diff --git a/caas/kubernetes/ingress/vts/modules.tf b/caas/kubernetes/ingress/vts/modules.tf
index 288bd39..dac7f45 100644
--- a/caas/kubernetes/ingress/vts/modules.tf
+++ b/caas/kubernetes/ingress/vts/modules.tf
@@ -6,7 +6,7 @@ module "filter-tags" {
   filter_tags_use_defaults    = "${var.filter_tags_use_defaults}"
   filter_tags_custom          = "${var.filter_tags_custom}"
   filter_tags_custom_excluded = "${var.filter_tags_custom_excluded}"
-  extra_tags                  = ["!upstream:upstream-default-backend"]
+  extra_tags_excluded         = ["upstream:upstream-default-backend"]
 }
 
 module "filter-tags-5xx" {
@@ -17,7 +17,8 @@ module "filter-tags-5xx" {
   filter_tags_use_defaults    = "${var.filter_tags_use_defaults}"
   filter_tags_custom          = "${var.filter_tags_custom}"
   filter_tags_custom_excluded = "${var.filter_tags_custom_excluded}"
-  extra_tags                  = ["!upstream:upstream-default-backend,status_code:5xx"]
+  extra_tags                  = ["status_code:5xx"]
+  extra_tags_excluded         = ["upstream:upstream-default-backend"]
 }
 
 module "filter-tags-4xx" {
@@ -28,5 +29,6 @@ module "filter-tags-4xx" {
   filter_tags_use_defaults    = "${var.filter_tags_use_defaults}"
   filter_tags_custom          = "${var.filter_tags_custom}"
   filter_tags_custom_excluded = "${var.filter_tags_custom_excluded}"
-  extra_tags                  = ["!upstream:upstream-default-backend,status_code:4xx"]
+  extra_tags                  = ["status_code:4xx"]
+  extra_tags_excluded         = ["upstream:upstream-default-backend"]
 }
diff --git a/caas/kubernetes/pod/modules.tf b/caas/kubernetes/pod/modules.tf
index 9232867..72b5b69 100644
--- a/caas/kubernetes/pod/modules.tf
+++ b/caas/kubernetes/pod/modules.tf
@@ -16,7 +16,7 @@ module "filter-tags-phase" {
   filter_tags_use_defaults    = "${var.filter_tags_use_defaults}"
   filter_tags_custom          = "${var.filter_tags_custom}"
   filter_tags_custom_excluded = "${var.filter_tags_custom_excluded}"
-  extra_tags                  = ["!phase:pending,!phase:running,!phase:succeeded,!phase:unknown"]
+  extra_tags_excluded         = ["phase:pending,phase:running,phase:succeeded,phase:unknown"]
 }
 
 module "filter-tags-nocrashloopbackoff" {
@@ -27,7 +27,7 @@ module "filter-tags-nocrashloopbackoff" {
   filter_tags_use_defaults    = "${var.filter_tags_use_defaults}"
   filter_tags_custom          = "${var.filter_tags_custom}"
   filter_tags_custom_excluded = "${var.filter_tags_custom_excluded}"
-  extra_tags                  = ["!reason:crashloopbackoff"]
+  extra_tags_excluded         = ["reason:crashloopbackoff"]
 }
 
 module "filter-tags-crashloopbackoff" {
diff --git a/common/filter-tags/README.md b/common/filter-tags/README.md
index f79e8c4..41fc271 100644
--- a/common/filter-tags/README.md
+++ b/common/filter-tags/README.md
@@ -29,7 +29,8 @@ Creates all kinds of filters tags patterns depending of the monitor type and dir
 | Name | Description | Type | Default | Required |
 |------|-------------|:----:|:-----:|:-----:|
 | environment | Architecture Environment | string | - | yes |
-| extra_tags | Extra optional tags added for default filtering when filter_tags_use_defaults is true (i.e. ["tag1:val1", "tag2:val2"]) | list | `[]` | no |
+| extra_tags | Extra optional tags added to include filtering in any case (i.e. [\"tag1:val1\", \"tag2:val2\"]) | list | `[]` | no |
+| extra_tags_excluded | Extra optional tags added to exclude filtering in any case (i.e. [\"tag1:val1\", \"tag2:val2\"]) | list | `[]` | no |
 | filter_tags_custom | Tags used for custom filtering when filter_tags_use_defaults is false (i.e. "tag1:val1,tag2:val2") | string | `*` | no |
 | filter_tags_custom_excluded | Tags excluded for custom filtering when filter_tags_use_defaults is false (i.e. "tag1:val1,tag2:val2") | string | `` | no |
 | filter_tags_use_defaults | Use default filter tags convention | string | `true` | no |
@@ -46,4 +47,5 @@ Creates all kinds of filters tags patterns depending of the monitor type and dir
 ## Related documentation
 
 Datadog API type of monitor: [https://docs.datadoghq.com/api/?lang=python#create-a-monitor](https://docs.datadoghq.com/api/?lang=python#create-a-monitor)
+Terraform guide: [https://www.terraform.io/docs/configuration-0-11/interpolation.html](https://www.terraform.io/docs/configuration-0-11/interpolation.html)
 
diff --git a/common/filter-tags/inputs.tf b/common/filter-tags/inputs.tf
index 9c34609..c4b8283 100644
--- a/common/filter-tags/inputs.tf
+++ b/common/filter-tags/inputs.tf
@@ -24,7 +24,13 @@ variable "filter_tags_custom_excluded" {
 }
 
 variable "extra_tags" {
-  description = "Extra optional tags added for default filtering when filter_tags_use_defaults is true (i.e. [\"tag1:val1\", \"tag2:val2\"])"
+  description = "Extra optional tags added to include filtering in any case (i.e. [\"tag1:val1\", \"tag2:val2\"])"
+  type        = "list"
+  default     = []
+}
+
+variable "extra_tags_excluded" {
+  description = "Extra optional tags added to exclude filtering in any case (i.e. [\"tag1:val1\", \"tag2:val2\"])"
   type        = "list"
   default     = []
 }
diff --git a/common/filter-tags/locals.tf b/common/filter-tags/locals.tf
index d153e77..1a3d95e 100644
--- a/common/filter-tags/locals.tf
+++ b/common/filter-tags/locals.tf
@@ -1,7 +1,8 @@
 locals {
   including_default_list = "${compact(concat(split(",", format("dd_monitoring:enabled,dd_%s:enabled,env:%s", var.resource, var.environment)), compact(var.extra_tags)))}"
-  excluding_list         = "${compact(split(",", var.filter_tags_use_defaults == "true" ? "" : join(",", split(",", "${var.filter_tags_custom_excluded}"))))}"
+  including_custom_list  = "${compact(concat(split(",", var.filter_tags_custom), compact(var.extra_tags)))}"
+  excluding_list         = "${compact(split(",", var.filter_tags_use_defaults == "true" ? join(",", compact(var.extra_tags_excluded)) : join(",", concat(split(",", var.filter_tags_custom_excluded), compact(var.extra_tags_excluded)))))}"
 
-  including_string = "${var.filter_tags_use_defaults == "true" ? join(",", local.including_default_list) : "${var.filter_tags_custom}"}"
+  including_string = "${var.filter_tags_use_defaults == "true" ? join(",", local.including_default_list) : join(",", local.including_custom_list)}"
   excluding_string = "${join(",", local.excluding_list)}"
 }