diff --git a/app/models/account.rb b/app/models/account.rb
index fe3866e..c1b7282 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -3,6 +3,8 @@
 class Account < ApplicationRecord
   rolify role_join_table_name: :account_roles
 
+  belongs_to :person, optional: true
+
   has_one :user, dependent: :restrict_with_exception
 
   has_many :own_membership_apps,
@@ -17,6 +19,8 @@ class Account < ApplicationRecord
     self.guest_token = SecureRandom.hex
   end
 
+  validates :person_id, allow_nil: true, uniqueness: true
+
   def guest?
     user.nil?
   end
diff --git a/app/models/person.rb b/app/models/person.rb
index 5bb341a..d9986e4 100644
--- a/app/models/person.rb
+++ b/app/models/person.rb
@@ -1,4 +1,5 @@
 # frozen_string_literal: true
 
 class Person < ApplicationRecord
+  has_one :account, dependent: :restrict_with_exception
 end
diff --git a/db/migrate/20181210033307_add_person_to_accounts.rb b/db/migrate/20181210033307_add_person_to_accounts.rb
new file mode 100644
index 0000000..34b4dab
--- /dev/null
+++ b/db/migrate/20181210033307_add_person_to_accounts.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddPersonToAccounts < ActiveRecord::Migration[5.2]
+  def change
+    add_reference :accounts, :person, index: { unique: true }, foreign_key: true
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 3804d35..d414af8 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2018_12_10_033105) do
+ActiveRecord::Schema.define(version: 2018_12_10_033307) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -29,6 +29,8 @@ ActiveRecord::Schema.define(version: 2018_12_10_033105) do
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
     t.string "guest_token", null: false
+    t.bigint "person_id"
+    t.index ["person_id"], name: "index_accounts_on_person_id", unique: true
   end
 
   create_table "active_storage_attachments", force: :cascade do |t|
@@ -195,6 +197,7 @@ ActiveRecord::Schema.define(version: 2018_12_10_033105) do
 
   add_foreign_key "account_roles", "accounts"
   add_foreign_key "account_roles", "roles"
+  add_foreign_key "accounts", "people"
   add_foreign_key "membership_apps", "accounts"
   add_foreign_key "membership_apps", "country_states"
   add_foreign_key "passport_confirmations", "accounts"
diff --git a/factories/accounts.rb b/factories/accounts.rb
index 52e1b80..69faf96 100644
--- a/factories/accounts.rb
+++ b/factories/accounts.rb
@@ -7,7 +7,11 @@ FactoryBot.define do
     association :user
   end
 
-  factory :superuser_account, parent: :usual_account do
+  factory :personal_account, parent: :usual_account do
+    association :person
+  end
+
+  factory :superuser_account, parent: :personal_account do
     after :create do |account, _evaluator|
       account.add_role :superuser
     end
diff --git a/spec/models/account_spec.rb b/spec/models/account_spec.rb
index 25ceb82..ab042f7 100644
--- a/spec/models/account_spec.rb
+++ b/spec/models/account_spec.rb
@@ -3,7 +3,9 @@
 require 'rails_helper'
 
 RSpec.describe Account do
-  subject { create :usual_account }
+  subject { create :personal_account }
+
+  it { is_expected.to belong_to(:person).optional }
 
   it do
     is_expected.to \
@@ -24,6 +26,7 @@ RSpec.describe Account do
       .dependent(:restrict_with_exception)
   end
 
+  it { is_expected.not_to validate_presence_of :person }
   it { is_expected.not_to validate_presence_of :user }
 
   pending '.guests'
diff --git a/spec/models/person_spec.rb b/spec/models/person_spec.rb
index de4c7aa..5c88d38 100644
--- a/spec/models/person_spec.rb
+++ b/spec/models/person_spec.rb
@@ -5,5 +5,11 @@ require 'rails_helper'
 RSpec.describe Person do
   subject { create :person }
 
+  it do
+    is_expected.to \
+      have_one(:account)
+      .dependent(:restrict_with_exception)
+  end
+
   pending "add some examples to (or delete) #{__FILE__}"
 end