Living With a Credit Shelter Trust: HEMS, Taxes and Basis

If your husband’s plan created a credit shelter trust, somewhere in it is a sentence that divided his property in two at the moment he died. One part came to you, outright or in a marital trust. The other went into a trust built to use his federal estate tax exclusion, variously called a credit shelter, bypass or family trust. You may be its main beneficiary, even its trustee, yet it is not quite yours: it was designed to pass to your heirs without being taxed in your estate.

That design made clear sense when it was drafted. It may make less sense now, and it will shape your income and taxes for life. This guide will help you read the funding formula, judge what you may ask the trustee for, understand the trust’s taxes and basis, and decide whether to ask counsel about changing it.

How the formula divided his estate

Two federal rules drove the split. Section 2056 of the Internal Revenue Code allows an uncapped deduction for property passing to a U.S.-citizen surviving spouse, including a trust that pays you all its income at least annually and that no one can appoint to anyone else during your life, if the executor elected that treatment. Section 2010 gives every estate a credit sheltering a set amount from tax: the “credit” in credit shelter. Your share used the marital deduction; the bypass trust used his credit and was meant to stay outside your taxable estate.

Many plans funded the bypass trust by formula, typically the largest amount that could pass free of federal estate tax. That amount has moved. The statute’s amendment history shows $625,000 for 1998 deaths, $1,000,000 for 2002 and 2003, and $3,500,000 for 2009; for 2026 deaths it is $15,000,000. A formula written for one number and applied to a far larger one can send more into the bypass trust, and less to you outright, than your husband may have pictured. Check, too, whether it measures a federal or a state exclusion.

When your own disclaimer funded the trust

Some plans left everything to you, with anything you disclaimed passing into a credit shelter trust for your benefit. Under section 2518, a qualified disclaimer must be an unqualified, irrevocable refusal in writing; it must be received within nine months after the later of the transfer that created your interest or your 21st birthday, made before you accepted the property or its benefits, and effective so the property passes without any direction from you. The statute expressly lets disclaimed property pass to the decedent’s spouse, which is why the trust can still support you.

That no-direction condition is the price, so counsel will check any power the trust gives you, such as choosing among your children at your death. If your husband died recently, this is a live decision with a hard deadline. If the window has closed, confirm that the signed disclaimer and proof of delivery are on file.

What “health, education, maintenance and support” allows

Read two provisions separately: whether net income must be paid to you or only at the trustee’s discretion, and the standard for reaching principal.

The phrase health, education, maintenance and support, or HEMS, is not ornamental. Section 2041 of the Code treats a power to take property for yourself as a general power of appointment, which would pull the trust into your estate, unless it is limited by an ascertainable standard relating to health, education, support or maintenance. The Uniform Trust Code, a model statute each state may adopt, adapt or ignore, builds this in: under section 814, a beneficiary who is also trustee, and not the settlor, may make discretionary distributions to herself only under that standard, unless the trust expressly says otherwise.

Treasury regulations say an ascertainable standard includes support in reasonable comfort, maintenance in health and reasonable comfort, education, and medical or hospital expenses. That does not make every expense automatic: the trust’s exact words, its purposes, your accustomed standard of living, the trustee’s discretion and state law still matter. A gift to a grandchild or a purely recreational purchase may fall outside the standard. Whether the trustee must weigh your other resources first also depends on the instrument and governing law. A written distribution policy serves you better than negotiating each request.

Who holds the discretion

The trustee might be you, a co-trustee beside you, a grown child or a trust company. As sole trustee you hold the checkbook, but you owe duties to the remainder beneficiaries, and the HEMS limit binds you personally. The Uniform Trust Code lets the remaining co-trustees who are not so limited exercise that power, one reason families add an independent trustee.

Where a state’s enacted version follows the model, section 814 requires even a trustee granted “absolute” or “sole” discretion to act in good faith and in keeping with the trust’s terms, its purposes and the beneficiaries’ interests. Section 813 supplies information and reporting duties, including an annual report to distributees or permissible distributees of trust income or principal. Your state’s version may differ from the Uniform Trust Code’s 2025 text. If you are now trustee, our guide to successor trustee duties sets out the first year’s work.

A separate taxpayer with compressed brackets

Under the IRS’s current Form 1041 instructions, a domestic trust taxable under section 641 must file if it has any taxable income, gross income of $600 or more, or a nonresident-alien beneficiary. A simple trust generally receives a $300 exemption and most complex trusts $100; grantor-trust treatment and special trust classifications can change the filing method or exemption. Our guide to the estate income tax return explains the form.

For 2026, Revenue Procedure 2025-32 taxes trust income at 10% up to $3,300, 24% up to $11,700, 35% up to $16,000 and 37% above that. A single individual does not reach 37% until taxable income exceeds $640,600. The trust’s zero rate on long-term gains and qualified dividends stops at $3,300 of taxable income, its 15% rate at $16,250. Section 1411 adds a 3.8% tax on the lesser of undistributed net investment income or adjusted gross income above the start of the top bracket, $16,000 under the 2026 schedule.

Income paid or credited to you, up to the trust’s distributable net income, is generally deducted by the trust and reported to you on Schedule K-1, and a complex trust’s trustee may elect to treat qualifying distributions made within 65 days after year-end as made on the prior year’s last day. Capital gains are commonly allocated to principal and excluded from distributable net income, but the document, local law and the trustee’s consistent treatment can change that result. Property distributed to you becomes part of your own balance sheet and may later be included in your estate; ask for both income-tax and estate-tax effects to be modeled each autumn.

The step-up that happens only once

Section 1014 generally gives inherited property a basis equal to its fair market value at the decedent’s death, or at the alternate valuation date if elected. The bypass trust’s assets generally received that adjustment when your husband died. The section also reaches qualifying property included in a decedent’s gross estate and expressly covers QTIP property that section 2044 brings into the survivor’s estate. The bypass trust was built to stay out of your estate, so its assets generally receive no new basis when you die.

Suppose, purely as an illustration, the trust was funded in 2008 with $2 million of securities, matching that year’s $2,000,000 exclusion for a decedent with no exclusion-reducing prior gifts, and is worth $6 million at your death after little trading. It could carry roughly $4 million of unrealized gain to your heirs; had those same assets instead been includible in your gross estate and still qualified under section 1014, basis would generally have reset to $6 million. Whether that exchange paid off depends on whether your estate would otherwise have been taxable. Our guide to inherited property basis covers the records.

A properly structured bypass trust generally keeps wealth out of your estate, and that exclusion usually means no second basis adjustment at your death.

Why portability can make the structure less efficient

For a spouse who died after December 31, 2010, section 2010 lets the executor elect, on a timely filed estate tax return, to pass his unused exclusion to you. Revenue Procedure 2022-32 offers a simplified late election on or before the fifth anniversary of death, but only for estates not otherwise required to file. The executor may supersede an election before the Form 706 due date, including extensions actually granted; after that due date it becomes irrevocable. The usable amount generally comes from your last deceased spouse, which matters if you remarry, although DSUE already applied to gifts before a later spouse’s death is not retroactively lost. Public Law 119-21 set the basic exclusion at $15,000,000 for 2026 deaths, with inflation adjustments thereafter. Our guide to preserving the unused exclusion covers the election.

If everything, the trust included, would sit comfortably below your own exclusion plus what portability could have carried over, the trust’s costs (compressed brackets, trustee fees, annual returns and the lost second step-up) may exceed any federal estate tax it saves. The trust still does what portability cannot: it keeps post-death growth outside your estate, protects children of an earlier marriage, and may shield assets from creditors or a future spouse, depending on its terms and state law. State estate taxes follow their own rules.

Changing a trust that no longer fits, with counsel

The tools belong to state law, and each needs counsel. Uniform Trust Code section 111 lets interested persons make a binding nonjudicial settlement agreement on any matter involving a trust, if it does not violate a material purpose and contains terms a court could properly approve, such as interpreting terms, approving accounts, replacing a trustee or moving the place of administration.

Decanting goes further: under an applicable state statute, an authorized fiduciary may be able to move assets into a second trust without settlor consent. The Uniform Trust Decanting Act sets different limits depending on the fiduciary’s distributive discretion and protects tax-related purposes, but a state’s enacted text, notice rules and the original instrument control. A change that seems administrative can still affect income, gift, estate or generation-skipping tax treatment. Whether your state permits decanting or another modification route, and on what terms, must be checked before anyone signs or transfers assets.

Questions to bring to the trustee and your attorney

1. What does the funding formula say, and which assets went into each share, at what values?
2. Must the trust pay me all net income, and what standard governs principal?
3. Must the trustee weigh my other resources before a distribution?
4. Who may replace the trustee, and would an independent co-trustee help?
5. What did the trust pay in income tax last year, and what would larger distributions have changed?
6. What is the trust’s basis in each holding, and how large is the embedded gain?
7. Was portability elected on my husband’s estate tax return, and where is that return?
8. Does our state permit decanting or a nonjudicial settlement agreement, and at what tax cost?

This article provides general U.S. educational information and is not legal, tax, trust, or investment advice. Confirm current rules with the IRS and with an attorney and tax adviser who have read your trust.