Add details about adding/updating/changing tax ID

Add details about adding/updating/changing tax ID

Author: simon-says

src/content/docs/fundamentals/subscriptions-and-billing/update-billing-info.mdx

@@ -20,7 +20,7 @@ To access your current payment methods (primary and backup):
 
 2. Select **Manage account** > **Billing**.
 
-3. Select **Payment Info**.
+3. Select **Payment**.
 
 ## Add or update payment methods
 
@@ -86,7 +86,7 @@ To delete your current payment method:
 
 2. On the left sidebar, select **Manage account** > **Billing**.
 
-3. Select **Payment Info**.
+3. Select **Payment**.
 
 4. In the **Payment Method** card, select **Manage**.
 
@@ -122,6 +122,38 @@ To update your billing email address:
 4. For **Billing email preference**, select **Change email address**.
 5. Enter and confirm your new email and select **Save**.
 
+## Adding a TAX ID, VAT or GST number
+
+If you have not yet added a payment method follow [Add or update payment methods](#add-or-update-payment-methods) and enter your VAT/GST details when prompted on Step 5. Otherwise, follow the steps below.
+
+::note Adding a VAT or GST number cannot apply to past invoices. Once you successfully follow the process below - your VAT/GST details will be applied **only to future invoices** issued in the account.
+
+1. Log into the [Cloudflare dashboard](https://dash.cloudflare.com) and select your account.
+2. Go to **Manage Account** > **Billing**.
+3. Go to **Payment**.
+4. In the **Billing Address** card, select **Edit**.
+5. In the "VAT/GST" field enter your VAT or GST number
+
+## Changing your TAX ID, VAT or GST number
+
+::note Changing a TAX ID, VAT or GST number cannot apply to past invoices. Once you successfully follow the process below - your new VAT/GST details will be applied **only to future invoices** issued in the account.
+
+1. Log into the [Cloudflare dashboard](https://dash.cloudflare.com) and select your account.
+2. Go to **Manage Account** > **Billing**.
+3. Go to **Payment**.
+4. In the **Billing Address** card, select **Edit**.
+5. In the "VAT/GST" field edit your VAT or GST number
+
+## Removing your TAX ID, VAT or GST number
+
+::note Removing a TAX ID, VAT or GST number cannot apply to past invoices. Once you successfully follow the process below - the removal will apply **only to future invoices** issued in the account.
+
+1. Log into the [Cloudflare dashboard](https://dash.cloudflare.com) and select your account.
+2. Go to **Manage Account** > **Billing**.
+3. Go to **Payment**.
+4. In the **Billing Address** card, select **Edit**.
+5. In the "VAT/GST" field edit your VAT or GST number
+
 ## Pay an invoice manually
 
 To pay an invoice manually: