diff --git a/vpn-transit-gateway/README.md b/vpn-transit-gateway/README.md
index 8a5a8b5..f8a3afb 100644
--- a/vpn-transit-gateway/README.md
+++ b/vpn-transit-gateway/README.md
@@ -82,6 +82,7 @@ No modules.
 | <a name="input_override_prefixes"></a> [override\_prefixes](#input\_override\_prefixes) | Override built-in prefixes by component. This should be used primarily for common infrastructure things | `map(string)` | `{}` | no |
 | <a name="input_route_table_ids"></a> [route\_table\_ids](#input\_route\_table\_ids) | List of created route table IDs for privating routing to be used for VPN route propagation | `list(string)` | `[]` | no |
 | <a name="input_tags"></a> [tags](#input\_tags) | AWS Tags to apply to appropriate resources (S3, KMS).  Do not include safeguard tags here, use the data\_safeguard field for such things. | `map(string)` | `{}` | no |
+| <a name="input_tgw_environment"></a> [tgw\_environment](#input\_tgw\_environment) | Transit Gatewway environment purpose (services, dev, test, stage, prod, cre) | `string` | `null` | no |
 | <a name="input_tgw_route_table_association"></a> [tgw\_route\_table\_association](#input\_tgw\_route\_table\_association) | Transit Gateway Route Table to associate the VPN attachments with.  Only one route table may be associated with a VPN attachment. | `string` | `null` | no |
 | <a name="input_tgw_route_table_propagation"></a> [tgw\_route\_table\_propagation](#input\_tgw\_route\_table\_propagation) | Transit Gateway Route Tables to propagate the VPN attachments.  Multiple route tables may be selected. | `list(string)` | `[]` | no |
 | <a name="input_tgw_vpn_settings"></a> [tgw\_vpn\_settings](#input\_tgw\_vpn\_settings) | Transit Gateway VPN Connection details array of objects | <pre>list(object(<br>    {<br>      site           = string<br>      environment    = string<br>      sequence       = number<br>      bgp_asn_id     = number<br>      ip_address     = string<br>      tunnel_ips     = list(string)<br>      preshared_keys = list(string)<br>    }<br>  ))</pre> | `[]` | no |
diff --git a/vpn-transit-gateway/variables.tf b/vpn-transit-gateway/variables.tf
index bc62056..bc50d03 100644
--- a/vpn-transit-gateway/variables.tf
+++ b/vpn-transit-gateway/variables.tf
@@ -44,4 +44,8 @@ variable "tgw_route_table_propagation" {
   default     = []
 }
 
-
+variable "tgw_environment" {
+  description = "Transit Gatewway environment purpose (services, dev, test, stage, prod, cre)"
+  type        = string
+  default     = null
+}