Does the AMT Apply to Trusts and Estates? (w/Examples) + FAQs

This article reflects federal rules and state rules as of June 2026 and covers tax year 2025 (returns filed in the 2026 season). Tax law changes often — confirm current figures on IRS.gov before you file.

Quick Answer

Yes. For tax year 2025, the alternative minimum tax (AMT) applies to estates and nongrantor trusts. A fiduciary figures it on Schedule I (Form 1041). The 2025 AMT exemption for an estate or trust is only $30,700, far below the amounts individuals get.

The catch is the tiny exemption. An estate or trust reaches AMT at income levels where a single person would owe nothing extra, because the 2025 individual exemption is $88,100 while the estate-or-trust exemption is just $30,700. That gap traps small estates that hold private activity bonds, claim accelerated depreciation, or deduct large state taxes.

Roughly 3.1 million Form 1041 fiduciary returns are filed each year, and the AMT rules govern every one of them once income climbs past that low threshold. Miss it, and the IRS can bill the trust for the shortfall plus interest.

Here is what you will learn:

🧮 How the $30,700 exemption and 26%/28% rates actually work for a trust
📄 A line-by-line walk through Schedule I (Form 1041), the form that figures the AMT
💸 Three fully worked dollar examples you can copy for your own return
⚖️ How AMT splits between the trust and its beneficiaries through Schedule K-1
🗺️ Whether your state piles on a separate fiduciary AMT (most do not)

What the AMT Is and Why Trusts Get Hit Harder

The alternative minimum tax is a parallel tax system. You figure your tax the normal way, then figure it again under AMT rules, and you pay whichever is higher. Congress built it so high-income filers who stack deductions and tax-favored income still pay a floor of tax.

The AMT runs on a separate income figure called alternative minimum taxable income (AMTI). You start with regular taxable income and add back items the AMT does not allow, such as certain state taxes, accelerated depreciation, and tax-exempt interest from specified private activity bonds. The result is a wider income base than the regular tax uses.

For estates and nongrantor trusts, the same machinery applies, but with one brutal difference: the exemption is tiny. For tax year 2025, an estate or trust gets only a $30,700 AMT exemption, and that exemption starts to phase out once AMTI passes $102,500 and vanishes completely at $225,300, per the 2025 Schedule I instructions. A single individual, by contrast, gets an $88,100 exemption for 2025.

The consequence is real money. A trust with $120,000 of AMTI is already losing part of its exemption, while a single person at the same income is nowhere near AMT. The next step for any fiduciary is simple: if the trust’s AMTI tops $30,700, you must run Schedule I, even if you think the regular tax already covers it.

A common misconception is that “only the rich pay AMT,” so a modest family trust is safe. That is false for trusts. Because the exemption is so low and trust tax brackets compress fast, a middle-sized trust holding the wrong assets can owe AMT on income that would never trigger it for a person.

Which Trusts and Estates Does the AMT Touch?

The answer depends on the type of entity, because the AMT does not treat them all the same. Match your situation to the right row below before you read further.

Decedent’s estates — Yes. An estate that files Form 1041 figures AMT on Schedule I exactly like a trust. The $30,700 exemption applies.
Simple and complex nongrantor trusts — Yes. These are the core targets. They report AMT on Schedule I and may push part of it to beneficiaries.
Grantor trusts — Usually no, at the trust level. The grantor reports all income on their own Form 1040, so any AMT shows up on the grantor’s individual Form 6251, not on Form 1041.
Electing Small Business Trusts (ESBTs) — Yes, with a twist. An ESBT figures AMT on two separate Schedules I — one for the S corporation portion and one for the rest, per the Schedule I instructions.
Charitable remainder trusts (CRTs) — Generally exempt from income tax themselves, so the trust does not pay AMT; tax character flows to the beneficiaries under the CRT tier rules.

The “why” matters. A grantor trust is ignored for income tax, so it cannot owe AMT on its own — the income belongs to the grantor. The consequence of getting this wrong is double work or a wrong bill: you might compute AMT for an entity that should not file it at all.

What to do next here: confirm the trust’s type from the trust document and the way it has filed before. If you are unsure whether the trust is grantor or nongrantor, that single question changes the entire return, and it is worth a call to the drafting attorney or a CPA.

Schedule I (Form 1041): The Form That Figures Trust AMT

Schedule I (Form 1041) is the engine. It does three jobs: it figures the estate’s or trust’s AMTI, it figures the income distribution deduction on a minimum tax basis, and it figures the AMT itself. You attach it to Form 1041, which is due the 15th day of the 4th month after the tax year ends (April 15 for a calendar-year trust).

You must complete Schedule I if the trust’s share of AMTI on Part I, line 27 tops $30,700, or if it claims certain general business credits. The consequence of skipping it when required is an understated tax, and the IRS can assess the difference plus interest from the original due date.

Part I — Building Alternative Minimum Taxable Income

Part I starts on line 1 with adjusted total income or loss from Form 1041, line 17. From there you add back the AMT adjustments and preference items across lines 2 through 21.

The heavy hitters for trusts are line 3 (state, local, and foreign income and property taxes added back), line 7 (interest from specified private activity bonds that is tax-free for regular tax but taxable for AMT), and line 12 (the depreciation adjustment for assets placed in service after 1986 using accelerated methods). Each addback widens the trust’s AMT income.

The consequence of each line is a higher AMTI, which eats into the $30,700 exemption. A trust that deducted $40,000 of state income tax for the regular tax must add all of it back here, which alone can blow past the exemption.

Part II — Splitting AMT Between Trust and Beneficiaries

Part II figures the income distribution deduction on a minimum tax basis. In plain terms, when a trust distributes income to beneficiaries, the AMT items follow the money. The trust deducts the AMT income it passes out, and beneficiaries pick up their share.

This is where the distributable net alternative minimum taxable income (DNAMTI) comes in. The trust reports each beneficiary’s slice of AMT adjustments and preferences in box 12 of Schedule K-1 (Form 1041). The beneficiary then carries that to their own Form 6251.

The consequence is that a trust which distributes most of its income may owe little or no AMT itself, because the AMT shifts to the beneficiaries. A trust that accumulates income keeps the AMT — and the harsh $30,700 exemption — on its own return.

Part III — Computing the AMT

Part III subtracts the $30,700 exemption (reduced by the phaseout if AMTI tops $102,500), then applies the AMT rates. For 2025, the rate is 26% on the first chunk of AMT base and 28% on amounts over $239,100. The trust pays the AMT only to the extent it exceeds the regular tax.

Capital gains and qualified dividends keep their lower rates inside the AMT, so the 0%, 15%, and 20% breakpoints still apply. For a 2025 estate or trust, the 20% rate kicks in above $15,900. The consequence of ignoring this is overpaying — you do not lose the favorable capital gains rate just because AMT applies.

Worked Example 1: A Trust With Private Activity Bond Interest

Meet the Harlan Family Trust, a complex trust that accumulates its income. In 2025 it has $90,000 of regular taxable income and earns $50,000 of tax-exempt interest from specified private activity bonds issued in 2015.

Step 1: Start with adjusted total income of $90,000. Step 2: On Schedule I line 7, add back the $50,000 of private activity bond interest, which is tax-free for regular tax but a preference item for AMT. AMTI is now $140,000.

Step 3: Because AMTI of $140,000 tops the $102,500 phaseout start, the exemption shrinks. The phaseout removes 25 cents per dollar above $102,500: $140,000 − $102,500 = $37,500 × 25% = $9,375 lost. The exemption falls from $30,700 to $21,325.

Step 4: AMT base = $140,000 − $21,325 = $118,675. At the 26% rate, tentative minimum tax is about $30,856. If the trust’s regular tax on $90,000 is roughly $26,000, the trust owes the $4,856 difference as AMT. The lesson: tax-free bonds are not always tax-free for a trust.

Worked Example 2: An Estate With a Big State Tax Deduction

The Estate of Maria Delgado files Form 1041 for 2025. It has $115,000 of income and deducted $45,000 of state income taxes tied to a business the estate is winding down.

Step 1: Adjusted total income is $115,000. Step 2: On Schedule I line 3, add back the full $45,000 of state income taxes, which the AMT does not allow. AMTI climbs to $160,000.

Step 3: The exemption phases out: $160,000 − $102,500 = $57,500 × 25% = $14,375 lost. The $30,700 exemption drops to $16,325. AMT base = $160,000 − $16,325 = $143,675.

Step 4: At 26%, tentative minimum tax is about $37,356. If the estate’s regular tax is near $34,000, the estate owes roughly $3,356 of AMT. The next step for the executor: weigh whether to distribute income to beneficiaries before year-end so the AMT preference follows the money out.

Worked Example 3: AMT Flowing to a Beneficiary

The Okafor Testamentary Trust earns $80,000 in 2025, including $30,000 of private activity bond interest, and distributes all of its income to its sole beneficiary, Daniel.

Because the trust distributes everything, Part II of Schedule I pushes the AMT preference out to Daniel. The trust reports Daniel’s $30,000 of bond interest preference in box 12 of his Schedule K-1.

The trust itself ends with little or no AMTI to tax, so it likely owes no AMT. Daniel, however, must add the $30,000 preference on his own Form 6251. Whether he owes AMT depends on his personal income — and his individual 2025 exemption is a far roomier $88,100.

The takeaway: distributing income does not erase the AMT; it relocates it. The consequence of forgetting to report box 12 on the K-1 is that the beneficiary understates AMT, and the IRS can later assess them.

Which Situation Applies to You?

You are settling an estate that holds rental property or a business — Focus on the depreciation addback (line 12) and the state tax addback (line 3). These are the usual AMT triggers for estates.
You manage a trust that buys municipal bonds — Check whether any are specified private activity bonds. The 1099-INT box 9 figure is your line 7 addback.
You run a trust that distributes most income each year — Your AMT likely lands on beneficiaries through Schedule K-1 box 12, not on the trust.
You hold an accumulating (complex) trust — The trust eats the AMT with the tiny $30,700 exemption. Plan distributions carefully.
You administer an ESBT — You must run two Schedules I, one for the S portion and one for the rest.

Federal vs. State: Does Your State Add Its Own Trust AMT?

Start with the federal rule, then ask the separate question: does my state pile on? The federal AMT on Schedule I is mandatory nationwide. State treatment is a different matter, and most states do not impose a separate fiduciary AMT at all.

A handful do. California has its own AMT that applies to estates and trusts, figured on Schedule P (541) and filed with Form 541, the California fiduciary return. Connecticut historically applied a state AMT for trusts and estates on Form CT-1041 Schedule I. The consequence of ignoring a state AMT is a second, separate underpayment at the state level.

States with no income tax at all — such as Florida, Texas, Nevada, Wyoming, South Dakota, Washington, and Alaska — impose no fiduciary AMT, because they do not tax trust income in the first place. If the trust files only in a no-income-tax state, the federal Schedule I is your only AMT worry. Never assume your state follows the federal rule; check your state’s department of revenue page for the fiduciary return.

The OBBBA Effect: What Changed for 2026 and Beyond

The One Big Beautiful Bill Act (OBBBA), signed July 4, 2025, made the higher AMT exemptions permanent rather than letting them expire after 2025. This is good news that removes the old sunset cliff.

But OBBBA also tightened two things starting in 2026. First, it reset the exemption phaseout thresholds to 2018 levels for individuals. Second, and important for everyone, it doubled the phaseout rate from 25% to 50% once AMTI tops the threshold, meaning the exemption disappears twice as fast.

For trusts and estates, the structure is the same low exemption, but the faster 50% phaseout in 2026 means a trust loses its exemption more quickly as income rises. The consequence: a trust just over the phaseout line in 2026 will see a sharper exemption haircut than the same trust faced in 2025. Confirm the 2026 estate-and-trust exemption and phaseout figures with the IRS once the 2026 Schedule I is released, because the inflation-adjusted numbers update each year.

2025 vs. 2026 AMT Phaseout	What It Means for a Trust
2025 phaseout rate: 25 cents per dollar over the threshold	Exemption fades gradually as AMTI rises
2026 phaseout rate: 50 cents per dollar over the threshold (per OBBBA)	Exemption disappears twice as fast, so AMT bites sooner

Comparing the Regular Tax and the AMT for a Trust

Feature of the Two Systems	How the Trust Is Affected
Regular tax uses normal deductions and brackets	State taxes, accelerated depreciation, and PAB interest all reduce or escape tax
AMT adds those items back (Schedule I)	The same items become income, widening the AMT base
Trust exemption is $30,700 for 2025	Far below the $88,100 individual figure, so trusts hit AMT at lower income
Pay the higher of the two	The trust owes AMT only on the excess over its regular tax

Mistakes to Avoid

Skipping Schedule I when AMTI tops $30,700. The IRS can assess the unpaid AMT plus interest back to the filing deadline.
Treating private activity bond interest as fully tax-free. It is a preference item on line 7, and ignoring it understates AMT.
Forgetting to add back state and local taxes on line 3. This is the single most common omission, and it can hide a large AMT bill.
Failing to report beneficiary AMT items in box 12 of the K-1. The beneficiary then understates their own AMT and faces a later IRS assessment.
Using the individual $88,100 exemption for a trust. A trust gets only $30,700 for 2025, so this mistake wildly understates the tax.
Running one Schedule I for an ESBT. ESBTs require two — one for the S portion and one for the rest.
Assuming a grantor trust owes AMT on Form 1041. Grantor trust income belongs on the grantor’s Form 1040, so the trust files no AMT.
Ignoring a state-level fiduciary AMT. California and a few others impose their own, separate from the federal AMT.

Do’s and Don’ts

Do run Schedule I any year the trust’s AMTI clears $30,700 — because the filing requirement is mandatory, not optional.
Do keep separate AMT records for depreciation, NOLs, and capital losses — because carryforwards differ from the regular tax.
Do check every 1099-INT box 9 for private activity bond interest — because that figure is your line 7 addback.
Do model whether distributing income lowers the trust’s AMT — because distributions shift AMT to beneficiaries with bigger exemptions.
Do confirm your state’s fiduciary AMT rule — because a few states tax it separately and the deadlines differ.
Don’t assume “small trust, no AMT” — because the $30,700 exemption traps modest trusts.
Don’t forget the 26%/28% rate break at $239,100 — because applying the wrong rate misstates the tax.
Don’t reuse last year’s exemption figure — because the amount is inflation-adjusted yearly.
Don’t distribute income blindly to dodge AMT — because it may push a worse result onto a beneficiary.
Don’t file without checking Form 8801 for a prior-year minimum tax credit — because you may be owed a credit from a year you paid AMT.

Pros and Cons of How the Trust AMT Works

Pro: Capital gains and qualified dividends keep their lower rates inside the AMT — because the rate breakpoints carry over.
Pro: Distributing income can move AMT to beneficiaries with larger exemptions — because AMT follows the distributable income.
Pro: A prior-year AMT may generate a minimum tax credit on Form 8801 — because timing items reverse over time.
Pro: OBBBA made the higher exemptions permanent — because it removed the post-2025 sunset risk.
Con: The $30,700 exemption is far smaller than the individual amount — because trusts were never given parity.
Con: The exemption phases out fast, even faster in 2026 at 50% — because OBBBA doubled the phaseout rate.
Con: Tax-free municipal income can become taxable — because private activity bond interest is a preference.
Con: ESBTs and multi-state trusts add real complexity — because multiple Schedules I and state forms may apply.

What to Do Next

Pull the trust’s draft Form 1041 and find adjusted total income on line 17 — this feeds Schedule I, line 1.
List every AMT addback: state and local taxes, private activity bond interest (1099-INT box 9), and accelerated depreciation.
If AMTI tops $30,700, complete Schedule I (Form 1041) and attach it to the return.
If the trust distributes income, fill in box 12 of each Schedule K-1 so beneficiaries report their share.
Check whether your state imposes a separate fiduciary AMT and gather that form.
File by April 15 for a calendar-year trust, or file Form 7004 for a 5½-month extension to pay-by deadline.
Call a CPA or tax attorney if the trust holds depreciable business assets, multiple states, an ESBT election, or large private activity bond holdings — these are where costly errors hide.

This article is educational and is not a substitute for advice from a licensed CPA, tax attorney, or estate attorney for your specific situation.

FAQs

Does the AMT apply to all trusts? No. For tax year 2025 it applies to nongrantor trusts and estates that file Form 1041. Grantor trusts report income on the grantor’s own return, so the trust itself does not figure AMT.

What is the AMT exemption for an estate or trust in 2025? $30,700. The exemption begins to phase out when alternative minimum taxable income tops $102,500 and disappears entirely at $225,300, per the 2025 Schedule I (Form 1041) instructions.

What are the AMT rates for a trust in 2025? 26% and 28%. The 26% rate applies to the AMT base up to $239,100, and the 28% rate applies above that. Capital gains and qualified dividends keep their lower rates.

Which form figures the AMT for a trust? Schedule I (Form 1041). You attach it to Form 1041. It figures the trust’s AMT income, the income distribution deduction on a minimum tax basis, and the AMT itself.

Can a trust pass AMT to its beneficiaries? Yes. When a trust distributes income, AMT preference items follow the money. The trust reports each beneficiary’s share in box 12 of Schedule K-1 (Form 1041) for their Form 6251.

Does distributing income reduce a trust’s AMT? Yes, often. Distributing income shifts AMT preference items to beneficiaries, who usually have a larger individual exemption ($88,100 for 2025), so the trust’s own AMT may shrink to zero.

Is municipal bond interest taxed under the trust AMT? Sometimes. Interest from specified private activity bonds is a preference item added back on Schedule I, line 7. Regular tax-exempt municipal interest from other bonds is not added back.

Do grantor trusts pay AMT? No. A grantor trust is ignored for income tax. All income, including AMT items, is reported on the grantor’s individual Form 1040 and Form 6251, not on Form 1041.

Does my state charge a separate trust AMT? Usually no. Most states have no separate fiduciary AMT. California and Connecticut are notable exceptions. States with no income tax, such as Florida and Texas, impose none.

How does OBBBA change the trust AMT? It made exemptions permanent. Starting in 2026, the One Big Beautiful Bill Act also doubles the exemption phaseout rate from 25% to 50%, so the exemption fades faster as income rises.

What happens if I skip Schedule I when it is required? You underpay. The IRS can assess the unpaid AMT plus interest from the original due date, and penalties may apply if the underpayment is substantial.

Can a trust claim a credit for AMT paid in a prior year? Yes. A trust that paid AMT in an earlier year may claim a minimum tax credit on Form 8801 for timing-related preference items that reverse in a later year.

Related reading