diff --git a/app/models/coupon.rb b/app/models/coupon.rb
index 67db94b1d..0e3dfdd70 100644
--- a/app/models/coupon.rb
+++ b/app/models/coupon.rb
@@ -1,5 +1,5 @@
 class Coupon < ActiveRecord::Base
-  has_many :invoice
+  has_many :invoices
 
   validates :code, presence: true
   validates :code, format: { with: /[A-Z0-9]+/ ,message: 'only caps letters and numbers'}
diff --git a/app/views/api/coupons/_coupon.json.jbuilder b/app/views/api/coupons/_coupon.json.jbuilder
index f66ec1ec6..b07ac132b 100644
--- a/app/views/api/coupons/_coupon.json.jbuilder
+++ b/app/views/api/coupons/_coupon.json.jbuilder
@@ -1 +1,2 @@
-json.extract! coupon, :id, :name, :code, :percent_off, :valid_until, :max_usages, :active, :created_at
\ No newline at end of file
+json.extract! coupon, :id, :name, :code, :percent_off, :valid_until, :max_usages, :active, :created_at
+json.usages @coupon.invoices.count
\ No newline at end of file
diff --git a/app/views/api/coupons/index.json.jbuilder b/app/views/api/coupons/index.json.jbuilder
new file mode 100644
index 000000000..b5f4a4142
--- /dev/null
+++ b/app/views/api/coupons/index.json.jbuilder
@@ -0,0 +1,5 @@
+json.cache! [@coupons] do
+  json.array!(@coupons) do |coupon|
+    json.partial! 'api/coupons/coupon', coupon: coupon
+  end
+end
diff --git a/db/migrate/20160804073558_remove_usages_from_coupons.rb b/db/migrate/20160804073558_remove_usages_from_coupons.rb
new file mode 100644
index 000000000..4988a01b6
--- /dev/null
+++ b/db/migrate/20160804073558_remove_usages_from_coupons.rb
@@ -0,0 +1,5 @@
+class RemoveUsagesFromCoupons < ActiveRecord::Migration
+  def change
+    remove_column :coupons, :usages, :integer
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index f94ed49ef..31d8da9eb 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20160803104701) do
+ActiveRecord::Schema.define(version: 20160804073558) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -110,7 +110,6 @@ ActiveRecord::Schema.define(version: 20160803104701) do
     t.integer  "percent_off"
     t.datetime "valid_until"
     t.integer  "max_usages"
-    t.integer  "usages"
     t.boolean  "active"
     t.string   "stp_coupon_id"
     t.datetime "created_at",    null: false