diff --git a/app/admin/dashboard.rb b/app/admin/dashboard.rb
index a1bc836..541913d 100644
--- a/app/admin/dashboard.rb
+++ b/app/admin/dashboard.rb
@@ -91,6 +91,14 @@
             span do
               button_to 'Send Balance Due email', send_balance_due_url, class: 'btn'
             end
+            span do
+              if current_application_settings.balance_due_emails_last_sent_at.present?
+                zone = current_application_settings.time_zone.presence || Time.zone.name
+                "Last sent: #{current_application_settings.balance_due_emails_last_sent_at.in_time_zone(zone).strftime('%B %-d, %Y at %-I:%M %p %Z')}"
+              else
+                'Last sent: never'
+              end
+            end
           end
         end
         column do
diff --git a/app/controllers/applications_controller.rb b/app/controllers/applications_controller.rb
index 0546316..254864c 100644
--- a/app/controllers/applications_controller.rb
+++ b/app/controllers/applications_controller.rb
@@ -99,6 +99,7 @@ def send_balance_due
         message_count += 1
       end
     end
+    current_application_settings&.update(balance_due_emails_last_sent_at: Time.current)
     flash[:alert] = "#{message_count} balance due messages sent."
     redirect_to admin_root_path
   end
diff --git a/db/migrate/20260331160000_add_balance_due_emails_last_sent_at_to_application_settings.rb b/db/migrate/20260331160000_add_balance_due_emails_last_sent_at_to_application_settings.rb
new file mode 100644
index 0000000..4311e83
--- /dev/null
+++ b/db/migrate/20260331160000_add_balance_due_emails_last_sent_at_to_application_settings.rb
@@ -0,0 +1,5 @@
+class AddBalanceDueEmailsLastSentAtToApplicationSettings < ActiveRecord::Migration[7.0]
+  def change
+    add_column :application_settings, :balance_due_emails_last_sent_at, :datetime
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 524751e..924afa0 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2025_03_04_203447) do
+ActiveRecord::Schema[7.2].define(version: 2026_03_31_160000) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -54,11 +54,18 @@
     t.string "content_type"
     t.text "metadata"
     t.bigint "byte_size", null: false
-    t.string "checksum", null: false
+    t.string "checksum"
     t.datetime "created_at", precision: nil, null: false
+    t.string "service_name", null: false
     t.index ["key"], name: "index_active_storage_blobs_on_key", unique: true
   end
 
+  create_table "active_storage_variant_records", id: :serial, force: :cascade do |t|
+    t.integer "blob_id", null: false
+    t.string "variation_digest", null: false
+    t.index ["blob_id", "variation_digest"], name: "index_active_storage_variant_records_uniqueness", unique: true
+  end
+
   create_table "admin_users", force: :cascade do |t|
     t.string "email", default: "", null: false
     t.string "encrypted_password", default: "", null: false
@@ -99,6 +106,7 @@
     t.text "application_confirm_email_message"
     t.text "balance_due_email_message"
     t.text "special_offer_invite_email"
+    t.datetime "balance_due_emails_last_sent_at"
   end
 
   create_table "applications", force: :cascade do |t|
@@ -211,6 +219,7 @@
   end
 
   add_foreign_key "active_storage_attachments", "active_storage_blobs", column: "blob_id"
+  add_foreign_key "active_storage_variant_records", "active_storage_blobs", column: "blob_id"
   add_foreign_key "applications", "partner_registrations"
   add_foreign_key "applications", "users"
   add_foreign_key "payments", "users"
diff --git a/spec/requests/applications_spec.rb b/spec/requests/applications_spec.rb
index f834d3d..c92ab68 100644
--- a/spec/requests/applications_spec.rb
+++ b/spec/requests/applications_spec.rb
@@ -181,7 +181,7 @@
     end
   end
 
-  describe "GET /send_balance_due" do
+  describe "GET /send_balance_due", :real_application_settings do
     context "when admin user is not signed in" do
       it "redirects to admin sign in page" do
         post send_balance_due_path
@@ -190,6 +190,8 @@
     end
 
     context "when admin user is signed in" do
+      let!(:application_setting) { create(:application_setting, active_application: true) }
+
       before do
         sign_in admin_user
         # Mock the mailer to prevent actual emails from being sent
@@ -201,6 +203,7 @@
         post send_balance_due_path
         expect(response).to redirect_to(admin_root_path)
         expect(flash[:alert]).to eq('1 balance due messages sent.')
+        expect(application_setting.reload.balance_due_emails_last_sent_at).to be_present
       end
     end
   end