diff --git a/core/class/declarationtva.class.php b/core/class/declarationtva.class.php
index 985ce51..1d3078b 100644
--- a/core/class/declarationtva.class.php
+++ b/core/class/declarationtva.class.php
@@ -1225,6 +1225,10 @@ class DeclarationTVA
         // Use Dolibarr's bookkeeping class with correct field mapping
         require_once DOL_DOCUMENT_ROOT . '/accountancy/class/bookkeeping.class.php';
         
+        // Start transaction
+        $this->db->begin();
+        error_log("DEBUG: Database transaction started");
+        
         foreach ($entries as $entry) {
             error_log("DEBUG: Creating accounting entry for account: " . $entry['account_code'] . ", debit: " . $entry['debit'] . ", credit: " . $entry['credit']);
             
@@ -1295,6 +1299,7 @@ class DeclarationTVA
                     error_log("DEBUG: Debit entry created successfully with ID: " . $result);
                 } else {
                     error_log("DEBUG: Debit entry creation failed - result: " . $result . ", error: " . $debit->error);
+                    $this->db->rollback();
                     $this->error = 'Failed to create debit entry: ' . $debit->error;
                     return false;
                 }
@@ -1332,12 +1337,17 @@ class DeclarationTVA
                     error_log("DEBUG: Credit entry created successfully with ID: " . $result);
                 } else {
                     error_log("DEBUG: Credit entry creation failed - result: " . $result . ", error: " . $credit->error);
+                    $this->db->rollback();
                     $this->error = 'Failed to create credit entry: ' . $credit->error;
                     return false;
                 }
             }
         }
         
+        // Commit the transaction
+        $this->db->commit();
+        error_log("DEBUG: Database transaction committed");
+        
         // Final verification - check all entries created for this declaration
         $final_check_sql = "SELECT COUNT(*) as total_entries FROM " . MAIN_DB_PREFIX . "accounting_bookkeeping 
                            WHERE doc_ref = '" . $this->db->escape($declaration->declaration_name) . "'";