How many federal estate tax returns are filed, and what does that number say about the 2026 filing threshold? The short answer is that the latest complete IRS filing-year estimate is for 2023, while the current threshold applies to deaths in 2026. Those are different measures with different time labels.
The evidence at a glance
The IRS estimated **9,024 Form 706 returns filed in calendar year 2023**. Of those, **3,690 were taxable returns** and **5,335 were nontaxable returns**. The same table estimated **$44.413 billion in net estate tax** for all returns, in thousands of dollars in the workbook. These figures are estimates from a sample, and the IRS says the number in the table headings means Forms 706.
| Measure | IRS estimate or rule | What it means |
|---|---|---|
| Returns filed in 2023 | 9,024 | All Form 706 returns in the filing-year study |
| Taxable returns filed in 2023 | 3,690 | Returns classified as taxable in the IRS table |
| Nontaxable returns filed in 2023 | 5,335 | Returns classified as nontaxable in the IRS table |
| Net estate tax on 2023 returns | $44.413 billion | Aggregate net estate tax estimate, not a count of returns |
| Filing threshold for a 2026 death | $15,000,000 | Federal threshold before considering the full filing facts |
The 9,024 figure is not a forecast for 2026. The IRS has not published a 2026 filing-year estate tax table in the source set reviewed for this article.
Why the filing-year label matters
The IRS SOI estate tax filing-year tables count returns filed during a calendar year. The IRS warns that returns filed in one calendar year may relate to decedents who died in several different years. Its 2023 Table 1 notes that most 2023 filings concerned deaths in 2022, for which the threshold was $12.06 million. Extensions and older returns also appear in the 2023 filing-year data.
That is why “returns filed in 2023” should not be rewritten as “estates of people who died in 2023.” The first is a filing cohort. The second is a death-year cohort.
The 2026 federal threshold
The IRS estate tax FAQ lists a **$15 million filing threshold for a decedent who died in 2026**. The filing test starts with the gross estate and adds adjusted taxable gifts and the specific exemption amount described by the IRS. A threshold is not the same thing as taxable estate value or tax due.
The current Instructions for Form 706 explain that the executor uses the form to figure the estate tax on the taxable estate. They also describe a separate portability reason for filing: an executor may file to elect transfer of a deceased spousal unused exclusion amount even when the estate does not exceed the basic threshold. A nonresident who is not a U.S. citizen may have a different filing analysis when U.S.-situated assets are involved.
Four numbers that should stay separate
These terms are related, but they answer different questions:
1. **Filing threshold:** the federal amount used in the filing test for the year of death. For 2026, the IRS lists $15 million. 2. **Gross estate:** the value of property included for estate tax purposes before allowable deductions. It is not the same as a probate inventory or a property's tax-assessed value. 3. **Taxable estate:** the amount left after the deductions and adjustments used on Form 706. The IRS 2023 Table 1 estimated $142.521 billion in taxable estate for all returns, in thousands of dollars. 4. **Tax paid:** the IRS 2023 table estimated $44.413 billion in net estate tax. That amount is not the number of taxable returns and does not tell us what a particular estate owes.
The IRS table also reports **$63.387 billion in total tax before credits** for 2023 returns, compared with net estate tax after credits. Mixing those columns can make the reported tax amount look larger or smaller than the source supports.
What Treasury data can and cannot add
The Treasury Department's tax-expenditure materials provide federal policy estimates about revenue effects of tax provisions. They are not a second count of Form 706 filings, taxable estates, or tax paid by individual estates. For filing volume and estate-level amounts, the IRS SOI workbooks remain the direct source used here.
That distinction is useful when a report combines administrative statistics with budget estimates. A Treasury estimate about a tax provision should not be presented as observed filing activity.
Practical relevance for estate document review
Estate Contract Review work often begins with documents, not an aggregate statistic. When an executor or adviser is assembling a file, record the year of death, the filing year, the Form 706 version, and the source for each property value. Keep the threshold analysis separate from questions about title, ownership, beneficiary designations, trusts, and probate status.
For a property-heavy estate, a document checklist can help connect the tax file to the underlying record: deeds, liens, closing statements, appraisals, trust instruments, and beneficiary records should be traceable to the asset they describe. See our guides to estate contracts for executors and estate contract requirements. For the filing-year caveat behind the 2023 count, see what the IRS 2023 estate tax tables measure.
Method and scope note
Reviewed **August 5, 2026**. This article uses the IRS estate tax FAQ and Form 706 instructions for the 2026 filing rule, the IRS 2023 filing-year Table 1 workbook for return counts and tax amounts, the IRS filing-year table landing page for scope notes, and Treasury's tax-expenditure overview for the limits of budget estimates. Amounts from the IRS workbook are reported in dollars after converting its stated thousands-of-dollars units. The article does not estimate 2026 filing volume, deaths, probate filings, or state estate tax activity.
Frequently asked questions
How many federal estate tax returns were filed in 2023?
The IRS estimated 9,024 Form 706 returns filed in 2023. It is a filing-year estimate based on a sample. It is not a count of deaths in 2023, all estates, or probate cases.
What is the federal estate tax filing threshold for 2026?
The IRS lists $15,000,000 for a decedent who died in 2026. The filing test also considers adjusted taxable gifts and the specific exemption amount. Portability can create a filing reason below the threshold.
Does every 2023 return represent tax paid?
No. The 2023 table includes 5,335 nontaxable returns. It estimated $44.413 billion in net estate tax across the returns, but that total is not a tax bill for every return.
Can the 9,024 returns estimate probate volume?
No. The Form 706 population is narrower than probate and estate administration generally. It also does not measure property-review work.
**Professional disclaimer:** This article is general research, not legal, tax, accounting, fiduciary, or financial advice. Filing requirements and tax results depend on the facts, the year of death, and applicable federal and state rules.