So I figured out the way to accomplish what I needed.
First, I went to Line Item Types:Product and added a boolean called "Add Tax at Checkout".
Second, I went to every product type and added the same field.
Third, created a rule that reacted after a product is added to the cart. It required three conditions: 1. that the product had the field "Add Tax at Checkout". 2. that the commerce line item had the field "Add Tax at Checkout". 3. That the field of the product was checked.
Finally, created an action in the rule to set the value for the commerce-line-item: "Add Tax at Checkout" to the checked value.
Fourth, in the tax rules, I clicked on the component and included two conditions, that the commerce-line-item had the field "add Tax at Checkout" and that the field was set as checked.