Married taxpayers filing separate returns cannot make the standard-versus-itemized choice independently when one spouse itemizes. The IRS says that if you are married filing separately, you cannot take the standard deduction if your spouse itemizes; both spouses must choose the same method. The rule links the returns at this decision point. A separate return does not, by itself, permit one spouse to use the standard deduction while the other lists deductible expenses one by one.
The choice is linked across two returns
The direct answer is no: under the IRS-listed rule, a married taxpayer filing separately cannot claim the standard deduction if the spouse itemizes. The agency states that both spouses must choose the same method. The constraint applies to the method, whether standard deduction or itemizing, rather than requiring the spouses to file a joint return. Internal Revenue Service
For example, imagine two spouses filing separate returns for the same tax year. If one lists qualifying deductions individually, the other cannot claim the standard deduction on their separate return. They must also itemize. Conversely, if one spouse uses the standard deduction, the other must use that method too. This hypothetical illustrates the linked choice; it does not determine which method produces a lower tax for either person.
What the two methods mean
The standard deduction is a set amount based on filing status. Itemizing means subtracting eligible expenses and losses individually. The IRS says that when deductible expenses and losses exceed the standard deduction, itemizing may save money; tax software can compare the options using the taxpayer’s information. But for spouses filing separately, the comparison has to account for the shared method choice. Internal Revenue Service
The deduction method is separate from the broader question of which expenses qualify. The IRS lists items such as charitable donations, home mortgage interest, certain taxes, and medical and dental expenses above a specified share of adjusted gross income among potential itemized deductions. The page also identifies some deductions available whether a taxpayer takes the standard deduction or itemizes. Those categories do not change the rule linking spouses’ method choice. Internal Revenue Service
A practical comparison, without a shortcut
Suppose, hypothetically, one spouse’s eligible expenses appear large enough to make itemizing attractive, while the other spouse has few expenses to list. The second spouse still cannot simply take the standard deduction on a separate return if the first itemizes. The couple’s comparison must consider the allowed paired approaches: both take the standard deduction, or both itemize. The hypothetical provides no dollar figures because the IRS rule is about the method, and the result depends on each return’s facts.
This means comparing only one person’s expenses with that person’s standard deduction can miss the constraint. A method that appears advantageous on one separate return may affect the other spouse’s available choice. The IRS page says software can walk taxpayers through expenses and losses to show which option gives the lowest tax; the linked-method rule remains part of that calculation. Internal Revenue Service
Keep the tax year in view
The IRS page lists standard deduction amounts for 2025, including $15,750 for single or married filing separately and $31,500 for married couples filing jointly or qualifying surviving spouses. Those are explicitly 2025 amounts, not a statement of 2026 law. The method rule is also stated on that page, but the listed dollar figures should be read with their tax-year label attached. Internal Revenue Service
The separate IRS standard-deduction tool says its conclusions depend on the information entered and is designed for U.S. citizens or resident aliens for the entire tax year in question, with a corresponding condition for a spouse. It directs taxpayers with other residency situations to international-taxpayer information. That context reinforces why a general rule about the method should not be mistaken for a personalized calculation or an eligibility determination. Internal Revenue Service
Sources & further reading
- Credits and deductions for individuals ↗Internal Revenue Service
- Standard deduction ↗Internal Revenue Service
