diff --git a/app/models/validations/sales/sale_information_validations.rb b/app/models/validations/sales/sale_information_validations.rb
index 5b036580d..54d49b7e0 100644
--- a/app/models/validations/sales/sale_information_validations.rb
+++ b/app/models/validations/sales/sale_information_validations.rb
@@ -55,4 +55,13 @@ module Validations::Sales::SaleInformationValidations
       record.errors.add :type, I18n.t("validations.sale_information.monthly_rent.higher_than_expected")
     end
   end
+
+  def validate_grant_amount(record)
+    return unless record.saledate && record.form.start_year_after_2024?
+    return unless record.grant && (record.type == 8 || record.type == 21)
+
+    unless record.grant.between?(9_000, 16_000)
+      record.errors.add :grant, I18n.t("validations.sale_information.grant.out_of_range")
+    end
+  end
 end
diff --git a/app/models/validations/sales/soft_validations.rb b/app/models/validations/sales/soft_validations.rb
index fce544754..ae9ee66cc 100644
--- a/app/models/validations/sales/soft_validations.rb
+++ b/app/models/validations/sales/soft_validations.rb
@@ -116,7 +116,8 @@ module Validations::Sales::SoftValidations
   end
 
   def grant_outside_common_range?
-    return unless grant
+    return unless grant && type && saledate
+    return if form.start_year_after_2024? && (type == 21 || type == 8)
 
     !grant.between?(9_000, 16_000)
   end
diff --git a/config/locales/en.yml b/config/locales/en.yml
index b9638ba94..7fc5f9d57 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -615,6 +615,8 @@ en:
       discounted_ownership_value: "The mortgage, deposit, and grant when added together is %{mortgage_deposit_and_grant_total}, and the purchase purchase price times by the discount is %{value_with_discount}. These figures should be the same"
       monthly_rent:
         higher_than_expected: "Basic monthly rent must be between £0.00 and £9,999.00"
+      grant:
+        out_of_range: "Loan, grants or subsidies must be between £9,000 and £16,000"
     merge_request:
       organisation_part_of_another_merge: "This organisation is part of another merge - select a different one"
       organisation_not_selected: "Select an organisation from the search list"
diff --git a/spec/models/validations/sales/sale_information_validations_spec.rb b/spec/models/validations/sales/sale_information_validations_spec.rb
index 392686ac7..c890afed1 100644
--- a/spec/models/validations/sales/sale_information_validations_spec.rb
+++ b/spec/models/validations/sales/sale_information_validations_spec.rb
@@ -467,4 +467,76 @@ RSpec.describe Validations::Sales::SaleInformationValidations do
       end
     end
   end
+
+  describe "#validate_grant_amount" do
+    context "when within permitted bounds" do
+      let(:record) { build(:sales_log, grant: 10_000, saledate: Time.zone.local(2024, 4, 5)) }
+
+      it "does not add an error" do
+        sale_information_validator.validate_grant_amount(record)
+
+        expect(record.errors).not_to be_present
+      end
+    end
+
+    context "when over the max" do
+      let(:record) { build(:sales_log, type: 8, grant: 17_000, saledate: Time.zone.local(2024, 4, 5)) }
+
+      it "adds an error" do
+        sale_information_validator.validate_grant_amount(record)
+
+        expect(record.errors[:grant]).to include("Loan, grants or subsidies must be between £9,000 and £16,000")
+      end
+    end
+
+    context "when under the min" do
+      let(:record) { build(:sales_log, type: 21, grant: 3, saledate: Time.zone.local(2024, 4, 5)) }
+
+      it "adds an error" do
+        sale_information_validator.validate_grant_amount(record)
+
+        expect(record.errors[:grant]).to include("Loan, grants or subsidies must be between £9,000 and £16,000")
+      end
+    end
+
+    context "when grant is blank" do
+      let(:record) { build(:sales_log, type: 21, grant: nil, saledate: Time.zone.local(2024, 4, 5)) }
+
+      it "does not add an error" do
+        sale_information_validator.validate_grant_amount(record)
+
+        expect(record.errors).not_to be_present
+      end
+    end
+
+    context "when over the max and type is not RTA of social homebuy" do
+      let(:record) { build(:sales_log, type: 9, grant: 17_000, saledate: Time.zone.local(2024, 4, 5)) }
+
+      it "does not add an error" do
+        sale_information_validator.validate_grant_amount(record)
+
+        expect(record.errors).not_to be_present
+      end
+    end
+
+    context "when under the min and type is not RTA of social homebuy" do
+      let(:record) { build(:sales_log, type: 9, grant: 17_000, saledate: Time.zone.local(2024, 4, 5)) }
+
+      it "does not add error" do
+        sale_information_validator.validate_grant_amount(record)
+
+        expect(record.errors).not_to be_present
+      end
+    end
+
+    context "with log before 2024/25 collection" do
+      let(:record) { build(:sales_log, type: 8, grant: 3, saledate: Time.zone.local(2023, 4, 5)) }
+
+      it "does not add an error" do
+        sale_information_validator.validate_grant_amount(record)
+
+        expect(record.errors).not_to be_present
+      end
+    end
+  end
 end
diff --git a/spec/models/validations/sales/soft_validations_spec.rb b/spec/models/validations/sales/soft_validations_spec.rb
index 8718eee86..e417fbd8e 100644
--- a/spec/models/validations/sales/soft_validations_spec.rb
+++ b/spec/models/validations/sales/soft_validations_spec.rb
@@ -660,21 +660,51 @@ RSpec.describe Validations::Sales::SoftValidations do
   describe "#grant_outside_common_range?" do
     it "returns true if grant is below 9000" do
       record.grant = 1_000
+      record.type = 9
+      record.saledate = Time.zone.local(2024, 1, 1)
 
       expect(record).to be_grant_outside_common_range
     end
 
     it "returns true if grant is above 16000" do
       record.grant = 100_000
+      record.type = 9
+      record.saledate = Time.zone.local(2024, 1, 1)
 
       expect(record).to be_grant_outside_common_range
     end
 
     it "returns false if grant is within expected range" do
       record.grant = 10_000
+      record.type = 9
+      record.saledate = Time.zone.local(2024, 1, 1)
 
       expect(record).not_to be_grant_outside_common_range
     end
+
+    it "returns false for logs after 2024 with RTA" do
+      record.grant = 100_000
+      record.type = 8
+      record.saledate = Time.zone.local(2025, 1, 1)
+
+      expect(record).not_to be_grant_outside_common_range
+    end
+
+    it "returns false for logs after 2024 with socialBuy" do
+      record.grant = 100_000
+      record.type = 21
+      record.saledate = Time.zone.local(2025, 1, 1)
+
+      expect(record).not_to be_grant_outside_common_range
+    end
+
+    it "returns true for logs after 2024 with other type" do
+      record.grant = 100_000
+      record.type = 9
+      record.saledate = Time.zone.local(2025, 1, 1)
+
+      expect(record).to be_grant_outside_common_range
+    end
   end
 
   describe "#staircase_bought_above_fifty" do