diff --git a/app/models/bulk_upload.rb b/app/models/bulk_upload.rb
index 66e83cd85..ed1e9ab21 100644
--- a/app/models/bulk_upload.rb
+++ b/app/models/bulk_upload.rb
@@ -14,6 +14,10 @@ class BulkUpload < ApplicationRecord
     "#{year}/#{year - 2000 + 1}"
   end
 
+  def end_year
+    year + 1
+  end
+
   def logs
     if lettings?
       lettings_logs
diff --git a/app/services/bulk_upload/lettings/year2022/row_parser.rb b/app/services/bulk_upload/lettings/year2022/row_parser.rb
index 62cf9e872..216008287 100644
--- a/app/services/bulk_upload/lettings/year2022/row_parser.rb
+++ b/app/services/bulk_upload/lettings/year2022/row_parser.rb
@@ -680,9 +680,9 @@ private
     return if start_date.blank? || bulk_upload.form.blank?
 
     unless bulk_upload.form.valid_start_date_for_form?(start_date)
-      errors.add(:field_96, I18n.t("validations.date.outside_collection_window"), category: :setup)
-      errors.add(:field_97, I18n.t("validations.date.outside_collection_window"), category: :setup)
-      errors.add(:field_98, I18n.t("validations.date.outside_collection_window"), category: :setup)
+      errors.add(:field_96, I18n.t("validations.date.outside_collection_window", year_combo: bulk_upload.year_combo, start_year: bulk_upload.year, end_year: bulk_upload.end_year), category: :setup)
+      errors.add(:field_97, I18n.t("validations.date.outside_collection_window", year_combo: bulk_upload.year_combo, start_year: bulk_upload.year, end_year: bulk_upload.end_year), category: :setup)
+      errors.add(:field_98, I18n.t("validations.date.outside_collection_window", year_combo: bulk_upload.year_combo, start_year: bulk_upload.year, end_year: bulk_upload.end_year), category: :setup)
     end
   end
 
diff --git a/app/services/bulk_upload/lettings/year2023/row_parser.rb b/app/services/bulk_upload/lettings/year2023/row_parser.rb
index 9dc5b60de..4783f22ff 100644
--- a/app/services/bulk_upload/lettings/year2023/row_parser.rb
+++ b/app/services/bulk_upload/lettings/year2023/row_parser.rb
@@ -624,9 +624,9 @@ private
     return if start_date.blank? || bulk_upload.form.blank?
 
     unless bulk_upload.form.valid_start_date_for_form?(start_date)
-      errors.add(:field_7, I18n.t("validations.date.outside_collection_window"), category: :setup)
-      errors.add(:field_8, I18n.t("validations.date.outside_collection_window"), category: :setup)
-      errors.add(:field_9, I18n.t("validations.date.outside_collection_window"), category: :setup)
+      errors.add(:field_7, I18n.t("validations.date.outside_collection_window", year_combo: bulk_upload.year_combo, start_year: bulk_upload.year, end_year: bulk_upload.end_year), category: :setup)
+      errors.add(:field_8, I18n.t("validations.date.outside_collection_window", year_combo: bulk_upload.year_combo, start_year: bulk_upload.year, end_year: bulk_upload.end_year), category: :setup)
+      errors.add(:field_9, I18n.t("validations.date.outside_collection_window", year_combo: bulk_upload.year_combo, start_year: bulk_upload.year, end_year: bulk_upload.end_year), category: :setup)
     end
   end
 
diff --git a/app/services/bulk_upload/sales/year2022/row_parser.rb b/app/services/bulk_upload/sales/year2022/row_parser.rb
index fb783b499..9cc2f1f02 100644
--- a/app/services/bulk_upload/sales/year2022/row_parser.rb
+++ b/app/services/bulk_upload/sales/year2022/row_parser.rb
@@ -941,9 +941,9 @@ private
     return if saledate.blank? || bulk_upload.form.blank?
 
     unless bulk_upload.form.valid_start_date_for_form?(saledate)
-      errors.add(:field_2, I18n.t("validations.date.outside_collection_window"), category: :setup)
-      errors.add(:field_3, I18n.t("validations.date.outside_collection_window"), category: :setup)
-      errors.add(:field_4, I18n.t("validations.date.outside_collection_window"), category: :setup)
+      errors.add(:field_2, I18n.t("validations.date.outside_collection_window", year_combo: bulk_upload.year_combo, start_year: bulk_upload.year, end_year: bulk_upload.end_year), category: :setup)
+      errors.add(:field_3, I18n.t("validations.date.outside_collection_window", year_combo: bulk_upload.year_combo, start_year: bulk_upload.year, end_year: bulk_upload.end_year), category: :setup)
+      errors.add(:field_4, I18n.t("validations.date.outside_collection_window", year_combo: bulk_upload.year_combo, start_year: bulk_upload.year, end_year: bulk_upload.end_year), category: :setup)
     end
   end
 
diff --git a/app/services/bulk_upload/sales/year2023/row_parser.rb b/app/services/bulk_upload/sales/year2023/row_parser.rb
index 41e50a112..91b6a0d40 100644
--- a/app/services/bulk_upload/sales/year2023/row_parser.rb
+++ b/app/services/bulk_upload/sales/year2023/row_parser.rb
@@ -1102,9 +1102,9 @@ private
     return if saledate.blank? || bulk_upload.form.blank?
 
     unless bulk_upload.form.valid_start_date_for_form?(saledate)
-      errors.add(:field_3, I18n.t("validations.date.outside_collection_window"))
-      errors.add(:field_4, I18n.t("validations.date.outside_collection_window"))
-      errors.add(:field_5, I18n.t("validations.date.outside_collection_window"))
+      errors.add(:field_3, I18n.t("validations.date.outside_collection_window", year_combo: bulk_upload.year_combo, start_year: bulk_upload.year, end_year: bulk_upload.end_year))
+      errors.add(:field_4, I18n.t("validations.date.outside_collection_window", year_combo: bulk_upload.year_combo, start_year: bulk_upload.year, end_year: bulk_upload.end_year))
+      errors.add(:field_5, I18n.t("validations.date.outside_collection_window", year_combo: bulk_upload.year_combo, start_year: bulk_upload.year, end_year: bulk_upload.end_year))
     end
   end
 end
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 0e2500dce..1ac1fb6c3 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -165,7 +165,7 @@ en:
 
     date:
       invalid_date: "Enter a date in the correct format, for example 31 1 2022"
-      outside_collection_window: Enter a date within the 22/23 collection year, which is between 1st April 2022 and 31st March 2023
+      outside_collection_window: Enter a date within the %{year_combo} collection year, which is between 1st April %{start_year} and 31st March %{end_year}
     postcode: "Enter a postcode in the correct format, for example AA1 1AA"
     location_admin_district: "Select a local authority"
     email: