Death of a Taxpayer / Final Return & Post-Death Planning: The Final Form 1040 Is Only the First Return in the Process

The final Form 1040 is only one part of the tax work after a death. Income ownership changes at the date of death, basis may change, retirement accounts move to beneficiaries, an estate or trust may begin filing, and state administration can create separate obligations.

Separate pre-death and post-death income

Information returns can cover an entire calendar year even though income belongs partly to the decedent and partly to an estate, trust or beneficiary. Apply constructive-receipt/accrual principles and nominee reporting where necessary.

Determine the final-return filing authority and status

A surviving spouse, personal representative or other claimant may have different signing and refund procedures. Form 1310 may apply depending on who claims a refund and the representative status.

Basis depends on ownership and state law

Section 1014 can adjust basis at death, but joint property, community property, trusts, IRD assets and special statutory exceptions require asset-by-asset analysis. Preserve valuation evidence.

Income in respect of a decedent is not stepped up

Items such as certain retirement distributions, accrued compensation or receivables can remain taxable as IRD. The recipient may also have a §691(c) deduction when estate tax was attributable to the IRD item.

Carryovers and elections need triage

Capital losses, passive losses, charitable carryovers, NOLs and other attributes do not all survive death in the same way. Partnership interests may raise §754/§743 issues; portability and estate-tax filings can require timely action even when no estate tax is currently due.