Oregon Prenuptial Agreement

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In re Marriage of Rudder, 230 Or App 437, 217 P.3d 183 (2009)

The court found the prenuptial agreement unenforceable because the wife was pressured to sign it on the day it was presented without her attorney present, had not seen it beforehand, and was not aware of the specific values of the husband's separate properties.

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Matter of Marriage of Purcell, 783 P.2d 1038 (Or. App. 1989)

Pre-UPAA case (agreement executed 1985). Applying Unander v. Unander, the court awarded the wife $750 per month in temporary spousal support for six months because she had no money or savings and was temporarily unable to work due to a hand injury.

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In re Marriage of Bridge, 166 Or App 458, 998 P.2d 780 (2000) 

The court established that prenuptial agreements waiving spousal support are enforceable unless enforcement would deprive a spouse of necessary support that cannot be obtained elsewhere, potentially making them eligible for public assistance.

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In re Marriage of Proctor, 203 Or App 499, 125 P.3d 801 (2005), modified 204 Or App 250, 129 P.3d 186 (2006); supplemental judgment at 2010 WL 2735305

The prenup's protection of each party's separate property was upheld, but the trial court's use of California's formula to credit the husband $453,845 from marital assets was reversed — because a prenup's choice-of-law clause controls how the agreement is read, not which state's divorce rules apply — and the marital assets were sent back for re-division under Oregon law.

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Lind and Lind, 207 Or App 56, 139 P3d 1032 (2006)

The husband presented a prenuptial agreement before marriage but the wife rejected it and he married her anyway, leading the court to infer he understood the home would be marital property and awarding the wife an equal division of his $192,000 investment in the residence plus $500 per month in spousal support, with the husband earning $5,831 per month and the wife earning $2,312 per month.

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1. Are prenups enforceable in Oregon?

Yes — Oregon is one of the strongest states for prenup enforcement. Oregon adopted the Uniform Premarital Agreement Act in 1987 (ORS 108.700–108.740) and reviews unconscionability only at signing, not at divorce. That means a court cannot second-guess your agreement years later based on changed circumstances. The challenger must prove either involuntary execution or unconscionability plus failure of all three disclosure sub-elements — a high bar. A prenuptial agreement executed with full disclosure, adequate review time, and independent counsel is very difficult to break.

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2. How much does a prenup cost in Oregon?

Attorney-drafted from scratch: $1,500–$5,000+ per side. A more cost-effective approach: start with a free Oregon-specific template, draft changes with an AI tool like Claude, then hire an attorney only to review and assist with signing — typically $500–$1,000 per side. Oregon law requires only a writing signed by both parties (ORS 108.705), so the legal work is reviewing and executing the agreement, not generating boilerplate from scratch.

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3. Is Oregon a 50/50 divorce state?

No. Oregon is an equitable distribution state, not a community property or automatic 50/50 state. Under ORS 107.105(1)(f), courts divide property based on what is "just and proper in all the circumstances," with a rebuttable presumption that both spouses contributed equally to assets acquired during the marriage. In practice, many divisions end up near 50/50, but judges have wide discretion — and that unpredictability is exactly why a prenup matters. A valid prenuptial agreement overrides the default standard entirely, letting both parties define in advance which assets stay separate and how joint property is handled.

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4. What makes a prenup invalid in Oregon?

Under ORS 108.725, only two grounds exist. First, involuntary execution — Rudder (2009) defines this as requiring actual knowledge of the terms and property affected, not just a signature. Coercion, surprise presentation, and lack of access to counsel all factor in. Second, unconscionability at signing AND the challenger must prove all three of: no fair disclosure, no written waiver of disclosure, and no adequate knowledge of the other party's finances. All elements must be proven together — failing on any one means the agreement stands. Including child custody or support clauses can also undermine the rest of the agreement, because Oregon courts will not enforce them.

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5. Can you waive alimony in a prenup in Oregon?

Yes, with one narrow exception. ORS 108.710(1)(d) expressly permits modification or elimination of spousal support. However, under ORS 108.725(2), a court may override that waiver if enforcement would make one party eligible for public assistance or medical assistance at the time of separation or divorce — but only to the extent necessary to avoid that eligibility. Bridge (2000) confirmed that support waivers are otherwise enforceable unless a spouse is left with no reasonable source of support. This is a safety-net floor, not a general invitation to revisit support terms.

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6. Do I need a lawyer for a prenup in Oregon?

Not legally — Oregon does not require independent counsel for a valid prenup. But practically, separate attorneys for both parties are the strongest protection against an involuntary execution challenge. In Rudder (2009), the court found the agreement unenforceable partly because the wife was told to sign at the husband's attorney's office without her own lawyer present. Oregon courts closely scrutinize whether each party had a genuine opportunity for independent legal review. Use a template to cut drafting costs, but do not skip the attorney.

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7. How far in advance should I get a prenup in Oregon?

Oregon has no statutory minimum, but sign at least 60 days before the wedding and give your spouse at least two weeks to review the final version with their own attorney. Rudder (2009) voided a prenup presented to the wife the day before she was scheduled to fly to Las Vegas for the wedding — the court held that "voluntarily" requires actual knowledge of the terms and what they affect, which requires time. Contact an attorney 4–6 months before the wedding with your draft. Best practice: sign before proposing, when there is zero time pressure.

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8. Can a prenup be thrown out in Oregon?

It can, but the burden is on the challenger — and Oregon's standard is high. The challenger must prove either (1) involuntary execution, meaning coercion, pressure, or lack of meaningful knowledge of the terms, or (2) that the agreement was unconscionable at signing and all three disclosure failures occurred simultaneously. Oregon reviews unconscionability only at the time of signing, not at divorce, which eliminates the most common attack in other states: arguing that changed circumstances during the marriage made the agreement unfair. That single-review standard is a major reason Oregon prenups are among the most durable in the country.

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9. What happens if you divorce without a prenup in Oregon?

Without a prenup, Oregon courts apply ORS 107.105(1)(f) and divide all property — including separate property — under a "just and proper" standard with wide judicial discretion. Courts presume both spouses contributed equally to assets acquired during the marriage, but a judge can distribute any asset of either spouse, including property owned before the marriage, if the judge finds it fair. Spousal support is determined by factors like marriage duration, income disparity, health, and standard of living — with no preset formula. The result is uncertainty: two similar cases can produce very different outcomes depending on the judge. A prenup replaces that discretion with agreed terms.

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10. Does Oregon recognize postnuptial agreements?

Oregon does not have a specific statute governing postnuptial agreements — the UPAA (ORS 108.700–108.740) covers only premarital agreements. However, ORS 108.720 allows a prenup to be amended or revoked after marriage by a written agreement signed by both parties, without additional consideration. Courts generally analyze postnuptial agreements under contract law principles, applying heightened scrutiny because of the fiduciary relationship between spouses. If you missed the window for a prenup, a postnuptial agreement is viable but faces a harder enforceability path than a prenup would have.

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11. Can a prenup protect my business in Oregon?

Yes — this is one of the most common and effective uses of a prenuptial agreement. Without a prenup, appreciation in a business's value during the marriage is a marital asset subject to division under ORS 107.105(1)(f), even if you owned the business before the wedding. A prenup can designate the business and its growth as separate property, define how (or whether) the non-owner spouse is compensated for contributions, and prevent forced sales or valuations during divorce. Oregon's equitable distribution standard gives judges broad discretion over business assets — a prenup removes that discretion.

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12. Can a prenup protect an inheritance in Oregon?

Yes. Inheritances received during marriage are generally treated as separate property under Oregon law, but they can lose that status if commingled with marital assets — for example, depositing inherited funds into a joint account or using them for shared expenses. Under Kunze (2004), Oregon courts look at whether a spouse demonstrated intent to keep the asset separate or integrated it into the joint finances. A prenup can remove that ambiguity entirely by designating inheritances — past and future — as separate property regardless of how they are held or used during the marriage.

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13. Can you change a prenup after getting married in Oregon?

Yes. Under ORS 108.720, a prenuptial agreement can be amended or revoked after marriage by a written agreement signed by both parties. No additional consideration (i.e., no exchange of value) is required for the amendment to be enforceable. Oral modifications are not valid. If circumstances change — a new business, children, a significant inheritance — couples can update their agreement in writing at any time during the marriage. Each party should have independent counsel review any amendment, just as with the original agreement.