To inform your customers about value-added tax (VAT), use the language editor to include a note on the Cart page. Modify or replace the Excluding tax and shipping note for this purpose using the steps outlined below.
Go to your Online Store to access your theme. Select [···] then Edit languages.
Open the Cart tab.
Locate the Tax and shipping field. This can vary depending on which theme you are using, but searching for the keyword 'tax' or 'shipping' will help locate the right field.
Use this field to add the VAT note.
Save, then Preview your theme to confirm the appearance for the Cart page note.
Additional adjustments for VAT pricing
There are other changes to the theme that help communicate VAT information.
These changes involve adjustments to the theme files, so be sure to back up your theme by duplicating it before making any changes.
Add a note to the product page
The simplest way to add a note to the Product page is by adding the note to the Description field in the product editor.
To add a note beside or near the price, consider creating a test copy of your theme (Actions > Duplicate) to try out this code adjustment.
In the Draft duplicate of your main theme, select Actions > Edit code and open the Snippets folder.
Look for a file name with 'product' or 'price' (there may be multiple). Open the file, then locate the keyword 'price' in the code. Look for a space between blocks of code and add the following code:
<p><span style=“font-size:16px; display:block;”>all prices exclude VAT 20%</span></p>
Save, then Preview the Product page to confirm its position.
Simply change the value of "all prices exclude VAT 20%" to the desired text, then apply the same changes to the main theme.
Show two prices (with and without VAT)
This would require custom modifications by a 3rd-party developer. Consider contacting Storetasker to provide a quote for these services.