Estate Administration Expenses Deductible on Form 1041 vs 706

Estate administration expenses can be deducted on Form 1041 or Form 706, but never on both for the same dollar. For deaths in 2026, the federal estate tax exemption is $15,000,000, so most estates owe no estate tax and get nothing from a Form 706 deduction. Form 1041, the fiduciary income tax return, is usually where the deduction produces real savings, because estates hit the top 37% income tax rate at just $16,000 of taxable income. To claim the expenses on Form 1041, the executor has to file a written waiver under Section 642(g) giving up the right to claim them on the estate tax return.

Which Return Actually Saves Tax

The choice comes down to arithmetic. If the estate is below the $15,000,000 exclusion enacted by the One, Big, Beautiful Bill Act signed on July 4, 2025, there is no federal estate tax liability for a Form 706 deduction to offset.¹ Every dollar of deduction claimed there saves zero.

Form 1041 is a different story. The 2026 rate schedule for estates and trusts is heavily compressed:

10% on taxable income up to $3,300
24% from $3,300 to $11,700
35% from $11,700 to $16,000
37% over $16,000

An estate earning $50,000 of investment income during administration is already deep into the 37% bracket. Deducting attorney fees, executor commissions, and appraisal costs against that income produces immediate cash savings.

For estates above the $15,000,000 threshold, the analysis flips. The estate tax rate is a flat 40%, so a dollar deducted on Form 706 is worth more than a dollar deducted on Form 1041. Executors of taxable estates should compare the marginal estate tax rate against the fiduciary income tax rate for each category of expense before allocating anything.

What Counts as an Administration Expense

Deductible administration expenses are costs actually and necessarily incurred to collect assets, pay debts, and distribute property to those entitled to it. The Treasury regulations recognize three main categories: executor commissions, attorney fees, and miscellaneous expenses such as court costs, appraisals, and accountant charges.² Section 2053 of the Internal Revenue Code authorizes the deduction as long as the amounts are allowable under the law of the jurisdiction where the estate is being administered.³

Executor commissions have to align with the standards for estates of similar size in the relevant jurisdiction. A bequest left to an executor in lieu of commissions is not deductible. Attorney fees are measured against a reasonableness standard tied to the size and character of the estate. Expenses incurred for the personal benefit of heirs rather than for settling the estate are not deductible on either return.

The Section 642(g) Waiver

Section 642(g) is the gatekeeper. To deduct any administration expense on Form 1041, the executor has to file a written statement declaring that the amounts have not been allowed as deductions on the estate tax return and waiving the right to claim them there in the future.⁴

The statement is attached to the Form 1041 for the year in which the expenses are claimed. It must be filed before the statute of limitations expires on that income tax year, generally three years from the filing date.⁵ Claiming an expense on the estate tax return does not block a later switch to the income tax return, provided the estate tax deduction has not been “finally allowed” and the waiver statement is filed in time. Once the waiver is filed, the decision is permanent. The expense can never go back onto Form 706.

The statement should identify each expense and its dollar amount, declare that the items have not been allowed as deductions on the estate tax return, and waive all rights to claim them there. Include the estate’s Employer Identification Number and the fiduciary’s signature. Keep copies along with invoices, bank statements, and receipts.

Splitting Expenses Between the Two Returns

This is not an all-or-nothing choice. The regulations allow splitting: one expense or a portion of an expense can go on Form 1041 while another expense or portion goes on Form 706.⁶ An executor could put $30,000 of attorney fees on the estate tax return and $15,000 of executor commissions on the income tax return. The prohibition only bars the same dollar from appearing on both.

For an estate that owes both estate tax and fiduciary income tax, the executor can allocate enough expenses to Form 706 to eliminate the estate tax, then shift the rest to Form 1041 to reduce income tax. Getting the split right usually means modeling both returns side by side before filing either one.

Where the Deductions Go on Form 1041

Administration expenses appear on the first page of Form 1041, not on Schedule G. Two lines do most of the work:

Line 12 is for fiduciary fees, including probate court fees, fiduciary bond premiums, legal publication costs for notices to creditors or heirs, certified copies of the death certificate, and costs of maintaining fiduciary accounts.
Line 14 is for attorney, accountant, and return preparer fees, including costs to prepare the fiduciary income tax return, the decedent’s final individual return, and the estate and generation-skipping transfer tax returns. Preparation fees for gift tax returns are not deductible on this line.

Attach the Section 642(g) waiver statement when the return is filed.⁵

Selling Expenses

Costs to sell estate property follow the same 706-or-1041 framework with a twist. Selling expenses are deductible on Form 706 only if the sale is necessary to pay debts, cover administration costs, pay taxes, preserve the estate, or carry out distributions. Brokerage commissions, auctioneer fees, and similar costs qualify under that standard.⁷

On the income tax side, Section 642(g) treats selling expenses as an offset against the sales price when calculating gain or loss, rather than as a separate line-item deduction.⁴ The waiver requirement still applies. When property has appreciated since the date of death, using selling expenses to reduce the taxable capital gain can be worth more than a straight deduction, depending on the estate’s income mix.

Deductions in Respect of a Decedent

One category escapes the double-deduction rule entirely. Under Section 691(b), financial obligations the decedent owed at death but had not yet deducted, such as business expenses, accrued interest, or unpaid taxes, can be claimed on both returns.⁸ Section 642(g) carves out this exception on its face.⁴

A typical example: a cash-basis decedent owned real property with accrued but unpaid property taxes. The debt reduces the gross estate on Form 706 under Section 2053. When the estate or heir pays those taxes, they also take an income tax deduction under Section 164, just as the decedent would have.⁹ No waiver statement is needed. These are pre-death obligations, not costs generated by administration.

Excess Deductions in the Final Year

In the estate’s final tax year, administration expenses that exceed gross income don’t disappear. They pass through to the beneficiaries on Schedule K-1, and the beneficiaries can use them to reduce their own taxable income.¹⁰ The deductions retain their character as above-the-line, non-miscellaneous itemized, or miscellaneous itemized on the beneficiary’s individual return.

This is worth planning around. If the estate is winding down and doesn’t have enough income to absorb its remaining expenses, claiming them on Form 1041 rather than Form 706 effectively shifts the tax benefit to the heirs. For a beneficiary in a high individual bracket, that transferred deduction can be worth more than it would have been to the estate.

A Note on Portability Filings

An estate below the $15,000,000 threshold may still file Form 706 to elect portability of the deceased spouse’s unused exclusion.¹¹ That filing does not change the expense analysis. The executor can file Form 706 solely to elect portability and still claim all administration expenses on Form 1041. The two decisions are independent.

The Penalty for Double-Dipping

Claiming the same expense on both returns without filing the waiver is a prohibited double deduction. If the IRS catches it, the income tax deduction is disallowed and the underpayment triggers an accuracy-related penalty of 20% on top of the additional tax owed.¹² Interest accrues on both from the original due date.

The risk isn’t limited to deliberate double-dipping. When an estate has both a Form 706 and a Form 1041 in play, separate preparers can each claim the same attorney fees without checking with the other. A single ledger that tracks every expense and shows which return it has been allocated to is the simplest defense.

1
Internal Revenue Service. What’s New – Estate and Gift Tax
2
eCFR. 26 CFR 20.2053-3 – Deduction for Expenses of Administering Estate
3
Office of the Law Revision Counsel. 26 USC 2053 – Expenses, Indebtedness, and Taxes
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Office of the Law Revision Counsel. 26 USC 642 – Special Rules for Credits and Deductions
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eCFR. 26 CFR 1.642(g)-1 – Disallowance of Double Deductions; In General
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eCFR. 26 CFR 1.642(g)-2 – Deductions Included
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eCFR. 26 CFR 20.2053-3 – Deduction for Expenses of Administering Estate
8
Office of the Law Revision Counsel. 26 USC 691 – Recipients of Income in Respect of Decedents
9
GovInfo. 26 CFR 1.691(b)-1 – Allowance of Deductions and Credit in Respect of Decedents
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Internal Revenue Service. 2025 Instructions for Form 1041
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Internal Revenue Service. Frequently Asked Questions on Estate Taxes
12
Internal Revenue Service. Accuracy-Related Penalty