You cannot take both the standard deduction and itemize your deductions on the same tax return. For each tax year, you must choose one method: either take the standard deduction or itemize your deductions. This choice is made on Form 1040 (or 1040-SR). If you choose to itemize, you must complete Schedule A..
When to Choose One Method Over the Other
- Itemize deductions if your total itemized deductions (such as medical expenses, state and local taxes, charitable contributions, mortgage interest, etc.) exceed the standard deduction amount for your filing status
- Take the standard deduction if it is greater than your total itemized deductions. This is typically the case for many taxpayers, especially those with moderate or limited deductible expenses.
Special Circumstances Where You Might Elect to Itemize
- You may not take both methods or mix them for federal tax purposes. The IRS does not allow an election to itemize based solely on state tax benefits. Your federal return must use one consistent method.
Who Cannot Take the Standard Deduction
- Taxpayers who are married filing separately cannot take the standard deduction if their spouse itemizes deductions.
- Nonresident aliens and certain dual-status aliens are generally not eligible for the standard deduction.
Taxpayers filing a short tax year return due to a change in accounting period may not qualify for the standard deduction.
Changing Your Mind After Filing
- If you initially choose the standard deduction but later determine itemizing would have been more beneficial (or vice versa), you may correct this by filing an amended return using Form 1040-X, subject to IRS rules and deadlines.
- For married filing separately, if one spouse itemizes, the other spouse must also itemize and cannot claim the standard deduction.
Source:
Publication 501
Schedule A (Form 1040)
Disclaimer: Always verify your tax situation with the most current IRS forms, instructions, and publications. For complex situations, consult a tax professional or CPA.