail"];
+
             if (!$factureGroupIsRelatedToAnyDevis) {
                 $devisList = $this->getDevisDataByClientIdAndMonthYear(
                     $facture['fk_client_id'],
@@ -5344,7 +5360,6 @@ COMMENTAIRES: ".$comment;
                     $facture['year'],
                     $devisMentionFilters
                 );
-
             } else {
                 $devisList = $this->getDevisDataGroupByFactureId($factureId, $devisMentionFilters);
             }
@@ -5355,6 +5370,7 @@ COMMENTAIRES: ".$comment;
             $facture['client_address'] = $clientGroupFacturation["address"] . ' - ' .$clientGroupFacturation["postal_code"] . ' ' . $clientGroupFacturation['city'];
             $facture['siret'] = $clientGroupFacturation["siret_number"];
             $facture['mail'] = $clientGroupFacturation["email"];
+
             if (!$factureGroupIsRelatedToAnyDevis) {
                 $devisList = $this->getDevisDataByClientGroupFacturationIdAndMonthYear(
                     $facture['fk_client_group_facturation_id'],
@@ -5366,22 +5382,36 @@ COMMENTAIRES: ".$comment;
                 $devisList = $this->getDevisDataGroupByFactureId($factureId, $devisMentionFilters);
             }
         }
+
         $factureTotalHt = 0;
         $factureTotalTva = 0;
         $factureTotalTtc = 0;
+
         foreach($devisList as &$currentDevis) {
             $totalHt = 0;
             $totalTva = 0;
             $totalTtc = 0;
             $devisProducts = $this->getDevisProduits($currentDevis['devis_id']);
+
             foreach($devisProducts as $currentProduct) {
                 $valueHt = $currentProduct['produit_price'] * $currentProduct['quantite'];
-                $valueTtc = PriceHelpers::calculPriceWithVatValue($valueHt, $tvaValue);
+
+                // CALCUL SIMPLE : TVA OU PAS TVA
+                if ($isTvaApplicable) {
+                    // Client soumis à TVA : utiliser le taux par défaut
+                    $valueTtc = PriceHelpers::calculPriceWithVatValue($valueHt, $tvaValue);
+                    $tvaAmount = $valueTtc - $valueHt;
+                } else {
+                    // Client exonéré : TTC = HT
+                    $valueTtc = $valueHt;
+                    $tvaAmount = 0;
+                }
+
                 $totalHt += $valueHt;
                 $totalTtc += $valueTtc;
-                $tvaAmount = $valueTtc - $valueHt;
                 $totalTva += $tvaAmount;
             }
+
             $currentDevis["totalHt"] = $totalHt;
             $currentDevis["totalTtc"] = $totalTtc;
             $currentDevis["totalTva"] = $totalTva;
@@ -5390,10 +5420,19 @@ COMMENTAIRES: ".$comment;
             $factureTotalTva += $totalTva;
             $facture["devisList"][] = $currentDevis;
         }
+
         $facture["totalHt"] = $factureTotalHt;
         $facture["totalTtc"] = $factureTotalTtc;
         $facture["totalTva"] = $factureTotalTva;
         $facture["isFactureClientGroup"] = !$isFactureSingleClient;
+
+        // INFOS TVA POUR LE TEMPLATE
+        $facture["tvaInfo"] = [
+            'is_applicable' => $isTvaApplicable,
+            'rate' => $tvaValue,
+            'is_exempt' => !$isTvaApplicable
+        ];
+
         return $facture;
     }
 
diff --git a/gestion/templates/content/factureGroupDetails.php b/gestion/templates/content/factureGroupDetails.php
index a43b6b2..39699dd 100644
--- a/gestion/templates/content/factureGroupDetails.php
+++ b/gestion/templates/content/factureGroupDetails.php
@@ -2,16 +2,17 @@
 
 use OC\URLGenerator;
 use OCA\Gestion\Helpers\PriceHelpers;
+
 $facture = $_['facture'];
 $factureOrderNumber = $facture->facture_order_number == '' ? '-' : $facture->facture_order_number;
 $factureCaseNumber = $facture->facture_case_number == '' ? '-' : $facture->facture_case_number;
-$isFactureClientGroup = $facture->isFactureClientGroup; 
+$isFactureClientGroup = $facture->isFactureClientGroup;
 $currentConfig = json_decode($_['configuration'])[0];
 ?>
 <div class="bootstrap-iso">
     <div id="factureId" data-id="<?php echo $facture->id; ?>"></div>
     <div id="factureIdentifier" data-id="<?php echo $facture->id; ?>"></div>
-    <h2 class="mt-3 mb-3 text-center"> <?php echo ('Facture n° '.$facture->num); ?>
+    <h2 class="mt-3 mb-3 text-center"> <?php echo('Facture n° '.$facture->num); ?>
     </h2>
     <hr />
     <div class="row">
@@ -34,7 +35,7 @@ $currentConfig = json_decode($_['configuration'])[0];
             } else {
                 echo "<span style='font-size:12px' id='Company-logo' data-html2canvas-ignore><b><center>" . $l->t('You can add your company logo here.') . "</center></b><br/><i>" . $l->t('To add a logo, drop the logo.png file in ".gestion" folder at the root of your Nextcloud Files app. Remember to set "Show hidden files".') . "</i><br/><br/><center>" . $l->t('This message will not appear on generated PDF.') . "</center></span>";
             }
-            ?>
+?>
         </div>
         <div class="col-5 h-100 m-0" style="min-height:250px;">
             <h5 class="p-3 m-0 text-dark text-center border border-2 border-dark"><?php p($l->t('TO')); ?>
@@ -42,7 +43,7 @@ $currentConfig = json_decode($_['configuration'])[0];
             <p style="min-height:180px;"
                 class="p-3 m-0 h-100 text-center text-dark text-center border border-top-0 border-2 border-dark">
                 <span><?php echo $facture->group_name; ?></span><br />
-                <?php if($isFactureClientGroup == false){
+                <?php if($isFactureClientGroup == false) {
                     ?>
                     <span><?php echo $facture->client_name; ?></span><br />
                 <?php }?>
@@ -88,8 +89,8 @@ $currentConfig = json_decode($_['configuration'])[0];
             <tbody>
                 <?php
                 $devisList = $facture->devisList;
-                foreach ($devisList as $currentDevis) {
-                    ?>
+foreach ($devisList as $currentDevis) {
+    ?>
                     <tr>
                         <td><?php echo $currentDevis->devis_full_number; ?></td>
                         <td><?php echo $currentDevis->defunt_nom; ?></td>
@@ -113,26 +114,43 @@ $currentConfig = json_decode($_['configuration'])[0];
             class="mb-2 btn btn-outline-success sendmail"
         ><?php p($l->t('Send by email'));?></button>
     </div>
-    <div class="mt-0 table-responsive">
-        <table id="totalFactureGroupPrice" class="table table-striped table-xl">
-            <thead class="bg-dark text-white">
-                <tr>
-                    <th class="text-center"><?php p($l->t('Total without VAT')); ?></th>
-                    <th class="text-center"><?php p($l->t('VAT Rate')); ?></th>
-                    <th class="text-center"><?php p($l->t('Total VAT')); ?></th>
-                    <th class="text-center"><?php p($l->t('Total Price')); ?></th>
-                </tr>
-            </thead>
-            <tbody>
-                <tr>
-                    <td class="text-center"><?php echo (PriceHelpers::formatDecimalPrice($facture->totalHt).'€'); ?></td>
-                    <td class="text-center"><?php echo (PriceHelpers::formatDecimalPrice($currentConfig->tva_default).'€'); ?></td>
-                    <td class="text-center"><?php echo (PriceHelpers::formatDecimalPrice($facture->totalTva).'€'); ?></td>
-                    <td class="text-center"><?php echo (PriceHelpers::formatDecimalPrice($facture->totalTtc).'€'); ?></td>
-                </tr>
-            </tbody>
-        </table>
-    </div>
+<div class="mt-0 table-responsive">
+    <table id="totalFactureGroupPrice" class="table table-striped table-xl">
+        <thead class="bg-dark text-white">
+            <tr>
+                <th class="text-center"><?php p($l->t('Total without VAT')); ?></th>
+                <th class="text-center"><?php p($l->t('VAT Rate')); ?></th>
+                <th class="text-center"><?php p($l->t('Total VAT')); ?></th>
+                <th class="text-center"><?php p($l->t('Total Price')); ?></th>
+            </tr>
+        </thead>
+        <tbody>
+            <tr>
+                <td class="text-center"><?php echo PriceHelpers::formatDecimalPrice($facture->totalHt).'€'; ?></td>
+                <td class="text-center">
+                    <?php
+    // Affichage simple : Exonéré ou taux par défaut
+    if (isset($facture->tvaInfo) && $facture->tvaInfo->is_exempt) {
+        echo 'Exonéré';
+    } else {
+        echo PriceHelpers::formatDecimalPrice($facture->tvaInfo->rate).'%';
+    }
+?>
+                </td>
+                <td class="text-center">
+                    <?php
+if (isset($facture->tvaInfo) && $facture->tvaInfo->is_exempt) {
+    echo '0,00€';
+} else {
+    echo PriceHelpers::formatDecimalPrice($facture->totalTva).'€';
+}
+?>
+                </td>
+                <td class="text-center"><?php echo PriceHelpers::formatDecimalPrice($facture->totalTtc).'€'; ?></td>
+            </tr>
+        </tbody>
+    </table>
+</div>
     <div class="col m-0 pb-0 alert alert-info text-center">
         <p><span id="mentions_default"><?php p($l->t('Please set in global configuration')); ?></span></p>
     </div>