diff --git a/homeassistant/components/google_cloud/const.py b/homeassistant/components/google_cloud/const.py
index f416d36483ac3..16b1463f0f31a 100644
--- a/homeassistant/components/google_cloud/const.py
+++ b/homeassistant/components/google_cloud/const.py
@@ -20,6 +20,10 @@
 CONF_PROFILES = "profiles"
 CONF_TEXT_TYPE = "text_type"
 
+DEFAULT_SPEED = 1.0
+DEFAULT_PITCH = 0
+DEFAULT_GAIN = 0
+
 # STT constants
 CONF_STT_MODEL = "stt_model"
 
diff --git a/homeassistant/components/google_cloud/helpers.py b/homeassistant/components/google_cloud/helpers.py
index f6e89fae7fa49..f1adc42b4cde8 100644
--- a/homeassistant/components/google_cloud/helpers.py
+++ b/homeassistant/components/google_cloud/helpers.py
@@ -31,7 +31,10 @@
     CONF_SPEED,
     CONF_TEXT_TYPE,
     CONF_VOICE,
+    DEFAULT_GAIN,
     DEFAULT_LANG,
+    DEFAULT_PITCH,
+    DEFAULT_SPEED,
 )
 
 DEFAULT_VOICE = ""
@@ -104,15 +107,15 @@ def tts_options_schema(
             ),
             vol.Optional(
                 CONF_SPEED,
-                default=defaults.get(CONF_SPEED, 1.0),
+                default=defaults.get(CONF_SPEED, DEFAULT_SPEED),
             ): NumberSelector(NumberSelectorConfig(min=0.25, max=4.0, step=0.01)),
             vol.Optional(
                 CONF_PITCH,
-                default=defaults.get(CONF_PITCH, 0),
+                default=defaults.get(CONF_PITCH, DEFAULT_PITCH),
             ): NumberSelector(NumberSelectorConfig(min=-20.0, max=20.0, step=0.1)),
             vol.Optional(
                 CONF_GAIN,
-                default=defaults.get(CONF_GAIN, 0),
+                default=defaults.get(CONF_GAIN, DEFAULT_GAIN),
             ): NumberSelector(NumberSelectorConfig(min=-96.0, max=16.0, step=0.1)),
             vol.Optional(
                 CONF_PROFILES,
diff --git a/homeassistant/components/google_cloud/tts.py b/homeassistant/components/google_cloud/tts.py
index c3a8254ad90b5..7f22dda4fafae 100644
--- a/homeassistant/components/google_cloud/tts.py
+++ b/homeassistant/components/google_cloud/tts.py
@@ -35,7 +35,10 @@
     CONF_SPEED,
     CONF_TEXT_TYPE,
     CONF_VOICE,
+    DEFAULT_GAIN,
     DEFAULT_LANG,
+    DEFAULT_PITCH,
+    DEFAULT_SPEED,
     DOMAIN,
 )
 from .helpers import async_tts_voices, tts_options_schema, tts_platform_schema
@@ -191,11 +194,23 @@ async def _async_get_tts_audio(
                 ssml_gender=gender,
                 name=voice,
             ),
+            # Avoid: "This voice does not support speaking rate or pitch parameters at this time."
+            # by not specifying the fields unless they differ from the defaults
             audio_config=texttospeech.AudioConfig(
                 audio_encoding=encoding,
-                speaking_rate=options[CONF_SPEED],
-                pitch=options[CONF_PITCH],
-                volume_gain_db=options[CONF_GAIN],
+                speaking_rate=(
+                    options[CONF_SPEED]
+                    if options[CONF_SPEED] != DEFAULT_SPEED
+                    else None
+                ),
+                pitch=(
+                    options[CONF_PITCH]
+                    if options[CONF_PITCH] != DEFAULT_PITCH
+                    else None
+                ),
+                volume_gain_db=(
+                    options[CONF_GAIN] if options[CONF_GAIN] != DEFAULT_GAIN else None
+                ),
                 effects_profile_id=options[CONF_PROFILES],
             ),
         )