diff --git a/homeassistant/components/todoist/calendar.py b/homeassistant/components/todoist/calendar.py
index 9b8d0a7c08f..e3f87043e02 100644
--- a/homeassistant/components/todoist/calendar.py
+++ b/homeassistant/components/todoist/calendar.py
@@ -66,6 +66,7 @@ _LOGGER = logging.getLogger(__name__)
 NEW_TASK_SERVICE_SCHEMA = vol.Schema(
     {
         vol.Required(CONTENT): cv.string,
+        vol.Optional(DESCRIPTION): cv.string,
         vol.Optional(PROJECT_NAME, default="inbox"): vol.All(cv.string, vol.Lower),
         vol.Optional(LABELS): cv.ensure_list_csv,
         vol.Optional(ASSIGNEE): cv.string,
@@ -225,6 +226,8 @@ def async_register_services(
         content = call.data[CONTENT]
         data: dict[str, Any] = {"project_id": project_id}
 
+        if description := call.data.get(DESCRIPTION):
+            data["description"] = description
         if task_labels := call.data.get(LABELS):
             data["labels"] = task_labels
 
diff --git a/homeassistant/components/todoist/services.yaml b/homeassistant/components/todoist/services.yaml
index 9593b6bb6a4..1bd6320ebe3 100644
--- a/homeassistant/components/todoist/services.yaml
+++ b/homeassistant/components/todoist/services.yaml
@@ -5,6 +5,9 @@ new_task:
       example: Pick up the mail.
       selector:
         text:
+    description:
+      selector:
+        text:
     project:
       example: Errands
       default: Inbox
diff --git a/homeassistant/components/todoist/strings.json b/homeassistant/components/todoist/strings.json
index 0f81702a4d0..0cc74c9c8c6 100644
--- a/homeassistant/components/todoist/strings.json
+++ b/homeassistant/components/todoist/strings.json
@@ -29,6 +29,10 @@
           "name": "Content",
           "description": "The name of the task."
         },
+        "description": {
+          "name": "Description",
+          "description": "A description for the task."
+        },
         "project": {
           "name": "Project",
           "description": "The name of the project this task should belong to."