diff --git a/addons/l10n_be/wizard/l10n_be_account_vat_declaration.py b/addons/l10n_be/wizard/l10n_be_account_vat_declaration.py
index a5e664c833a..155e40b256b 100644
--- a/addons/l10n_be/wizard/l10n_be_account_vat_declaration.py
+++ b/addons/l10n_be/wizard/l10n_be_account_vat_declaration.py
@@ -106,6 +106,9 @@ class l10n_be_vat_declaration(osv.osv_memory):
         data_of_file +='\n\t\t<DATA>\n\t\t\t<DATA_ELEM>'
 
         for item in tax_info:
+            if item['code'] == '91' and ending_month != 12:
+                #the tax code 91 can only be send for the declaration of December
+                continue
             if item['code']:
                 if item['code'] == '71-72':
                     item['code']='71'