diff --git a/changelog.d/mod/2930.enhance.rst b/changelog.d/mod/2930.enhance.rst
new file mode 100644
index 000000000..c85c0238d
--- /dev/null
+++ b/changelog.d/mod/2930.enhance.rst
@@ -0,0 +1 @@
+Added a defaultdays command to set the amount of days for the ban commands to use for days of messages deleted when days isn't used in the command itself.
diff --git a/redbot/cogs/mod/kickban.py b/redbot/cogs/mod/kickban.py
index 2b7c57d3f..2a2816227 100644
--- a/redbot/cogs/mod/kickban.py
+++ b/redbot/cogs/mod/kickban.py
@@ -218,15 +218,17 @@ class KickBanMixin(MixinMeta):
         self,
         ctx: commands.Context,
         user: discord.Member,
-        days: Optional[int] = 0,
+        days: Optional[int] = None,
         *,
         reason: str = None,
     ):
         """Ban a user from this server and optionally delete days of messages.
 
         If days is not a number, it's treated as the first word of the reason.
-        Minimum 0 days, maximum 7. Defaults to 0."""
-
+        Minimum 0 days, maximum 7. If not specified, defaultdays setting will be used instead."""
+        guild = ctx.guild
+        if days is None:
+            days = await self.settings.guild(guild).default_days()
         result = await self.ban_user(
             user=user, ctx=ctx, days=days, reason=reason, create_modlog_case=True
         )
diff --git a/redbot/cogs/mod/mod.py b/redbot/cogs/mod/mod.py
index 95ad52baa..37527d2b6 100644
--- a/redbot/cogs/mod/mod.py
+++ b/redbot/cogs/mod/mod.py
@@ -53,6 +53,7 @@ class Mod(
         "delete_delay": -1,
         "reinvite_on_unban": False,
         "current_tempbans": [],
+        "default_days": 0,
     }
 
     default_channel_settings = {"ignored": False}
diff --git a/redbot/cogs/mod/settings.py b/redbot/cogs/mod/settings.py
index e7923c57e..5de256056 100644
--- a/redbot/cogs/mod/settings.py
+++ b/redbot/cogs/mod/settings.py
@@ -21,11 +21,13 @@ class ModSettings(MixinMeta):
         if ctx.invoked_subcommand is None:
             guild = ctx.guild
             # Display current settings
-            delete_repeats = await self.settings.guild(guild).delete_repeats()
-            ban_mention_spam = await self.settings.guild(guild).ban_mention_spam()
-            respect_hierarchy = await self.settings.guild(guild).respect_hierarchy()
-            delete_delay = await self.settings.guild(guild).delete_delay()
-            reinvite_on_unban = await self.settings.guild(guild).reinvite_on_unban()
+            data = await self.settings.guild(guild).all()
+            delete_repeats = data["delete_repeats"]
+            ban_mention_spam = data["ban_mention_spam"]
+            respect_hierarchy = data["respect_hierarchy"]
+            delete_delay = data["delete_delay"]
+            reinvite_on_unban = data["reinvite_on_unban"]
+            default_days = data["default_days"]
             msg = ""
             msg += _("Delete repeats: {num_repeats}\n").format(
                 num_repeats=_("after {num} repeats").format(num=delete_repeats)
@@ -48,6 +50,12 @@ class ModSettings(MixinMeta):
             msg += _("Reinvite on unban: {yes_or_no}\n").format(
                 yes_or_no=_("Yes") if reinvite_on_unban else _("No")
             )
+            if default_days:
+                msg += _(
+                    "Default message history delete on ban: Previous {num_days} days\n"
+                ).format(num_days=default_days)
+            else:
+                msg += _("Default message history delete on ban: Don't delete any\n")
             await ctx.send(box(msg))
 
     @modset.command()
@@ -199,3 +207,20 @@ class ModSettings(MixinMeta):
                     command=f"{ctx.prefix}unban"
                 )
             )
+
+    @modset.command()
+    @commands.guild_only()
+    async def defaultdays(self, ctx: commands.Context, days: int = 0):
+        """Set the default number of days worth of messages to be deleted when a user is banned.
+
+        The number of days must be between 0 and 7.
+        """
+        guild = ctx.guild
+        if not (0 <= days <= 7):
+            return await ctx.send(_("Invalid number of days. Must be between 0 and 7."))
+        await self.settings.guild(guild).default_days.set(days)
+        await ctx.send(
+            _("{days} days worth of messages will be deleted when a user is banned.").format(
+                days=days
+            )
+        )