Estate Planning for Unmarried Same-Sex Couples: The 5 Documents You Can't Skip

I hear some version of this almost every week. "We have been together for seven years. We own a home together. We are definitely getting married eventually. Are we okay for now?" The honest answer is: not without the right estate planning for unmarried same-sex couples in place. Marriage equality changed a huge amount for LGBTQ+ couples — but it did not change this one thing: if you are not legally married, the law treats your partner as a stranger when something goes wrong.

This post is not about whether you should get married. That is entirely your call. (If you are weighing it, our breakdown of the marriage penalty for high-earning same-sex couples walks through the actual numbers.) This post is about what to do with your finances and your legal documents given where you are right now.

What Legal Protections Do Unmarried Same-Sex Couples Automatically Lose?

Without legal marriage, the government gives you no automatic protections as a couple — even after years together or owning a home jointly. If something happens to you, the law may treat your partner as a legal stranger. The right documents change that entirely.

Here is what that looks like in practice:

• If you die without a will, your state decides who inherits your assets. In most states, that means your biological family ("next of kin") — not your partner.
• If you are rushed to the hospital and cannot speak for yourself, the hospital will call your legal next of kin. That may not be your partner.
• If you become unable to manage your finances, courts may appoint someone to do it for you — possibly a family member your partner has never met.
• Your partner has no automatic right to your retirement accounts, life insurance, or bank accounts.

According to research from the Williams Institute at UCLA, only 37% of LGBTQ+ adults have a will or estate plan, compared to over 60% of heterosexual adults. For unmarried LGBTQ+ couples, that gap is not just a number. It is real legal exposure sitting in the background of your life. (For a married-or-partnered overview that complements this guide, see the 5 legal documents every LGBTQ+ couple needs.)

Is There a Tax Benefit to Staying Unmarried as a Same-Sex Couple?

For two high earners who make similar incomes, staying unmarried sometimes means a lower combined tax bill. When both partners file as single filers, their income is taxed separately — which can avoid the "marriage penalty" that pushes high-income married couples into higher brackets. This is context, not a recommendation to avoid marriage.

The tax filing flexibility of staying unmarried is real for some couples — but it does not outweigh the legal protections you give up. This is context, not a reason to avoid marriage. The right move depends on your full financial picture. The full numbers are in our dedicated post on the marriage penalty for high-earning same-sex couples.

What Are the Five Essential Estate Planning Documents for Unmarried Same-Sex Couples?

The five documents that protect unmarried same-sex couples are: a will or living trust, a durable power of attorney, a healthcare power of attorney, updated beneficiary designations, and a cohabitation agreement. Each one closes a specific legal gap. Without all five in place, you are relying on laws that were not written with your relationship in mind.

1. A Will (or Living Trust)

A will is a legal document that says who gets your money and property when you die. Without one, your state decides — and your partner is almost certainly not on that list. A living trust does the same job, but with one big bonus: your assets can pass directly to whoever you choose, without going through a court process called probate. Probate is time-consuming, expensive, and public. In 2026, the federal estate tax exemption is $15,000,000 per person, made permanent under the One Big Beautiful Bill Act. For most people, the concern is not federal estate tax — it is making sure your partner actually receives what you intend without a legal fight.

2. Durable Power of Attorney

A power of attorney is a document that lets someone you trust handle your finances if you cannot. Without one, banks and financial institutions will not let your partner touch your accounts — even if you have shared finances, a shared home, and a shared life. The word "durable" matters. A regular power of attorney expires if you become incapacitated. A durable power of attorney stays in effect exactly when you need it most.

3. Healthcare Power of Attorney

This document names your partner as the person who makes medical decisions for you if you cannot make them yourself. Without it, hospitals default to legal next of kin. For LGBTQ+ couples, that can mean a biological family member who does not know you, does not accept your relationship, or actively opposes your partner having any say. Pair this with an Advance Healthcare Directive. In California, you can register your Advance Healthcare Directive with the Secretary of State, making it accessible to hospitals statewide in an emergency.

4. Beneficiary Designations

Beneficiary designations on retirement accounts and life insurance policies override your will completely. If an ex-partner or a biological family member is still listed on an account you opened years ago, they legally receive that money regardless of what your will says. Go through every account you have and update these — now, not eventually. (If you are also building a family, our guide to the financial side of IVF and surrogacy covers how children change beneficiary planning in a big way.)

5. Cohabitation Agreement

If you and your partner live together — especially if one of you owns the home — a cohabitation agreement protects both of you in ways the other documents do not cover. It clarifies who owns what, how shared expenses work, and what happens to property if the relationship ends. This is not romantic to think about. But it is one of the most practical and loving things a couple who shares a home can do for each other. For a broader look at merging financial lives without losing your individual footing, see our practical guide to combining finances as an LGBTQ+ couple.

How Often Should You Review Your Estate Planning Documents?

At minimum, review your estate planning documents for unmarried same-sex couples once a year. Also review them after any major life change: buying a home, moving to a new state, a child entering the picture, or any shift in the political landscape affecting LGBTQ+ legal protections where you live.

A document that is valid in California may not carry the same legal weight in every other state. If you relocate, review your documents before or right after the move. The current political environment adds urgency here — we cover this in more depth in How LGBTQ+ Couples Can Plan Ahead in Uncertain Times. A properly prepared estate plan from an LGBTQ+-affirming attorney is your most reliable protection, regardless of what any state legislature does.

Frequently Asked Questions

Does my partner automatically inherit my home if I die?

It depends on how the home is titled. If you own it as joint tenants with right of survivorship, your partner inherits your share automatically. If it is titled as tenants in common, your share goes through your estate — and without a will, that means biological relatives, not your partner. Check your property deed.

We are planning to get married soon. Do we still need these documents?

Yes. Until the moment you are legally married, you are not married in the eyes of the law. The time between "planning to get married" and "actually married" is when most people are unprotected. Basic estate planning documents are relatively fast and affordable to put in place.

Can my partner access my retirement accounts if something happens to me and we are not married?

Only if you have named them as the beneficiary on the account. Without that designation, your retirement accounts pass according to the account's default rules — usually to biological heirs. Beneficiary forms on retirement accounts override everything else, including your will.

How much does it cost to put these documents in place?

A basic estate planning package for unmarried same-sex couples — will, powers of attorney, healthcare directive — typically costs $500 to $1,500 with an attorney who specializes in LGBTQ+ estate planning. A full living trust is more, often $2,500 to $5,000 or above depending on complexity.

Go Deeper

Want to go deeper? I built Level Ground for exactly this — a free five-day email course for LGBTQ+ professionals who are ready to take their finances seriously. We cover legal protections, family-building costs, what marriage equality actually unlocked, and how to close the retirement gap in our community. No fluff, no pitch. Just the map I wish I had.

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