diff --git a/homeassistant/components/tuya/switch.py b/homeassistant/components/tuya/switch.py
index a0d262aa085..9c021766637 100644
--- a/homeassistant/components/tuya/switch.py
+++ b/homeassistant/components/tuya/switch.py
@@ -26,12 +26,11 @@ class TuyaSwitch(TuyaDevice, SwitchDevice):
         """Init Tuya switch device."""
         super().__init__(tuya)
         self.entity_id = ENTITY_ID_FORMAT.format(tuya.object_id())
-        self._is_on = False
 
     @property
     def is_on(self):
         """Return true if switch is on."""
-        return self._is_on
+        return self.tuya.state()
 
     def turn_on(self, **kwargs):
         """Turn the switch on."""
@@ -40,7 +39,3 @@ class TuyaSwitch(TuyaDevice, SwitchDevice):
     def turn_off(self, **kwargs):
         """Turn the device off."""
         self.tuya.turn_off()
-
-    def update(self):
-        """Update switch device."""
-        self._is_on = self.tuya.state()