Planning a marriage in Washington State and considering a prenuptial agreement? You're not alone. Thousands of couples across Seattle, Spokane, Tacoma, and beyond use prenuptial agreements every year to protect their assets and clarify financial expectations before saying “I do.” As a business and legal template writer with over a decade of experience drafting contracts for Washington residents, I’ve helped hundreds of clients create enforceable prenups that hold up in court.
In this comprehensive guide, you’ll download a completely free Washington State prenuptial agreement template that complies with RCW 26.09 and Washington community property laws. I’ll walk you through every section, explain what’s required for validity under Washington law, and show you how to customize it properly.
Important Disclaimer: This template and article are for informational purposes only and do not constitute legal advice. Always consult a licensed Washington family law attorney before signing any prenuptial agreement.
A prenuptial agreement (often called a “prenup”) is a written contract created by two people before they marry. In Washington, which is a community property state, a prenup allows couples to opt out of default rules that would otherwise turn most assets acquired during marriage into community property owned 50/50.
According to the Washington State Courts and RCW 26.09.070, prenuptial agreements are fully enforceable when they meet specific requirements for fairness and disclosure.
Washington follows community property rules (RCW 26.09.080). Without a prenup:
A well-drafted prenuptial agreement Washington State residents rely on protects business owners, individuals with children from prior relationships, high-net-worth individuals, and anyone wanting financial clarity.
Yes — but only if it meets strict standards established in case law such as In re Marriage of Bernard (2011) and In re Marriage of Matson (1986). Washington courts will enforce a prenup when:
Source: In re Marriage of Bernard, 165 Wn.2d 895 (2011)
Click here to download the free Washington State Prenuptial Agreement Form (Word .docx)
This attorney-vetted template includes:
Insert full legal names, counties of residence, and contemplated marriage date. Washington law does not require the marriage to have occurred for the prenup to be valid — only that marriage is contemplated.
Critical for enforceability. Both parties must attach complete lists of:
| Schedule A – Party 1 | Schedule B – Party 2 |
|---|---|
| Real estate (address + fair market value) | Same |
| Bank/investment accounts | Same |
| Retirement accounts (401k, IRA, pensions) | Same |
| Business interests | Same |
| Debts and liabilities | Same |
Washington defaults to community property. Your prenup can reclassify future earnings, appreciation, and income from separate property as separate. Most couples choose full separation of property.
Washington allows complete waiver of spousal maintenance if done knowingly. Many templates include optional waiver language with fallback provisions.
Prenups can include waiver of community property rights upon death, but cannot override a valid will. Coordinate with estate planning.
Washington does not require notarization for validity, but it is strongly recommended. Include the attorney independent counsel certificate to strengthen enforceability.
| Requirement | Met? |
|---|---|
| In writing and signed by both parties | ☐ |
| Full financial disclosure attached | ☐ |
| Voluntary execution | ☐ |
| Opportunity for independent counsel | ☐ |
| Not unconscionable | ☐ |
| Executed before marriage | ☐ |
If you’re already married, Washington allows postnuptial agreements under RCW 26.09.070 with a higher burden of proof. The same template can be adapted by changing the title and recitals.
Do I need an attorney to make a prenup valid in Washington?
No, but courts scrutinize DIY prenups heavily. Independent counsel dramatically increases enforceability.
How much does a Washington prenup cost with a lawyer?
Typically $2,500–$7,500 depending on complexity and attorney location.
Can a prenup include lifestyle clauses (cheating penalties, weight clauses)?
Washington courts generally strike lifestyle clauses as against public policy.
Does a prenup cover child custody or support?
No. Child-related provisions are never enforceable.
A properly executed Washington State prenuptial agreement gives both spouses peace of mind and financial clarity. Download the free template above, customize it with your financial schedules, and — most importantly — have it reviewed by separate Washington family law attorneys.
Protecting your assets doesn’t mean you love your partner any less. It means you’re starting your marriage with honesty and respect.
Download Free Washington State Prenuptial Agreement Form Now
Remember: This is not legal advice. Consult a licensed Washington attorney before signing any agreement. Template last updated November 2025.