diff --git a/homeassistant/components/tailscale/binary_sensor.py b/homeassistant/components/tailscale/binary_sensor.py
index 35c73cd0223..7803a7eb472 100644
--- a/homeassistant/components/tailscale/binary_sensor.py
+++ b/homeassistant/components/tailscale/binary_sensor.py
@@ -36,6 +36,12 @@ BINARY_SENSORS: tuple[TailscaleBinarySensorEntityDescription, ...] = (
         entity_category=EntityCategory.DIAGNOSTIC,
         is_on_fn=lambda device: device.update_available,
     ),
+    TailscaleBinarySensorEntityDescription(
+        key="key_expiry_disabled",
+        translation_key="key_expiry_disabled",
+        entity_category=EntityCategory.DIAGNOSTIC,
+        is_on_fn=lambda device: device.key_expiry_disabled,
+    ),
     TailscaleBinarySensorEntityDescription(
         key="client_supports_hair_pinning",
         translation_key="client_supports_hair_pinning",
diff --git a/homeassistant/components/tailscale/strings.json b/homeassistant/components/tailscale/strings.json
index b110e53ee64..8d7fcc0c87b 100644
--- a/homeassistant/components/tailscale/strings.json
+++ b/homeassistant/components/tailscale/strings.json
@@ -29,6 +29,9 @@
       "client": {
         "name": "Client"
       },
+      "key_expiry_disabled": {
+        "name": "Key expiry disabled"
+      },
       "client_supports_hair_pinning": {
         "name": "Supports hairpinning"
       },
diff --git a/tests/components/tailscale/test_binary_sensor.py b/tests/components/tailscale/test_binary_sensor.py
index 1d1cda84723..b59d3872655 100644
--- a/tests/components/tailscale/test_binary_sensor.py
+++ b/tests/components/tailscale/test_binary_sensor.py
@@ -31,6 +31,20 @@ async def test_tailscale_binary_sensors(
     assert state.attributes.get(ATTR_FRIENDLY_NAME) == "frencks-iphone Client"
     assert state.attributes.get(ATTR_DEVICE_CLASS) == BinarySensorDeviceClass.UPDATE
 
+    state = hass.states.get("binary_sensor.frencks_iphone_key_expiry_disabled")
+    entry = entity_registry.async_get(
+        "binary_sensor.frencks_iphone_key_expiry_disabled"
+    )
+    assert entry
+    assert state
+    assert entry.unique_id == "123456_key_expiry_disabled"
+    assert entry.entity_category == EntityCategory.DIAGNOSTIC
+    assert state.state == STATE_OFF
+    assert (
+        state.attributes.get(ATTR_FRIENDLY_NAME) == "frencks-iphone Key expiry disabled"
+    )
+    assert ATTR_DEVICE_CLASS not in state.attributes
+
     state = hass.states.get("binary_sensor.frencks_iphone_supports_hairpinning")
     entry = entity_registry.async_get(
         "binary_sensor.frencks_iphone_supports_hairpinning"