The estate tax on property held in a Qualified Terminable Interest Property trust is paid by the executor of the surviving spouse’s estate, not by the trust itself and not by the estate of the first spouse to die. When the surviving spouse dies, the full value of the QTIP trust is pulled back into their taxable estate, the executor calculates one combined estate tax on everything, and the tax is paid out of the estate’s assets. Federal law then gives that executor a right to recover the QTIP share of the tax from the people who actually inherit the trust property.
Why the Tax Falls on the Second Estate
The reason the surviving spouse’s estate pays comes down to how the QTIP structure works with the marital deduction. When the first spouse died, their executor elected QTIP treatment on Form 706, which qualified the trust for the unlimited marital deduction and let the assets pass without estate tax at that time.1Internal Revenue Service. Instructions for Form 706 (Rev. September 2025) That deduction was a deferral, not forgiveness.
IRC Section 2044 collects on the deferral. It requires the full fair market value of any property for which a QTIP marital deduction was previously allowed to be included in the surviving spouse’s gross estate at death.2Office of the Law Revision Counsel. 26 USC 2044 – Certain Property for Which Marital Deduction Was Previously Allowed That inclusion happens even though the surviving spouse never owned the principal, never had the power to give it away, and often never touched it beyond receiving the required income. From the IRS’s standpoint, the surviving spouse is treated as the transferor of that property at death.
Valuation follows the same rules as any other estate asset. The QTIP property is included at its fair market value on the date of death, or on the alternate valuation date six months later if the executor makes that election. If the trust holds appreciated assets, the taxable amount at the second death can substantially exceed what would have been taxed at the first death.
How the Executor Calculates and Pays
Federal law is direct on who writes the check. Under IRC Section 2002, the estate tax is paid by the executor.3Office of the Law Revision Counsel. 26 USC 2002 – Liability for Payment For a QTIP situation, that means the executor of the surviving spouse’s estate.
The mechanics are unremarkable. The executor files Form 706 for the surviving spouse, reporting the surviving spouse’s own assets plus the full QTIP trust value as one combined gross estate. The tax is calculated on that total. For 2026, the federal estate tax exemption is $15 million per person, and the top rate on amounts above the exemption is 40%. Whatever tax comes out of that calculation is paid from the estate’s available assets before distributions to beneficiaries.
This is where families are often caught off guard. The QTIP assets and the surviving spouse’s own assets are treated as a single pool for computing the tax, but the tax initially comes out of the surviving spouse’s own assets. If the surviving spouse left $5 million to their own children and a QTIP trust holds $8 million earmarked for the first spouse’s children from an earlier marriage, the tax on the combined $13 million is paid from the surviving spouse’s estate first. The surviving spouse’s beneficiaries watch their inheritance shrink to cover tax on property going to someone else.
Recovering the Tax From QTIP Beneficiaries
Congress built in a correction. IRC Section 2207A gives the surviving spouse’s executor a statutory right to recover the portion of estate tax attributable to the QTIP property from the people who receive that property.4Office of the Law Revision Counsel. 26 USC 2207A – Right of Recovery in the Case of Certain Marital Deduction Property The recoverable amount is the difference between the total estate tax actually paid and the tax that would have been owed if the QTIP property had never been included in the gross estate. In practical terms, the remainder beneficiaries reimburse the surviving spouse’s estate for the extra tax their inheritance generated.
So while the executor is the party who legally pays the tax, the ultimate economic burden lands on the QTIP beneficiaries — unless the surviving spouse waived the right of recovery. The statute permits that waiver, but only if the surviving spouse’s will or revocable trust contains specific language showing an intent to give up Section 2207A recovery rights. A generic residuary clause or standard tax-apportionment boilerplate does not qualify.4Office of the Law Revision Counsel. 26 USC 2207A – Right of Recovery in the Case of Certain Marital Deduction Property
Whether to waive matters most when the two sets of beneficiaries differ. If the QTIP remainder beneficiaries are the first spouse’s children and the surviving spouse’s own beneficiaries are different people, waiving recovery shifts a real dollar amount from one group to the other, and at a 40% top rate the transfer can be large. Where the same people inherit under both sides, a waiver can simplify administration by avoiding a recovery that would just move money among the same beneficiaries.
Executors also need to actually exercise the recovery right when it applies. If the right lapses through inaction, the IRS may treat the missed recovery as a taxable gift from the surviving spouse’s estate to the QTIP beneficiaries, layering on additional tax.
Who Bears the Burden in a Blended Family
Because the QTIP structure is so common in blended-family planning, this allocation question comes up often. The first spouse typically sets up the trust to protect children from a prior marriage while providing lifetime income to a second husband or wife. The surviving spouse gets all trust income, distributed at least annually, and the trustee may distribute principal within the health, education, maintenance, and support standard, but the surviving spouse cannot redirect the assets. When they die, the remainder goes to the first spouse’s chosen beneficiaries.
Understanding who ultimately pays the tax matters to both branches of that family:
- The surviving spouse’s executor is legally responsible for paying the full estate tax, including the portion generated by the QTIP inclusion.
- The surviving spouse’s own beneficiaries feel the payment first, because the tax comes out of estate assets before distributions.
- The QTIP remainder beneficiaries reimburse the estate for their share of the tax, unless the surviving spouse’s documents expressly waive that recovery.
- Anyone drafting or reviewing a will or revocable trust for a QTIP-affected client should look at Section 2207A language specifically. Default language does not carry the effect of a waiver.
The Offsetting Benefit: A Second Basis Step-Up
The same Section 2044 inclusion that produces the estate tax also produces an income tax benefit for the beneficiaries. Because QTIP property is treated as part of the surviving spouse’s estate, it qualifies for a stepped-up basis under IRC Section 1014.5Office of the Law Revision Counsel. 26 USC 1014 – Basis of Property Acquired From a Decedent The remainder beneficiaries receive the trust assets with a basis equal to fair market value on the surviving spouse’s date of death, erasing capital gains built up during both spouses’ lifetimes.
This does not change who pays the estate tax, but it affects how painful that payment is in real terms. For a trust holding appreciated real estate or a concentrated stock position, the capital gains savings from the second step-up can partially or fully offset the estate tax cost that comes with inclusion.
State Estate Tax Is a Separate Question
The rules described above are federal. Roughly a dozen states and the District of Columbia impose their own estate taxes, often at exemption thresholds well below the federal $15 million. An estate that owes no federal tax can still owe substantial state tax, and the Section 2207A right of recovery does not reach state estate tax. State tax apportionment is governed by state law and by the terms of the will or trust; some states have their own recovery statutes, and others leave the question entirely to the drafting documents. A plan that handles federal recovery cleanly can still produce lopsided results at the state level if the documents are silent on state taxes.
Some states also allow or require a separate state-level QTIP election, which can create situations where the trust is treated as QTIP for one jurisdiction but not another. That mismatch does not change the answer to who pays the federal tax, but it can produce a second, parallel tax calculation with its own apportionment questions.
The Short Version
The executor of the surviving spouse’s estate pays the federal estate tax on QTIP trust property as part of one combined estate tax bill, drawing on the estate’s assets to do so. Section 2207A then lets that executor recover the QTIP share of the tax from the trust beneficiaries, so unless the surviving spouse waived recovery in specific language, the trust beneficiaries end up bearing the economic cost. Anyone in a blended-family QTIP situation should read the surviving spouse’s will and trust carefully for that waiver language, because whether it exists determines which side of the family actually pays.