diff --git a/app/models/sales_log.rb b/app/models/sales_log.rb
index f6086a918..98517058e 100644
--- a/app/models/sales_log.rb
+++ b/app/models/sales_log.rb
@@ -279,11 +279,17 @@ class SalesLog < Log
     mortgage_amount + deposit_amount + cashdis_amount
   end
 
+  def value_times_equity
+    return unless value && equity
+
+    value * equity / 100
+  end
+
   def mortgage_deposit_and_discount_error_fields
     [
       "mortgage",
       "deposit",
-      cashdis.present? ? "discount" : nil,
+      cashdis.present? ? "cash discount" : nil,
     ].compact.to_sentence
   end
 
diff --git a/app/models/validations/sales/financial_validations.rb b/app/models/validations/sales/financial_validations.rb
index bc1ca95cf..59b84f7e3 100644
--- a/app/models/validations/sales/financial_validations.rb
+++ b/app/models/validations/sales/financial_validations.rb
@@ -101,7 +101,10 @@ module Validations::Sales::FinancialValidations
 
     if mortgage_value + record.deposit + record.cashdis != record.value * record.equity / 100
       %i[mortgage value deposit ownershipsch cashdis equity].each do |field|
-        record.errors.add field, I18n.t("validations.financial.shared_ownership_deposit", mortgage_deposit_and_discount_error_fields: record.mortgage_deposit_and_discount_error_fields, mortgage_deposit_and_discount_total: record.field_formatted_as_currency("mortgage_deposit_and_discount_total"))
+        record.errors.add field, I18n.t("validations.financial.shared_ownership_deposit",
+                                        mortgage_deposit_and_discount_error_fields: record.mortgage_deposit_and_discount_error_fields,
+                                        mortgage_deposit_and_discount_total: record.field_formatted_as_currency("mortgage_deposit_and_discount_total"),
+                                        value_times_equity: record.field_formatted_as_currency("value_times_equity"))
       end
     end
   end
diff --git a/config/locales/en.yml b/config/locales/en.yml
index eb2a17ce5..2a8d86951 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -433,7 +433,7 @@ en:
         under_min: "The minimum initial equity stake for this type of shared ownership sale is %{min_equity}%"
         over_max: "The maximum initial equity stake is %{max_equity}%"
       mortgage: "Mortgage value cannot be £0 if a mortgage was used for the purchase of this property"
-      shared_ownership_deposit: "You told us that the %{mortgage_deposit_and_discount_error_fields} add up to %{mortgage_deposit_and_discount_total}"
+      shared_ownership_deposit: "The %{mortgage_deposit_and_discount_error_fields} added together is %{mortgage_deposit_and_discount_total}. The value times the equity percentage is %{value_times_equity}. These figures should be the same"
 
     household:
       reasonable_preference_reason:
diff --git a/spec/models/validations/sales/financial_validations_spec.rb b/spec/models/validations/sales/financial_validations_spec.rb
index 873903c56..295b11c2c 100644
--- a/spec/models/validations/sales/financial_validations_spec.rb
+++ b/spec/models/validations/sales/financial_validations_spec.rb
@@ -393,11 +393,11 @@ RSpec.describe Validations::Sales::FinancialValidations do
         record.equity = 100
 
         financial_validator.validate_shared_ownership_deposit(record)
-        expect(record.errors["mortgage"]).to include("You told us that the mortgage, deposit, and discount add up to £2,000.00")
-        expect(record.errors["deposit"]).to include("You told us that the mortgage, deposit, and discount add up to £2,000.00")
-        expect(record.errors["cashdis"]).to include("You told us that the mortgage, deposit, and discount add up to £2,000.00")
-        expect(record.errors["value"]).to include("You told us that the mortgage, deposit, and discount add up to £2,000.00")
-        expect(record.errors["equity"]).to include("You told us that the mortgage, deposit, and discount add up to £2,000.00")
+        expect(record.errors["mortgage"]).to include("The mortgage, deposit, and cash discount added together is £2,000.00. The value times the equity percentage is £3,000.00. These figures should be the same")
+        expect(record.errors["deposit"]).to include("The mortgage, deposit, and cash discount added together is £2,000.00. The value times the equity percentage is £3,000.00. These figures should be the same")
+        expect(record.errors["cashdis"]).to include("The mortgage, deposit, and cash discount added together is £2,000.00. The value times the equity percentage is £3,000.00. These figures should be the same")
+        expect(record.errors["value"]).to include("The mortgage, deposit, and cash discount added together is £2,000.00. The value times the equity percentage is £3,000.00. These figures should be the same")
+        expect(record.errors["equity"]).to include("The mortgage, deposit, and cash discount added together is £2,000.00. The value times the equity percentage is £3,000.00. These figures should be the same")
       end
 
       it "does not add an error if no deposit is given" do
@@ -487,11 +487,11 @@ RSpec.describe Validations::Sales::FinancialValidations do
         record.equity = 100
 
         financial_validator.validate_shared_ownership_deposit(record)
-        expect(record.errors["mortgage"]).to include("You told us that the mortgage, deposit, and discount add up to £3,000.00")
-        expect(record.errors["deposit"]).to include("You told us that the mortgage, deposit, and discount add up to £3,000.00")
-        expect(record.errors["cashdis"]).to include("You told us that the mortgage, deposit, and discount add up to £3,000.00")
-        expect(record.errors["value"]).to include("You told us that the mortgage, deposit, and discount add up to £3,000.00")
-        expect(record.errors["equity"]).to include("You told us that the mortgage, deposit, and discount add up to £3,000.00")
+        expect(record.errors["mortgage"]).to include("The mortgage, deposit, and cash discount added together is £3,000.00. The value times the equity percentage is £4,323.00. These figures should be the same")
+        expect(record.errors["deposit"]).to include("The mortgage, deposit, and cash discount added together is £3,000.00. The value times the equity percentage is £4,323.00. These figures should be the same")
+        expect(record.errors["cashdis"]).to include("The mortgage, deposit, and cash discount added together is £3,000.00. The value times the equity percentage is £4,323.00. These figures should be the same")
+        expect(record.errors["value"]).to include("The mortgage, deposit, and cash discount added together is £3,000.00. The value times the equity percentage is £4,323.00. These figures should be the same")
+        expect(record.errors["equity"]).to include("The mortgage, deposit, and cash discount added together is £3,000.00. The value times the equity percentage is £4,323.00. These figures should be the same")
       end
     end