My website shopping cart is not applying taxes correctly, what do I do?

First, make sure that the product(s) in question have the proper tax setup. Go to Products > Products, search for the product and click to open it, then go to the Advanced tab and make sure the proper checkboxes for tax are set. If you make any changes, be sure to click Save at the bottom. If your state tax rate has changed and you need to adjust it, click on the gear-shaped button on the far right side of the blue bar and go to Settings > POS Settings > Taxes and update your default product tax to the correct rate, then Save. If you are needing to adjust your taxes for Classes, that same area will have your default Class tax rates, and they can be adjusted then saved in the same way.