Complex Trusts in New York: Taxation, Planning, and How They Differ from Simple and Grantor Trusts

Reviewed by Albert Goodwin, Esq., New York estate planning and probate attorney (admitted in New York). Last reviewed: June 2024. This page is general information, not legal or tax advice — please confirm current figures with the IRS, the New York Department of Taxation and Finance, and your own counsel before acting.

A "complex trust" is a federal income-tax classification, but for New York residents the practical consequences are governed by two overlapping systems: the federal Internal Revenue Code and New York's own trust income-tax rules under New York Tax Law Article 22. Many national articles explain Form 1041 and the federal definitions; few explain how New York actually taxes the same trust — which is often where the real planning opportunities (and traps) live. This page focuses on that New York layer while giving you the federal framework you need to understand it.

What a Complex Trust Is (and Is Not)

For federal purposes there are three working categories:

• Grantor trust — the grantor retains a power or interest listed in 26 U.S.C. §§ 671–677 (reversionary interest, power to control beneficial enjoyment, certain administrative powers, power to revoke, or the right to trust income). The grantor is taxed on trust income directly.
• Simple trust — a non-grantor trust that, under 26 C.F.R. § 1.651(a)-1, in a given year (a) distributes all of its income, (b) makes no principal distributions, and (c) makes no charitable distributions.
• Complex trust — any non-grantor trust that, in a given year, does any one of the following: accumulates income, distributes principal, or makes charitable distributions.

A single trust can be a simple trust in one year and a complex trust the next, depending on what the trustee actually does. The trustee declares the classification on IRS Form 1041 each year.

Examples of trusts that are inherently complex include the nonexempt charitable trust under 26 U.S.C. § 4947(a)(1), split-interest trusts under § 4947(a)(2), and charitable remainder trusts under 26 U.S.C. § 664.

Why the Classification Matters: Who Pays the Tax

The classification answers a single high-stakes question: who pays income tax on the trust's earnings?

• Grantor trust: the grantor reports trust income on his or her own Form 1040 using the grantor's Social Security number — no separate trust return is generally required.
• Simple/complex trust with distributions: income carried out to beneficiaries is taxed to the beneficiaries via Schedule K-1, which they report on their Form 1040 or 1040-SR.
• Complex trust retaining income: the trust itself pays tax on retained income — and that is where the cost stings.

Trusts hit the top brackets far faster than individuals. For the 2024 tax year, a non-grantor trust reaches the top federal rate of 37% on undistributed taxable income over only $15,200, and the 3.8% net investment income tax can apply above roughly that same threshold. By contrast, a single individual does not reach 37% until taxable income exceeds $609,350 (2024). (Always verify current-year figures, which the IRS adjusts annually for inflation.)

How New York Taxes Trusts — The Part Most Guides Skip

New York does not simply mirror the federal rules. Under New York Tax Law Article 22, the threshold question is whether the trust is a New York resident trust or a nonresident trust.

What makes a trust a "New York resident trust"?

Under N.Y. Tax Law § 605(b)(3), a trust is a New York resident trust if it was created by:

• the will of a decedent who was a New York domiciliary at death (a testamentary trust); or
• a New York domiciliary grantor (a lifetime/inter vivos trust), measured at the time the trust became irrevocable.

Critically, residency for a trust is fixed by the domicile of the testator or grantor — not by where the trustee or beneficiaries currently live. A trust created by a New Yorker can remain a New York resident trust for decades even after everyone connected to it has moved away.

The New York "exempt resident trust" exception

This is the planning point national articles never address. Even a New York resident trust pays no New York income tax in a year in which it meets all three of the conditions in Tax Law § 605(b)(3)(D):

1. all trustees are domiciled outside New York;
2. the entire corpus, including real and tangible personal property, is located outside New York; and
3. all income and gains are derived from sources outside New York (intangible property is generally treated as not having a New York source).

If a complex trust accumulates income and meets these tests, the accumulated income can escape New York income tax during the accumulation years — though New York's accumulation distribution / "throwback" rules under Tax Law § 612(b)(40) and § 658(f) can recapture tax on certain later distributions of previously untaxed accumulated income to New York resident beneficiaries. Structuring around this exception requires care; it is not a loophole to be assumed.

What a New York trust files

A resident or nonresident trust with New York taxable income or a New York filing obligation files Form IT-205, Fiduciary Income Tax Return, with the New York Department of Taxation and Finance, generally accompanying the federal Form 1041. Beneficiaries receive a New York IT-205-A / K-1 equivalent reflecting their share. A grantor trust, taxed to the New York–resident grantor, flows onto that individual's Form IT-201.

A Worked New York Example

Suppose a non-grantor trust created by a New York City decedent earns $60,000 of dividends and interest in 2024.

• Scenario A — trust retains all income (complex trust): The trust pays federal tax climbing quickly into the 37% bracket above $15,200, may owe the 3.8% NIIT, and — if it is a non-exempt New York resident trust — also pays New York fiduciary income tax on top. Combined federal plus New York City–level exposure on retained income can be substantial.
• Scenario B — trust distributes all income to a beneficiary (simple trust that year): The income is carried out on a K-1 and taxed at the beneficiary's individual rates. A beneficiary with modest other income may pay far less than 37%, and if that beneficiary is a non–New York resident, the trust's distributed intangible income generally is not subject to New York tax in his hands.
• Scenario C — exempt resident trust accumulating income: If the trust meets all three § 605(b)(3)(D) conditions, the accumulated income may avoid New York tax in the accumulation year — subject to potential throwback when later distributed to a New York beneficiary.

The lesson: a New York trustee's annual distribution decisions, the residency of beneficiaries, and the location of trustees and assets can each move the tax outcome dramatically. The same trust document can produce very different results depending on how it is administered.

Complex Trusts and the New York Estate Tax

Income tax is separate from estate tax. New York imposes its own estate tax with a 2024 basic exclusion amount of approximately $6.94 million (indexed annually) and a notorious "cliff": if a New York taxable estate exceeds 105% of the exclusion, the entire estate — not just the excess — becomes taxable. A properly drafted irrevocable complex trust that removes assets from the grantor's taxable estate can help manage that cliff, whereas a revocable grantor trust does not reduce the New York estate. Whether assets are inside or outside your New York taxable estate turns on the structure of the trust, not on whether it is "simple" or "complex" for income-tax labeling.

A Decision Framework for New Yorkers

1. Identify the goal first. Probate avoidance, creditor protection, special-needs preservation, charitable giving, or New York estate-tax reduction each point to different structures.
2. Decide who should bear the income tax. If beneficiaries are in lower brackets, distributing income (simple-trust years) usually beats accumulation in the trust's compressed brackets.
3. Check New York residency and the exempt-trust conditions. Where are the trustees? Where are the assets? Where do the beneficiaries live?
4. Coordinate with estate-tax exposure. Income-tax savings should not accidentally pull assets back into a taxable New York estate.
5. Revisit annually. Because a trust's classification can change year to year, administration matters as much as drafting.

Related New York Trust and Estate Topics

Complex-trust planning rarely stands alone. Depending on your goals, you may also want to read:

• Advanced New York estate planning techniques
• Benefits of a living (revocable) trust
• Advantages and disadvantages of a testamentary trust
• What assets can and cannot go into a revocable trust
• Benefits of a special needs trust

Frequently Asked Questions

Do I have to file Form 1041 for a New York trust?

A non-grantor trust (simple or complex) must file federal Form 1041 if it has any taxable income, gross income of $600 or more, or a nonresident alien beneficiary. A New York resident or nonresident trust with New York filing obligations also files Form IT-205. A grantor trust generally reports through the grantor's own individual returns instead.

Can a complex trust avoid New York income tax?

Possibly, if it qualifies as an "exempt resident trust" by meeting all three conditions of N.Y. Tax Law § 605(b)(3)(D) — non-New York trustees, out-of-state corpus, and no New York-source income — but New York's throwback rules can later tax accumulated income distributed to a New York resident beneficiary. This requires careful structuring.

Can a complex trust reduce my New York estate tax?

An irrevocable trust that genuinely removes assets from your taxable estate can help, especially given New York's estate-tax "cliff." A revocable trust does not reduce New York estate tax because the assets remain yours for estate-tax purposes.

Is a SLAT a complex trust?

A Spousal Lifetime Access Trust is typically structured as a grantor trust (the grantor's spouse's interest is attributed to the grantor under 26 U.S.C. § 672), so the grantor pays the income tax while the assets can be removed from the taxable estate. Its income-tax classification differs from the complex-trust analysis above.

Does my trust become a New York trust if I move out of state?

For a trust you created during life, New York residency is generally fixed by your domicile when the trust became irrevocable. For a testamentary trust, it is fixed by the decedent's domicile at death. Moving later does not automatically change the trust's New York residency status.

Speak With a New York Trust Attorney

Choosing among grantor, simple, and complex trust treatment — and structuring administration to take advantage of New York's resident-trust rules — is fact-specific work that combines income-tax, estate-tax, and Surrogate's Court considerations. If you would like to discuss your New York estate plan, the Law Offices of Albert Goodwin can help. Call 1-800-600-8267 or email [email protected].