How do I change the sales tax rate? Posted on December 8, 2016December 11, 2018 by Bulldog Tech To change your sales tax you want to log into the back office and then go to your store settings and then click on the taxes tab. From this screen you can adjust a current tax rate. Post navigationPrevious post: My system asks me if I want to “print a guest check” every time I settle an order. Whats the difference between a guest check and a receipt? Can I disable this?Next post: How do I make all take out order tax exempt?