diff --git a/app/serializers/v1/tax_serializer.rb b/app/serializers/v1/tax_serializer.rb
index e0604858453..a1e86f6e47d 100644
--- a/app/serializers/v1/tax_serializer.rb
+++ b/app/serializers/v1/tax_serializer.rb
@@ -13,7 +13,8 @@ def serialize
         add_ons_count: model.add_ons.count,
         customers_count: model.customers_count,
         plans_count: model.plans.count,
-        charges_count: model.charges.count,
+        # DEPRECATED: this is creating a major performance issue
+        # charges_count: model.charges.count,
         commitments_count: model.commitments.count,
         created_at: model.created_at.iso8601
       }
diff --git a/spec/serializers/v1/tax_serializer_spec.rb b/spec/serializers/v1/tax_serializer_spec.rb
index 9af144d1c75..73f1f959b47 100644
--- a/spec/serializers/v1/tax_serializer_spec.rb
+++ b/spec/serializers/v1/tax_serializer_spec.rb
@@ -19,7 +19,6 @@
       'add_ons_count' => 0,
       'customers_count' => 0,
       'plans_count' => 0,
-      'charges_count' => 0,
       'created_at' => tax.created_at.iso8601
     )
   end