diff --git a/app/models/form/sales/questions/equity.rb b/app/models/form/sales/questions/equity.rb
index dd1a14227..4aae785b8 100644
--- a/app/models/form/sales/questions/equity.rb
+++ b/app/models/form/sales/questions/equity.rb
@@ -6,7 +6,7 @@ class Form::Sales::Questions::Equity < ::Form::Question
     @type = "numeric"
     @min = 0
     @max = 100
-    @step = 1
+    @step = 0.1
     @width = 5
     @suffix = "%"
     @question_number = QUESTION_NUMBER_FROM_YEAR[form.start_date.year] || QUESTION_NUMBER_FROM_YEAR[QUESTION_NUMBER_FROM_YEAR.keys.max]
diff --git a/app/models/form/sales/questions/staircase_bought.rb b/app/models/form/sales/questions/staircase_bought.rb
index 8a3e88347..a9a3d6f23 100644
--- a/app/models/form/sales/questions/staircase_bought.rb
+++ b/app/models/form/sales/questions/staircase_bought.rb
@@ -7,7 +7,7 @@ class Form::Sales::Questions::StaircaseBought < ::Form::Question
     @width = 5
     @min = 0
     @max = 100
-    @step = 1
+    @step = 0.1
     @suffix = "%"
     @question_number = QUESTION_NUMBER_FROM_YEAR[form.start_date.year] || QUESTION_NUMBER_FROM_YEAR[QUESTION_NUMBER_FROM_YEAR.keys.max]
     @top_guidance_partial = "financial_calculations_shared_ownership"
diff --git a/app/models/form/sales/questions/staircase_owned.rb b/app/models/form/sales/questions/staircase_owned.rb
index dc8daaf20..e0ec8865c 100644
--- a/app/models/form/sales/questions/staircase_owned.rb
+++ b/app/models/form/sales/questions/staircase_owned.rb
@@ -7,7 +7,7 @@ class Form::Sales::Questions::StaircaseOwned < ::Form::Question
     @width = 5
     @min = 0
     @max = 100
-    @step = 1
+    @step = 0.1
     @suffix = "%"
     @question_number = QUESTION_NUMBER_FROM_YEAR[form.start_date.year] || QUESTION_NUMBER_FROM_YEAR[QUESTION_NUMBER_FROM_YEAR.keys.max]
   end
diff --git a/db/migrate/20241031102744_allow_decimal_stairbought_and_stairowned.rb b/db/migrate/20241031102744_allow_decimal_stairbought_and_stairowned.rb
new file mode 100644
index 000000000..44154d630
--- /dev/null
+++ b/db/migrate/20241031102744_allow_decimal_stairbought_and_stairowned.rb
@@ -0,0 +1,15 @@
+class AllowDecimalStairboughtAndStairowned < ActiveRecord::Migration[7.0]
+  def up
+    change_table :sales_logs, bulk: true do |t|
+      t.change :stairbought, :decimal
+      t.change :stairowned, :decimal
+    end
+  end
+
+  def down
+    change_table :sales_logs, bulk: true do |t|
+      t.change :stairbought, :integer
+      t.change :stairowned, :integer
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 84bf048af..ef635628c 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: 2024_10_11_112158) do
+ActiveRecord::Schema[7.0].define(version: 2024_10_31_102744) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -627,8 +627,8 @@ ActiveRecord::Schema[7.0].define(version: 2024_10_11_112158) do
     t.integer "deposit_value_check"
     t.integer "frombeds"
     t.integer "staircase"
-    t.integer "stairbought"
-    t.integer "stairowned"
+    t.decimal "stairbought"
+    t.decimal "stairowned"
     t.decimal "mrent", precision: 10, scale: 2
     t.datetime "exdate"
     t.integer "exday"
diff --git a/spec/models/form_spec.rb b/spec/models/form_spec.rb
index bb03cef59..d3dc7e21f 100644
--- a/spec/models/form_spec.rb
+++ b/spec/models/form_spec.rb
@@ -282,10 +282,10 @@ RSpec.describe Form, type: :model do
 
       context "and attribute Y is changed such that it is no longer routed to" do
         it "the value of this attribute is cleared" do
-          expect(log.stairbought).to be 25
+          expect(log.stairbought).to eq 25
           log.staircase = 2
           log.form.reset_not_routed_questions_and_invalid_answers(log)
-          expect(log.stairbought).to be nil
+          expect(log.stairbought).to be_nil
         end
       end
     end
diff --git a/spec/models/validations/sales/financial_validations_spec.rb b/spec/models/validations/sales/financial_validations_spec.rb
index 7b7749003..cb55615c0 100644
--- a/spec/models/validations/sales/financial_validations_spec.rb
+++ b/spec/models/validations/sales/financial_validations_spec.rb
@@ -436,25 +436,25 @@ RSpec.describe Validations::Sales::FinancialValidations do
       let(:saledate) { Time.zone.local(2024, 4, 1) }
 
       it "adds errors if equity is more than stairowned - stairbought for joint purchase" do
-        record.stairbought = 2
+        record.stairbought = 2.5
         record.stairowned = 3
         record.equity = 2
         record.jointpur = 1
         financial_validator.validate_equity_less_than_staircase_difference(record)
-        expect(record.errors["equity"]).to include(I18n.t("validations.sales.financial.equity.equity_over_stairowned_minus_stairbought.joint_purchase", equity: 2, staircase_difference: 1))
-        expect(record.errors["stairowned"]).to include(I18n.t("validations.sales.financial.stairowned.equity_over_stairowned_minus_stairbought.joint_purchase", equity: 2, staircase_difference: 1))
-        expect(record.errors["stairbought"]).to include(I18n.t("validations.sales.financial.stairbought.equity_over_stairowned_minus_stairbought.joint_purchase", equity: 2, staircase_difference: 1))
+        expect(record.errors["equity"]).to include(I18n.t("validations.sales.financial.equity.equity_over_stairowned_minus_stairbought.joint_purchase", equity: 2, staircase_difference: 0.5))
+        expect(record.errors["stairowned"]).to include(I18n.t("validations.sales.financial.stairowned.equity_over_stairowned_minus_stairbought.joint_purchase", equity: 2, staircase_difference: 0.5))
+        expect(record.errors["stairbought"]).to include(I18n.t("validations.sales.financial.stairbought.equity_over_stairowned_minus_stairbought.joint_purchase", equity: 2, staircase_difference: 0.5))
       end
 
       it "adds errors if equity is more than stairowned - stairbought for non joint purchase" do
         record.stairbought = 2
         record.stairowned = 3
-        record.equity = 2
+        record.equity = 2.5
         record.jointpur = 2
         financial_validator.validate_equity_less_than_staircase_difference(record)
-        expect(record.errors["equity"]).to include(I18n.t("validations.sales.financial.equity.equity_over_stairowned_minus_stairbought.not_joint_purchase", equity: 2, staircase_difference: 1))
-        expect(record.errors["stairowned"]).to include(I18n.t("validations.sales.financial.stairowned.equity_over_stairowned_minus_stairbought.not_joint_purchase", equity: 2, staircase_difference: 1))
-        expect(record.errors["stairbought"]).to include(I18n.t("validations.sales.financial.stairbought.equity_over_stairowned_minus_stairbought.not_joint_purchase", equity: 2, staircase_difference: 1))
+        expect(record.errors["equity"]).to include(I18n.t("validations.sales.financial.equity.equity_over_stairowned_minus_stairbought.not_joint_purchase", equity: 2.5, staircase_difference: 1.0))
+        expect(record.errors["stairowned"]).to include(I18n.t("validations.sales.financial.stairowned.equity_over_stairowned_minus_stairbought.not_joint_purchase", equity: 2.5, staircase_difference: 1.0))
+        expect(record.errors["stairbought"]).to include(I18n.t("validations.sales.financial.stairbought.equity_over_stairowned_minus_stairbought.not_joint_purchase", equity: 2.5, staircase_difference: 1.0))
       end
 
       it "does not add errors if equity is less than stairowned - stairbought" do
diff --git a/spec/models/validations/sales/sale_information_validations_spec.rb b/spec/models/validations/sales/sale_information_validations_spec.rb
index 1f20163d3..36dadc345 100644
--- a/spec/models/validations/sales/sale_information_validations_spec.rb
+++ b/spec/models/validations/sales/sale_information_validations_spec.rb
@@ -1087,12 +1087,11 @@ RSpec.describe Validations::Sales::SaleInformationValidations do
 
           it "adds an error" do
             sale_information_validator.validate_staircasing_mortgage(record)
-            expect(record.errors["mortgage"]).to include("The mortgage (£10,000.00) and cash deposit (£5,000.00) added together is £15,000.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought is £8,400.00.</br></br>These two amounts should be the same.")
-            expect(record.errors["value"]).to include("The mortgage (£10,000.00) and cash deposit (£5,000.00) added together is £15,000.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought is £8,400.00.</br></br>These two amounts should be the same.")
-            expect(record.errors["deposit"]).to include("The mortgage (£10,000.00) and cash deposit (£5,000.00) added together is £15,000.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought is £8,400.00.</br></br>These two amounts should be the same.")
-            expect(record.errors["stairbought"]).to include("The mortgage (£10,000.00) and cash deposit (£5,000.00) added together is £15,000.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought is £8,400.00.</br></br>These two amounts should be the same.")
-            expect(record.errors["type"]).to include("The mortgage (£10,000.00) and cash deposit (£5,000.00) added together is £15,000.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought is £8,400.00.</br></br>These two amounts should be the same.")
-            expect(record.errors["cashdis"]).not_to include("The mortgage (£10,000.00) and cash deposit (£5,000.00) added together is £15,000.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought is £8,400.00.</br></br>These two amounts should be the same.")
+            expect(record.errors["mortgage"]).to include(I18n.t("validations.sales.sale_information.mortgage.staircasing_mortgage.mortgage_used", mortgage: "£10,000.00", deposit: "£5,000.00", mortgage_and_deposit_total: "£15,000.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00"))
+            expect(record.errors["value"]).to include(I18n.t("validations.sales.sale_information.value.staircasing_mortgage.mortgage_used", mortgage: "£10,000.00", deposit: "£5,000.00", mortgage_and_deposit_total: "£15,000.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00"))
+            expect(record.errors["deposit"]).to include(I18n.t("validations.sales.sale_information.deposit.staircasing_mortgage.mortgage_used", mortgage: "£10,000.00", deposit: "£5,000.00", mortgage_and_deposit_total: "£15,000.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00"))
+            expect(record.errors["stairbought"]).to include(I18n.t("validations.sales.sale_information.stairbought.staircasing_mortgage.mortgage_used", mortgage: "£10,000.00", deposit: "£5,000.00", mortgage_and_deposit_total: "£15,000.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00"))
+            expect(record.errors["type"]).to include(I18n.t("validations.sales.sale_information.type.staircasing_mortgage.mortgage_used", mortgage: "£10,000.00", deposit: "£5,000.00", mortgage_and_deposit_total: "£15,000.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00"))
           end
 
           context "and it is a social homebuy" do
@@ -1103,12 +1102,12 @@ RSpec.describe Validations::Sales::SaleInformationValidations do
 
             it "adds an error" do
               sale_information_validator.validate_staircasing_mortgage(record)
-              expect(record.errors["mortgage"]).to include("The mortgage amount (£10,000.00), cash deposit (£5,000.00), and cash discount (£200.00) added together is £15,200.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought (28%) is £8,400.00.</br></br>These two amounts should be the same.")
-              expect(record.errors["value"]).to include("The mortgage amount (£10,000.00), cash deposit (£5,000.00), and cash discount (£200.00) added together is £15,200.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought (28%) is £8,400.00.</br></br>These two amounts should be the same.")
-              expect(record.errors["deposit"]).to include("The mortgage amount (£10,000.00), cash deposit (£5,000.00), and cash discount (£200.00) added together is £15,200.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought (28%) is £8,400.00.</br></br>These two amounts should be the same.")
-              expect(record.errors["stairbought"]).to include("The mortgage amount (£10,000.00), cash deposit (£5,000.00), and cash discount (£200.00) added together is £15,200.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought (28%) is £8,400.00.</br></br>These two amounts should be the same.")
-              expect(record.errors["cashdis"]).to include("The mortgage amount (£10,000.00), cash deposit (£5,000.00), and cash discount (£200.00) added together is £15,200.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought (28%) is £8,400.00.</br></br>These two amounts should be the same.")
-              expect(record.errors["type"]).to include("The mortgage amount (£10,000.00), cash deposit (£5,000.00), and cash discount (£200.00) added together is £15,200.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought (28%) is £8,400.00.</br></br>These two amounts should be the same.")
+              expect(record.errors["mortgage"]).to include(I18n.t("validations.sales.sale_information.mortgage.staircasing_mortgage.mortgage_used_socialhomebuy", mortgage: "£10,000.00", deposit: "£5,000.00", cashdis: "£200.00", mortgage_deposit_and_discount_total: "£15,200.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00", stairbought: "28.0%"))
+              expect(record.errors["value"]).to include(I18n.t("validations.sales.sale_information.value.staircasing_mortgage.mortgage_used_socialhomebuy", mortgage: "£10,000.00", deposit: "£5,000.00", cashdis: "£200.00", mortgage_deposit_and_discount_total: "£15,200.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00", stairbought: "28.0%"))
+              expect(record.errors["deposit"]).to include(I18n.t("validations.sales.sale_information.deposit.staircasing_mortgage.mortgage_used_socialhomebuy", mortgage: "£10,000.00", deposit: "£5,000.00", cashdis: "£200.00", mortgage_deposit_and_discount_total: "£15,200.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00", stairbought: "28.0%"))
+              expect(record.errors["stairbought"]).to include(I18n.t("validations.sales.sale_information.stairbought.staircasing_mortgage.mortgage_used_socialhomebuy", mortgage: "£10,000.00", deposit: "£5,000.00", cashdis: "£200.00", mortgage_deposit_and_discount_total: "£15,200.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00", stairbought: "28.0%"))
+              expect(record.errors["cashdis"]).to include(I18n.t("validations.sales.sale_information.cashdis.staircasing_mortgage.mortgage_used_socialhomebuy", mortgage: "£10,000.00", deposit: "£5,000.00", cashdis: "£200.00", mortgage_deposit_and_discount_total: "£15,200.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00", stairbought: "28.0%"))
+              expect(record.errors["type"]).to include(I18n.t("validations.sales.sale_information.type.staircasing_mortgage.mortgage_used_socialhomebuy", mortgage: "£10,000.00", deposit: "£5,000.00", cashdis: "£200.00", mortgage_deposit_and_discount_total: "£15,200.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00", stairbought: "28.0%"))
             end
           end
 
@@ -1206,12 +1205,11 @@ RSpec.describe Validations::Sales::SaleInformationValidations do
 
             it "adds an error" do
               sale_information_validator.validate_staircasing_mortgage(record)
-              expect(record.errors["mortgageused"]).to include("The cash deposit is £5,000.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought is £8,400.00.</br></br>These two amounts should be the same.")
-              expect(record.errors["value"]).to include("The cash deposit is £5,000.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought is £8,400.00.</br></br>These two amounts should be the same.")
-              expect(record.errors["deposit"]).to include("The cash deposit is £5,000.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought is £8,400.00.</br></br>These two amounts should be the same.")
-              expect(record.errors["stairbought"]).to include("The cash deposit is £5,000.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought is £8,400.00.</br></br>These two amounts should be the same.")
-              expect(record.errors["type"]).to include("The cash deposit is £5,000.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought is £8,400.00.</br></br>These two amounts should be the same.")
-              expect(record.errors["cashdis"]).not_to include("The cash deposit is £5,000.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought is £8,400.00.</br></br>These two amounts should be the same.")
+              expect(record.errors["mortgageused"]).to include(I18n.t("validations.sales.sale_information.mortgageused.staircasing_mortgage.mortgage_not_used", deposit: "£5,000.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00"))
+              expect(record.errors["value"]).to include(I18n.t("validations.sales.sale_information.value.staircasing_mortgage.mortgage_not_used", deposit: "£5,000.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00"))
+              expect(record.errors["deposit"]).to include(I18n.t("validations.sales.sale_information.deposit.staircasing_mortgage.mortgage_not_used", deposit: "£5,000.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00"))
+              expect(record.errors["stairbought"]).to include(I18n.t("validations.sales.sale_information.stairbought.staircasing_mortgage.mortgage_not_used", deposit: "£5,000.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00"))
+              expect(record.errors["type"]).to include(I18n.t("validations.sales.sale_information.type.staircasing_mortgage.mortgage_not_used", deposit: "£5,000.00", value: "£30,000.00", stairbought_part_of_value: "£8,400.00"))
             end
 
             context "and it is a social homebuy" do
@@ -1222,12 +1220,12 @@ RSpec.describe Validations::Sales::SaleInformationValidations do
 
               it "adds an error" do
                 sale_information_validator.validate_staircasing_mortgage(record)
-                expect(record.errors["mortgageused"]).to include("The cash deposit (£5,000.00) and cash discount (£200.00) added together is £5,200.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought (28%) is £8,400.00.</br></br>These two amounts should be the same.")
-                expect(record.errors["value"]).to include("The cash deposit (£5,000.00) and cash discount (£200.00) added together is £5,200.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought (28%) is £8,400.00.</br></br>These two amounts should be the same.")
-                expect(record.errors["deposit"]).to include("The cash deposit (£5,000.00) and cash discount (£200.00) added together is £5,200.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought (28%) is £8,400.00.</br></br>These two amounts should be the same.")
-                expect(record.errors["stairbought"]).to include("The cash deposit (£5,000.00) and cash discount (£200.00) added together is £5,200.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought (28%) is £8,400.00.</br></br>These two amounts should be the same.")
-                expect(record.errors["cashdis"]).to include("The cash deposit (£5,000.00) and cash discount (£200.00) added together is £5,200.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought (28%) is £8,400.00.</br></br>These two amounts should be the same.")
-                expect(record.errors["type"]).to include("The cash deposit (£5,000.00) and cash discount (£200.00) added together is £5,200.00.</br></br>The full purchase price (£30,000.00) multiplied by the percentage bought (28%) is £8,400.00.</br></br>These two amounts should be the same.")
+                expect(record.errors["mortgageused"]).to include(I18n.t("validations.sales.sale_information.mortgageused.staircasing_mortgage.mortgage_not_used_socialhomebuy", deposit: "£5,000.00", cashdis: "£200.00", deposit_and_discount_total: "£5,200.00", value: "£30,000.00", stairbought: "28.0%", stairbought_part_of_value: "£8,400.00"))
+                expect(record.errors["value"]).to include(I18n.t("validations.sales.sale_information.value.staircasing_mortgage.mortgage_not_used_socialhomebuy", deposit: "£5,000.00", cashdis: "£200.00", deposit_and_discount_total: "£5,200.00", value: "£30,000.00", stairbought: "28.0%", stairbought_part_of_value: "£8,400.00"))
+                expect(record.errors["deposit"]).to include(I18n.t("validations.sales.sale_information.deposit.staircasing_mortgage.mortgage_not_used_socialhomebuy", deposit: "£5,000.00", cashdis: "£200.00", deposit_and_discount_total: "£5,200.00", value: "£30,000.00", stairbought: "28.0%", stairbought_part_of_value: "£8,400.00"))
+                expect(record.errors["stairbought"]).to include(I18n.t("validations.sales.sale_information.stairbought.staircasing_mortgage.mortgage_not_used_socialhomebuy", deposit: "£5,000.00", cashdis: "£200.00", deposit_and_discount_total: "£5,200.00", value: "£30,000.00", stairbought: "28.0%", stairbought_part_of_value: "£8,400.00"))
+                expect(record.errors["cashdis"]).to include(I18n.t("validations.sales.sale_information.cashdis.staircasing_mortgage.mortgage_not_used_socialhomebuy", deposit: "£5,000.00", cashdis: "£200.00", deposit_and_discount_total: "£5,200.00", value: "£30,000.00", stairbought: "28.0%", stairbought_part_of_value: "£8,400.00"))
+                expect(record.errors["type"]).to include(I18n.t("validations.sales.sale_information.type.staircasing_mortgage.mortgage_not_used_socialhomebuy", deposit: "£5,000.00", cashdis: "£200.00", deposit_and_discount_total: "£5,200.00", value: "£30,000.00", stairbought: "28.0%", stairbought_part_of_value: "£8,400.00"))
               end
             end
 
diff --git a/spec/services/bulk_upload/sales/year2024/row_parser_spec.rb b/spec/services/bulk_upload/sales/year2024/row_parser_spec.rb
index 4844ce490..e4e2eb6f5 100644
--- a/spec/services/bulk_upload/sales/year2024/row_parser_spec.rb
+++ b/spec/services/bulk_upload/sales/year2024/row_parser_spec.rb
@@ -1393,9 +1393,9 @@ RSpec.describe BulkUpload::Sales::Year2024::RowParser do
 
         it "does not add errors and sets mortgage used to 3" do
           parser.valid?
-          expect(parser.log.mortgageused).to be(3)
-          expect(parser.log.stairowned).to be(100)
-          expect(parser.log.deposit).to be(nil)
+          expect(parser.log.mortgageused).to eq(3)
+          expect(parser.log.stairowned).to eq(100)
+          expect(parser.log.deposit).to be_nil
           expect(parser.errors[:field_103]).to be_empty
           expect(parser.errors[:field_109]).to be_empty
         end