Prenuptial & Postnuptial Agreements – Protecting Your Assets and Expectations

Planning Ahead for Clarity and Stability

Prenuptial and postnuptial agreements help couples decide in advance how assets, debts, and financial matters will be handled in the event of divorce or death. These agreements are especially valuable for business owners, individuals with significant assets, or families blending in second marriages.


At the Law Offices of Tresa A. Sadler PLLC, we help clients in Mill Creek and across Washington create agreements that minimize uncertainty and prevent costly disputes in the future.

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Drafting Fair and Enforceable Prenups

In Washington, prenuptial agreements must be in writing, signed voluntarily, and based on full financial disclosure. They cannot decide child custody or child support but can determine how property and spousal maintenance are handled.

The best time to draft a prenup is well before the wedding to allow both partners time to review with independent legal counsel. Our firm ensures agreements reflect your goals while holding up under Washington law.


Agreements After Marriage


A postnuptial agreement functions much like a prenup but is signed after marriage. These contracts are often used following a major financial change—such as receiving an inheritance, starting a business, or revising terms from an earlier agreement.



Because enforceability is more closely scrutinized, our attorneys take extra care to ensure fairness and clarity so the agreement stands strong if ever challenged.

When Postnups Make Sense


Couples may choose postnups to protect family wealth, set expectations in blended families, or simply establish peace of mind. Our team provides guidance on tailoring terms to each situation while respecting the sensitivities involved.

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Tailored Contracts for Complex Needs


We work closely with clients to design agreements that cover business ownership, inheritances, retirement accounts, and more. Each contract is carefully drafted to balance financial protection with fairness.

Discretion and Sensitivity in Every Case


Marriage agreements can be delicate. Our firm provides clear advice while keeping the process respectful and constructive for both parties.

  • Are prenups enforceable in Washington?

    Yes. They must be written, signed voluntarily, with full disclosure and fair terms.

  • Can custody or child support be decided in a prenup?

    No. Washington law requires custody and support decisions to be made at the time of divorce, based on the child’s best interests.

  • What’s the difference between a prenup and a postnup?

    Timing. A prenup is signed before marriage, a postnup after. Postnups may be subject to more scrutiny by the court.

Common Questions About Prenuptial and Postnuptial Agreements