diff --git a/homeassistant/helpers/entityfilter.py b/homeassistant/helpers/entityfilter.py
index 837c5e2bc1d..24b65cba82a 100644
--- a/homeassistant/helpers/entityfilter.py
+++ b/homeassistant/helpers/entityfilter.py
@@ -4,11 +4,18 @@ from __future__ import annotations
 
 from collections.abc import Callable
 import fnmatch
+from functools import lru_cache
 import re
 
 import voluptuous as vol
 
-from homeassistant.const import CONF_DOMAINS, CONF_ENTITIES, CONF_EXCLUDE, CONF_INCLUDE
+from homeassistant.const import (
+    CONF_DOMAINS,
+    CONF_ENTITIES,
+    CONF_EXCLUDE,
+    CONF_INCLUDE,
+    MAX_EXPECTED_ENTITY_IDS,
+)
 from homeassistant.core import split_entity_id
 
 from . import config_validation as cv
@@ -197,6 +204,7 @@ def _generate_filter_from_sets_and_pattern_lists(
     # - Otherwise: exclude
     if have_include and not have_exclude:
 
+        @lru_cache(maxsize=MAX_EXPECTED_ENTITY_IDS)
         def entity_included(entity_id: str) -> bool:
             """Return true if entity matches inclusion filters."""
             return (
@@ -215,6 +223,7 @@ def _generate_filter_from_sets_and_pattern_lists(
     # - Otherwise: include
     if not have_include and have_exclude:
 
+        @lru_cache(maxsize=MAX_EXPECTED_ENTITY_IDS)
         def entity_not_excluded(entity_id: str) -> bool:
             """Return true if entity matches exclusion filters."""
             return not (
@@ -234,6 +243,7 @@ def _generate_filter_from_sets_and_pattern_lists(
     # - Otherwise: exclude
     if include_d or include_eg:
 
+        @lru_cache(maxsize=MAX_EXPECTED_ENTITY_IDS)
         def entity_filter_4a(entity_id: str) -> bool:
             """Return filter function for case 4a."""
             return entity_id in include_e or (
@@ -257,6 +267,7 @@ def _generate_filter_from_sets_and_pattern_lists(
     # - Otherwise: include
     if exclude_d or exclude_eg:
 
+        @lru_cache(maxsize=MAX_EXPECTED_ENTITY_IDS)
         def entity_filter_4b(entity_id: str) -> bool:
             """Return filter function for case 4b."""
             domain = split_entity_id(entity_id)[0]