Adding information about updating tax ID

Adding information about updating tax ID

Author: simon-says

src/content/docs/billing/update-billing-info.mdx

@@ -57,3 +57,35 @@ Your billing email address is particularly important if you have [opted into ema
 3. Go to **Invoices and documents**.
 4. From **Billing email preference**, select **Change email address**.
 5. Enter and confirm your new email address, then 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