diff --git a/.changelog/4823.txt b/.changelog/4823.txt
new file mode 100644
index 00000000000..b36504610c7
--- /dev/null
+++ b/.changelog/4823.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+vpcaccess: fixed permadiff when `max_throughput` is not set on `google_vpc_access_connector`
+```
diff --git a/google/resource_vpc_access_connector.go b/google/resource_vpc_access_connector.go
index 308b23bf5f6..41b6ee56d8b 100644
--- a/google/resource_vpc_access_connector.go
+++ b/google/resource_vpc_access_connector.go
@@ -59,8 +59,8 @@ func resourceVPCAccessConnector() *schema.Resource {
 				Optional:     true,
 				ForceNew:     true,
 				ValidateFunc: validation.IntBetween(200, 1000),
-				Description:  `Maximum throughput of the connector in Mbps, must be greater than 'min_throughput'. Default is 1000.`,
-				Default:      1000,
+				Description:  `Maximum throughput of the connector in Mbps, must be greater than 'min_throughput'. Default is 300.`,
+				Default:      300,
 			},
 			"min_throughput": {
 				Type:         schema.TypeInt,
diff --git a/google/resource_vpc_access_connector_test.go b/google/resource_vpc_access_connector_test.go
new file mode 100644
index 00000000000..71664db3c87
--- /dev/null
+++ b/google/resource_vpc_access_connector_test.go
@@ -0,0 +1 @@
+package google
diff --git a/website/docs/r/vpc_access_connector.html.markdown b/website/docs/r/vpc_access_connector.html.markdown
index 37294ba6ca6..fc17047e2fd 100644
--- a/website/docs/r/vpc_access_connector.html.markdown
+++ b/website/docs/r/vpc_access_connector.html.markdown
@@ -118,7 +118,7 @@ The following arguments are supported:
 
 * `max_throughput` -
   (Optional)
-  Maximum throughput of the connector in Mbps, must be greater than `min_throughput`. Default is 1000.
+  Maximum throughput of the connector in Mbps, must be greater than `min_throughput`. Default is 300.
 
 * `subnet` -
   (Optional, [Beta](https://terraform.io/docs/providers/google/guides/provider_versions.html))