diff --git a/esphome/components/sensor/__init__.py b/esphome/components/sensor/__init__.py
index 0a0c3a9214..62ed07b408 100644
--- a/esphome/components/sensor/__init__.py
+++ b/esphome/components/sensor/__init__.py
@@ -44,6 +44,7 @@ from esphome.const import (
     DEVICE_CLASS_ENERGY,
     DEVICE_CLASS_HUMIDITY,
     DEVICE_CLASS_ILLUMINANCE,
+    DEVICE_CLASS_MONETARY,
     DEVICE_CLASS_SIGNAL_STRENGTH,
     DEVICE_CLASS_TEMPERATURE,
     DEVICE_CLASS_POWER,
@@ -66,6 +67,7 @@ DEVICE_CLASSES = [
     DEVICE_CLASS_ENERGY,
     DEVICE_CLASS_HUMIDITY,
     DEVICE_CLASS_ILLUMINANCE,
+    DEVICE_CLASS_MONETARY,
     DEVICE_CLASS_SIGNAL_STRENGTH,
     DEVICE_CLASS_TEMPERATURE,
     DEVICE_CLASS_TIMESTAMP,
diff --git a/esphome/const.py b/esphome/const.py
index b22bc5e1de..6702e773c6 100644
--- a/esphome/const.py
+++ b/esphome/const.py
@@ -777,6 +777,7 @@ DEVICE_CLASS_CURRENT = "current"
 DEVICE_CLASS_ENERGY = "energy"
 DEVICE_CLASS_HUMIDITY = "humidity"
 DEVICE_CLASS_ILLUMINANCE = "illuminance"
+DEVICE_CLASS_MONETARY = "monetary"
 DEVICE_CLASS_SIGNAL_STRENGTH = "signal_strength"
 DEVICE_CLASS_TEMPERATURE = "temperature"
 DEVICE_CLASS_POWER_FACTOR = "power_factor"