diff --git a/main.tf b/main.tf
index 6b43e3f..5980ffd 100644
--- a/main.tf
+++ b/main.tf
@@ -237,12 +237,17 @@ locals {
     compact([for k, v in local.az_public_route_table_ids_map : try(v[i], "")]))
   }
 
+  az_public_nat_gateway_ids_map = { for k, v in local.az_public_subnets_map : k => (
+    [for t in aws_nat_gateway.default : t.id if contains(v, t.subnet_id)])
+  }
+
   named_private_subnets_stats_map = { for i, s in var.subnets_per_az_names : s => (
     [
       for k, v in local.az_private_route_table_ids_map : {
         az             = k
         route_table_id = try(v[i], "")
         subnet_id      = try(local.az_private_subnets_map[k][i], "")
+        nat_gateway_id = try(local.az_public_nat_gateway_ids_map[k][i], "")
       }
     ])
   }
@@ -253,6 +258,7 @@ locals {
         az             = k
         route_table_id = try(v[i], "")
         subnet_id      = try(local.az_public_subnets_map[k][i], "")
+        nat_gateway_id = try(local.az_public_nat_gateway_ids_map[k][i], "")
       }
     ])
   }