diff --git a/app/helpers/invalid_logs_helper.rb b/app/helpers/invalid_logs_helper.rb
new file mode 100644
index 000000000..00e8cb786
--- /dev/null
+++ b/app/helpers/invalid_logs_helper.rb
@@ -0,0 +1,23 @@
+module InvalidLogsHelper
+  def count_and_display_invalid_logs(model, log_type, year)
+    invalid_logs = fetch_invalid_logs(model, year)
+    Rails.logger.info "Number of invalid #{log_type} for year #{year}: #{invalid_logs.size}"
+    Rails.logger.info "Invalid #{log_type} IDs: #{invalid_logs.map(&:id).join(', ')}"
+  end
+
+  def surface_invalid_logs(model, log_type, year)
+    invalid_logs = fetch_invalid_logs(model, year)
+    if invalid_logs.any?
+      invalid_logs.each do |log|
+        Rails.logger.info "#{log_type} ID: #{log.id}"
+        log.errors.full_messages.each { |message| Rails.logger.info "  - #{message}" }
+      end
+    else
+      Rails.logger.info "No invalid #{log_type} found for year #{year}."
+    end
+  end
+
+  def fetch_invalid_logs(model, year)
+    model.filter_by_year(year).reject(&:valid?)
+  end
+end
diff --git a/lib/tasks/invalid_logs.rake b/lib/tasks/invalid_logs.rake
new file mode 100644
index 000000000..14b8ea44c
--- /dev/null
+++ b/lib/tasks/invalid_logs.rake
@@ -0,0 +1,21 @@
+namespace :logs do
+  desc "Count the number of invalid LettingsLog and SalesLog for a given year"
+  task :count_invalid, [:year] => :environment do |_task, args|
+    include CollectionTimeHelper
+    include InvalidLogsHelper
+
+    year = args[:year] || current_collection_year
+    count_and_display_invalid_logs(LettingsLog, "LettingsLog", year)
+    count_and_display_invalid_logs(SalesLog, "SalesLog", year)
+  end
+
+  desc "Surface all invalid logs and output their error messages for a given year"
+  task :surface_invalid, [:year] => :environment do |_task, args|
+    include CollectionTimeHelper
+    include InvalidLogsHelper
+
+    year = args[:year] || current_collection_year
+    surface_invalid_logs(LettingsLog, "LettingsLog", year)
+    surface_invalid_logs(SalesLog, "SalesLog", year)
+  end
+end