Under Oregon's Uniform Premarital Agreement Act (ORS 108.700-108.740), a valid prenuptial agreement must be in writing, signed by both parties, and include full financial disclosure to be enforceable. Oregon prenups can address property division, spousal support modification, debt allocation, business ownership protection, and retirement account treatment. However, Oregon law explicitly prohibits including child support or custody provisions that adversely affect a child's rights under ORS 108.710(2). The filing fee to initiate a divorce case where a prenup would be enforced is $301 in Oregon circuit courts as of May 2026.
Key Facts: Oregon Prenuptial Agreements
| Requirement | Oregon Law |
|---|---|
| Filing Fee (Divorce) | $287-$301 |
| Residency Requirement | 6 months (if married outside Oregon); none if married in Oregon |
| Waiting Period | None (eliminated in 2011) |
| Property Division Type | Equitable Distribution |
| Governing Statute | ORS 108.700-108.740 |
| Written Requirement | Yes, must be signed by both parties |
| Witness Required | No |
| Financial Disclosure | Required for enforceability |
| Independent Counsel | Recommended but not required |
What to Include in a Prenup in Oregon: The 12 Essential Clauses
Oregon prenuptial agreements should contain 12 essential clauses covering property classification, asset division, debt responsibility, and spousal support terms to ensure enforceability under ORS 108.710. Each clause must be drafted with specificity to withstand judicial scrutiny. Oregon courts favor prenuptial agreements but examine circumstances present when parties executed the agreement, including voluntariness and fairness of terms.
1. Property Classification Clause
The property classification clause distinguishes between separate property (assets owned before marriage) and marital property (assets acquired during marriage) under Oregon's equitable distribution framework. Oregon courts apply ORS 107.105(1)(f), which creates a rebuttable presumption that both parties contributed equally to marital property acquisition. A prenup can override this presumption by clearly designating specific assets as separate property, protecting inheritances, pre-marital real estate, and family heirlooms from division. This clause should list each party's current assets with reasonable estimated values and explicitly state that appreciation on separate property remains separate unless commingled.
2. Real Estate and Home Ownership Provisions
Real estate clauses should specify how pre-marital homes, investment properties, and properties acquired during marriage will be treated upon divorce or death. Oregon prenups can designate a family home purchased before marriage as one spouse's separate property while addressing how mortgage payments made with marital funds affect ownership interests. If one spouse contributes to mortgage payments or improvements on the other's separate property, the agreement should state whether reimbursement is required and at what rate. Oregon timber rights, agricultural land, and vineyard interests represent significant assets in many Oregon marriages and warrant specific treatment in prenuptial agreements.
3. Spousal Support Modification or Waiver
Oregon prenups may modify or eliminate spousal support obligations, but courts retain authority to override these provisions under specific circumstances outlined in ORS 108.725. If enforcing a spousal support waiver would leave one spouse eligible for public assistance or medical assistance programs at the time of separation, Oregon courts may require the other party to provide support sufficient to avoid that eligibility. A well-drafted spousal support clause should acknowledge this limitation while specifying the parties' intent regarding duration, amount, and conditions for support. Many Oregon prenups include tiered spousal support provisions based on marriage length (for example, no support if divorced within 5 years, increasing support for marriages lasting 10, 15, or 20 years).
4. Debt Allocation and Liability Protection
Debt allocation clauses protect each spouse from the other's pre-marital obligations and establish responsibility for debts incurred during marriage. Oregon prenups commonly address pre-marital student loan debt (averaging $28,950 per borrower nationally), credit card balances, business liabilities, and tax obligations. The clause should specify that pre-marital debts remain the sole responsibility of the original debtor and establish how jointly-incurred debts will be divided. For Oregon residents with federal student loans, prenups can prevent a spouse from being required to contribute income toward income-driven repayment calculations after divorce.
5. Business Ownership and Valuation Provisions
Business owners should include specific provisions addressing ownership stakes, appreciation, and management rights in Oregon prenuptial agreements. Under Oregon law, business interests acquired or significantly grown during marriage may be considered marital property subject to equitable distribution. A prenup can classify any future appreciation in business value as separate property, limit the non-owner spouse's liability for business debts, and establish valuation methods for buyout purposes. Oregon courts have held that goodwill may be properly considered when dividing corporate interests, making prenuptial valuation formulas particularly important. Business owners should also consider operating agreement provisions that prohibit ownership transfers to divorced spouses.
6. Retirement Account and Pension Treatment
Retirement assets require careful treatment in Oregon prenuptial agreements because ORS 107.105 explicitly classifies retirement plans and pensions as divisible property. Oregon prenups can designate pre-marital retirement contributions as separate property while addressing how marital contributions will be divided. For 401(k) accounts, IRAs, and employer-sponsored plans, the agreement should specify whether a Qualified Domestic Relations Order (QDRO) will be required for division. Oregon Public Employees Retirement System (PERS) benefits are subject to division in divorce; prenups can establish formulas for calculating the marital portion (typically years of service during marriage divided by total years of service). The QDRO process typically takes 3-6 months and requires plan administrator approval.
7. Life Insurance and Death Benefit Provisions
Oregon prenuptial agreements may address death benefit ownership and disposition from life insurance policies under ORS 108.710(1)(f). The agreement should specify whether existing life insurance policies will be maintained, who pays premiums, and who receives benefits upon death. Couples with children from prior relationships often use prenups to ensure death benefits pass to those children rather than a surviving spouse. Oregon prenups can also require one or both spouses to maintain minimum coverage amounts during the marriage, with the agreement specifying consequences for policy lapses.
8. Estate Planning and Inheritance Provisions
Prenuptial agreements can include provisions for making wills, trusts, or other arrangements to carry out the agreement's terms under ORS 108.710(1)(g). This clause typically addresses whether spouses waive their right to elect against the other's estate (Oregon allows surviving spouses to claim a statutory share regardless of will provisions). The agreement should coordinate with each party's estate planning documents and address how inherited assets will be treated during marriage and upon divorce. For blended families, prenups commonly protect family heirlooms and generational wealth intended for children from prior relationships.
9. Full Financial Disclosure Schedule
Oregon's enforceability standard under ORS 108.725 requires fair and reasonable financial disclosure before execution or written waiver of disclosure rights. The financial disclosure schedule should include: current income and expected changes, all real property with addresses and estimated values, bank and investment accounts with approximate balances, retirement accounts and pensions with current values, business interests with percentage ownership and estimated value, vehicles and personal property over $5,000, debts including mortgages, student loans, credit cards, and tax obligations. Incomplete or false disclosure can invalidate the entire agreement. Oregon courts have voided prenups where one spouse withheld material financial information.
10. Voluntariness and Timing Provisions
Oregon courts examine whether each party executed the agreement voluntarily, meaning with knowledge of terms and without coercion, intimidation, or undue pressure under ORS 108.725(1)(a). The agreement should document that both parties had adequate time to review terms and consult independent counsel. Oregon family law attorneys recommend executing prenuptial agreements at least 30-60 days before the wedding to avoid claims of duress. Last-minute prenups presented days before the ceremony face heightened scrutiny and increased risk of being deemed involuntary. The agreement should include recitals confirming each party's opportunity to consult with independent attorneys.
11. Choice of Law and Severability Clauses
A choice of law clause specifies that Oregon law governs the agreement's interpretation and enforcement, which is particularly important for couples who may relocate during marriage. Oregon permits parties to choose which state's law applies to their prenuptial agreement under ORS 108.710(1)(h). The severability clause ensures that if one provision is deemed unenforceable, remaining provisions survive. This protects the agreement if, for example, a court strikes down a spousal support waiver as unconscionable while enforcing property division terms.
12. Amendment and Revocation Procedures
Under ORS 108.720, prenuptial agreements may be amended or revoked after marriage only by written agreement signed by both parties. No consideration is required for modification. The original agreement should establish procedures for amendments, including requirements for notarization and whether both parties must have independent counsel review changes. Oregon law does not permit oral amendments to written prenuptial agreements, and courts have consistently rejected attempts to modify prenups through conduct alone.
What Cannot Be Included in an Oregon Prenuptial Agreement
Oregon law prohibits prenuptial agreements from including provisions that adversely affect a child's right to support under ORS 108.710(2). Couples cannot predetermine child custody arrangements, parenting time schedules, or child support obligations because Oregon courts decide these matters based on the child's best interests at the time of divorce. Any prenup containing child-related provisions risks being deemed partially or wholly invalid. Oregon prenups also cannot include provisions violating public policy or imposing criminal penalties. Courts have rejected clauses penalizing adultery or requiring specific marital conduct.
Oregon Prenup Comparison: What Can vs. Cannot Be Included
| Can Be Included | Cannot Be Included |
|---|---|
| Property classification (separate vs. marital) | Child custody arrangements |
| Real estate ownership terms | Child support limitations |
| Spousal support modification | Parenting time schedules |
| Debt allocation | Provisions requiring public assistance eligibility |
| Business ownership protection | Criminal penalty clauses |
| Retirement account division | Provisions violating public policy |
| Life insurance beneficiaries | Unconscionable terms |
| Estate planning coordination | Lifestyle clauses (varies by court) |
| Pet ownership | Illegal activity provisions |
| Choice of law | Penalty clauses for divorce |
Requirements for an Enforceable Oregon Prenuptial Agreement
Oregon prenuptial agreements must meet specific requirements under the Uniform Premarital Agreement Act to be enforceable in court. The agreement must be in writing and signed by both parties under ORS 108.705. Oral prenuptial agreements are not enforceable in Oregon. No witness is required, but notarization is recommended to prevent later disputes about signature authenticity.
Voluntary Execution Standard
Both parties must execute the agreement voluntarily, without coercion, intimidation, or undue pressure. Oregon courts apply a subjective-objective test: the party challenging enforceability must prove they did not understand the agreement's terms or were pressured into signing. Courts examine timing (agreements signed days before weddings face scrutiny), relative bargaining power, and whether each party had opportunity to consult counsel. The agreement should include recitals confirming voluntary execution and adequate review time.
Financial Disclosure Requirements
Under ORS 108.725(2)(b), an agreement is unenforceable if the challenging party proves it was unconscionable at execution AND they were not provided fair and reasonable disclosure of the other party's property or financial obligations, did not voluntarily waive disclosure in writing, and did not have adequate knowledge of the other party's finances. Full disclosure includes all assets, debts, income, and financial obligations. Either party may waive disclosure in writing, but this waiver must be voluntary and express.
Independent Legal Counsel
While Oregon does not require each party to have separate attorneys, courts strongly consider whether independent counsel represented each party when evaluating enforceability. One attorney cannot represent both parties due to conflict of interest concerns. Oregon attorneys recommend that each party retain independent counsel from different law firms. Having attorneys sign certifications confirming they advised their clients about the agreement's implications significantly strengthens enforceability.
Unconscionability Analysis
Oregon courts will not enforce unconscionable prenuptial agreements. The unconscionability determination is made as of the agreement's execution date, not the divorce date. Provisions that disproportionately favor one party or leave a spouse destitute may be deemed unconscionable. However, Oregon courts have noted that even a thirty-year marriage might not make a prenup unconscionable if the parties understood and voluntarily accepted its terms at signing.
How Oregon Courts Enforce Prenuptial Agreements
Oregon courts favor prenuptial agreements but subject them to strict scrutiny, examining circumstances present when parties executed the agreement. The challenging party bears the burden of proving the agreement is unenforceable under ORS 108.725. Courts consider whether each party had independent counsel, adequate time to review, and full financial information. Oregon's statute of limitations for challenging prenups is tolled during the marriage, meaning challenges typically arise during divorce proceedings.
Grounds for Challenging Enforceability
A party may prove an Oregon prenuptial agreement unenforceable if: (1) they did not execute voluntarily, OR (2) the agreement was unconscionable when executed AND they lacked adequate financial disclosure, did not waive disclosure, and could not reasonably have known the other party's finances. The challenging party must prove both unconscionability and inadequate disclosure; unconscionability alone without disclosure failures may be insufficient.
Oregon Prenup Attorney Costs and Timeline
Oregon prenuptial agreement attorney fees typically range from $1,500 to $5,000 per party for straightforward agreements and $5,000 to $15,000 or more for complex situations involving business interests, significant assets, or contentious negotiations. The drafting process typically takes 4-8 weeks from initial consultation to signed agreement. Couples should begin prenup discussions at least 3 months before their wedding date to allow adequate time for drafting, review, negotiation, and independent counsel consultation.
Oregon Divorce Context: Why Prenups Matter
Oregon is an equitable distribution state under ORS 107.105(1)(f), meaning courts divide marital property fairly but not necessarily equally. Without a prenup, Oregon courts presume both parties contributed equally to property acquired during marriage. Oregon is also a pure no-fault divorce state under ORS 107.025, where irreconcilable differences serve as the sole grounds for dissolution. Courts cannot consider marital misconduct when dividing property under ORS 107.036, making prenuptial property designations particularly valuable for protecting assets regardless of divorce circumstances.
H2 FAQs: Oregon Prenuptial Agreement Questions
Does Oregon require a prenup to be notarized?
No, Oregon law does not require prenuptial agreements to be notarized under ORS 108.705. The agreement must be in writing and signed by both parties, but no witness or notarization is legally mandated. However, Oregon family law attorneys strongly recommend notarization to prevent later disputes about signature authenticity and to demonstrate the formality of the execution process.
Can a prenup waive spousal support entirely in Oregon?
Yes, Oregon prenuptial agreements can waive spousal support, but courts retain limited override authority under ORS 108.725(3). If enforcing a spousal support waiver would make one spouse eligible for public assistance or medical assistance at separation or divorce, courts may require the other spouse to provide support sufficient to avoid that eligibility. This prevents wealthier spouses from leaving partners destitute.
How long before the wedding should we sign an Oregon prenup?
Oregon prenuptial agreements should be signed at least 30-60 days before the wedding to avoid claims of duress or involuntary execution. Agreements presented days before the ceremony face heightened judicial scrutiny. Oregon family law attorneys recommend beginning prenup discussions 3-4 months before the wedding to allow adequate time for drafting, financial disclosure, independent counsel review, and negotiation.
Can we include pet custody provisions in an Oregon prenup?
Yes, Oregon prenuptial agreements can address pet ownership and custody upon divorce or death. Under ORS 108.710, parties may contract about any matter not violating public policy. Oregon courts increasingly recognize pets as significant family members. The prenup can specify which spouse retains ownership, visitation arrangements, and responsibility for veterinary expenses.
What happens if one spouse doesn't disclose all assets in an Oregon prenup?
Incomplete or fraudulent financial disclosure can invalidate the entire Oregon prenuptial agreement under ORS 108.725(2). If a spouse withheld material financial information, the other spouse can challenge enforceability by proving they lacked adequate knowledge of the other party's finances. Oregon courts have consistently voided prenups where one party hid assets, debts, or income sources.
Does each party need their own attorney for an Oregon prenup?
Oregon law does not require separate attorneys, but having independent counsel for each party significantly strengthens enforceability. One attorney cannot represent both parties due to conflicts of interest, as confirmed in Oregon case law. Courts examine whether each party had opportunity to consult independent counsel when evaluating voluntariness. Attorney certifications confirming each party received independent advice provide valuable evidence of enforceability.
Can an Oregon prenup be modified after marriage?
Yes, under ORS 108.720, Oregon prenuptial agreements may be amended or revoked after marriage by written agreement signed by both parties. No additional consideration is required for amendments. Oral modifications are not enforceable. Postnuptial agreements (created after marriage) can also address issues not covered in the original prenup, though Oregon does not have specific statutes governing postnuptial agreements.
How does Oregon's equitable distribution affect prenup terms?
Oregon uses equitable distribution under ORS 107.105(1)(f), dividing marital property fairly based on circumstances rather than automatically 50/50. Without a prenup, courts presume both spouses contributed equally to marital property. A valid prenup can override this presumption by designating specific assets as separate property or establishing different division formulas, provided terms are not unconscionable.
What makes an Oregon prenup unconscionable?
Under ORS 108.725, unconscionability is evaluated at the time of execution, not divorce. Provisions that severely disadvantage one party, leave a spouse destitute, or result in extreme disparities may be unconscionable. Oregon courts examine whether both parties understood terms, had independent counsel, and entered the agreement with adequate financial information. A prenup giving one spouse 100% of assets after a 30-year marriage while the other receives nothing would likely be unconscionable.
Can we address inheritance rights in an Oregon prenup?
Yes, Oregon prenuptial agreements can address inheritance rights and estate planning matters under ORS 108.710(1)(g). Spouses can waive their right to elect against each other's estates (Oregon's statutory spousal share), coordinate the prenup with existing trusts and wills, and specify treatment of inherited assets. This is particularly important for blended families seeking to preserve family wealth for children from prior relationships.