Best Estate Planning Guide for Unmarried Couples in South Carolina

If you're an unmarried couple in South Carolina and one of you dies without a will, the surviving partner inherits nothing. Not 50%. Not the family home. Nothing. This isn't a theoretical risk — it's the direct consequence of South Carolina's intestacy statute (§ 62-2-102), which distributes assets only to legal spouses, children, parents, and siblings. An unmarried partner is legally invisible.

The best estate planning guide for unmarried couples in South Carolina is one that covers more than just a will. You need beneficiary designations, property titling, powers of attorney, healthcare directives, and — if you own a home together — a strategy for keeping it out of probate given that South Carolina doesn't allow Transfer on Death deeds. A South Carolina-specific estate planning kit covers all of these in one system, with every instruction referencing the statutes that apply to your situation.

The exception: same-sex married couples are legally married and have the same rights as any other married couple under both state and federal law. If you're legally married, the standard estate planning approaches for married couples apply. This guide is specifically for couples who are not legally married — whether by choice, by circumstance, or because they assumed common-law marriage covered them.

Why 2019 Changed Everything

Before July 24, 2019, South Carolina was one of a handful of states that recognized common-law marriage. Couples who lived together, held themselves out as married, and intended to be married could establish marital rights without a ceremony or marriage license.

The South Carolina Supreme Court's decision in Stone v. Thompson (2019) prospectively abolished common-law marriage. Couples who began cohabiting after that date cannot establish a common-law marriage regardless of how long they live together, share finances, or present themselves as married.

This means:

• No default inheritance rights. Your partner cannot inherit from you under intestacy.
• No automatic healthcare decision-making authority. Under the South Carolina Adult Health Care Consent Act, the default hierarchy goes to spouse → adult child → parent → sibling. An unmarried partner isn't on the list.
• No automatic property rights. Even if you've lived together for 20 years and contributed equally to the mortgage, the property goes to whichever name is on the deed — your partner has no legal claim.
• No elective share protection. Married spouses can claim one-third of the probate estate regardless of the will. Unmarried partners have no such backstop.

What Unmarried Couples Need (That Married Couples Get Automatically)

The Five Documents Every Unmarried SC Couple Needs

1. A will naming your partner. This is the minimum. Without it, South Carolina's intestacy statute sends your assets to your parents, siblings, or more distant relatives — not your partner. The will must be signed and witnessed by two people who are NOT beneficiaries (the interested-witness rule under § 62-2-504 could void your partner's gift if a witness is also a beneficiary).

2. Beneficiary designations on every financial account. Your will only controls assets that go through probate. Retirement accounts (401(k), IRA), life insurance, bank accounts with payable-on-death designations, and investment accounts with transfer-on-death designations pass directly to the named beneficiary — bypassing your will entirely. If these still list a parent, ex-spouse, or "estate," update them immediately.

3. Joint tenancy with right of survivorship on shared property. If you own a home together, the deed must include explicit survivorship language. South Carolina does not have TOD deeds for real property, so joint tenancy is the most direct way for the surviving partner to automatically inherit without probate. If only one partner is on the deed, consider adding the other as a joint tenant or using a revocable trust.

4. Healthcare power of attorney. Without this document, your partner has no legal authority to make medical decisions for you. South Carolina's default hierarchy skips unmarried partners entirely. Hospitals may refuse to discuss your condition or treatment options with someone who has no legal standing.

5. Durable financial power of attorney. If you become incapacitated — not dead, just unable to manage your own affairs — your partner has no authority to pay your bills, manage your accounts, or access your financial information. A durable power of attorney gives them that authority under South Carolina's Uniform Power of Attorney Act.

Comparing Your Options

Who This Is For

• Unmarried couples in South Carolina who assumed common-law marriage would protect them — especially those who began cohabiting after July 24, 2019
• Same-sex couples who are not legally married and want the same protections married couples receive automatically
• Long-term partners who co-own a home and need to ensure the surviving partner can keep it without probate
• Couples where one partner has children from a previous relationship — without a will, those children inherit everything and the partner inherits nothing
• Partners who need immediate healthcare and financial decision-making authority for each other

Who This Is NOT For

• Legally married couples (same-sex or otherwise) — you already have default protections; standard married estate planning applies
• Couples where one partner has creditor issues, pending lawsuits, or bankruptcy — adding them to property titles requires professional advice
• Situations where one partner's family actively opposes the relationship and may contest a will — hire an estate planning attorney for ironclad drafting and consider a trust

The Family Conflict Problem

For unmarried couples, the surviving partner's biggest adversary after a death isn't the legal system — it's the deceased partner's family. Under South Carolina intestacy, the deceased partner's parents and siblings are the legal heirs. If they don't approve of the relationship, they have standing to claim the estate and potentially contest any will.

A properly executed will with two disinterested witnesses and a self-proving affidavit is difficult to contest in South Carolina. Adding a revocable living trust for major assets (especially the family home) provides an additional layer of protection, since trust distributions don't go through probate court where family members can more easily intervene.

The South Carolina Basic Estate Planning Kit walks you through building all five documents, coordinating beneficiary designations, and protecting shared property — the complete system an unmarried couple needs, written specifically for South Carolina law.

Frequently Asked Questions

Does South Carolina still recognize common-law marriages established before 2019?

Yes. Couples who can prove they established a common-law marriage before July 24, 2019 retain their marital status and all associated rights. The burden of proof falls on the couple claiming the marriage, and evidence includes joint tax filings, shared last names, joint financial accounts, and testimony from people who knew them as married. Couples who began cohabiting after July 24, 2019 cannot establish a common-law marriage under any circumstances.

Can my unmarried partner make medical decisions for me without a healthcare POA?

Only if no one with higher priority under the South Carolina Adult Health Care Consent Act is available. The default order is: court-appointed guardian → spouse → adult child → parent → adult sibling. Your partner is not on this list. If your parent or sibling is reachable, they will have legal authority over your partner — regardless of your wishes. A healthcare power of attorney overrides this default hierarchy.

What happens to our house if I die and my partner isn't on the deed?

Your share of the property goes through probate and passes to your legal heirs under intestacy — parents, siblings, or more distant relatives. Your partner has no legal claim. Even if they contributed to the mortgage payments, South Carolina does not recognize "equitable" property claims for unmarried partners the way some other states do. The solution is to add your partner as a joint tenant with right of survivorship, or transfer the property into a revocable trust that names your partner as beneficiary.

Will my partner receive my Social Security benefits?

No. Social Security survivor benefits are only available to legal spouses (including divorced spouses who were married for at least 10 years). No amount of documentation, cohabitation, or estate planning can create Social Security survivor benefits for an unmarried partner. This is a federal program that only recognizes legal marriage.

Should we just get legally married instead of doing all this paperwork?

From a pure estate planning perspective, marriage is the most comprehensive single action you can take — it creates automatic inheritance rights, healthcare decision-making authority, property protections, Social Security benefits, and tax advantages. If marriage is an option you're both comfortable with, it simplifies everything. The estate planning kit is designed for couples where marriage isn't the right choice — whether by personal preference, practical considerations, or relationship circumstances.

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