diff --git a/declarationtva_view.php b/declarationtva_view.php
index 5b4eb2b..e44578a 100644
--- a/declarationtva_view.php
+++ b/declarationtva_view.php
@@ -446,7 +446,7 @@ if ($declarationtva->status == 'draft') {
     // Validation button with confirmation dialog
     print '<a href="#" onclick="confirmValidation(' . $id . '); return false;" class="butAction">' . $langs->trans("Validate") . '</a> ';
 } elseif ($declarationtva->status == 'validated') {
-    print '<a href="' . $_SERVER['PHP_SELF'] . '?id=' . $id . '&action=submit" class="butAction">' . $langs->trans("Submit") . '</a> ';
+    print '<a href="#" onclick="confirmSubmission(' . $id . '); return false;" class="butAction">' . $langs->trans("Submit") . '</a> ';
     // Add unvalidate button for testing
     print '<a href="#" onclick="confirmUnvalidation(' . $id . '); return false;" class="butAction" style="background-color: #dc3545;">' . $langs->trans("Unvalidate") . '</a> ';
 }
@@ -621,6 +621,62 @@ function proceedValidation(declarationId) {
     window.location.href = "' . $_SERVER['PHP_SELF'] . '?id=" + declarationId + "&action=validate&token=' . newToken() . '";
 }
 
+function confirmSubmission(declarationId) {
+    // Create a proper Dolibarr-style modal dialog for submission
+    var dialog = document.createElement("div");
+    dialog.id = "submissionModal";
+    dialog.style.cssText = "position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); z-index: 10000; display: flex; align-items: center; justify-content: center; font-family: Arial, sans-serif;";
+    
+    var dialogContent = document.createElement("div");
+    dialogContent.style.cssText = "background: white; border-radius: 8px; box-shadow: 0 10px 30px rgba(0,0,0,0.3); max-width: 500px; width: 90%; max-height: 90%; overflow: hidden;";
+    
+    // Header
+    var header = document.createElement("div");
+    header.style.cssText = "background: #f8f9fa; padding: 20px; border-bottom: 1px solid #dee2e6; display: flex; align-items: center;";
+    header.innerHTML = `
+        <div style="flex: 1;">
+            <h3 style="margin: 0; color: #495057; font-size: 18px; font-weight: 600;">' . $langs->trans("ConfirmSubmission") . '</h3>
+        </div>
+        <button onclick="closeSubmissionModal()" style="background: none; border: none; font-size: 24px; color: #6c757d; cursor: pointer; padding: 0; width: 30px; height: 30px; display: flex; align-items: center; justify-content: center;">&times;</button>
+    `;
+    
+    // Body
+    var body = document.createElement("div");
+    body.style.cssText = "padding: 20px;";
+    body.innerHTML = `
+        <p style="margin: 0 0 15px 0; color: #495057; line-height: 1.5;">' . $langs->trans("ConfirmSubmissionMessage") . '</p>
+        <div style="background: #fff3cd; border: 1px solid #ffeaa7; border-radius: 4px; padding: 12px; margin: 15px 0;">
+            <p style="margin: 0; color: #856404; font-size: 14px;"><strong>' . $langs->trans("SubmissionWarning") . '</strong></p>
+        </div>
+    `;
+    
+    // Footer
+    var footer = document.createElement("div");
+    footer.style.cssText = "background: #f8f9fa; padding: 15px 20px; border-top: 1px solid #dee2e6; display: flex; justify-content: flex-end; gap: 10px;";
+    footer.innerHTML = `
+        <button onclick="closeSubmissionModal()" style="background: #6c757d; color: white; border: none; padding: 8px 16px; border-radius: 4px; cursor: pointer; font-size: 14px;">' . $langs->trans("Cancel") . '</button>
+        <button onclick="proceedSubmission(' . $id . ')" style="background: #28a745; color: white; border: none; padding: 8px 16px; border-radius: 4px; cursor: pointer; font-size: 14px;">' . $langs->trans("ConfirmSubmission") . '</button>
+    `;
+    
+    dialogContent.appendChild(header);
+    dialogContent.appendChild(body);
+    dialogContent.appendChild(footer);
+    dialog.appendChild(dialogContent);
+    document.body.appendChild(dialog);
+}
+
+function closeSubmissionModal() {
+    var modal = document.getElementById("submissionModal");
+    if (modal) {
+        modal.remove();
+    }
+}
+
+function proceedSubmission(declarationId) {
+    // Redirect to submission action
+    window.location.href = "' . $_SERVER['PHP_SELF'] . '?id=" + declarationId + "&action=submit&token=' . newToken() . '";
+}
+
 function confirmUnvalidation(declarationId) {
     // Create a proper Dolibarr-style modal dialog for unvalidation
     var dialog = document.createElement("div");
diff --git a/langs/fr_FR/declarationtva.lang b/langs/fr_FR/declarationtva.lang
index 77ea8ed..cadeb98 100644
--- a/langs/fr_FR/declarationtva.lang
+++ b/langs/fr_FR/declarationtva.lang
@@ -539,3 +539,6 @@ VATRefundThresholdConfigurationUpdateFailed = Erreur lors de la mise à jour de
 DeclarationSubmitted = Déclaration soumise avec succès
 ErrorSubmittingDeclaration = Erreur lors de la soumission de la déclaration
 Submit = Soumettre
+ConfirmSubmission = Confirmer la soumission
+ConfirmSubmissionMessage = Êtes-vous sûr de vouloir soumettre cette déclaration ? Cette action créera les écritures comptables et marquera la déclaration comme soumise.
+SubmissionWarning = Attention : Cette action est irréversible. Les écritures comptables seront créées automatiquement.