use SL::DB::MetaSetup::Chart;
 use SL::DB::Manager::Chart;
-use SL::DB::TaxKey;
 
 __PACKAGE__->meta->add_relationships(taxkeys => { type         => 'one to many',
                                                   class        => 'SL::DB::TaxKey',
 sub get_active_taxkey {
   my ($self, $date) = @_;
   $date ||= DateTime->today_local;
-  return SL::DB::Manager::TaxKey->get_all(where   => [ and => [ chart_id  => $self->id,
-                                                                startdate => { le => $date } ] ],
-                                          sort_by => "startdate DESC")->[0];
+
+  my $cache = $::request->cache("get_active_taxkey")->{$date} //= {};
+  return $cache->{$self->id} if $cache->{$self->id};
+
+  require SL::DB::TaxKey;
+  return $cache->{$self->id} = SL::DB::Manager::TaxKey->get_all(
+    query   => [ and => [ chart_id  => $self->id,
+                          startdate => { le => $date } ] ],
+    sort_by => "startdate DESC")->[0];
 }
 
 1;