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Washington · Prenuptial Agreement

Prenuptial Agreement Washington: Your Complete Guide

Planning a wedding is exciting, but it's also a time to think practically about your future together. A prenuptial agreement (or 'prenup') might not be the most romantic topic, but it's a smart, caring way to protect both of you. In Washington, prenups are legally recognized and can save you stress and conflict later. This guide walks you through everything you need to know about creating a valid prenup in the Evergreen State.

Prenup Agreement Hub · Washington
Last updated August 08, 2026

How it works

1

Pick your state

Choose prenuptial agreement for your state — every state has different rules.

2

Complete it online

Fill out the guided, state-specific form in about 15 minutes.

3

Download & sign

Get an instant download, then print or e-sign it. Done.

Ready to protect your future? Contact a Washington prenup lawyer today to ensure your agreement is solid and legally sound. You can prenuptial agreement with a state-specific template here.

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What Prenuptial Agreement needs to be valid in Washington

  • Both parties must voluntarily sign the agreement in writing.
  • The agreement must be signed before marriage (or as a postnuptial agreement after marriage).
  • Full and fair disclosure of each spouse's assets, debts, and income is required.
  • The agreement must be notarized to be considered presumptively valid.
  • Both parties should have the opportunity to consult with independent legal counsel.
  • Signing under duress, coercion, or with unconscionable terms can invalidate the agreement.

How to set up a Prenuptial Agreement in Washington

  1. Make a list of all your assets, debts, and income. Be thorough and honest.
  2. Discuss your goals with your partner: what do you want the prenup to cover? (e.g., separate property, alimony, inheritance)
  3. Draft the agreement. You can use a reputable prenup template designed for Washington, but consider having a prenup lawyer review it.
  4. Both of you must sign the document in the presence of a notary public.
  5. Keep a copy in a safe place, and consider storing a copy with your attorney or in a safety deposit box.

How much it costs

The cost of a prenuptial agreement in Washington varies widely. If you use an online template, it can cost as little as $100–$200. However, hiring a prenup lawyer for drafting and review can range from $1,500 to $5,000 or more, depending on complexity and attorney fees. This investment is often worth the peace of mind and legal protection it provides.

Washington Prenup Prep Checklist

Before drafting a prenuptial agreement in Washington, gather these essentials and understand key state rules to avoid common pitfalls.

  • Disclose all assets, debts, and income in writing to your future spouse—omissions can invalidate the agreement.
  • Each party must have independent legal representation or explicitly waive the right in writing to avoid later challenges.
  • Washington is a community property state, so clearly define what remains separate property versus community property.
  • Sign the agreement well before the wedding; signing too close to the date may raise duress claims.
  • Notarization is recommended, though not required, for validity—check with your attorney for added enforceability.
  • Have full legal names, addresses, and current financial statements ready for each party.

DIY vs. hiring a lawyer for your Prenuptial Agreement

OptionCostTimeBest for
DIY with a template~$40MinutesStandard situations
State-specific template (recommended)Low, one-time~15 minMost people
Hire an attorney$200–$1,500+Days–weeksComplex cases

Most people complete their prenuptial agreement online in about 15 minutes with a state-specific template — the same structure attorneys use, without the hourly bill.

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Questions people ask

Do I need a lawyer to create a prenup in Washington?

No, but it's strongly recommended. Having a lawyer draft or review the agreement ensures it meets Washington's legal requirements and reduces the chance of it being challenged later. Both parties should ideally have separate attorneys.

Can a prenup cover child support?

No. In Washington, prenuptial agreements cannot waive child support. Courts prioritize the child's best interests, and child support obligations are determined at the time of divorce, not by a prenup.

Is a notarized prenup valid in Washington?

Washington law states that a prenuptial agreement must be in writing and signed by both parties. While notarization isn't strictly required, a notarized agreement is presumed valid and more likely to be upheld in court.

Can we use a prenup template from the internet?

Yes, you can use a prenup template as a starting point, but make sure it's tailored to Washington law. Templates may not cover all nuances, so having a Washington prenup lawyer review it is crucial.

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