Filing Status: How to Choose the Right One

Your filing status is the first choice on Form 1040, and it drives almost everything after it: the standard deduction, the tax brackets, and whether you can claim certain credits. If more than one status fits your situation, the IRS says to choose the one that results in the lowest tax. This guide explains the five federal filing statuses, the tests behind each, and the mistakes we see most often.

The five filing statuses

The amounts come from the IRS's inflation-adjustment guidance for each year. Extra amounts for age 65 or older or blindness are covered in our guide to standard vs. itemized deductions, and the new senior deduction in our page on new deductions for tips, overtime and seniors.

How your marital status is decided

You are unmarried for the whole year if, on the last day of the year, you are unmarried or legally separated under a divorce or separate maintenance decree. You are married for the whole year if you are married on that date, even if you live apart without a decree. If your spouse died during the year, you are considered married for the whole year.

Married filing jointly or separately

On a joint return you report both spouses' income and deductions together. Joint filing usually produces the lower combined tax, and it opens up credits that separate filers cannot claim. The tradeoff is joint responsibility: each spouse can be held responsible for the full tax, interest and penalties on the return, even if the other spouse earned the income. Relief may be available in some cases; see innocent spouse relief.

Filing separately can make sense if you do not want to be responsible for your spouse's tax, or if separate AGIs produce a larger deduction for AGI-limited items such as medical expenses. The IRS lists the costs of filing separately, including:

• You generally cannot claim the education credits or the student loan interest deduction.
• You generally cannot claim the earned income credit unless you meet the special rules for separated spouses.
• If your spouse itemizes, you cannot take the standard deduction.
• Your capital loss deduction limit is $1,500 instead of $3,000.
• If you lived with your spouse at any time during the year, more of your Social Security benefits can be taxed.
• The child tax credit and credit for other dependents phase out at income levels half those for a joint return.

Head of household

This status has a lower rate schedule and a higher standard deduction than single. To qualify you must meet all three tests:

1. You are unmarried or considered unmarried on the last day of the year.
2. You paid more than half the cost of keeping up your home for the year.
3. A qualifying person lived with you for more than half the year, apart from temporary absences such as school.

A dependent parent is the main exception to the "lived with you" rule, but you must still pay more than half the cost of keeping up your parent's main home. A friend or unrelated housemate does not qualify even if you support them. Costs of "keeping up a home" include rent, mortgage interest, property taxes, utilities, repairs, insurance and food eaten at home. Clothing, education, medical treatment and vacations do not count.

Qualifying surviving spouse

If your spouse died in 2023 or 2024 and you did not remarry, you may be able to use this status for 2025. You must have a child or stepchild you can claim as a dependent (or could except for narrow reasons), the child must have lived with you all year, and you must have paid more than half the cost of keeping up the home. The status gives you joint-return tax rates and the highest standard deduction. The year of your spouse's death is the last year you can file a joint return with them.

Example

Example: Maria is unmarried, and her 12-year-old son lived with her all of 2025. She paid more than half of the household costs, so she qualifies for head of household. Her standard deduction is $23,625 rather than $15,750.

Illinois and other states

Illinois generally requires the same filing status as your federal return. The Illinois Department of Revenue notes exceptions, including that a federal qualifying surviving spouse files as "widowed" on the Illinois return. See our Illinois tax guide. Community property states add special rules for married people who file separately.

How we can help

We can compare your tax under joint and separate filing, check whether you meet the head of household tests, and document your position before you file. For immigrants and Indian-American households with a nonresident spouse, we also review the residency rules for resident, nonresident and dual-status filers. Learn more about individual tax preparation or contact us.

Frequently asked questions

General information only, not tax, legal or accounting advice for your situation. Rules, limits and deadlines change; confirm the current rules with the official source or a qualified professional before you act. Reading this page does not create a professional relationship with CPA Tax Payroll and Accounting Corp.