> ## Documentation Index
> Fetch the complete documentation index at: https://help.usetapp.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Update your German business tax details

> Change your saved tax number or VAT identification number in the web or mobile app.

Use **Tax IDs** to correct the tax details saved for your German business after setup. Check the values against your business records before saving. These are business details, so do not treat them as separate preferences for each shop.

## Who can do this?

The business Owner can use this page for a German shop. Managers and Staff cannot edit another person's business tax details through this workflow.

## Where

In the web app, select your German shop and open **Settings → Tax IDs**. Wait for the existing information to load before editing. If you return to Settings, check that you are signed in as the Owner and have selected a German shop.

## Update the details

1. Check the saved **Steuernummer** and VAT identification number against your business records.
2. Enter the corrected tax number. This form requires it. Enter your VAT identification number if applicable.
3. Choose **Save**. Correct any highlighted field errors and submit again.
4. Wait for **Tax IDs saved** before leaving the page.
5. Reload the page and check the saved values. Text still visible in the form immediately after saving is not a separate confirmation that it was stored.

## Clearing a saved value

Leaving the VAT identification number blank does not remove an existing saved value. Contact Tapp support if an incorrect value needs to be removed instead of replaced. Do not enter a made-up number to get past a field error.

## Platform and market notes

In the mobile app, an Owner can open **Profile settings → Fiscal compliance → Tax IDs** for the selected German shop. Wait for the saved details, correct them and choose **Save**. After the success message returns you to fiscal settings, reopen **Tax IDs** and verify the values. The tax number is required here too. Leaving the VAT ID blank does not remove a saved value.

These steps apply in Germany. Mobile setup also has a separate fiscal registration step. Saving tax details does not activate fiscal services or confirm that fiscal setup is ready. Review fiscal status separately before relying on it.

## Troubleshooting

If the page is empty, saving does nothing, or a request fails, reload it and check the existing details before retrying. Some information may already have been saved despite an error. Avoid creating another business to recover from this page. Contact Tapp support if the expected business details remain unavailable or a corrected value does not stay saved.

## Related articles

* [Set up your business and first shop](/en/get-started/set-up-business-and-first-shop)
* [Use fiscal records and exports in Germany](/en/settings/use-german-fiscal-compliance)