When the order does not have a hub, all tax rates apply

app/models/spree/tax_rate_decorator.rb

@@ -1,7 +1,7 @@
 Spree::TaxRate.class_eval do
   class << self
     def match_with_sales_tax_registration(order)
-      return [] unless order.distributor.charges_sales_tax
+      return [] if order.distributor && !order.distributor.charges_sales_tax
       match_without_sales_tax_registration(order)
     end
     alias_method_chain :match, :sales_tax_registration

spec/features/consumer/shopping/checkout_spec.rb

@@ -9,7 +9,7 @@ feature "As a consumer I want to check out my cart", js: true do
   include UIComponentHelper
 
   let!(:zone) { create(:zone_with_member) }
-  let(:distributor) { create(:distributor_enterprise) }
+  let(:distributor) { create(:distributor_enterprise, charges_sales_tax: true) }
   let(:supplier) { create(:supplier_enterprise) }
   let!(:order_cycle) { create(:simple_order_cycle, suppliers: [supplier], distributors: [distributor], coordinator: create(:distributor_enterprise), variants: [product.master]) }
   let(:enterprise_fee) { create(:enterprise_fee, amount: 1.23, tax_category: product.tax_category) }

spec/models/spree/tax_rate_spec.rb

@@ -5,7 +5,7 @@ module Spree
       let!(:order) { create(:order, distributor: hub, bill_address: create(:address)) }
       let!(:tax_rate) { create(:tax_rate, included_in_price: true, calculator: Calculator::FlatRate.new(preferred_amount: 0.1), zone: zone) }
 
-      context "when the order's hub charges sales tax" do
+      describe "when the order's hub charges sales tax" do
         let(:hub) { create(:distributor_enterprise, charges_sales_tax: true) }
 
         it "selects all tax rates" do
@@ -13,13 +13,21 @@ module Spree
         end
       end
 
-      context "when the order's hub does not charge sales tax" do
+      describe "when the order's hub does not charge sales tax" do
         let(:hub) { create(:distributor_enterprise, charges_sales_tax: false) }
 
         it "selects no tax rates" do
           TaxRate.match(order).should be_empty
         end
       end
+
+      describe "when the order does not have a hub" do
+        let!(:order) { create(:order, distributor: nil, bill_address: create(:address)) }
+
+        it "selects all tax rates" do
+          TaxRate.match(order).should == [tax_rate]
+        end
+      end
     end
   end
 end