diff --git a/app/models/validations/sales/sale_information_validations.rb b/app/models/validations/sales/sale_information_validations.rb
index a38cf1b0c..528a9a256 100644
--- a/app/models/validations/sales/sale_information_validations.rb
+++ b/app/models/validations/sales/sale_information_validations.rb
@@ -55,11 +55,11 @@ module Validations::Sales::SaleInformationValidations
       record.errors.add :lasttransaction, I18n.t("validations.sales.sale_information.lasttransaction.must_be_after_1980")
     end
 
-    if record.saledate.present? && record.lasttransaction > record.saledate
+    if record.saledate.present? && record.lasttransaction >= record.saledate
       record.errors.add :lasttransaction, I18n.t("validations.sales.sale_information.lasttransaction.must_be_before_saledate")
       record.errors.add :saledate, :skip_bu_error, message: I18n.t("validations.sales.sale_information.saledate.must_be_after_last_transaction_date")
     end
-    if record.initialpurchase.present? && record.lasttransaction < record.initialpurchase
+    if record.initialpurchase.present? && record.lasttransaction <= record.initialpurchase
       record.errors.add :initialpurchase, I18n.t("validations.sales.sale_information.initialpurchase.must_be_before_last_transaction")
       record.errors.add :lasttransaction, I18n.t("validations.sales.sale_information.lasttransaction.must_be_after_initial_purchase")
     end
diff --git a/spec/models/validations/sales/sale_information_validations_spec.rb b/spec/models/validations/sales/sale_information_validations_spec.rb
index efbf6bd67..4227a0dbf 100644
--- a/spec/models/validations/sales/sale_information_validations_spec.rb
+++ b/spec/models/validations/sales/sale_information_validations_spec.rb
@@ -318,10 +318,11 @@ RSpec.describe Validations::Sales::SaleInformationValidations do
     context "when last transaction date == saledate" do
       let(:record) { build(:sales_log, lasttransaction: current_collection_start_date, saledate: current_collection_start_date) }
 
-      it "does not add an error" do
+      it "adds error" do
         sale_information_validator.validate_staircasing_last_transaction_date(record)
 
-        expect(record.errors[:lasttransaction]).not_to be_present
+        expect(record.errors[:lasttransaction]).to eq([I18n.t("validations.sales.sale_information.lasttransaction.must_be_before_saledate")])
+        expect(record.errors[:saledate]).to eq([I18n.t("validations.sales.sale_information.saledate.must_be_after_last_transaction_date")])
       end
     end
 
@@ -349,10 +350,11 @@ RSpec.describe Validations::Sales::SaleInformationValidations do
     context "when last transaction date == initial purchase date" do
       let(:record) { build(:sales_log, lasttransaction: current_collection_start_date, initialpurchase: current_collection_start_date) }
 
-      it "does not add an error" do
+      it "adds error" do
         sale_information_validator.validate_staircasing_last_transaction_date(record)
 
-        expect(record.errors[:lasttransaction]).not_to be_present
+        expect(record.errors[:lasttransaction]).to eq([I18n.t("validations.sales.sale_information.lasttransaction.must_be_after_initial_purchase")])
+        expect(record.errors[:initialpurchase]).to eq([I18n.t("validations.sales.sale_information.initialpurchase.must_be_before_last_transaction")])
       end
     end
   end