I figured out a way to add tax in the checkout manually when it does not add automatically. I did everything in the solution and it still would not automatically add tax. Here is the manual solution: 1. In the Zettle app, Add the products you are selling. 2. Instead of clicking the purple "Charge" button at the bottom, go to the shopping cart in the upper right and click on it. 3. In the shopping cart, click on each product individually and click on the "Select tax" button. 4. You can then manually add the tax to the product there and then you can check out your customer. Hope this helps! Cheers!!
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