diff --git a/app/models/calculator/flat_rate.rb b/app/models/calculator/flat_rate.rb
index 6dae041ec3..a8ab771b98 100644
--- a/app/models/calculator/flat_rate.rb
+++ b/app/models/calculator/flat_rate.rb
@@ -7,7 +7,6 @@ module Calculator
     extend Spree::LocalizedNumber
 
     preference :amount, :decimal, default: 0
-    preference :currency, :string, default: Spree::Config[:currency]
 
     localize_number :preferred_amount
 
diff --git a/app/models/calculator/flexi_rate.rb b/app/models/calculator/flexi_rate.rb
index 09a0978018..bb6bb1ff9b 100644
--- a/app/models/calculator/flexi_rate.rb
+++ b/app/models/calculator/flexi_rate.rb
@@ -9,7 +9,6 @@ module Calculator
     preference :first_item,      :decimal, default: 0.0
     preference :additional_item, :decimal, default: 0.0
     preference :max_items,       :integer, default: 0
-    preference :currency,        :string,  default: Spree::Config[:currency]
 
     localize_number :preferred_first_item,
                     :preferred_additional_item
diff --git a/app/models/calculator/per_item.rb b/app/models/calculator/per_item.rb
index b5e8d86e91..f8cce8e7a7 100644
--- a/app/models/calculator/per_item.rb
+++ b/app/models/calculator/per_item.rb
@@ -7,7 +7,6 @@ module Calculator
     extend Spree::LocalizedNumber
 
     preference :amount, :decimal, default: 0
-    preference :currency, :string, default: Spree::Config[:currency]
 
     localize_number :preferred_amount
 
diff --git a/app/models/calculator/price_sack.rb b/app/models/calculator/price_sack.rb
index a36783afe1..910b663b1d 100644
--- a/app/models/calculator/price_sack.rb
+++ b/app/models/calculator/price_sack.rb
@@ -9,7 +9,6 @@ module Calculator
     preference :minimal_amount, :decimal, default: 0
     preference :normal_amount, :decimal, default: 0
     preference :discount_amount, :decimal, default: 0
-    preference :currency, :string, default: Spree::Config[:currency]
 
     localize_number :preferred_minimal_amount,
                     :preferred_normal_amount,
diff --git a/app/services/permitted_attributes/calculator.rb b/app/services/permitted_attributes/calculator.rb
index ba5385d01c..af11b052b4 100644
--- a/app/services/permitted_attributes/calculator.rb
+++ b/app/services/permitted_attributes/calculator.rb
@@ -4,7 +4,7 @@ module PermittedAttributes
   class Calculator
     def self.attributes
       [
-        :id, :preferred_currency, :preferred_amount, :preferred_flat_percent,
+        :id, :preferred_amount, :preferred_flat_percent,
         :preferred_minimal_amount, :preferred_normal_amount, :preferred_discount_amount,
         :preferred_unit_from_list, :preferred_per_unit, :preferred_first_item,
         :preferred_additional_item, :preferred_max_items
diff --git a/spec/controllers/spree/admin/payment_methods_controller_spec.rb b/spec/controllers/spree/admin/payment_methods_controller_spec.rb
index d402e0d981..f1c818b141 100644
--- a/spec/controllers/spree/admin/payment_methods_controller_spec.rb
+++ b/spec/controllers/spree/admin/payment_methods_controller_spec.rb
@@ -123,7 +123,6 @@ module Spree
               calculator_attributes: {
                 id: payment_method.calculator.id,
                 preferred_amount: 456,
-                preferred_currency: "GBP"
               }
             }
           }
@@ -138,7 +137,6 @@ module Spree
           expect(payment_method.name).to eq "Updated"
           expect(payment_method.description).to eq "Updated"
           expect(payment_method.calculator.preferred_amount).to eq 456
-          expect(payment_method.calculator.preferred_currency).to eq "GBP"
         end
 
         context "when the given payment method type does not match" do
diff --git a/spec/controllers/spree/admin/shipping_methods_controller_spec.rb b/spec/controllers/spree/admin/shipping_methods_controller_spec.rb
index 77ac5ddbd9..4d63db79db 100644
--- a/spec/controllers/spree/admin/shipping_methods_controller_spec.rb
+++ b/spec/controllers/spree/admin/shipping_methods_controller_spec.rb
@@ -20,15 +20,13 @@ describe Spree::Admin::ShippingMethodsController, type: :controller do
 
     before { controller_login_as_admin }
 
-    it "updates preferred_amount and preferred_currency of a FlatRate calculator" do
+    it "updates preferred_amount of a FlatRate calculator" do
       shipping_method.calculator = create(:calculator_flat_rate, calculable: shipping_method)
       params[:shipping_method][:calculator_attributes][:preferred_amount] = 123
-      params[:shipping_method][:calculator_attributes][:preferred_currency] = "EUR"
 
       spree_post :update, params
 
       expect(shipping_method.reload.calculator.preferred_amount).to eq 123
-      expect(shipping_method.reload.calculator.preferred_currency).to eq "EUR"
     end
 
     %i[