diff --git a/lib/membership_fees/membership_fee_cycle.ex b/lib/membership_fees/membership_fee_cycle.ex
index cb881938..d6842efe 100644
--- a/lib/membership_fees/membership_fee_cycle.ex
+++ b/lib/membership_fees/membership_fee_cycle.ex
@@ -36,6 +36,16 @@ defmodule Mv.MembershipFees.MembershipFeeCycle do
   postgres do
     table "membership_fee_cycles"
     repo Mv.Repo
+
+    custom_indexes do
+      # Serves the period-scoped unpaid-cycle count on the member overview:
+      # count of a member's cycles with status = :unpaid and cycle_end in the
+      # active period. The composite (member_id, status, cycle_end) lets the
+      # aggregate seek the per-member unpaid slice and range-scan cycle_end
+      # without touching paid/suspended rows.
+      index [:member_id, :status, :cycle_end],
+        name: "membership_fee_cycles_member_status_end_index"
+    end
   end
 
   resource do
diff --git a/priv/repo/migrations/20260706191440_add_membership_fee_cycles_status_end_index.exs b/priv/repo/migrations/20260706191440_add_membership_fee_cycles_status_end_index.exs
new file mode 100644
index 00000000..b3fb8a55
--- /dev/null
+++ b/priv/repo/migrations/20260706191440_add_membership_fee_cycles_status_end_index.exs
@@ -0,0 +1,22 @@
+defmodule Mv.Repo.Migrations.AddMembershipFeeCyclesStatusEndIndex do
+  @moduledoc """
+  Adds a composite index on membership_fee_cycles(member_id, status, cycle_end)
+  to serve the period-scoped unpaid-cycle count on the member overview.
+
+  This file was autogenerated with `mix ash_postgres.generate_migrations`.
+  """
+
+  use Ecto.Migration
+
+  def up do
+    create index(:membership_fee_cycles, [:member_id, :status, :cycle_end],
+             name: "membership_fee_cycles_member_status_end_index"
+           )
+  end
+
+  def down do
+    drop_if_exists index(:membership_fee_cycles, [:member_id, :status, :cycle_end],
+                     name: "membership_fee_cycles_member_status_end_index"
+                   )
+  end
+end
diff --git a/priv/resource_snapshots/repo/membership_fee_cycles/20260706191442.json b/priv/resource_snapshots/repo/membership_fee_cycles/20260706191442.json
new file mode 100644
index 00000000..5d974b60
--- /dev/null
+++ b/priv/resource_snapshots/repo/membership_fee_cycles/20260706191442.json
@@ -0,0 +1,206 @@
+{
+  "attributes": [
+    {
+      "allow_nil?": false,
+      "default": "fragment(\"uuid_generate_v7()\")",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": true,
+      "references": null,
+      "scale": null,
+      "size": null,
+      "source": "id",
+      "type": "uuid"
+    },
+    {
+      "allow_nil?": false,
+      "default": "nil",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": false,
+      "references": null,
+      "scale": null,
+      "size": null,
+      "source": "cycle_start",
+      "type": "date"
+    },
+    {
+      "allow_nil?": false,
+      "default": "nil",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": false,
+      "references": null,
+      "scale": null,
+      "size": null,
+      "source": "cycle_end",
+      "type": "date"
+    },
+    {
+      "allow_nil?": false,
+      "default": "nil",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": false,
+      "references": null,
+      "scale": 2,
+      "size": null,
+      "source": "amount",
+      "type": "decimal"
+    },
+    {
+      "allow_nil?": false,
+      "default": "\"unpaid\"",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": false,
+      "references": null,
+      "scale": null,
+      "size": null,
+      "source": "status",
+      "type": "text"
+    },
+    {
+      "allow_nil?": true,
+      "default": "nil",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": false,
+      "references": null,
+      "scale": null,
+      "size": null,
+      "source": "notes",
+      "type": "text"
+    },
+    {
+      "allow_nil?": false,
+      "default": "nil",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": false,
+      "references": {
+        "deferrable": false,
+        "destination_attribute": "id",
+        "destination_attribute_default": null,
+        "destination_attribute_generated": null,
+        "index?": false,
+        "match_type": null,
+        "match_with": null,
+        "multitenancy": {
+          "attribute": null,
+          "global": null,
+          "strategy": null
+        },
+        "name": "membership_fee_cycles_member_id_fkey",
+        "on_delete": null,
+        "on_update": null,
+        "primary_key?": true,
+        "schema": "public",
+        "table": "members"
+      },
+      "scale": null,
+      "size": null,
+      "source": "member_id",
+      "type": "uuid"
+    },
+    {
+      "allow_nil?": false,
+      "default": "nil",
+      "generated?": false,
+      "precision": null,
+      "primary_key?": false,
+      "references": {
+        "deferrable": false,
+        "destination_attribute": "id",
+        "destination_attribute_default": null,
+        "destination_attribute_generated": null,
+        "index?": false,
+        "match_type": null,
+        "match_with": null,
+        "multitenancy": {
+          "attribute": null,
+          "global": null,
+          "strategy": null
+        },
+        "name": "membership_fee_cycles_membership_fee_type_id_fkey",
+        "on_delete": null,
+        "on_update": null,
+        "primary_key?": true,
+        "schema": "public",
+        "table": "membership_fee_types"
+      },
+      "scale": null,
+      "size": null,
+      "source": "membership_fee_type_id",
+      "type": "uuid"
+    }
+  ],
+  "base_filter": null,
+  "check_constraints": [],
+  "create_table_options": null,
+  "custom_indexes": [
+    {
+      "all_tenants?": false,
+      "concurrently": false,
+      "error_fields": [
+        "member_id",
+        "status",
+        "cycle_end"
+      ],
+      "fields": [
+        {
+          "type": "atom",
+          "value": "member_id"
+        },
+        {
+          "type": "atom",
+          "value": "status"
+        },
+        {
+          "type": "atom",
+          "value": "cycle_end"
+        }
+      ],
+      "include": null,
+      "message": null,
+      "name": "membership_fee_cycles_member_status_end_index",
+      "nulls_distinct": true,
+      "prefix": null,
+      "table": null,
+      "unique": false,
+      "using": null,
+      "where": null
+    }
+  ],
+  "custom_statements": [],
+  "has_create_action": true,
+  "hash": "6CDBA37AC6000D63F3014D3EED08B613B32E8D908D598248747EFA093BC5246A",
+  "identities": [
+    {
+      "all_tenants?": false,
+      "base_filter": null,
+      "index_name": "membership_fee_cycles_unique_cycle_per_member_index",
+      "keys": [
+        {
+          "type": "atom",
+          "value": "member_id"
+        },
+        {
+          "type": "atom",
+          "value": "cycle_start"
+        }
+      ],
+      "name": "unique_cycle_per_member",
+      "nils_distinct?": true,
+      "where": null
+    }
+  ],
+  "multitenancy": {
+    "attribute": null,
+    "global": null,
+    "strategy": null
+  },
+  "repo": "Elixir.Mv.Repo",
+  "schema": null,
+  "table": "membership_fee_cycles"
+}
\ No newline at end of file