diff --git a/src/Services/BankImportParser.php b/src/Services/BankImportParser.php
index d7e8ade..ec4203f 100644
--- a/src/Services/BankImportParser.php
+++ b/src/Services/BankImportParser.php
@@ -78,6 +78,11 @@ class BankImportParser
         // BOM entfernen
         $content = preg_replace('/^\xEF\xBB\xBF/', '', $content);
 
+        // ISO-8859-1 → UTF-8 konvertieren wenn nötig
+        if (!mb_check_encoding($content, 'UTF-8')) {
+            $content = mb_convert_encoding($content, 'UTF-8', 'ISO-8859-1');
+        }
+
         // Verschiedene Zeilenenden normalisieren
         $content = str_replace(["\r\n", "\r"], "\n", $content);
         $lines   = explode("\n", $content);