Frequently Asked Questions: Adultery and Divorce in Washington

Q: Does adultery affect divorce in Washington?
A: Washington is a pure no-fault state. Adultery cannot be alleged as grounds for divorce and courts are explicitly prohibited from considering it in property or support decisions. The primary financial remedy for affair-related spending is a dissipation claim in property division.

Q: Can I file for divorce because of adultery in Washington?
A: No. Washington does not recognize fault-based divorce grounds. You must file on no-fault grounds — irretrievable breakdown. The affair itself does not change the grounds available to you.

Q: Does cheating affect property division in Washington?
A: No. Washington courts divide community property equally without considering fault. However, if marital funds were spent on the affair — hotels, gifts, travel, expenses for a paramour — those amounts may be addressed as dissipation of marital assets and credited back to the innocent spouse in the property division.

Q: Does adultery affect alimony in Washington?
A: No. Washington courts do not consider marital fault in spousal support determinations. Support is based on financial need, ability to pay, and the length of the marriage.

Q: Does adultery affect child custody in Washington?
A: Generally no. Washington custody decisions are based on the best interest of the child, not parental fault. A parent's adultery standing alone is not a factor in Washington custody determinations. It may become relevant if the parent's new partner poses documented risks to the children, or if the parent's conduct during the affair directly harmed the children's welfare.

Q: How do I prove adultery in Washington?
A: Because adultery is not a fault ground in Washington, proving it in the traditional legal sense is not typically required. For a dissipation claim — the primary financial remedy — you need documented proof that marital funds were spent on the affair, not necessarily proof of the affair itself. Financial records are the most useful evidence.

Q: What if my spouse spent our money on the affair?
A: If marital (community) funds were spent on the affair — hotels, gifts, travel, an apartment or rent for a paramour, expensive dinners — those expenditures can be raised as dissipation of marital community assets in your Washington divorce. Courts can credit the innocent spouse for those amounts in the property division. Documenting dissipation requires financial records: credit card statements, bank records, and receipts. Consult a Washington family law attorney about how to quantify and present a dissipation claim effectively.

Q: Should I hire a private investigator to prove the affair?
A: In Washington, adultery has no formal legal impact on property or support outcomes, so paying for a private investigator to document the affair is unlikely to produce a financial return in your divorce. If your goal is documenting affair-related spending for a dissipation claim, financial records are more useful and less expensive than surveillance.