You can claim sales taxes as an itemized deduction on Schedule A. For car or boat sales taxes paid you need to use the Major Purchase section of sales taxes.
See this TurboTax support FAQ for sales taxes - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-credits-deductions/claim-sales-tax-d...
To enter your sales taxes
Click on Federal Taxes (Personal using Home and Business)
Click on Deductions and Credits
Click on I'll choose what I work on (if shown)
Scroll down to Estimates and Other Taxes Paid
On Sales Taxes, click the start or update button
Or enter sales tax in the Search box located in the upper right of the program screen. Click on Jump to sales tax
