diff --git a/app/models/derived_variables/sales_log_variables.rb b/app/models/derived_variables/sales_log_variables.rb
index 88bad228f..5fff0900d 100644
--- a/app/models/derived_variables/sales_log_variables.rb
+++ b/app/models/derived_variables/sales_log_variables.rb
@@ -6,5 +6,6 @@ module DerivedVariables::SalesLogVariables
       self.exmonth = exdate.month
       self.exyear = exdate.year
     end
+    self.deposit = value if outright_sale? && mortgage_not_used?
   end
 end
diff --git a/app/models/form/sales/pages/mortgageused.rb b/app/models/form/sales/pages/mortgageused.rb
new file mode 100644
index 000000000..cc320f145
--- /dev/null
+++ b/app/models/form/sales/pages/mortgageused.rb
@@ -0,0 +1,14 @@
+class Form::Sales::Pages::Mortgageused < ::Form::Page
+  def initialize(id, hsh, subsection)
+    super
+    @header = ""
+    @description = ""
+    @subsection = subsection
+  end
+
+  def questions
+    @questions ||= [
+      Form::Sales::Questions::Mortgageused.new(nil, nil, self),
+    ]
+  end
+end
diff --git a/app/models/form/sales/questions/mortgageused.rb b/app/models/form/sales/questions/mortgageused.rb
new file mode 100644
index 000000000..2374056a8
--- /dev/null
+++ b/app/models/form/sales/questions/mortgageused.rb
@@ -0,0 +1,17 @@
+class Form::Sales::Questions::Mortgageused < ::Form::Question
+  def initialize(id, hsh, page)
+    super
+    @id = "mortgageused"
+    @check_answer_label = "Mortgage used"
+    @header = "Was a mortgage used for the purchase of this property?"
+    @type = "radio"
+    @answer_options = ANSWER_OPTIONS
+    @page = page
+    @hint_text = ""
+  end
+
+  ANSWER_OPTIONS = {
+    "1" => { "value" => "Yes" },
+    "2" => { "value" => "No" },
+  }.freeze
+end
diff --git a/app/models/form/sales/subsections/discounted_ownership_scheme.rb b/app/models/form/sales/subsections/discounted_ownership_scheme.rb
index c0d65522f..9181e9c41 100644
--- a/app/models/form/sales/subsections/discounted_ownership_scheme.rb
+++ b/app/models/form/sales/subsections/discounted_ownership_scheme.rb
@@ -12,6 +12,7 @@ class Form::Sales::Subsections::DiscountedOwnershipScheme < ::Form::Subsection
       Form::Sales::Pages::LivingBeforePurchase.new("living_before_purchase_discounted_ownership", nil, self),
       Form::Sales::Pages::AboutPriceRtb.new(nil, nil, self),
       Form::Sales::Pages::AboutPriceNotRtb.new(nil, nil, self),
+      Form::Sales::Pages::Mortgageused.new("mortgage_used_discounted_ownership", nil, self),
       Form::Sales::Pages::MortgageAmount.new("mortgage_amount_discounted_ownership", nil, self),
       Form::Sales::Pages::AboutDepositWithoutDiscount.new("about_deposit_discounted_ownership", nil, self),
       Form::Sales::Pages::DepositValueCheck.new("discounted_ownership_deposit_value_check", nil, self),
diff --git a/app/models/form/sales/subsections/outright_sale.rb b/app/models/form/sales/subsections/outright_sale.rb
index 4c7f5263f..2b38841ba 100644
--- a/app/models/form/sales/subsections/outright_sale.rb
+++ b/app/models/form/sales/subsections/outright_sale.rb
@@ -10,6 +10,7 @@ class Form::Sales::Subsections::OutrightSale < ::Form::Subsection
   def pages
     @pages ||= [
       Form::Sales::Pages::PurchasePrice.new(nil, nil, self),
+      Form::Sales::Pages::Mortgageused.new("mortgage_used_outright_sale", nil, self),
       Form::Sales::Pages::MortgageAmount.new("mortgage_amount_outright_sale", nil, self),
       Form::Sales::Pages::AboutDepositWithoutDiscount.new("about_deposit_outright_sale", nil, self),
       Form::Sales::Pages::DepositValueCheck.new("outright_sale_deposit_value_check", nil, self),
diff --git a/app/models/form/sales/subsections/shared_ownership_scheme.rb b/app/models/form/sales/subsections/shared_ownership_scheme.rb
index aaf789ff8..c40fa9441 100644
--- a/app/models/form/sales/subsections/shared_ownership_scheme.rb
+++ b/app/models/form/sales/subsections/shared_ownership_scheme.rb
@@ -18,6 +18,7 @@ class Form::Sales::Subsections::SharedOwnershipScheme < ::Form::Subsection
       Form::Sales::Pages::BuyerPrevious.new(nil, nil, self),
       Form::Sales::Pages::PreviousBedrooms.new(nil, nil, self),
       Form::Sales::Pages::AboutPriceSharedOwnership.new(nil, nil, self),
+      Form::Sales::Pages::Mortgageused.new("mortgage_used_shared_ownership", nil, self),
       Form::Sales::Pages::MortgageAmount.new("mortgage_amount_shared_ownership", nil, self),
       Form::Sales::Pages::AboutDepositWithDiscount.new(nil, nil, self),
       Form::Sales::Pages::AboutDepositWithoutDiscount.new("about_deposit_shared_ownership", nil, self),
diff --git a/app/models/sales_log.rb b/app/models/sales_log.rb
index 86c23e0ce..4147cbf36 100644
--- a/app/models/sales_log.rb
+++ b/app/models/sales_log.rb
@@ -143,4 +143,12 @@ class SalesLog < Log
     self[la_inferred_key] = inferred_la.present?
     self[la_key] = inferred_la if inferred_la.present?
   end
+
+  def outright_sale?
+    ownershipsch == 3
+  end
+
+  def mortgage_not_used?
+    mortgageused == 2
+  end
 end
diff --git a/db/migrate/20230104083951_add_mortgageused.rb b/db/migrate/20230104083951_add_mortgageused.rb
new file mode 100644
index 000000000..74e42cc22
--- /dev/null
+++ b/db/migrate/20230104083951_add_mortgageused.rb
@@ -0,0 +1,7 @@
+class AddMortgageused < ActiveRecord::Migration[7.0]
+  def change
+    change_table :sales_logs, bulk: true do |t|
+      t.column :mortgageused, :integer
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 232ff5d4c..4ebaba663 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -458,6 +458,7 @@ ActiveRecord::Schema[7.0].define(version: 2023_01_04_164318) do
     t.integer "savings_value_check"
     t.integer "deposit_value_check"
     t.integer "hb"
+    t.integer "mortgageused"
     t.index ["created_by_id"], name: "index_sales_logs_on_created_by_id"
     t.index ["managing_organisation_id"], name: "index_sales_logs_on_managing_organisation_id"
     t.index ["owning_organisation_id"], name: "index_sales_logs_on_owning_organisation_id"
diff --git a/spec/factories/sales_log.rb b/spec/factories/sales_log.rb
index 7770a76d1..c2fd7e97a 100644
--- a/spec/factories/sales_log.rb
+++ b/spec/factories/sales_log.rb
@@ -87,6 +87,7 @@ FactoryBot.define do
       relat5 { "P" }
       relat6 { "P" }
       hb { 4 }
+      mortgageused { 1 }
     end
   end
 end
diff --git a/spec/models/form/sales/pages/mortgageused_spec.rb b/spec/models/form/sales/pages/mortgageused_spec.rb
new file mode 100644
index 000000000..bbeadd301
--- /dev/null
+++ b/spec/models/form/sales/pages/mortgageused_spec.rb
@@ -0,0 +1,29 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Pages::Mortgageused, type: :model do
+  subject(:page) { described_class.new(page_id, page_definition, subsection) }
+
+  let(:page_id) { "mortgage_used" }
+  let(:page_definition) { nil }
+  let(:subsection) { instance_double(Form::Subsection) }
+
+  it "has correct subsection" do
+    expect(page.subsection).to eq(subsection)
+  end
+
+  it "has correct questions" do
+    expect(page.questions.map(&:id)).to eq(%w[mortgageused])
+  end
+
+  it "has the correct id" do
+    expect(page.id).to eq("mortgage_used")
+  end
+
+  it "has the correct header" do
+    expect(page.header).to eq("")
+  end
+
+  it "has the correct description" do
+    expect(page.description).to eq("")
+  end
+end
diff --git a/spec/models/form/sales/questions/mortgageused_spec.rb b/spec/models/form/sales/questions/mortgageused_spec.rb
new file mode 100644
index 000000000..19f41102d
--- /dev/null
+++ b/spec/models/form/sales/questions/mortgageused_spec.rb
@@ -0,0 +1,48 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Questions::Mortgageused, type: :model do
+  subject(:question) { described_class.new(question_id, question_definition, page) }
+
+  let(:question_id) { nil }
+  let(:question_definition) { nil }
+  let(:page) { instance_double(Form::Page) }
+
+  it "has correct page" do
+    expect(question.page).to eq(page)
+  end
+
+  it "has the correct id" do
+    expect(question.id).to eq("mortgageused")
+  end
+
+  it "has the correct header" do
+    expect(question.header).to eq("Was a mortgage used for the purchase of this property?")
+  end
+
+  it "has the correct check_answer_label" do
+    expect(question.check_answer_label).to eq("Mortgage used")
+  end
+
+  it "has the correct type" do
+    expect(question.type).to eq("radio")
+  end
+
+  it "is not marked as derived" do
+    expect(question.derived?).to be false
+  end
+
+  it "has the correct answer_options" do
+    expect(question.answer_options).to eq({
+      "1" => { "value" => "Yes" },
+      "2" => { "value" => "No" },
+    })
+  end
+
+  it "has correct conditional for" do
+    expect(question.conditional_for).to eq(nil)
+  end
+
+  it "has the correct hint" do
+    expect(question.hint_text).to eq("")
+  end
+end
diff --git a/spec/models/form/sales/subsections/discounted_ownership_scheme_spec.rb b/spec/models/form/sales/subsections/discounted_ownership_scheme_spec.rb
index 02b31541c..f6c05aeb6 100644
--- a/spec/models/form/sales/subsections/discounted_ownership_scheme_spec.rb
+++ b/spec/models/form/sales/subsections/discounted_ownership_scheme_spec.rb
@@ -17,6 +17,7 @@ RSpec.describe Form::Sales::Subsections::DiscountedOwnershipScheme, type: :model
         living_before_purchase_discounted_ownership
         about_price_rtb
         about_price_not_rtb
+        mortgage_used_discounted_ownership
         mortgage_amount_discounted_ownership
         about_deposit_discounted_ownership
         discounted_ownership_deposit_value_check
diff --git a/spec/models/form/sales/subsections/outright_sale_spec.rb b/spec/models/form/sales/subsections/outright_sale_spec.rb
index c19337d16..d39dee44c 100644
--- a/spec/models/form/sales/subsections/outright_sale_spec.rb
+++ b/spec/models/form/sales/subsections/outright_sale_spec.rb
@@ -14,6 +14,7 @@ RSpec.describe Form::Sales::Subsections::OutrightSale, type: :model do
   it "has correct pages" do
     expect(outright_sale.pages.map(&:id)).to eq(
       %w[purchase_price
+         mortgage_used_outright_sale
          mortgage_amount_outright_sale
          about_deposit_outright_sale
          outright_sale_deposit_value_check],
diff --git a/spec/models/form/sales/subsections/shared_ownership_scheme_spec.rb b/spec/models/form/sales/subsections/shared_ownership_scheme_spec.rb
index b2bfc41e8..e95579df3 100644
--- a/spec/models/form/sales/subsections/shared_ownership_scheme_spec.rb
+++ b/spec/models/form/sales/subsections/shared_ownership_scheme_spec.rb
@@ -23,6 +23,7 @@ RSpec.describe Form::Sales::Subsections::SharedOwnershipScheme, type: :model do
         buyer_previous
         previous_bedrooms
         about_price_shared_ownership
+        mortgage_used_shared_ownership
         mortgage_amount_shared_ownership
         about_deposit_with_discount
         about_deposit_shared_ownership
diff --git a/spec/models/form_handler_spec.rb b/spec/models/form_handler_spec.rb
index 861e1e5eb..83e1aa582 100644
--- a/spec/models/form_handler_spec.rb
+++ b/spec/models/form_handler_spec.rb
@@ -52,14 +52,14 @@ RSpec.describe FormHandler do
     it "is able to load a current sales form" do
       form = form_handler.get_form("current_sales")
       expect(form).to be_a(Form)
-      expect(form.pages.count).to eq(113)
+      expect(form.pages.count).to eq(116)
       expect(form.name).to eq("2022_2023_sales")
     end
 
     it "is able to load a previous sales form" do
       form = form_handler.get_form("previous_sales")
       expect(form).to be_a(Form)
-      expect(form.pages.count).to eq(113)
+      expect(form.pages.count).to eq(116)
       expect(form.name).to eq("2021_2022_sales")
     end
   end
diff --git a/spec/models/sales_log_spec.rb b/spec/models/sales_log_spec.rb
index 5942b3d84..ebfd7009d 100644
--- a/spec/models/sales_log_spec.rb
+++ b/spec/models/sales_log_spec.rb
@@ -92,18 +92,33 @@ RSpec.describe SalesLog, type: :model do
   end
 
   describe "derived variables" do
-    let!(:sales_log) do
-      described_class.create({
-        exdate: Time.gm(2022, 5, 4),
-      })
-    end
+    let(:sales_log) { FactoryBot.create(:sales_log, :completed) }
 
     it "correctly derives and saves exday, exmonth and exyear" do
+      sales_log.update!(exdate: Time.gm(2022, 5, 4))
       record_from_db = ActiveRecord::Base.connection.execute("select exday, exmonth, exyear from sales_logs where id=#{sales_log.id}").to_a[0]
       expect(record_from_db["exday"]).to eq(4)
       expect(record_from_db["exmonth"]).to eq(5)
       expect(record_from_db["exyear"]).to eq(2022)
     end
+
+    it "correctly derives and saves deposit for outright sales when no mortgage is used" do
+      sales_log.update!(value: 123_400, deposit: nil, mortgageused: 2, ownershipsch: 3, type: 10, companybuy: 1, jointpur: 1, jointmore: 1)
+      record_from_db = ActiveRecord::Base.connection.execute("select deposit from sales_logs where id=#{sales_log.id}").to_a[0]
+      expect(record_from_db["deposit"]).to eq(123_400)
+    end
+
+    it "does not derive deposit if the sale isn't outright" do
+      sales_log.update!(value: 123_400, deposit: nil, mortgageused: 2, ownershipsch: 2)
+      record_from_db = ActiveRecord::Base.connection.execute("select deposit from sales_logs where id=#{sales_log.id}").to_a[0]
+      expect(record_from_db["deposit"]).to eq(nil)
+    end
+
+    it "does not derive deposit if the mortgage is used" do
+      sales_log.update!(value: 123_400, deposit: nil, mortgageused: 1, ownershipsch: 3, type: 10, companybuy: 1, jointpur: 1, jointmore: 1)
+      record_from_db = ActiveRecord::Base.connection.execute("select deposit from sales_logs where id=#{sales_log.id}").to_a[0]
+      expect(record_from_db["deposit"]).to eq(nil)
+    end
   end
 
   context "when saving previous address" do