Setting up tax details is managed on account level. This is where you will have to assign the tax to each rate plan:
Go to Account Details (found under “Settings” > “Account” in your side menu).
A blank row will appear where you can add your Tax Details.
3. Click Save at the bottom of the page
4 . Go to Search Rates (found under “Operations” > “Rates” in your side menu).
5. Click on the rate ID
6. In the “Details” tab you can select a tax code - screenshot below
7. Click Save Rate