Glossary term

Form 706 - U.S. Estate Tax Return

Form 706 is the federal estate tax return used to report certain estates and calculate estate and generation-skipping transfer tax.

Updated

May 22, 2026

Read time

2 min read

What Is Form 706?

Form 706, United States Estate (and Generation-Skipping Transfer) Tax Return, is the federal return used by an executor to report certain estates after a person's death. It is used to calculate federal estate tax and, in some cases, generation-skipping transfer tax.

Not every estate must file Form 706. Filing depends on the value of the gross estate, adjusted taxable gifts, applicable exclusion amount, portability elections, and other estate-specific facts.

Key Takeaways

  • Form 706 is the federal estate tax return.
  • It reports the decedent's gross estate, deductions, taxable estate, and tax calculations.
  • It may also be used for generation-skipping transfer tax issues.
  • Some estates file to elect portability even when no estate tax is due.
  • Valuation, deadlines, appraisals, and records are central to the process.

How Form 706 Works

The executor gathers information about the decedent's assets, debts, transfers, deductions, beneficiaries, and prior taxable gifts. The return may include schedules for real estate, stocks and bonds, closely held business interests, insurance, joint property, transfers, debts, charitable deductions, marital deductions, and tax computation.

Valuation is often one of the most important parts. Real estate, private business interests, collectibles, farms, and other hard-to-price assets may require appraisals or additional support.

Form 706 can also matter for portability. A surviving spouse may benefit if the estate files a timely return to transfer unused exclusion amount, even when the estate itself does not owe federal estate tax.

Common Form 706 Issues

Issue

What it involves

Why it matters

Gross estate

All includible property interests

Starting point for filing and tax

Valuation

Date-of-death or alternate valuation

Affects estate tax and basis

Deductions

Debts, expenses, marital and charitable deductions

Reduces taxable estate

Portability

Unused exclusion for surviving spouse

Can affect later estate planning

Limits and Misunderstandings

Form 706 is not the same as probate. Probate is a legal administration process under state law; Form 706 is a federal tax return. An estate can avoid probate and still have federal estate tax reporting issues.

It is also not only about cash in the estate. Life insurance, business interests, real estate, retirement assets, joint property, and prior gifts can affect whether the form is required.

This entry is educational, not tax or legal advice. Estate reporting depends on federal law, state law, asset values, ownership, deadlines, elections, and the decedent's facts.

The Bottom Line

Form 706 is the core federal estate tax return. It matters for taxable estates, GST tax issues, and portability planning, and it requires careful valuation, documentation, and deadline management.

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