Can I claim state sales tax?
If you itemize deductions on your return, you can take a deduction for state income tax paid or state sales tax paid. You can compute the amount of sales tax by adding up your receipts for the year or by using a table provided by the IRS based on your sales tax rate. In addition to this base amount you can deduct sales taxes paid on large purchases such as a car, truck, boat, etc. TurboTax will guide you through this process in Deductions & Credits.