diff --git a/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/billing.json b/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/billing.json
index e4b9fcd940d2..95c0890e34e7 100644
--- a/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/billing.json
+++ b/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/billing.json
@@ -150,6 +150,53 @@
         }
       }
     },
+    "/providers/Microsoft.Billing/billingAccounts/{billingAccountName}/validateAddress": {
+      "post": {
+        "tags": [
+          "BillingAccounts"
+        ],
+        "x-ms-examples": {
+          "BillingAccountValidateAddress": {
+            "$ref": "./examples/BillingAccountValidateAddress.json"
+          },
+          "BillingAccountValidateAddressInvalid": {
+            "$ref": "./examples/BillingAccountValidateAddressInvalid.json"
+          }
+        },
+        "operationId": "BillingAccountsValidateAddress_Post",
+        "description": "Validates the address.",
+        "parameters": [
+          {
+            "$ref": "#/parameters/apiVersionParameter"
+          },
+          {
+            "$ref": "#/parameters/billingAccountNameParameter"
+          },
+          {
+            "name": "address",
+            "in": "body",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/Address"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK. The request has succeeded.",
+            "schema": {
+              "$ref": "#/definitions/ValidateAddressResponse"
+            }
+          },
+          "default": {
+            "description": "Error response describing why the operation failed.",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
+          }
+        }
+      }
+    },
     "/providers/Microsoft.Billing/billingAccounts/{billingAccountName}/billingProfiles/{billingProfileName}/availableBalance/default": {
       "get": {
         "tags": [
@@ -3275,6 +3322,39 @@
         }
       }
     },
+    "ValidateAddressResponse": {    
+    "type":"object",
+    "description" :" Result of the address validation",
+    "properties" : {
+      "status": {
+        "description": "status of the address validation.",
+        "$ref": "#/definitions/AddressValidationStatus"
+      },
+      "suggestedAddresses": {
+        "description": "list of suggested addresses.",
+        "type": "array",
+        "items": {
+          "$ref": "#/definitions/Address"
+        }
+      },
+      "validationMessage" : {
+        "description": "Validation error message.",
+        "type": "string"
+       }
+      }
+    },
+    "AddressValidationStatus": {
+      "type": "string",
+      "description": "Status of the address validation response.",
+      "enum": [
+        "Valid",
+        "Invalid"
+      ],
+      "x-ms-enum": {
+        "name": "addressValidationStatus",
+        "modelAsString": true
+      }
+    }, 
     "InitiateTransferProperties": {
       "type": "object",
       "description": "Request parameters to initiate transfer.",
diff --git a/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/examples/BillingAccountValidateAddress.json b/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/examples/BillingAccountValidateAddress.json
new file mode 100644
index 000000000000..24141213e1c2
--- /dev/null
+++ b/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/examples/BillingAccountValidateAddress.json
@@ -0,0 +1,29 @@
+{
+  "parameters": {
+    "api-version": "2018-11-01-preview",
+    "billingAccountName": "00000000-0000-0000-0000-000000000000",
+    "address": {
+      "addressLine1": "555 110th Ave NE",
+      "city": "bellevue",
+      "region": "wa",
+      "postalCode": "98004",
+      "country": "us"
+      }
+  },
+  "responses": {
+    "200": {
+      "body": {
+          "status": "Valid",      
+          "suggestedAddresses": [
+            {
+              "country": "US",
+              "region": "WA",
+              "city": "Bellevue",
+              "addressLine1": "555 110th Ave NE",
+              "postalCode": "98004-5124"
+            }
+          ]
+       }
+     }
+  }
+}
\ No newline at end of file
diff --git a/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/examples/BillingAccountValidateAddressInvalid.json b/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/examples/BillingAccountValidateAddressInvalid.json
new file mode 100644
index 000000000000..fb9f4c05d3c2
--- /dev/null
+++ b/specification/billing/resource-manager/Microsoft.Billing/preview/2018-11-01-preview/examples/BillingAccountValidateAddressInvalid.json
@@ -0,0 +1,44 @@
+{
+  "parameters": {
+    "api-version": "2018-11-01-preview",
+    "billingAccountName": "00000000-0000-0000-0000-000000000000",
+    "address": {
+      "addressLine1": "55 110th Ave NE",
+      "city": "bellevue",
+      "region": "wa",
+      "postalCode": "98004",
+      "country": "us"
+      }
+  },
+  "responses": {
+    "200": {
+      "body": {
+          "status": "Invalid",      
+          "suggestedAddresses": [
+            {
+              "country": "US",
+              "region": "WA",
+              "city": "Bellevue",
+              "addressLine1": "100 110th Ave NE",
+              "postalCode": "98004"
+            },
+            {
+              "country": "US",
+              "region": "WA",
+              "city": "Bellevue",
+              "addressLine1": "102 110th Ave NE",
+              "postalCode": "98004-5804"
+            },
+            {
+              "country": "US",
+              "region": "WA",
+              "city": "Bellevue",
+              "addressLine1": "104 110th Ave NE",
+              "postalCode": "98004-5804"
+            }
+          ],
+          "validationMessage" : "Invalid address"
+       }
+     }
+  }
+}
\ No newline at end of file