In 2018, I made and kept a resolution to keep track of all sales taxes I paid on every transaction. Using Quicken makes this easier, but it still takes effort. Because of this, I now know that I paid just under $1,000 in sales tax last year. However, it turns out that the "standard sales tax" deduction is apparently more than this, so it won't do me extra good on my income tax, even assuming that itemizing deductions is worth doing, which it rarely has been. Still, I'm glad to know how much I'm paying.