Most people typically pay more in state income taxes than in state and local sales taxes. But double-check just in case. Depending on your state's income tax rate and how much you made (and paid), your sales tax amount could be greater. You can only deduct income or sales taxes, but not both.
But regardless of your state's tax collection practices, to take full advantage of the sales tax deduction, you have to know exactly how to file for it and just which taxes you can claim.
Choosing your tax deduction method
The process begins with your answers to two filing questions. First, do you plan to itemize? If so, then which write-off -- sales taxes or income taxes -- will give you the biggest break?
Deciding whether to itemize deductions or claim the standard amount is always a key tax-time choice. The IRS says that most people take the standard deduction. It's easy to claim; there are no forms or work sheets to fill out and each year the standard deduction increases, thanks to inflation adjustments.
But if you use the standard deduction, you can't take the sales tax break. To claim the sales taxes you paid, you must itemize.
If sales taxes are your only deductible expense, then it's not worth it to itemize. This one itemized deduction will likely be much less than your standard deduction, and you always want to take the largest tax deduction amount you're allowed.
Taxpayers who itemize expenses will have to decide which option -- deducting sales taxes or income taxes -- will give them the biggest break.
Writing off the right amount
Then there's the issue of just how much in sales taxes you can claim. If you have the documentation, there is no limit on the deduction amount.
Even if you don't have all your receipts, you still might be able to re-create many of your sales tax payments. William Abrams, a partner in the law firm Abrams Garfinkel Margolis Bergson LLP, with offices in California and New York, notes that many types of records, such as credit card statements, are available online. By accessing them, he says, taxpayers could improve the accuracy of their annual sales tax computations.