How do I calculate sales tax out from my total income

[DawnC]

You can use the Sales Tax Calculator within TurboTax in the Sales Tax entry section or you can use the one on the IRS website.  

If you're itemizing, you get to choose between deducting your state and local income taxes or your state sales taxes. You cannot claim both, and you can't claim either one if you're taking the standard deduction.

There are two methods for coming up with the amount of sales taxes you paid during the year: add up all your receipts (actual expenses) or use the predetermined IRS amount which is based on your sales tax rate.