diff --git a/app/models/derived_variables/sales_log_variables.rb b/app/models/derived_variables/sales_log_variables.rb
index 2b3542813..88bad228f 100644
--- a/app/models/derived_variables/sales_log_variables.rb
+++ b/app/models/derived_variables/sales_log_variables.rb
@@ -1,5 +1,10 @@
 module DerivedVariables::SalesLogVariables
   def set_derived_fields!
     self.ethnic = 17 if ethnic_refused?
+    if exdate.present?
+      self.exday = exdate.day
+      self.exmonth = exdate.month
+      self.exyear = exdate.year
+    end
   end
 end
diff --git a/app/models/form/sales/pages/exchange_date.rb b/app/models/form/sales/pages/exchange_date.rb
new file mode 100644
index 000000000..59e23ab01
--- /dev/null
+++ b/app/models/form/sales/pages/exchange_date.rb
@@ -0,0 +1,18 @@
+class Form::Sales::Pages::ExchangeDate < ::Form::Page
+  def initialize(id, hsh, subsection)
+    super
+    @id = "exchange_contracts"
+    @header = ""
+    @description = ""
+    @subsection = subsection
+    @depends_on = [{
+      "resale" => 2,
+    }]
+  end
+
+  def questions
+    @questions ||= [
+      Form::Sales::Questions::ExchangeDate.new(nil, nil, self),
+    ]
+  end
+end
diff --git a/app/models/form/sales/questions/exchange_date.rb b/app/models/form/sales/questions/exchange_date.rb
new file mode 100644
index 000000000..2c726e441
--- /dev/null
+++ b/app/models/form/sales/questions/exchange_date.rb
@@ -0,0 +1,10 @@
+class Form::Sales::Questions::ExchangeDate < ::Form::Question
+  def initialize(id, hsh, page)
+    super
+    @id = "exdate"
+    @check_answer_label = "Exchange of contracts date"
+    @header = "What is the exchange of contracts date?"
+    @type = "date"
+    @page = page
+  end
+end
diff --git a/app/models/form/sales/subsections/shared_ownership_scheme.rb b/app/models/form/sales/subsections/shared_ownership_scheme.rb
index fda791298..f4b02a9e5 100644
--- a/app/models/form/sales/subsections/shared_ownership_scheme.rb
+++ b/app/models/form/sales/subsections/shared_ownership_scheme.rb
@@ -13,6 +13,7 @@ class Form::Sales::Subsections::SharedOwnershipScheme < ::Form::Subsection
       Form::Sales::Pages::AboutStaircase.new(nil, nil, self),
       Form::Sales::Pages::PreviousBedrooms.new(nil, nil, self),
       Form::Sales::Pages::MonthlyRent.new(nil, nil, self),
+      Form::Sales::Pages::ExchangeDate.new(nil, nil, self),
     ]
   end
 
diff --git a/db/migrate/20221221122233_add_exchange_contracts_to_sales.rb b/db/migrate/20221221122233_add_exchange_contracts_to_sales.rb
new file mode 100644
index 000000000..51976d7ca
--- /dev/null
+++ b/db/migrate/20221221122233_add_exchange_contracts_to_sales.rb
@@ -0,0 +1,11 @@
+class AddExchangeContractsToSales < ActiveRecord::Migration[7.0]
+  def change
+    change_table :sales_logs, bulk: true do |t|
+      t.column :exdate, :datetime
+      t.column :exday, :integer
+      t.column :exmonth, :integer
+      t.column :exyear, :integer
+      t.column :resale, :integer
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 455c8927d..d616fd6d5 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[7.0].define(version: 2022_12_21_105502) do
+ActiveRecord::Schema[7.0].define(version: 2022_12_21_122233) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -420,6 +420,11 @@ ActiveRecord::Schema[7.0].define(version: 2022_12_21_105502) do
     t.integer "stairbought"
     t.integer "stairowned"
     t.decimal "mrent", precision: 10, scale: 2
+    t.datetime "exdate", precision: nil
+    t.integer "exday"
+    t.integer "exmonth"
+    t.integer "exyear"
+    t.integer "resale"
     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/models/form/sales/pages/exchange_date_spec.rb b/spec/models/form/sales/pages/exchange_date_spec.rb
new file mode 100644
index 000000000..21c4c3aab
--- /dev/null
+++ b/spec/models/form/sales/pages/exchange_date_spec.rb
@@ -0,0 +1,35 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Pages::ExchangeDate, type: :model do
+  subject(:page) { described_class.new(page_id, page_definition, subsection) }
+
+  let(:page_id) { nil }
+  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[exdate])
+  end
+
+  it "has the correct id" do
+    expect(page.id).to eq("exchange_contracts")
+  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
+
+  it "has the correct depends_on" do
+    expect(page.depends_on).to eq([{
+      "resale" => 2,
+    }])
+  end
+end
diff --git a/spec/models/form/sales/questions/exchange_date_spec.rb b/spec/models/form/sales/questions/exchange_date_spec.rb
new file mode 100644
index 000000000..53d5a8975
--- /dev/null
+++ b/spec/models/form/sales/questions/exchange_date_spec.rb
@@ -0,0 +1,33 @@
+require "rails_helper"
+
+RSpec.describe Form::Sales::Questions::ExchangeDate, 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("exdate")
+  end
+
+  it "has the correct header" do
+    expect(question.header).to eq("What is the exchange of contracts date?")
+  end
+
+  it "has the correct check_answer_label" do
+    expect(question.check_answer_label).to eq("Exchange of contracts date")
+  end
+
+  it "has the correct type" do
+    expect(question.type).to eq("date")
+  end
+
+  it "is not marked as derived" do
+    expect(question.derived?).to be false
+  end
+end
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 3a4e654b4..644485ca5 100644
--- a/spec/models/form/sales/subsections/shared_ownership_scheme_spec.rb
+++ b/spec/models/form/sales/subsections/shared_ownership_scheme_spec.rb
@@ -18,6 +18,7 @@ RSpec.describe Form::Sales::Subsections::SharedOwnershipScheme, type: :model do
         about_staircasing
         previous_bedrooms
         monthly_rent
+        exchange_contracts
       ],
     )
   end
diff --git a/spec/models/form_handler_spec.rb b/spec/models/form_handler_spec.rb
index e69ffc524..d2bcd26f0 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(72)
+      expect(form.pages.count).to eq(73)
       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(72)
+      expect(form.pages.count).to eq(73)
       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 3ee033971..9e618a10e 100644
--- a/spec/models/sales_log_spec.rb
+++ b/spec/models/sales_log_spec.rb
@@ -90,4 +90,19 @@ RSpec.describe SalesLog, type: :model do
       expect(described_class.filter_by_organisation([organisation_3]).count).to eq(0)
     end
   end
+
+  describe "derived variables" do
+    let!(:sales_log) do
+      described_class.create({
+        exdate: Time.gm(2022, 5, 4),
+      })
+    end
+
+    it "correctly derives and saves exday, exmonth and exyear" do
+      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
+  end
 end