diff --git a/app/services/bulk_upload/sales/year2026/row_parser.rb b/app/services/bulk_upload/sales/year2026/row_parser.rb
index b69313814..097c6e70c 100644
--- a/app/services/bulk_upload/sales/year2026/row_parser.rb
+++ b/app/services/bulk_upload/sales/year2026/row_parser.rb
@@ -152,7 +152,7 @@ class BulkUpload::Sales::Year2026::RowParser
   }.freeze
 
   ERROR_BASE_KEY = "validations.sales.2026.bulk_upload".freeze
-  SERVICE_CHARGE_FORMAT = /\A(\d+(\.\d+)?|R)\z/
+  SERVICE_CHARGE_FORMAT = /\A(\d+(\.\d+)?|R)\z/i
 
   CASE_INSENSITIVE_FIELDS = [
     :field_29, # Age of buyer 1
@@ -478,7 +478,6 @@ class BulkUpload::Sales::Year2026::RowParser
             },
             on: :after_log
 
-  validate :validate_service_charge_fields, on: :before_log
 
   validate :validate_buyer1_economic_status, on: :before_log
   validate :validate_buyer2_economic_status, on: :before_log
@@ -504,6 +503,8 @@ class BulkUpload::Sales::Year2026::RowParser
   validate :validate_buyer_2_nationality, on: :after_log
   validate :validate_mortlen_field_if_buyer_interviewed, on: :after_log
 
+  validate :validate_service_charge_fields, on: :after_log
+
   validate :validate_nulls, on: :after_log
 
   def self.question_for_field(field)
@@ -1400,12 +1401,12 @@ private
   def validate_service_charge_fields
     message = I18n.t("#{ERROR_BASE_KEY}.mscharge.invalid")
 
-    if shared_ownership_initial_purchase? && field_107.present? && (!field_107.match?(SERVICE_CHARGE_FORMAT) || field_107.to_d.zero?)
+    if shared_ownership_initial_purchase? && field_107.present? && (!field_107.match?(SERVICE_CHARGE_FORMAT) || (field_107 != "R" && field_107.to_d.zero?))
       errors.add(:field_107, message)
     end
 
     if staircasing?
-      if field_125.present? && (!field_125.match?(SERVICE_CHARGE_FORMAT) || field_125.to_d.zero?)
+      if field_125.present? && (!field_125.match?(SERVICE_CHARGE_FORMAT) || (field_125 != "R" && field_125.to_d.zero?))
         errors.add(:field_125, message)
       end
 
@@ -1414,7 +1415,7 @@ private
       end
     end
 
-    if discounted_ownership? && field_136.present? && (!field_136.match?(SERVICE_CHARGE_FORMAT) || field_136.to_d.zero?)
+    if discounted_ownership? && field_136.present? && (!field_136.match?(SERVICE_CHARGE_FORMAT) || (field_136 != "R" && field_136.to_d.zero?))
       errors.add(:field_136, message)
     end
   end