LGBTQ+ Inheritance & Estate Tax Planning: The Wealth Transfer Gap

How legal relationship status creates real dollar differences when one partner dies — and what domestic partners can do about it. Not legal or financial advice; qualified counsel is required for your specific situation.

The federal tax code draws a sharp line between legally married and everyone else when it comes to inheriting from a partner. For LGBTQ+ couples, that line can cost hundreds of thousands of dollars depending on asset size, IRA balances, and state of residence. This guide breaks down the three biggest gaps — the marital deduction, inherited IRA rules, and gift tax asymmetry — and the strategies available for domestic partners who can't, or haven't yet, married.

Table of contents

1. The unlimited marital deduction: married same-sex couples vs. domestic partners
2. The inherited IRA gap: spousal rollover vs. the 10-year rule
3. Gift tax asymmetry: transferring assets between partners
4. State estate taxes: the lower-threshold problem
5. Strategies for domestic partners
6. Strategies for married same-sex couples
7. Action checklist

1. The unlimited marital deduction: what it is and who qualifies

IRC §2056 allows a deceased person to transfer an unlimited amount of assets to a surviving spouse with zero federal estate tax — no cap, no limit. If one spouse has a $10 million estate, the entire amount can pass to the surviving spouse estate-tax-free. The tax deferred at the first death is collected (if applicable) when the surviving spouse later dies.

After United States v. Windsor (2013) and Obergefell v. Hodges (2015), legally married same-sex couples have full access to the unlimited marital deduction. The IRS recognized these marriages for federal tax purposes starting in 2013 for same-sex couples married in a state that recognized their marriage at the time.

Domestic partners do not qualify. Regardless of how long a couple has been together, whether they have children, how intertwined their finances are, or whether their state has a domestic partnership registry: if they are not legally married under state law, the unlimited marital deduction is unavailable. Every dollar above the $15 million individual exemption (2026 amount, OBBBA permanent)¹ that passes to a domestic partner is potentially subject to federal estate tax at 40%.

Portability of the exemption: married couples only

Married couples have an additional advantage called portability. When the first spouse dies, any unused portion of their $15 million exemption can be transferred to the surviving spouse — creating a potential $30 million combined exemption (plus future inflation adjustments). To capture this, the surviving spouse must file Form 706 (the estate tax return) within the portability election deadline, even if no estate tax is owed. Domestic partners have no portability — the deceased partner's unused exemption evaporates.

2. The inherited IRA gap: spousal rollover vs. the 10-year rule

This is where the wealth transfer gap hits most LGBTQ+ households, regardless of total estate size. Any couple where one partner has a meaningful IRA, 401(k), or 403(b) balance will face this issue.

What a surviving spouse can do

A legally married surviving spouse who inherits a retirement account can elect a spousal rollover — treating the inherited IRA or 401(k) as their own account. The account continues to grow tax-deferred, and RMDs don't start until the surviving spouse reaches their own required beginning date (age 73 for those born 1951–1959; age 75 for those born 1960 and later, per SECURE 2.0 §107). For a 55-year-old surviving spouse inheriting a large IRA, this means 18–20 more years of tax-deferred compounding before RMDs begin.

What a domestic partner must do

A domestic partner is a non-spouse beneficiary. Under the SECURE Act's 10-year rule, a non-spouse inheritor must empty the entire inherited account by the end of the 10th year after the original account holder's death. Under IRS regulations finalized in 2024 (T.D. 10001), if the original account holder had already passed their required beginning date and was taking RMDs, the beneficiary must also take annual RMDs during years 1–9 — not wait to take it all in year 10.

What the gap costs in practice

Consider a 57-year-old domestic partner who inherits a $600,000 rollover IRA. Their partner had just turned 73 and recently started RMDs. Under T.D. 10001 rules, the surviving partner must take annual RMDs in years 1–9 and clear the account by year 10. Each distribution is ordinary income. If the survivor is in the 24% or higher bracket:

The actual gap depends on the survivor's other income, the account balance, and investment growth during the 10-year period. But for a domestic partner inheriting $500K–$1M+ in pre-tax retirement accounts, the incremental federal income tax versus a spousal rollover typically runs $100K–$300K or more.

3. Gift tax asymmetry: transferring assets between partners

Married couples can give each other unlimited assets at any time with no gift tax, no reporting required, and no reduction of the lifetime exemption (IRC §2523 — the unlimited gift tax marital deduction). One spouse can fund the other's IRA, pay off the other's mortgage, buy a house solely in the other's name: zero gift tax consequences.

Domestic partners have no such exemption. Gifts between domestic partners are treated the same as gifts to strangers:

• Annual exclusion (2026): $19,000 per recipient.¹ You can give your domestic partner up to $19,000/year without any gift tax or reporting obligation. Above that, the excess reduces your $15 million lifetime exemption.
• Lifetime exemption (2026): $15,000,000 per person.¹ If you transfer $100,000 to your domestic partner in one year, the $81,000 excess uses $81,000 of your lifetime exemption. You still have $14,919,000 left — but if you die with a taxable estate, this reduces the shield available to your heirs.
• Gift tax return (Form 709): any gift above the annual exclusion requires reporting on Form 709, even if no tax is owed in the current year (because you're drawing on the lifetime exemption, not paying tax immediately).

The practical impact

For couples well under the $15M lifetime exemption, the gift tax asymmetry rarely creates an immediate tax bill. The practical issue is different: asset equalization between partners requires reporting, coordination with a tax advisor, and careful structuring that married couples never need to think about. The bigger risk is behavioral — couples who don't understand the rules may make large informal transfers without reporting, creating IRS compliance exposure.

The gift tax matters more directly for domestic-partner couples who have been together for decades and have naturally unequal estates — common in situations where one partner was a high earner or inherited significant assets. Equalizing estates before death (to use both partners' $15M exemptions and reduce the surviving partner's estate tax exposure) works best when done early, using the annual $19,000 exclusion systematically over many years.

4. State estate taxes: the lower-threshold problem

Twelve states plus Washington, D.C. impose their own estate taxes, independent of the federal rules. State exemptions are dramatically lower than the $15 million federal level — some starting under $2 million. For domestic partners in states with estate taxes, the lack of a state-level marital deduction can create real tax bills even for households that are well under the federal threshold.

States with estate taxes and relatively low exemptions include Oregon, Massachusetts, Washington, Hawaii, Illinois, Maryland, Minnesota, New York, and Vermont, among others. The specific exemption amounts and rates change periodically — if you live in a state with an estate tax, verify current thresholds with a CPA or estate planning attorney licensed in that state.

5. Strategies for domestic partners

If marriage isn't the plan (or hasn't happened yet), these strategies reduce the wealth transfer gap:

Annual gifting — systematic and sustained

Use the $19,000 annual exclusion each year to shift assets from the higher-net-worth partner to the lower. Over 10 years, that's $190,000 transferred tax-free. The goal is gradual estate equalization so both partners' $15M exemptions are available and neither estate vastly exceeds the exemption.

Roth conversion strategy for the IRA gap

If one partner has a large traditional IRA, converting to Roth while the account holder is alive eliminates the income tax problem for the surviving domestic partner. Yes, Roth IRAs are still subject to the 10-year rule for non-spouse inheritors — but the distributions are tax-free. Converting $200K/year during the 10 years before expected death could shift hundreds of thousands into Roth territory, dramatically reducing what the domestic partner owes in income tax under the 10-year rule.

Optimal Roth conversion amounts depend on the account holder's tax bracket now vs. the surviving partner's projected bracket during the 10-year distribution window. This requires multi-year modeling with a fee-only advisor.

Life insurance owned by the surviving partner

A life insurance policy pays a death benefit outside the estate — no estate tax, no income tax. If one partner owns a policy on the other's life, the death benefit passes directly to them as beneficiary, tax-free. For domestic partners concerned about the inherited IRA gap, structuring a life insurance policy (term or permanent) can offset the extra income tax hit from the 10-year rule. The surviving partner uses the tax-free death benefit to cover the income taxes owed on inherited IRA distributions.

Trust structures

A revocable living trust allows domestic partners to structure distributions to each other with more flexibility than outright bequests — including the ability to hold assets for the survivor's benefit during their lifetime while ultimately passing to other beneficiaries. An irrevocable life insurance trust (ILIT) holds a life insurance policy outside of both partners' taxable estates, so neither the premiums nor the death benefit count toward estate tax. An estate planning attorney who works with LGBTQ+ families can identify which trust structures match your specific goals.

Beneficiary designations

Beneficiary designations on IRAs, 401(k)s, and life insurance are the most direct and inexpensive tool available. They pass assets outside probate directly to the named person — no will required, no estate administration delay, no state court involvement. For domestic partners who lack the marital deduction, making sure every beneficiary designation is correct and current is especially critical. One unfiled change-of-beneficiary form can route a $500K IRA to the wrong person, and there's no "intent" override.

Marriage: the direct fix

For couples who are committed and have no structural reason to avoid legal marriage, the simplest solution to most of these issues is legal marriage. The unlimited marital deduction, spousal IRA rollover, portability of exemption, and unlimited inter-spousal gifting become available immediately. This is worth at least a serious conversation with an LGBTQ+-affirming estate planning attorney who can walk through your specific situation before you decide.

6. Strategies for married same-sex couples

Married same-sex couples have full access to federal marital deductions and spousal IRA rules — but there are LGBTQ+-specific planning issues that general estate planning guides miss.

Portability election — don't miss the deadline

After the first spouse dies, the surviving spouse must file Form 706 to elect portability and capture the deceased spouse's unused exclusion amount (DSUEA). Rev. Proc. 2022-32 allows a late portability election up to 5 years after the date of death without an IRS private letter ruling — but this only applies if the estate was below the filing threshold and no Form 706 was otherwise required. Don't assume portability happens automatically. If your estate attorney or CPA doesn't bring this up at the time of death, ask explicitly.

Obergefell marriage date and Social Security

For Social Security spousal and survivor benefits, the SSA uses the actual date of legal marriage — not the date the couple began living together or the date a state law changed. If you married legally before Obergefell in a state that recognized same-sex marriage (e.g., California, Massachusetts), your marriage date for SSA purposes is the earlier legal date. This matters for the 10-year marriage requirement for divorced spousal benefits and the 9-month requirement for survivor benefits. See the Social Security for Same-Sex Couples guide for full detail.

Community property step-up

Married same-sex couples who live in community property states (California, Arizona, Nevada, Washington, Idaho, New Mexico, Texas, Louisiana, Wisconsin, and Alaska by election) receive a significant tax benefit at the first spouse's death. Under IRC §1014(b)(6), the entire community property — not just the deceased spouse's half — gets a step-up in cost basis to fair market value at the date of death. For couples with highly appreciated assets (stock from a concentrated position, a home bought 20 years ago), this can eliminate a substantial embedded capital gains liability. Domestic partners in community property states generally do not receive this treatment unless their state's law explicitly extends community property rules to registered domestic partners (California's Family Code §297.5 does; others vary).

IRA spousal rollover — an affirmative election

The spousal rollover isn't automatic. A surviving spouse must affirmatively elect it by completing the IRA custodian's transfer form. If a surviving same-sex spouse simply starts taking distributions from an inherited IRA without making the rollover election, they may lock in non-spouse treatment and lose the deferral option. Act quickly after a spouse's death — contact the IRA custodian and explicitly request the spousal rollover election. Bring documentation of your legal marriage.

7. Action checklist

For domestic partners

• ☐ Confirm every beneficiary designation on every IRA, 401(k), and life insurance policy — make sure your partner is named correctly
• ☐ Run the numbers on Roth conversion strategy for any large traditional IRA — model what the 10-year rule costs your partner vs. converting pre-death
• ☐ Calculate your estate equalization gap and set up an annual gifting plan using the $19,000 annual exclusion
• ☐ Verify whether your state imposes its own estate tax and whether domestic partners qualify for the state marital deduction
• ☐ Work with an estate planning attorney to update wills, trusts, POAs, and healthcare proxies — document what you want with the force of law
• ☐ Model whether life insurance (owned by the surviving partner) can offset the income tax cost of the 10-year inherited IRA rule
• ☐ Revisit marriage as a planning tool if there's no structural reason to avoid it — the direct solutions to most of these gaps are available at the county clerk's office

For married same-sex couples

• ☐ Confirm all beneficiary designations show your legal spouse as primary beneficiary
• ☐ Know your Obergefell marriage date vs. date of civil union or commitment ceremony — these affect SSA benefit calculations
• ☐ Designate a trusted person (or attorney) to file Form 706 and elect portability after the first spouse's death — add this to your estate plan instructions
• ☐ If you live in a community property state, review which assets are community property and which are separate — the double step-up at death only applies to CP assets
• ☐ Review estate plan documents for any references to "husband/wife" language that predates your marriage — update to reflect your actual relationship and legal names
• ☐ If one spouse has a significantly larger estate, model whether a SLAT (spousal lifetime access trust) makes sense to shift assets and use the $15M exemption while both spouses are alive