Cohabitation & Inheritance in Washington: Protecting Your Partner's Rights
The Hard Truth About Unmarried Partners and Inheritance
Many couples are shocked to learn that after years—even decades—of building a life together, Washington’s intestate succession laws provide no automatic inheritance rights for unmarried partners. When one partner dies without proper planning, the surviving partner could lose:
- The home you shared
- Joint bank accounts
- Family heirlooms
- Retirement benefits
3 Essential Protections Every Unmarried Couple Needs
1. A Valid Will: Your First Line of Defense
A properly executed will is the simplest way to ensure your partner inherits what you intend. In Washington:
- Must be in writing and signed by you (RCW 11.12.020)
- Requires two competent witnesses
- Can be changed anytime while you’re mentally competent.
Real-life example: After 15 years together, Mark assumed he’d inherit his partner’s Seattle condo. Without a will, it went to estranged siblings instead.
2. Cohabitation Agreements: The Unmarried Couple’s Safety Net
These legally binding contracts can address:
✔ Property ownership during the relationship
✔ Inheritance rights after death
✔ Financial responsibilities while living together
Key benefit: Courts generally uphold these agreements if properly drafted, giving unmarried couples similar protections to prenups.
3. Payable-on-Death Designations: The Quick Fix.
For specific assets, you can name your partner as beneficiary:
- Bank accounts (TOD/POD designations)
- Retirement accounts and life insurance
- Vehicles and real estate (through transfer-on-death deeds)
Special Considerations for Blended Families
If you have children from previous relationships:
- Washington law reserves portions of your estate for biological children
- Without a will, children may inherit assets you intended for your partner
- Trusts can help balance these competing interests
The Nightmare Scenario: Dying Without a Plan
Under Washington’s intestate succession laws (RCW 11.04.015), without proper documentation:
- Your children get everything (even adult children you haven’t spoken to in years)
- If no children, your parents inherit
- If no living parents, siblings get your assets
- Your life partner? Nowhere in this list
Remember: Love doesn’t automatically translate to legal protection in Washington. A few hours of planning today can prevent years of heartache and financial hardship for your partner tomorrow. Your shared life deserves proper legal recognition—make it official before it’s too late.