diff --git a/lib/active_merchant/billing/gateways/stripe.rb b/lib/active_merchant/billing/gateways/stripe.rb
index cf2af37b42c..3c1cedecea6 100644
--- a/lib/active_merchant/billing/gateways/stripe.rb
+++ b/lib/active_merchant/billing/gateways/stripe.rb
@@ -40,7 +40,7 @@ def authorize(money, creditcard, options = {})
         post = create_post_for_auth_or_purchase(money, creditcard, options)
         post[:capture] = "false"
 
-        commit(:post, 'charges', post, generate_options(options))
+        commit(:post, 'charges', post, options)
       end
 
       # To create a charge on a card or a token, call
@@ -53,31 +53,30 @@ def authorize(money, creditcard, options = {})
       def purchase(money, creditcard, options = {})
         post = create_post_for_auth_or_purchase(money, creditcard, options)
 
-        commit(:post, 'charges', post, generate_options(options))
+        commit(:post, 'charges', post, options)
       end
 
       def capture(money, authorization, options = {})
         post = {:amount => amount(money)}
         add_application_fee(post, options)
 
-        commit(:post, "charges/#{CGI.escape(authorization)}/capture", post)
+        commit(:post, "charges/#{CGI.escape(authorization)}/capture", post, options)
       end
 
       def void(identification, options = {})
-        commit(:post, "charges/#{CGI.escape(identification)}/refund", {})
+        commit(:post, "charges/#{CGI.escape(identification)}/refund", {}, options)
       end
 
       def refund(money, identification, options = {})
         post = {:amount => amount(money)}
-        commit_options = generate_options(options)
 
         MultiResponse.run(:first) do |r|
-          r.process { commit(:post, "charges/#{CGI.escape(identification)}/refund", post, commit_options) }
+          r.process { commit(:post, "charges/#{CGI.escape(identification)}/refund", post, options) }
 
           return r unless options[:refund_fee_amount]
 
-          r.process { fetch_application_fees(identification, commit_options) }
-          r.process { refund_application_fee(options[:refund_fee_amount], application_fee_from_response(r), commit_options) }
+          r.process { fetch_application_fees(identification, options) }
+          r.process { refund_application_fee(options[:refund_fee_amount], application_fee_from_response(r), options) }
         end
       end
 
@@ -104,17 +103,16 @@ def store(creditcard, options = {})
         post[:description] = options[:description]
         post[:email] = options[:email]
 
-        commit_options = generate_options(options)
         if options[:customer]
           MultiResponse.run(:first) do |r|
-            r.process { commit(:post, "customers/#{CGI.escape(options[:customer])}/cards", post, commit_options) }
+            r.process { commit(:post, "customers/#{CGI.escape(options[:customer])}/cards", post, options) }
 
             return r unless options[:set_default] and r.success? and !r.params["id"].blank?
 
             r.process { update_customer(options[:customer], :default_card => r.params["id"]) }
           end
         else
-          commit(:post, 'customers', post, commit_options)
+          commit(:post, 'customers', post, options)
         end
       end
 
@@ -124,14 +122,14 @@ def update(customer_id, creditcard, options = {})
       end
 
       def update_customer(customer_id, options = {})
-        commit(:post, "customers/#{CGI.escape(customer_id)}", options, generate_options(options))
+        commit(:post, "customers/#{CGI.escape(customer_id)}", options, options)
       end
 
       def unstore(customer_id, card_id = nil, options = {})
         if card_id.nil?
-          commit(:delete, "customers/#{CGI.escape(customer_id)}", nil, generate_options(options))
+          commit(:delete, "customers/#{CGI.escape(customer_id)}", nil, options)
         else
-          commit(:delete, "customers/#{CGI.escape(customer_id)}/cards/#{CGI.escape(card_id)}", nil, generate_options(options))
+          commit(:delete, "customers/#{CGI.escape(customer_id)}/cards/#{CGI.escape(card_id)}", nil, options)
         end
       end
 
@@ -159,6 +157,10 @@ def add_application_fee(post, options)
         post[:application_fee] = options[:application_fee] if options[:application_fee]
       end
 
+      def add_expand_parameters(post, options)
+        post[:expand] = Array.wrap(options[:expand])
+      end
+
       def add_customer_data(post, options)
         metadata_options = [:description, :ip, :user_agent, :referrer]
         post.update(options.slice(*metadata_options))
@@ -233,21 +235,14 @@ def post_data(params)
               h["#{key}[#{k}]"] = v unless v.blank?
             end
             post_data(h)
+          elsif value.is_a?(Array)
+            value.map { |v| "#{key}[]=#{CGI.escape(v.to_s)}" }.join("&")
           else
             "#{key}=#{CGI.escape(value.to_s)}"
           end
         end.compact.join("&")
       end
 
-      def generate_options(raw_options)
-        options = generate_meta(raw_options)
-        options.merge!(raw_options.slice(:version, :key))
-      end
-
-      def generate_meta(options)
-        {:meta => {:ip => options[:ip]}}
-      end
-
       def headers(options = {})
         @@ua ||= JSON.dump({
           :bindings_version => ActiveMerchant::VERSION,
@@ -263,13 +258,15 @@ def headers(options = {})
           "Authorization" => "Basic " + Base64.encode64(key.to_s + ":").strip,
           "User-Agent" => "Stripe/v1 ActiveMerchantBindings/#{ActiveMerchant::VERSION}",
           "X-Stripe-Client-User-Agent" => @@ua,
-          "X-Stripe-Client-User-Metadata" => options[:meta].to_json
+          "X-Stripe-Client-User-Metadata" => {:ip => options[:ip]}.to_json
         }
         headers.merge!("Stripe-Version" => options[:version]) if options[:version]
         headers
       end
 
       def commit(method, url, parameters=nil, options = {})
+        add_expand_parameters(parameters, options) if parameters
+
         raw_response = response = nil
         success = false
         begin
diff --git a/lib/active_merchant/billing/gateways/webpay.rb b/lib/active_merchant/billing/gateways/webpay.rb
index de8d6e484dc..c4543e63682 100644
--- a/lib/active_merchant/billing/gateways/webpay.rb
+++ b/lib/active_merchant/billing/gateways/webpay.rb
@@ -21,15 +21,14 @@ def capture(money, authorization, options = {})
 
       def refund(money, identification, options = {})
         post = {:amount => localized_amount(money)}
-        commit_options = generate_meta(options)
 
         MultiResponse.run do |r|
-          r.process { commit(:post, "charges/#{CGI.escape(identification)}/refund", post, commit_options) }
+          r.process { commit(:post, "charges/#{CGI.escape(identification)}/refund", post, options) }
 
           return r unless options[:refund_fee_amount]
 
-          r.process { fetch_application_fees(identification, commit_options) }
-          r.process { refund_application_fee(options[:refund_fee_amount], application_fee_from_response(r), commit_options) }
+          r.process { fetch_application_fees(identification, options) }
+          r.process { refund_application_fee(options[:refund_fee_amount], application_fee_from_response(r), options) }
         end
       end
 
@@ -56,17 +55,16 @@ def store(creditcard, options = {})
         post[:description] = options[:description]
         post[:email] = options[:email]
 
-        commit_options = generate_options(options)
         if options[:customer]
           MultiResponse.run(:first) do |r|
-            r.process { commit(:post, "customers/#{CGI.escape(options[:customer])}/", post, commit_options) }
+            r.process { commit(:post, "customers/#{CGI.escape(options[:customer])}/", post, options) }
 
             return r unless options[:set_default] and r.success? and !r.params["id"].blank?
 
             r.process { update_customer(options[:customer], :default_card => r.params["id"]) }
           end
         else
-          commit(:post, 'customers', post, commit_options)
+          commit(:post, 'customers', post, options)
         end
       end
 
@@ -93,7 +91,7 @@ def headers(options = {})
           "Authorization" => "Basic " + Base64.encode64(@api_key.to_s + ":").strip,
           "User-Agent" => "Webpay/v1 ActiveMerchantBindings/#{ActiveMerchant::VERSION}",
           "X-Webpay-Client-User-Agent" => @@ua,
-          "X-Webpay-Client-User-Metadata" => options[:meta].to_json
+          "X-Webpay-Client-User-Metadata" => {:ip => options[:ip]}.to_json
         }
       end
     end
diff --git a/test/remote/gateways/remote_stripe_test.rb b/test/remote/gateways/remote_stripe_test.rb
index f82fb5dbf5a..603386caaef 100644
--- a/test/remote/gateways/remote_stripe_test.rb
+++ b/test/remote/gateways/remote_stripe_test.rb
@@ -186,4 +186,11 @@ def test_creditcard_purchase_with_customer
     assert_equal "charge", response.params["object"]
     assert response.params["paid"]
   end
+
+  def test_expanding_objects
+    assert response = @gateway.purchase(@amount, @credit_card, @options.merge(:expand => 'balance_transaction'))
+    assert_success response
+    assert response.params['balance_transaction'].is_a?(Hash)
+    assert_equal 'balance_transaction', response.params['balance_transaction']['object']
+  end
 end
diff --git a/test/unit/gateways/stripe_test.rb b/test/unit/gateways/stripe_test.rb
index 9ef3407819c..bda7fcbf655 100644
--- a/test/unit/gateways/stripe_test.rb
+++ b/test/unit/gateways/stripe_test.rb
@@ -331,6 +331,26 @@ def generate_options_should_allow_key
     assert_equal({:key => '12345'}, generate_options({:key => '12345'}))
   end
 
+  def test_passing_expand_parameters
+    @gateway.expects(:ssl_request).with do |method, url, post, headers|
+      assert post.include?("expand[]=balance_transaction")
+    end.returns(successful_authorization_response)
+
+    @options.merge!(:expand => :balance_transaction)
+
+    @gateway.authorize(@amount, @credit_card, @options)
+  end
+
+  def test_passing_expand_parameters_as_array
+    @gateway.expects(:ssl_request).with do |method, url, post, headers|
+      assert post.include?("expand[]=balance_transaction&expand[]=customer")
+    end.returns(successful_authorization_response)
+
+    @options.merge!(:expand => [:balance_transaction, :customer])
+
+    @gateway.authorize(@amount, @credit_card, @options)
+  end
+
   private
 
   # Create new customer and set default credit card