The tax benefits of a trust include removing assets from your taxable estate, freezing their value for transfer tax purposes, shifting income tax to beneficiaries in lower brackets, eliminating capital gains through a step-up in basis, and generating upfront income tax deductions for charitable giving. Which of these you actually get depends on the type of trust. Revocable trusts help your family skip probate but do almost nothing on taxes during your lifetime. Nearly every meaningful tax saving comes from an irrevocable trust, and the tradeoff is that you give up ownership and control of the assets you put in.
For 2026, the federal estate tax exemption is $15,000,000 per person, set by the One, Big, Beautiful Bill Act signed into law on July 4, 2025.1Internal Revenue Service. What’s New — Estate and Gift Tax Trust planning delivers the biggest tax payoff for families whose combined wealth is at or near that line.
Why the Revocable vs. Irrevocable Split Matters
A revocable living trust lets you move assets in while keeping the power to change the terms or unwind the trust entirely. Because you keep control, the IRS still treats the assets as yours. Your income taxes don’t change, and the assets stay in your estate at death. The trust’s real value is avoiding probate and getting a step-up in basis for your heirs.
An irrevocable trust asks more of you. You give up ownership and generally cannot take the assets back or rewrite the terms. In exchange, the assets leave your taxable estate, future growth on those assets no longer counts against your estate, and the trust can be structured to move income tax bills around the family. Almost every strategy below assumes this structure.
Reducing Your Federal Estate Tax
Federal estate tax hits the total value of what you own at death — real estate, investments, business interests, life insurance proceeds, and other property — minus allowable deductions. Anything above the $15,000,000 exclusion is taxed at a flat 40%.1Internal Revenue Service. What’s New — Estate and Gift Tax
Moving assets into an irrevocable trust takes them out of your gross estate. Just as important, it freezes their value for transfer tax purposes on the date you fund the trust. Put $5 million of stock into an irrevocable trust today; if it’s worth $10 million when you die, only the original $5 million counts against your lifetime exemption. The other $5 million of growth escapes estate tax altogether.
The Three-Year Rule on Life Insurance
Life insurance carries a specific trap. If you transfer a policy you already own into an irrevocable life insurance trust and die within three years, the full death benefit gets pulled back into your taxable estate.2Office of the Law Revision Counsel. 26 USC 2035 – Adjustments for Certain Gifts Made Within 3 Years of Decedent’s Death Many planners have the trust buy a new policy directly instead, because the three-year clawback applies to transfers of policies you already owned.
Portability for Married Couples
Married couples get an extra tool. When the first spouse dies, any unused portion of their $15,000,000 exemption can pass to the surviving spouse, giving a couple up to $30,000,000 in combined shelter.3Office of the Law Revision Counsel. 26 USC 2010 – Unified Credit Against Estate Tax Portability is not automatic. The executor of the first spouse’s estate has to file Form 706 and elect it, even if no tax is owed. Skip the filing and the exemption is gone.
Portability preserves the exemption amount but not future growth. If the surviving spouse simply inherits the assets and they appreciate, that growth sits in their estate. A bypass or credit shelter trust funded at the first death captures the exemption and keeps future appreciation outside the estate tax as well. Many plans use both.
Gift Tax When You Fund the Trust
Putting assets into an irrevocable trust is a gift for federal tax purposes. Two exemptions do most of the work:
- Annual exclusion: You can give up to $19,000 per recipient in 2026 with no gift tax and no use of your lifetime exemption. Married couples can combine their exclusions for $38,000 per recipient.4Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026, Including Amendments From the One, Big, Beautiful Bill
- Lifetime exemption: Gifts above the annual exclusion count against your $15,000,000 lifetime estate and gift tax exemption. You won’t actually owe gift tax until you’ve burned through the whole exemption, but each dollar used during life reduces what’s left to shelter your estate at death.1Internal Revenue Service. What’s New — Estate and Gift Tax
If a gift to the trust exceeds the annual exclusion, or the trust gives beneficiaries only a “future interest” that doesn’t qualify for the exclusion, you must file Form 709 for that year.5Internal Revenue Service. Instructions for Form 709 Married couples splitting gifts also file Form 709, regardless of amount. Filing is separate from paying.
Shifting Income Tax to Lower Brackets
Trusts have their own income tax brackets, and they are brutally compressed. For 2026, trust income above roughly $16,000 hits the top 37% federal rate, a level individual filers don’t reach until $626,350. Trusts also owe the 3.8% net investment income tax on undistributed investment income above that threshold. That compression is a strong push to send income out to beneficiaries rather than let it pile up inside the trust.
When a trust distributes income, it gets a deduction for the amount distributed, up to its distributable net income.6Office of the Law Revision Counsel. 26 USC 661 – Deduction for Estates and Trusts Accumulating Income or Distributing Corpus It pays tax only on what it keeps. Trusts required to distribute all current income get the deduction automatically.7Office of the Law Revision Counsel. 26 USC 651 – Deduction for Trusts Distributing Current Income Only
Beneficiaries report the distributed income on their own returns.8Office of the Law Revision Counsel. 26 USC 662 – Inclusion of Amounts in Gross Income of Beneficiaries of Estates and Trusts Accumulating Income or Distributing Corpus Most of them have far more room in lower brackets than the trust does, so the family’s overall tax bill drops. The income keeps its character on the way out: ordinary income stays ordinary, capital gains stay capital gains.9Office of the Law Revision Counsel. 26 USC 652 – Inclusion of Amounts in Gross Income of Beneficiaries of Trusts Distributing Current Income Only
Grantor Trusts and Intentional “Defects”
Some irrevocable trusts are built so the grantor personally pays the income tax on trust earnings. The IRS calls these grantor trusts and treats the income as the grantor’s for income tax purposes.10Office of the Law Revision Counsel. 26 USC 671 – Trust Income, Deductions, and Credits Attributable to Grantors and Others as Substantial Owners Paying the tax on someone else’s assets sounds bad, but the payments are not treated as additional gifts to the trust. The trust grows without being drained by taxes, and the grantor’s estate shrinks by the amount paid.
Planners call these intentionally defective grantor trusts. The “defect” is deliberate: the trust sits outside the grantor’s estate for estate tax purposes but inside it for income tax purposes. That split lets the grantor make what amount to tax-free extra gifts every year equal to the trust’s income tax bill.
Capital Gains and Step-Up in Basis
Buy an asset for $100,000, watch it grow to $500,000, and $400,000 of built-in gain rides along with it. How that gain gets taxed depends on the type of trust holding the asset.
Assets in a revocable living trust get a step-up in basis when the grantor dies. The basis resets to fair market value on the date of death, wiping out the accumulated gain.11Office of the Law Revision Counsel. 26 USC 1014 – Basis of Property Acquired From a Decedent Heirs who sell soon after inheriting owe little or no capital gains tax. Even though a revocable trust doesn’t cut estate tax, the step-up alone can save a family a substantial capital gains bill.
Irrevocable trusts are messier. If the trust assets are pulled back into the grantor’s gross estate for some reason (say, because the grantor kept certain rights), they qualify for the step-up. But most irrevocable trusts, including intentionally defective grantor trusts, are designed to stay out of the gross estate. In Revenue Ruling 2023-2, the IRS confirmed that assets in an irrevocable grantor trust that are not included in the grantor’s estate do not get a step-up at the grantor’s death.12Internal Revenue Service. Revenue Ruling 2023-2 Beneficiaries take the grantor’s original cost as their basis and, when they sell, owe long-term capital gains tax of up to 20% plus the 3.8% net investment income tax on the full appreciation. That’s the price of keeping the assets out of the estate.
Charitable Trust Deductions
Charitable trusts pair a tax break with a gift to charity. The two main structures are the charitable remainder trust (CRT) and the charitable lead trust (CLT).
A CRT pays income to you or your chosen beneficiaries for a set period, then sends what’s left to charity. Funding one gives you an immediate income tax deduction equal to the present value of the future charitable gift.13Office of the Law Revision Counsel. 26 USC 170 – Charitable Contributions and Gifts A CLT runs the reverse: charity gets paid first, and what remains eventually passes to your family, often at a reduced transfer tax cost.
CRTs are tax-exempt. They can sell highly appreciated assets without paying capital gains on the sale.14Office of the Law Revision Counsel. 26 USC 664 – Charitable Remainder Trusts Give a CRT a low-basis stock position that has run up, and the trust can sell and reinvest the full proceeds instead of losing up to 23.8% of the gain to federal capital gains and net investment income tax. The trust then pays you annual distributions from a diversified portfolio. The tradeoff: the assets are permanently committed to charity.
Shielding Wealth From Generation-Skipping Transfer Tax
The federal generation-skipping transfer (GST) tax hits transfers to someone two or more generations below you, typically a grandchild or great-grandchild. It exists to stop families from dodging estate tax at the children’s generation by handing assets straight to grandchildren. The GST rate matches the top federal estate tax rate, currently 40%.15Office of the Law Revision Counsel. 26 USC 2641 – Applicable Rate
Each person gets a GST exemption equal to the basic exclusion amount, or $15,000,000 for 2026.16Office of the Law Revision Counsel. 26 USC 2631 – GST Exemption Allocate that exemption to a trust when you fund it, and the assets — along with all future growth — are permanently shielded from GST tax for every generation the trust serves. A dynasty trust designed to run for multiple generations and funded with a full GST exemption allocation can move wealth from generation to generation without another estate or GST tax hit at each death. The key is the allocation at creation, before the growth happens.
State Estate and Inheritance Taxes
Federal isn’t the whole picture. Roughly a dozen states and the District of Columbia impose their own estate tax, and a handful levy an inheritance tax on the people receiving assets. State exemption thresholds are often far lower than the federal $15,000,000, and some start as low as $1,000,000. State estate tax rates run up to about 20%. Inheritance tax rates depend on the beneficiary’s relationship to the deceased: spouses and children often owe nothing, more distant relatives and unrelated heirs pay the highest rates.
Irrevocable trusts can cut state estate tax exposure the same way they cut federal exposure, by moving assets out of your taxable estate. State rules vary, though, and some states apply their own tests to decide which trusts work for state tax purposes. If you live in a state with an estate or inheritance tax, or own property in one, state planning may matter as much as the federal side.
The Filing Costs That Offset the Benefits
A trust brings annual compliance work. Build both the money and the calendar into your plan up front.
- Form 1041: A domestic trust with at least $600 in gross income must file a federal income tax return each year. For calendar-year trusts, the deadline is April 15 of the following year.17Internal Revenue Service. Instructions for Form 1041 and Schedules A, B, G, J, and K-1
- Schedule K-1: The trustee gives each beneficiary a K-1 showing their share of trust income, deductions, and credits by the same deadline.
- Form 709: The grantor files a gift tax return for any year they fund an irrevocable trust with gifts above the $19,000 annual exclusion, or with future interests that don’t qualify for the exclusion at all.5Internal Revenue Service. Instructions for Form 709
- Professional fees: Most trusts need professional tax preparation. Corporate trustees typically charge annual fees of roughly 1% to 3% of assets under management. Individual trustees often hire accountants and attorneys whose fees run from a few hundred to several thousand dollars a year depending on complexity.
Grantor trusts that report all income on the grantor’s personal return may skip a separate Form 1041 under simplified reporting methods the IRS allows, but the income still shows up on the grantor’s individual return. Missing a filing deadline draws penalties, so setting the reminders when you set up the trust pays for itself.