Sales tax paid on a vacation home is not allowed as an itemized deduction for specified items on Schedule A, Line 5.

Sales tax would not be deductible if the vacation home is an actual piece of real property. If the vacation home was a recreational vehicle, then you would be able to deduct the sales tax. 

To see the specified items that would be allowed:

1. From within your TaxAct return (Online or Desktop), click Federal. On smaller devices, click the menu icon in the upper left-hand corner, then select Federal
2. Click Itemized or Standard Deductions in the Federal Quick Q&A Topics menu to expand the category and then click Taxes paid
3. On the screen titled Do you want to enter state and local sales tax information? click Yes
4. Click Table Amount
5. On the screen titled Enter sales tax you paid on specified items, click View More (Desktop users click More Info)