Why can't I change the estimated sales tax?
Your estimated sales tax (using EasyGuide) is actually a calculation. It’s based on your family size, your state, and which city/county you live in. The estimate won’t change unless one of those change.
If you don’t want to use EasyGuide and have all of your receipts, you can choose Enter All My Receipts and tell us the grand total of all sales tax you paid instead.