diff --git a/src/wuttjamaican/cli/base.py b/src/wuttjamaican/cli/base.py
index e91c485..a9addfe 100644
--- a/src/wuttjamaican/cli/base.py
+++ b/src/wuttjamaican/cli/base.py
@@ -80,12 +80,22 @@ def typer_callback(  # pylint: disable=unused-argument
             help="Username responsible for running the command (where applicable).",
         ),
     ] = None,
+    comment: Annotated[
+        str,
+        typer.Option(
+            "--comment",
+            "-m",
+            help="Comment to apply to the transaction (where applicable).",
+        ),
+    ] = None,
 ):
     """
     Generic callback for use with top-level commands.  This adds some
     top-level args:
 
-    * ``--config`` (and ``-c``)
+    * ``--config`` (and/or ``-c``)
+    * ``--runas``
+    * ``--comment`` (or ``-m``)
 
     This callback is responsible for creating the :term:`config
     object` for the command.  (It calls :func:`make_cli_config()` for