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By Julie Fielder
Attorney

When a loved one passes away, there’s often a long list of legal and financial tasks to take care of. One question that often comes up is whether you must file a final income tax return on their behalf. The short answer is usually yes, but how and when you do it depends on the situation.

Who Is Responsible for Filing the Final Return?

The responsibility for filing the deceased person’s final income tax return generally falls on the executor or personal representative of the estate. If no one has been appointed, a survivor or family member who handles the person’s affairs may file instead.

The IRS treats the deceased individual as if they were alive for the part of the year before their death. That means income earned up to the date of death must be reported.

What the Final Return Should Include

The final federal tax return, known as Form 1040, covers the period from January 1 through the date of death. You’ll include income, deductions, and credits just as you would for any taxpayer. California may also require a state income tax return (Form 540).

Common items to report include:

  • Wages, pensions, and Social Security benefits received before death
  • Dividends, interest, and investment income
  • Business or rental income earned before death
  • Deductions for medical expenses, mortgage interest, or charitable donations

If the deceased was married, their surviving spouse may be able to file a joint return for that year.

Deadlines and Filing Steps

The final return is due by the regular tax filing deadline of the following year (typically April 15) unless an extension is requested.

Here’s the general process:

  1. Gather W-2s, 1099s, and other income statements.
  2. Mark “Deceased” and the date of death at the top of the return.
  3. Attach Form 1310 if you’re claiming a refund and are not the surviving spouse.
  4. Sign the return as the executor or personal representative.
  5. File both federal and California state returns if applicable.

Estate and Trust Income Tax Returns

If the deceased person’s estate continues to earn income after death, for example, from investments, rent, or business operations, a separate estate income tax return (Form 1041) may also be required.

This is different from the final individual return and applies to income received after the date of death. Estates that earn more than $600 in gross income typically must file.

Special Considerations for California Residents

California follows federal rules in most cases but has its own filing requirements. Executors should also be aware of:

  • Property tax reassessment exclusions for transfers to children or spouses
  • Community property rules, which can affect how income and deductions are split
  • Possible fiduciary income tax filing if the estate remains open

Working with a California estate planning attorney can help ensure compliance with both state and federal tax obligations.

What Happens If You Don’t File?

Failing to file a required final return can lead to IRS penalties, interest, and complications in closing the estate. It may also delay probate or the transfer of assets to beneficiaries. Filing correctly ensures the estate can be settled without unnecessary legal or financial hurdles.

Professional Help With Estate Administration and Final Tax Filings

Settling a loved one’s estate is never easy, and the tax responsibilities can feel like one more burden during a difficult time. At Horizon Elder Law & Estate Planning, Inc., we guide families through every stage of estate administration, including understanding when and how to file final tax returns. Our team helps you stay compliant, protect estate assets, and move forward with confidence.

Contact Horizon Elder Law & Estate Planning, Inc. today to schedule a consultation and get the support you need with probate, estate administration, and tax matters in California.

Frequently Asked Questions

Do all estates have to file a final income tax return?

Not necessarily. A final return is only required if the deceased earned enough income before death to meet federal or state filing thresholds. Even if the amount is small, filing can still be helpful for refund purposes or to close out financial records properly.

Can the surviving spouse file jointly with the deceased?

Yes, if the spouse has not remarried before the end of the year and the executor agrees, a joint return can be filed. This often results in a lower tax rate and higher deduction limits.

What happens to refunds owed to the deceased?

Refunds are issued to the estate or surviving spouse. If someone other than the spouse files the return, Form 1310 (Statement of Person Claiming Refund Due a Deceased Taxpayer) must be submitted to receive the refund.

About the Author
Julie M. Fiedler, an Attorney at Law, has been a resident of San Ramon since 1988. With over 30 years of experience in healthcare and senior services as a Registered Nurse, she is recognized as a Certified Elder Law Attorney (CELA) by the National Elder Law Foundation. Julie is accredited by the Department of Veterans Affairs to assist individuals with VA benefits. Her extensive involvement includes serving on the Board of Directors for the National Academy of Elder Law Attorneys, Inc., and as the past President of the Northern California Chapter of the National Academy of Elder Law Attorneys. She is an active member of California Advocates for Nursing Home Reform and ElderCounsel. Additionally, Julie Fiedler has contributed her leadership skills as President of the Adult Day Services Network of Contra Costa.