Who Should Itemize(p141)

You should itemize deductions if your total deductions are more than the standard deduction amount. Also, you should itemize if you do not qualify for the standard deduction, as discussed earlier under Persons not eligible for the standard deduction.

You should first figure your itemized deductions and compare that amount to your standard deduction to make sure you are using the method that gives you the greater benefit.

You may benefit from itemizing your deductions on Schedule A (Form 1040) if you:

• Do not qualify for the standard deduction, or the amount you can claim is limited,
• Had large uninsured medical and dental expenses during the year,
• Paid interest and taxes on your home,
• Had large unreimbursed employee business expenses or other miscellaneous deductions,
• Had large uninsured casualty or theft losses,
• Made large contributions to qualified charities, or
• Have total itemized deductions that are more than the standard deduction to which you otherwise are entitled.

These deductions are explained in chapters 21–28.

If you decide to itemize your deductions, complete Schedule A and attach it to your Form 1040. Enter the amount from Schedule A, line 29, on Form 1040, line 40.

Even if your itemized deductions are less than your standard deduction, you can elect to itemize deductions on your federal return rather than take the standard deduction. You may want to do this if, for example, the tax benefit of itemizing your deductions on your state tax return is greater than the tax benefit you lose on your federal return by not taking the standard deduction. To make this election, you must check the box on line 30 of Schedule A.

If you do not itemize your deductions and later find that you should have itemized — or if you itemize your deductions and later find you should not have — you can change your return by filing Form 1040X, Amended U.S. Individual Income Tax Return. See Amended Returns and Claims for Refund in chapter 1 for more information on amended returns.

You can change methods of taking deductions only if you and your spouse both make the same changes. Both of you must file a consent to assessment for any additional tax either one may owe as a result of the change.

You and your spouse can use the method that gives you the lower total tax, even though one of you may pay more tax than you would have paid by using the other method. You both must use the same method of claiming deductions. If one itemizes deductions, the other should itemize because he or she will not qualify for the standard deduction. See Persons not eligible for the standard deduction, earlier.