diff --git a/changelog.d/14487.misc b/changelog.d/14487.misc
new file mode 100644
index 000000000000..f6b47a1d8e91
--- /dev/null
+++ b/changelog.d/14487.misc
@@ -0,0 +1 @@
+Reduce default third party invite rate limit to 216 invites per day.
diff --git a/synapse/config/ratelimiting.py b/synapse/config/ratelimiting.py
index 1ed001e10553..5c13fe428a70 100644
--- a/synapse/config/ratelimiting.py
+++ b/synapse/config/ratelimiting.py
@@ -150,8 +150,5 @@ def read_config(self, config: JsonDict, **kwargs: Any) -> None:
 
         self.rc_third_party_invite = RatelimitSettings(
             config.get("rc_third_party_invite", {}),
-            defaults={
-                "per_second": self.rc_message.per_second,
-                "burst_count": self.rc_message.burst_count,
-            },
+            defaults={"per_second": 0.0025, "burst_count": 5},
         )