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Filing a Joint Return: Filing Status and Dependents (2025 IRS Guide)

This guide covers “Filing a Joint Return” within filing status and dependents. The following material presents the IRS treatment of this topic, including the qualifications, exceptions, and examples in the source section. Read the rules alongside the facts of your own situation before deciding what to report, deduct, or document.

Adapted from Publication 501 (2025), Dependents, Standard Deduction, and Filing Information, published by the Internal Revenue Service. This guide retains the source edition’s years, amounts, deadlines, and examples. It is guidance for that edition, not a statement that the same figures apply to every tax year.

Context for these rules

You can choose married filing jointly as your filing status if you are considered married and both you and your spouse agree to file a joint return. On a joint return, you and your spouse report your combined income and deduct your combined allowable expenses. You can file a joint return even if one of you had no income or deductions.

If you and your spouse decide to file a joint return, your tax may be lower than your combined tax for the other filing statuses. Also, your standard deduction (if you don’t itemize deductions) may be higher, and you may qualify for tax benefits that don’t apply to other filing statuses.

On Form 1040 or 1040-SR, show your filing status as married filing jointly by checking the “Married filing jointly” box on the Filing Status line near the top of the form. Use the Married filing jointly column of the Tax Table, or Section B of the Tax Computation Worksheet, to figure your tax.

.If you and your spouse each have income, you may want to figure your tax both on a joint return and on separate returns (using the filing status of married filing separately). You can choose the method that gives the two of you the lower combined tax unless you are required to file separately..

Filing a Joint Return

Both you and your spouse must include all of your income and deductions on your joint return.

Accounting period.

Both of you must use the same accounting period, but you can use different accounting methods.

Joint responsibility.

Both of you may be held responsible, jointly and individually, for the tax and any interest or penalty due on your joint return. This means that if one spouse doesn’t pay the tax due, the other may have to. Or, if one spouse doesn’t report the correct tax, both spouses may be responsible for any additional taxes assessed by the IRS. One spouse may be held responsible for all the tax due even if all the income was earned by the other spouse.

You may want to file separately if:

  • You believe your spouse isn’t reporting all of their income, or

  • You don’t want to be responsible for any taxes due if your spouse doesn’t have enough tax withheld or doesn’t pay enough estimated tax.

Divorced taxpayer.

You may be held jointly and individually responsible for any tax, interest, and penalties due on a joint return filed before your divorce. This responsibility may apply even if your divorce decree states that your former spouse will be responsible for any amounts due on previously filed joint returns.

Relief from joint responsibility.

In some cases, one spouse may be relieved of joint responsibility for tax, interest, and penalties on a joint return for items of the other spouse that were incorrectly reported on the joint return. You can ask for relief no matter how small the liability.

There are three types of relief available.

  1. Innocent spouse relief.

  2. Separation of liability (available only to joint filers whose spouse has died, or who are divorced, who are legally separated, or who haven’t lived together for the 12 months ending on the date the election for this relief is filed).

  3. Equitable relief.

You must file Form 8857, Request for Innocent Spouse Relief, to request relief from joint responsibility. Pub. 971 explains the kinds of relief and who may qualify for them.

Signing a joint return.

For a return to be considered a joint return, both spouses must generally sign the return.

Spouse died before signing.

If your spouse died before signing the return, the executor or administrator must sign the return for your spouse. If neither you nor anyone else has been appointed as executor or administrator, you can sign the return for your spouse. Check the “Deceased” box at the top of page 1 of Form 1040 or 1040-SR and enter the date your spouse died in the entry spaces after “Spouse.” Enter “Filing as surviving spouse” in the area where you sign the return.

Spouse away from home.

If your spouse is away from home, you should prepare the return, sign it, and send it to your spouse to sign so it can be filed on time.

Injury or disease prevents signing.

If your spouse can’t sign because of injury or disease and tells you to sign for them, you can sign your spouse’s name in the proper space on the return followed by the words “By (your name), Spouse.” Be sure to sign in the space provided for your signature. Attach a dated statement, signed by you, to the return. The statement should include the form number of the return you are filing, the tax year, and the reason your spouse can’t sign, and it should state that your spouse has agreed to your signing for them.

Signing as guardian of spouse.

If you are the guardian of your spouse who is mentally incompetent, you can sign the return for your spouse as guardian.

Spouse in combat zone.

You can sign a joint return for your spouse if your spouse can’t sign because they are serving in a combat zone (such as the Persian Gulf area, Serbia, Montenegro, Albania, or Afghanistan), even if you don’t have a power of attorney or other statement. Attach a signed statement to your return explaining that your spouse is serving in a combat zone. For more information on special tax rules for persons who are serving in a combat zone, or who are in missing status as a result of serving in a combat zone, see Pub. 3.

Power of attorney (POA).

In order for you to sign a return for your spouse in any of these cases, you must attach to the return a POA that authorizes you to sign for your spouse. You can use a POA that states that you have been granted authority to sign the return, or you can use Form 2848. Part I of Form 2848 must state that you are granted authority to sign the return.

Nonresident alien or dual-status alien.

Generally, a married couple can’t file a joint return if either spouse is a nonresident alien at any time during the year. However, you and your spouse can choose to be treated as U.S. residents for the entire year and file a joint return if one spouse was a nonresident alien at the end of the taxable year (the nonresident spouse) and the other was a U.S. citizen or resident at the end of the taxable year. This choice remains in effect in subsequent years until terminated. You and your spouse can also choose to file as U.S. residents for the entire year if both of you are U.S. citizens or residents at the end of the year and either (or both) of you were a nonresident at the beginning of the year (the dual-status spouse(s)). You can only make this choice for 1 year, and it doesn’t apply to any future years.

If you and your spouse are making either of these choices to be treated as U.S. residents for 2025, check the box in the Filing Status section and enter the name of the nonresident spouse or dual-status spouse(s) (whichever applies to you) in the entry space. Also check the box and enter their name if you and your nonresident spouse made the choice to be treated as residents in a prior year and the choice remains in effect. See the Instructions for Form 1040 and Pub. 519 for more information on how to make this choice.

Using the guidance

Keep the documents that establish the dates, amounts, and circumstances described above. References to other chapters, forms, worksheets, or earlier and later sections refer to the linked IRS publication. Check the full publication and its updates before relying on a rule for a different tax year or a situation not addressed here.

Sources and further reading

The cited U.S. government text is in the public domain. Source accessed October 28, 2026. Fynoptic has organized this material for educational use and is independent of, and not endorsed by, the IRS.

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