An example of Form 706 in practice is best understood as a guided tour through its schedules: the executor lists every asset the decedent owned on Schedules A through I, subtracts allowable deductions on Schedules J through O, applies the unified credit, and files the return within nine months of the date of death. For a decedent dying in 2026, filing is required when the gross estate plus adjusted taxable gifts exceeds $15 million.1Internal Revenue Service. What’s New – Estate and Gift Tax The tax rate above the exclusion tops out at 40%, which is why every schedule, every valuation, and every deduction matters.
Who Files, When, and Why an Estate Might File Even If It Owes Nothing
The executor, administrator, or whoever is in possession of the decedent’s property files Form 706. The return is due nine months after the date of death.2Internal Revenue Service. Frequently Asked Questions on Estate Taxes Filing Form 4768 buys an automatic six-month extension of time to file, but not to pay.3Internal Revenue Service. About Form 4768, Application for Extension of Time To File a Return and/or Pay US Estate (and Generation-Skipping Transfer) Taxes The estimated tax is still due at the nine-month mark. Underestimate it and interest plus a late-payment penalty start running.
The $15 million threshold was set by the One Big Beautiful Bill Act signed into law on July 4, 2025, and will be adjusted for inflation in future years. It works through the unified credit, which directly offsets the tentative tax so that estates at or below the exclusion owe nothing.
Estates well below the threshold sometimes file anyway. A complete Form 706 is the only way for a surviving spouse to inherit the decedent’s unused exclusion through portability of the deceased spousal unused exclusion (DSUE) amount. For a married couple, portability can shield up to $30 million from estate tax at the second death without trust planning. Skip the return and the unused exclusion is gone permanently.
If the executor of a non-taxable estate missed the original deadline, Revenue Procedure 2022-32 offers a simplified path: file a complete Form 706 within five years of death and write “FILED PURSUANT TO REV. PROC. 2022-32 TO ELECT PORTABILITY UNDER ยง 2010(c)(5)(A)” at the top of page one.4Internal Revenue Service. Revenue Procedure 2022-32 This relief is only available to estates that were not otherwise required to file. If the estate exceeded the filing threshold, portability must be elected on a timely filed return, including extensions.
What to Assemble Before You Start
Form 706 is really a dossier. A death certificate must be attached. If the decedent left a will, a certified copy is required; an uncertified copy with an explanation of why certification could not be obtained is acceptable.5Internal Revenue Service. Instructions for Form 706
The individual schedules generate their own attachments. Appraisal reports back up the values claimed for real estate, closely held businesses, and collectibles. Each life insurance policy needs a Form 712 from the carrier.6Internal Revenue Service. About Form 712, Life Insurance Statement If an attorney or other representative will deal with the IRS, file Form 2848 as well.
Building the Gross Estate on Schedules A Through I
The gross estate is the fair market value of everything the decedent owned or held certain interests in at the moment of death. Fair market value is what a willing buyer and willing seller would agree on, both reasonably informed, neither under pressure. Every item is valued as of the date of death unless the alternate valuation date election is made.
Schedule A: Real Estate
Every parcel of real property goes here: the primary residence, vacation homes, commercial buildings, undeveloped land. Each entry needs a legal description, square footage or acreage, and street address. A qualified appraisal is essential, especially for unique or non-income-producing properties. If a property carries a mortgage, report the full fair market value on Schedule A and deduct the outstanding balance on Schedule K.
Schedule B: Stocks and Bonds
Publicly traded stocks and bonds go on Schedule B, whether held in a brokerage account, as certificates, or inside a trust. List the number of shares, the CUSIP number, and a description.7Internal Revenue Service. Schedule B (Form 706) – Stocks and Bonds Publicly traded securities are valued at the average of the highest and lowest selling prices on the date of death.5Internal Revenue Service. Instructions for Form 706 Dividends declared before death but not yet paid are a separate asset. Treasury bonds redeemable at par to pay estate taxes are reported at par.
Schedule C: Mortgages, Notes, and Cash
Bank accounts, certificates of deposit, and physical cash belong here, each shown with the institution, account number, and exact balance on the date of death. Interest accrued but not credited must be calculated in. Promissory notes held by the decedent go here too, and any note the executor believes uncollectible needs a written explanation with supporting evidence.
Schedule D: Life Insurance
Life insurance proceeds are reported when the estate is the beneficiary, or when the decedent held any incident of ownership over the policy at death. Incidents of ownership include the ability to change the beneficiary, borrow against cash value, or cancel the policy. Even when proceeds go directly to a named individual, they count if the decedent retained any of those rights. Form 712 documents the policy details and proceeds.8Internal Revenue Service. Form 712 – Life Insurance Statement
Schedule E: Jointly Owned Property
Property held as joint tenants with right of survivorship or as tenants by the entirety is reported here, and how much lands in the gross estate depends on the co-owner. For property held jointly with a surviving spouse who is a U.S. citizen, only half the value is included, regardless of who actually paid.9Office of the Law Revision Counsel. 26 US Code 2040 – Joint Interests For property held jointly with anyone else, the full value is included unless the executor can prove the surviving owner contributed their own money. Documentation of who paid what matters here.
Schedule F: Other Miscellaneous Property
Schedule F catches everything that does not fit elsewhere. Tangible personal property such as jewelry, artwork, antiques, and vehicles is reported here. Any art or collectible item worth more than $3,000 needs a professional appraisal attached.10Internal Revenue Service. Schedule F (Form 706) – Other Miscellaneous Property Not Reportable Under Any Other Schedule Business interests also land here: partnerships, sole proprietorships, closely held corporations. Valuation is contentious because there is no public market, so a qualified business valuation report is almost always necessary. Intellectual property rights, royalty streams, and pending legal claims also go here.
Schedule G: Lifetime Transfers Pulled Back In
Some property the decedent gave away during life is pulled back into the gross estate because the decedent kept strings attached. The classic example: a parent transfers a home into a trust but continues living there rent-free. The home’s full date-of-death value comes back into the estate under section 2036.11Office of the Law Revision Counsel. 26 USC 2036 – Transfers With Retained Life Estate Revocable transfers and transfers taking effect at death belong here as well. Each entry lists the transfer date, the recipient, and the current fair market value.
Schedule H: Powers of Appointment
If the decedent held a general power of appointment over someone else’s property, that property is included in the gross estate even if the power was never exercised.12Office of the Law Revision Counsel. 26 US Code 2041 – Powers of Appointment A general power means the decedent could have directed the property to themselves, their estate, their creditors, or their estate’s creditors. Limited powers do not trigger inclusion.
Schedule I: Annuities
Annuity payments that continue after the decedent’s death are reported on Schedule I. The includible portion tracks how much of the annuity’s purchase price the decedent contributed, with employer contributions to retirement plans counted as the decedent’s own.13Office of the Law Revision Counsel. 26 US Code 2039 – Annuities IRAs, 401(k) balances, and defined benefit pensions with survivor benefits are commonly reported here.
Deductions That Get You From Gross Estate to Taxable Estate
After totaling the gross estate, deductions on Schedules J through O reduce it to the taxable estate. Every deduction needs documentation: receipts, invoices, court orders, loan statements.
Schedule J: Funeral and Administration Expenses
Funeral costs are deductible up to what was actually paid, including a burial plot and headstone, and must be reasonable. Administration expenses cover attorney fees, executor commissions, appraisal fees, and probate court costs, and must be allowable under the state law where the estate is administered. Fees not yet paid can be deducted if they are reasonably expected to be paid and are allowable by the local probate court.14Internal Revenue Service. Schedule J (Form 706) – Funeral Expenses and Expenses Incurred in Administering Property Subject to Claims Unfinalized expenses are marked “estimated,” “agreed upon,” or “paid.” If an expense is too uncertain to deduct at filing, Schedule PC preserves a protective refund claim so the deduction can be added later once the amount is known.
Schedule K: Debts, Mortgages, and Liens
The decedent’s personal debts at death, including credit card balances, medical bills, and personal loans, are deductible so long as they represent enforceable claims made in good faith for real value. Family loans where no money actually changed hands face heavy scrutiny. Mortgages and liens on property included in the gross estate are also deducted here, matching up with the full property value reported on Schedule A. Confirm no insurance or other source has already covered the debt.
Schedule M: Marital Deduction
The marital deduction is usually the single largest number on any return involving a surviving spouse. It is unlimited: any amount can pass to a surviving spouse who is a U.S. citizen without estate tax, deferring taxation until the surviving spouse’s own death.15Office of the Law Revision Counsel. 26 US Code 2056 – Bequests, etc., to Surviving Spouse
Not every interest qualifies. A terminable interest, where the spouse’s interest ends on some event or condition, generally does not qualify. The major exception is Qualified Terminable Interest Property (QTIP). Electing QTIP treatment allows property such as a trust paying the surviving spouse income for life to qualify for the marital deduction. The trade-off is that whatever remains in the QTIP trust is included in the surviving spouse’s gross estate later. Schedule M is where the executor identifies all property passing to the spouse and indicates whether QTIP applies.
The QDOT Boundary for Non-Citizen Surviving Spouses
The unlimited marital deduction does not apply when the surviving spouse is not a U.S. citizen. To qualify, the property must pass through a Qualified Domestic Trust (QDOT), which requires at least one trustee who is a U.S. citizen or a domestic corporation with the right to withhold estate tax from any principal distributions.16Office of the Law Revision Counsel. 26 USC 2056A – Qualified Domestic Trust The QDOT election is made on Form 706 and is irrevocable once filed. Missing it means the marital deduction is lost entirely.
Schedule O: Charitable Deduction
Property left to qualifying charities is deductible without a dollar limit.17Office of the Law Revision Counsel. 26 US Code 2055 – Transfers for Public, Charitable, and Religious Uses The deduction equals the value of the interest that actually passes to the charity. If death taxes are payable out of the charitable bequest, the deduction is reduced by those taxes. Split-interest transfers, where a charity and a non-charitable beneficiary share the same property, only qualify when the charitable interest takes a specific legal form such as a charitable remainder trust or charitable lead trust. Informal split arrangements typically fail.
The Alternate Valuation Date Election
The default is date-of-death valuation. When markets drop after death, the executor can elect the alternate valuation date (AVD), valuing the estate six months after death.18Office of the Law Revision Counsel. 26 US Code 2032 – Alternate Valuation Two conditions must be met: the election must reduce both the total gross estate and the total estate tax liability. If the estate owes no tax anyway, the election is unavailable. Any asset sold or distributed during the six-month window is locked in at its value on the date it left the estate.
AVD is all-or-nothing. The executor cannot pick AVD for depreciated assets and date-of-death for appreciated ones. The election is made on Form 706 and becomes irrevocable when the return is filed. It is a real planning tool for a stock-heavy estate that lost value after death, but the tax savings need to be weighed against the lower stepped-up basis beneficiaries will inherit.
Bringing It Together: The Tax Computation
Page one of Form 706 ties the schedules together. Start with the gross estate (Schedules A through I), subtract total deductions (Schedules J through O), and arrive at the taxable estate.
The taxable estate is then combined with adjusted taxable gifts, which are lifetime gifts made after 1976 that exceeded the annual gift tax exclusion.5Internal Revenue Service. Instructions for Form 706 Adding those gifts back produces the tentative tax base: the total wealth transferred during life and at death. The unified rate schedule is applied to this figure.
The rate schedule is graduated, starting at 18% on the first $10,000 and climbing through a dozen brackets. The top rate is 40% on amounts above $1 million in the tentative tax base. For any estate large enough to actually owe tax after the unified credit, virtually all of the taxable portion falls in that top bracket.
The unified credit is then subtracted from the tentative tax. For 2026, the credit offsets the tax on the first $15 million of the tentative tax base, zeroing out the tax for estates at or below the exclusion.1Internal Revenue Service. What’s New – Estate and Gift Tax Any gift tax actually paid on lifetime gifts is subtracted to prevent double-counting. Additional credits may apply for foreign death taxes and for tax already paid on property inherited from someone who died within the prior ten years.
Generation-Skipping Transfers on Schedule R
The GST tax is calculated separately on Schedule R. It applies when property passes to someone two or more generations below the decedent, such as a grandchild, whether outright or through a trust. The GST exemption for 2026 is $15 million, and the executor allocates it to specific transfers to reduce or eliminate GST tax. Property fully covered has an inclusion ratio of zero and escapes the tax; anything not covered is taxed at a flat 40%.
Section 6166 Installments for Business-Heavy Estates
An estate holding a valuable closely held business can be cash-poor at exactly the moment the tax is due. Section 6166 lets the executor pay the portion of estate tax attributable to the business interest in installments over up to 14 years.19Office of the Law Revision Counsel. 26 USC 6166 – Extension of Time for Payment of Estate Tax Where Estate Consists Largely of Interest in Closely Held Business
To qualify, the closely held business interest must exceed 35% of the adjusted gross estate. If it does, the executor can defer the first installment for up to five years after the normal payment deadline, paying only interest during that period, then pay the tax in up to ten annual installments. A portion of the deferred tax qualifies for a favorable 2% interest rate; for deaths in 2026, that reduced rate applies to the tax attributable to approximately the first $1,940,000 of taxable business value above the exclusion. Interest paid under a Section 6166 election is not deductible for either income or estate tax purposes, but the extended schedule can be the difference between keeping the family business and selling it.
Penalties, Mailing, and What Falls Outside Form 706
The IRS imposes separate penalties for filing late and paying late, and they can run at the same time.
- Late filing runs at 5% of unpaid tax per month or partial month, capped at 25%. Returns more than 60 days late face a minimum penalty of the lesser of $525 or 100% of the tax owed.20Internal Revenue Service. Topic No. 653, IRS Notices and Bills, Penalties and Interest Charges
- Late payment runs at 0.5% of unpaid tax per month, capped at 25%. After a notice of intent to levy, if the tax is not paid within 10 days, the rate rises to 1% per month.
- Interest accrues on top of both from the original due date.
The executor can avoid the late-payment penalty by paying the full estimated tax by the nine-month deadline, even when filing on extension. Overpaying with the extension request and claiming a refund later costs nothing compared to compounding penalties.
Original returns go to the Department of the Treasury, Internal Revenue Service, Kansas City, MO 64999.21Internal Revenue Service. Where to File – Forms Beginning With the Number 7 Any tax payment is due with the return by the original nine-month deadline, regardless of any filing extension.
One boundary worth keeping in view: Form 706 covers only the federal estate tax. A handful of states impose their own estate taxes with filing thresholds well below the $15 million federal exclusion, and several states levy inheritance taxes on the recipients rather than on the estate. An estate that owes nothing federally can still face a six- or seven-figure state bill. Check the decedent’s state of domicile and any state where the decedent owned real property for separate filing requirements, since state returns have their own deadlines and rules that run independently of Form 706.