+ my $cust_pkg = $_[0];
+ $self->calc_prorate(@_, $self->cutoff_day($cust_pkg))
+ - $self->calc_discount(@_);
+}
+
+sub cutoff_day {
+ my( $self, $cust_pkg ) = @_;
+ my $prorate_day = $cust_pkg->cust_main->prorate_day;
+ $prorate_day ? ( $prorate_day )
+ : split(/\s*,\s*/, $self->option('cutoff_day', 1) || '1');