> For the complete documentation index, see [llms.txt](https://docs.whalesync.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.whalesync.com/resources/support/how-to-update-your-tax-id-number.md).

# How to update your tax ID number

If you're a business, you can update your tax ID number in Whalesync's billing portal. You may need this if you are in a country where businesses are not normally charged VAT, such as the EU.

To do this:

1. Go to the [Whalesync dashboard](https://app.whalesync.com)
2. Click [*Manage subscription*](https://app.whalesync.com/subscription/manage)
3. Under *Billing information*, click *Update information*

<figure><img src="/files/a7PrcXPkQ5m463dmazzL" alt="" width="375"><figcaption><p>Update billing information in the subscription portal</p></figcaption></figure>

Scroll to the bottom and you can add your tax ID number.