diff --git a/app/models/chargeable_field.rb b/app/models/chargeable_field.rb
index 522bd217f2b..db7cef5757b 100644
--- a/app/models/chargeable_field.rb
+++ b/app/models/chargeable_field.rb
@@ -70,6 +70,13 @@ def metric_key(sub_metric = nil)
     "#{rate_name}_#{sub_metric ? sub_metric + '_' : ''}metric" # metric value (e.g. Storage [Used|Allocated|Fixed])
   end
 
+  # Fixed metric has _1 or _2 in name but column
+  # fixed_compute_metric is used in report and calculations
+  # TODO: remove and unify with metric_key
+  def metric_column_key
+    fixed? ? metric_key.gsub(/\_1|\_2/, '') : metric_key
+  end
+
   def cost_keys(sub_metric = nil)
     keys = ["#{rate_name}_#{sub_metric ? sub_metric + '_' : ''}cost", # cost associated with metric (e.g. Storage [Used|Allocated|Fixed] Cost)
             'total_cost']
diff --git a/app/models/chargeback.rb b/app/models/chargeback.rb
index 34d99c7b0b5..4142956193c 100644
--- a/app/models/chargeback.rb
+++ b/app/models/chargeback.rb
@@ -116,7 +116,7 @@ def new_chargeback_calculate_costs(consumption, rates)
                                                              :resource    => MiqEnterprise.first)
 
       data = {}
-      rate.rate_details_relevant_to(relevant_fields).each do |r|
+      rate.rate_details_relevant_to(relevant_fields, self.class.attribute_names).each do |r|
         r.populate_showback_rate(plan, r, showback_category)
         measure = r.chargeable_field.showback_measure
         dimension, _, _ = r.chargeable_field.showback_dimension
@@ -152,7 +152,7 @@ def calculate_costs(consumption, rates)
     self.class.try(:refresh_dynamic_metric_columns)
 
     rates.each do |rate|
-      rate.rate_details_relevant_to(relevant_fields).each do |r|
+      rate.rate_details_relevant_to(relevant_fields, self.class.attribute_names).each do |r|
         r.charge(relevant_fields, consumption, @options).each do |field, value|
           next unless self.class.attribute_names.include?(field)
           self[field] = self[field].kind_of?(Numeric) ? (self[field] || 0) + value : value
diff --git a/app/models/chargeback_rate.rb b/app/models/chargeback_rate.rb
index 2c2d9ef6097..b09b38cd86e 100644
--- a/app/models/chargeback_rate.rb
+++ b/app/models/chargeback_rate.rb
@@ -35,9 +35,13 @@ def self.tag_class(klass)
     super(klass)
   end
 
-  def rate_details_relevant_to(report_cols)
-    # we can memoize, as we get the same report_cols thrrough the life of the object
-    @relevant ||= chargeback_rate_details.select { |r| r.affects_report_fields(report_cols) }
+  def rate_details_relevant_to(report_cols, allowed_cols)
+    # we can memoize, as we get the same report_cols through the life of the object
+    @relevant ||= begin
+      chargeback_rate_details.select do |r|
+        r.affects_report_fields(report_cols) && allowed_cols.include?(r.metric_column_key)
+      end
+    end
   end
 
   def self.validate_rate_type(type)
diff --git a/app/models/chargeback_rate_detail.rb b/app/models/chargeback_rate_detail.rb
index d0d0ea387c7..3de5d303a33 100644
--- a/app/models/chargeback_rate_detail.rb
+++ b/app/models/chargeback_rate_detail.rb
@@ -12,7 +12,7 @@ class ChargebackRateDetail < ApplicationRecord
 
   delegate :rate_type, :to => :chargeback_rate, :allow_nil => true
 
-  delegate :metric_key, :cost_keys, :rate_key, :to => :chargeable_field
+  delegate :metric_column_key, :metric_key, :cost_keys, :rate_key, :to => :chargeable_field
 
   FORM_ATTRIBUTES = %i(description per_time per_unit metric group source metric chargeable_field_id sub_metric).freeze
   PER_TIME_TYPES = {
diff --git a/spec/models/chargeback_rate_spec.rb b/spec/models/chargeback_rate_spec.rb
index 7215f741c57..ae52dc08c3e 100644
--- a/spec/models/chargeback_rate_spec.rb
+++ b/spec/models/chargeback_rate_spec.rb
@@ -1,4 +1,16 @@
 describe ChargebackRate do
+  describe "#rate_details_relevant_to" do
+    let(:count_hourly_variable_tier_rate) { {:variable_rate => '10'} }
+
+    let!(:chargeback_rate) do
+      FactoryGirl.create(:chargeback_rate, :detail_params => {:chargeback_rate_detail_cpu_cores_allocated => {:tiers => [count_hourly_variable_tier_rate]}})
+    end
+
+    it "skips cpu_cores_allocated column" do
+      expect(chargeback_rate.rate_details_relevant_to(['total_cost'].to_set, ChargebackVm.attribute_names)).to be_empty
+    end
+  end
+
   context ".validate_rate_type" do
     it "handles valid types" do
       [:compute, :storage, 'compute', 'storage', 'Compute', 'Storage'].each do |type|
diff --git a/spec/models/chargeback_vm_spec.rb b/spec/models/chargeback_vm_spec.rb
index 4eae1145b58..4520c4f62c3 100644
--- a/spec/models/chargeback_vm_spec.rb
+++ b/spec/models/chargeback_vm_spec.rb
@@ -627,6 +627,16 @@ def result_row_for_vm(vm)
 
         subject { ChargebackVm.build_results_for_report_ChargebackVm(options).first.first }
 
+        context "chargeback rate contains rate unrelated to chargeback vm" do
+          let!(:chargeback_rate) do
+            FactoryGirl.create(:chargeback_rate, :detail_params => detail_params.merge(:chargeback_rate_detail_cpu_cores_allocated => {:tiers => [count_hourly_variable_tier_rate]}))
+          end
+
+          it "skips unrelated columns and calculate related columns" do
+            expect(subject.cpu_allocated_metric).to eq(cpu_count)
+          end
+        end
+
         it "cpu" do
           expect(subject.cpu_allocated_metric).to eq(cpu_count)
           used_metric = used_average_for(:cpu_usagemhz_rate_average, hours_in_month, @vm1)