TrustwiseBy cocreateidea

Estate planning for unmarried couples

2026-04-25

Marriage carries automatic estate-planning protections — elective share rights, healthcare-decision priority, statutory inheritance, tax-free transfers. Unmarried partners get none of those protections by default. A couple together for 20 years, raising children, owning a home jointly, may legally be strangers when one of them is hospitalized or dies without documentation.

The good news: explicit documentation closes the gap entirely. The bad news: most unmarried couples don't have it.

What marriage does automatically that unmarried partners don't get

Statutory inheritance. A surviving spouse takes a default share of the estate even with no will. An unmarried partner takes nothing under intestacy.

Healthcare decision priority. A spouse is first in line on most state next-of-kin priority lists. An unmarried partner usually isn't on the list at all.

Hospital visitation. Spouses get presumed access. Some hospitals require formal documentation for unmarried partners.

Federal estate-tax marital deduction. Unlimited transfers between U.S.-citizen spouses are tax-free. Transfers to a partner are taxable like any other beneficiary.

Social Security survivor benefits. Spouses qualify; unmarried partners don't.

Step-parent guardianship of children. A married step-parent can usually be named guardian or co-parent more easily than an unmarried partner.

This isn't a bug. It's how the law works. The fix is documentation.

The five documents every unmarried couple needs

1. Will. Names your partner as a beneficiary. Without a will, your partner inherits zero — your assets go to relatives by intestacy.

2. Healthcare directive + healthcare power of attorney. Names your partner as your healthcare agent. Without it, your partner has no legal authority at the hospital — your parents or siblings do.

3. HIPAA authorization. Names your partner as someone who can access your medical records. Without it, the hospital can't share your status with them.

4. Durable financial power of attorney. Names your partner as your agent for financial matters if you become incapacitated. Without it, your partner can't pay your bills if you're in a coma.

5. Joint titling on shared property — or careful separate titling. A jointly titled home with right of survivorship passes to the survivor automatically. An untitled-as-joint home passes through your will (or intestacy) — and may not reach your partner.

That's the toolkit. Five documents, signed once, refreshed every few years.

Beneficiary forms — the often-missed piece

In addition to the will, retirement accounts and life insurance pass by beneficiary form. If you want your partner to receive these, you must name them on the form. Otherwise:

  • Your old beneficiary (parents, sibling, ex-spouse) takes the account.
  • The default "estate" beneficiary forces the asset through probate, which may not reach your partner depending on what your will says.

Audit every retirement account, life insurance policy, and TOD/POD bank account. Update beneficiary forms to name your partner.

Common-law marriage — sometimes

A handful of states still recognize common-law marriage: AL (limited), CO, IA, KS, MT, NH (limited), OK (limited), RI, SC, TX, UT, DC. The criteria vary — generally you must hold yourselves out as married, intend to be married, and live together for some duration. If a state recognizes common-law marriage, you may have automatic spousal rights.

But don't rely on it. The criteria are fact-specific and disputed. If you intend full marital protections without a ceremony, sign documents that establish the intent. Better still, marry — it's simpler, cheaper, and removes the ambiguity.

Children: who's a parent?

If you have children together where only one of you is the legal parent, the non-parent partner has no parental rights. If the legal parent dies, the children may go to the legal parent's relatives — even if the non-parent partner has been a co-parent for the children's entire lives.

The standard fix is second-parent adoption (where available — most states permit it). The non-parent partner adopts the children, becoming a second legal parent. After that, they have full parental rights and can serve as guardian without obstacle.

Where second-parent adoption isn't available, careful guardianship-nomination documentation reduces (but doesn't fully close) the risk. Consult a family-law attorney in your state.

Real estate: titling matters

A jointly owned home: how is it titled?

  • Joint tenancy with right of survivorship (JTWROS): Survivor takes the whole property automatically, no probate. Best for most cohabiting couples.
  • Tenancy in common: Each owns a separable share, which passes by their will (or intestacy). May or may not reach your partner.
  • Sole ownership in one partner's name: Passes by that partner's will (or intestacy). The other partner has no automatic claim.

If you both contributed to the home but only one is on title, the on-title partner needs to leave their share to the off-title partner via will. The off-title partner should keep records of contributions in case of dispute.

Hospitalization plan

Have the conversation:

  • "If something happens to one of us, the other should be the healthcare decision-maker. We need to sign healthcare directives saying so."
  • "If one of us is hospitalized, the other should have visitation rights and access to medical records. We need HIPAA authorizations."
  • "If one of us is incapacitated, the other should be able to manage finances. We need durable POAs."

Then sign the documents. The conversation takes longer than the paperwork.

What unmarried partners CAN'T do via document

Federal estate-tax marital deduction. Transfers to your partner at death are taxable like any other transfer. For estates near or above the federal exemption, this matters significantly.

Social Security survivor benefits. Unmarried partners don't qualify, regardless of documentation.

Pension survivor benefits. Most defined-benefit pensions reserve survivor benefits for spouses. Some allow named-beneficiary options; many don't.

Tax-deferred IRA rollover. A surviving spouse can roll an inherited IRA into their own. Non-spouse beneficiaries (including unmarried partners) must follow the 10-year distribution rule.

For these federal-spouse-only benefits, the workaround is marriage. There's no documentation that makes the federal government treat an unmarried partner as a spouse.

What to do this month

If you and your partner aren't married:

  1. This weekend: sign healthcare directives + POAs naming each other as agents. Free statutory short-forms exist in every state.
  2. This month: sign wills naming each other as primary beneficiaries.
  3. This month: audit retirement-account and life-insurance beneficiary forms. Update.
  4. This year: confirm joint titling on shared property is correct.
  5. Ongoing: keep documents updated as your situation changes.

The gap between unmarried-couple defaults and what most couples actually want is enormous. Documentation closes it almost entirely. The conversation is harder than the documents.

Estate planning for unmarried couples — Trustwise