After someone dies, tax mail can continue arriving while the family is still sorting out much more immediate concerns. A final income tax return may be required, and an earlier year’s return may remain unfinished. The task becomes more manageable when you separate the person’s own income from income received later by an estate or beneficiary.
Begin with a timeline and the prior return. Record the date of death, identify the person responsible for the financial affairs, and collect the income documents as they arrive. Avoid assuming that every form bearing the deceased person’s name belongs on the same return.
Confirm Who Is Responsible for Filing
The personal representative generally handles the deceased person’s required returns. That may be an executor or administrator, and a surviving spouse may have responsibilities in certain situations. The right person to sign depends on whether a representative has been appointed and whether a joint return is being filed.
Gather any court appointment documents, the death certificate, and the prior tax return before requesting records or authorizing preparation. A will naming an executor is not necessarily the same as a court certificate establishing an appointment for IRS refund procedures. Your preparer needs to understand your actual role.
Form 56 notifies the IRS of a fiduciary relationship when required. It is different from simply hiring a tax preparer or naming someone to discuss a return. A preexisting authorization should not be assumed to remain sufficient after death; review the documentation needed for access to federal and California tax information.
Identify the Correct Return and Tax Year
The final individual federal return generally uses Form 1040 or Form 1040-SR for the year of death. Whether filing is required depends on the applicable income, age, filing status, and other rules. A return may also be useful to claim a refund even when income is below the usual filing threshold.
If the person died before filing the preceding year’s return, that earlier return is still a separate filing. For example, a death in early 2026 could leave a 2025 return to complete as well as a final 2026 return. Calling the earlier filing “final” does not eliminate the need to review income received during 2026.
The final return generally is due when it would have been due had the person lived, usually April 15 of the following year for a calendar-year taxpayer, with the usual weekend, holiday, and applicable relief rules. A filing extension may be available, but an extension to file generally does not extend the time to pay.
Separate Income Before and After the Death
For a person using the cash method, the final return generally reports income actually or constructively received through the date of death. Wages, retirement payments, interest, dividends, and business activity should be reviewed using the applicable rules. A payment received afterward may belong to the estate or another recipient instead.
Income the person earned or became entitled to before death but had not received can be income in respect of a decedent. That category can be taxable to the estate or beneficiary who later receives it. It does not automatically become tax-free merely because it arrived as part of settling the person’s affairs.
Compare bank and brokerage statements around the death date with the year-end tax forms. A Form 1099 may cover a full year even though the income needs allocation. Ask the payer about necessary corrections and give your preparer enough records to avoid reporting the same income twice or leaving it off every return.
Handle Signatures, Refunds, and California Documents
The return must identify the taxpayer as deceased and provide the date of death in the manner required by the form or filing software. An appointed personal representative signs the federal return; a surviving spouse also signs a joint return. Different signature instructions apply when no representative has been appointed.
A surviving spouse may qualify to file jointly for the year of death, but remarriage and the representative’s role can affect the result. Do not automatically copy the filing status from the prior year. California registered domestic partner rules can also differ from federal marital-status rules.
Federal Form 1310 is used for certain refund claims. Exceptions include a surviving spouse filing an original or amended joint return and a qualifying court-appointed representative filing an original individual return with the required court certificate. California has separate refund documentation instructions, including death-certificate and Form 1310 requirements in applicable cases. Check each agency’s rules rather than mailing identical attachments automatically.
Check for Estate Returns and Keep a Complete File
The final personal return does not replace an estate income tax return. Income received by the estate after death may require federal Form 1041 and California Form 541 when their filing conditions are met. These income tax returns are also different from a federal estate tax return, which concerns transfers at death and has separate rules.
Keep the personal and estate records organized separately, including tax payments, income allocations, expenses, and beneficiary distributions. Review outstanding prior-year returns and notices as part of the process. Before distributing all estate funds, the representative should coordinate unresolved tax obligations with the professionals handling the estate.
LocalTax provides tax preparation services in Bellflower. Contact LocalTax to discuss the individual-return records and confirm what additional estate assistance may be needed. Bringing the timeline, appointment documents, prior returns, and current income forms helps establish a clear filing plan during a difficult time.