Pennsylvania Prenuptial Agreement
Pennsylvania prenuptial agreements are governed by 23 Pa.C.S.A. § 3106. A prenup fails only if execution was involuntary, or if all three conditions exist: no fair and reasonable disclosure, no written waiver of disclosure, and no adequate knowledge of the other's finances. All three must be proven together. The alimony floor is public assistance eligibility — complete support waivers are enforceable above that threshold.
Bottom line: Pennsylvania earns an A grade. Single review, a strict three-part conjunctive challenge standard, a pure contract-law approach, and a concrete alimony floor make Pennsylvania one of the most reliably enforcing states in the country.
How Pennsylvania's Prenup Laws Rank: A
Pennsylvania Prenup Laws: Key Statutes Explained
Pennsylvania Statutes Title 23 Pa.C.S.A. Domestic Relations § 3106. Premarital agreements
Separate Property
All assets can remain separate property, avoiding costly divorce settlements. Joint assets and debts titled in both names are split 50/50 as marital property.
Unconscionability at Execution Only
Courts assess voluntariness and disclosure adequacy at signing, not at enforcement. Changed circumstances during marriage will not invalidate a valid prenup.
Unconscionability Standard
A prenup is invalid only if execution was not voluntary OR all three factors exist: (1) no fair and reasonable disclosure AND (2) no written waiver of disclosure AND (3) challenging party lacked adequate knowledge of other's finances. Even highly one-sided agreements are upheld.
Spousal Support Minimum
Complete waivers of spousal support are enforceable under Simeone and § 3106. No reported Pennsylvania case has applied a public-assistance floor to invalidate a prenuptial spousal support waiver. Courts may still review alimony waivers under general unconscionability principles at common law, but no specific threshold has been established.
Timing
No statutory deadline exists, but recent Superior Court cases (Lewis v. Lewis, 2020; Orsini v. Orsini, 2023) suggest insufficient time to obtain counsel may constitute duress. Sign 60+ days before the wedding with 2-3 weeks review time to reduce challenge risk. Reach out to an attorney 4-6 months before the wedding.
Independent Counsel
Not required if waived in writing. However, independent counsel dramatically strengthens enforceability if challenged. Lack of opportunity to obtain counsel supports duress claims that could invalidate prenup.
Financial Disclosure
"Fair and reasonable disclosure" of assets, debts, and income, or can be waived in writing (both included).
High Burden to Challenge
Only two defenses allowed: involuntary execution, or inadequate disclosure without written waiver and lacking knowledge. Challenging party bears burden of proof. Fraud, duress, and coercion must be proven—allegations alone insufficient.
Child Support
Child support and custody clauses are unenforceable and could undermine the entire agreement. Do not include.
Pennsylvania's Unique Approach
Pennsylvania treats prenups largely as business contracts between equal parties and is nationally known for upholding agreements that might not hold up in other states.
Pennsylvania Prenuptial Agreement Court Cases
Lewis v. Lewis, 234 A.3d 706 (Pa. Super. 2020)
A post-nuptial settlement agreement was invalidated where the wife claimed she signed under duress while fearful of her husband's retribution and without opportunity to consult an attorney, establishing opportunity to seek counsel is critical for voluntary execution and prenup enforceability.
Simeone v. Simeone, 525 Pa. 392, 581 A.2d 162 (Pa. 1990)
The Pennsylvania Supreme Court upheld a prenuptial agreement that limited a 23-year-old unemployed nurse to $200 per week (maximum $25,000 total) from her neurosurgeon husband earning $90,000 annually with $300,000 in assets, establishing that prenuptial agreements are ordinary contracts enforceable under traditional contract principles without requiring independent counsel or judicial review of fairness, absent fraud, misrepresentation, or duress.
Lugg v. Lugg, 64 A.3d 1109 (Pa. Super. 2013)
A post-nuptial agreement was enforced despite the wife's claims of lack of asset disclosure, duress from daily pressure and one-and-a-half hours of negotiation pressure on the signing day, and unconscionability, reaffirming that parties can waive economic disclosure in writing and that post-nuptial agreements are evaluated under the same contract principles as prenuptial agreements following Simeone.
5-Step Checklist: How to Sign & Execute a Prenup in Pennsylvania
Step 1: Download and read the Pennsylvania prenuptial agreement
Start with our free template. It is written for Pennsylvania-specific statutes and case law under 23 Pa.C.S.A. § 3106 and Simeone v. Simeone, 525 Pa. 392 (1990). Read it in full — know what you are getting into legally with marriage. The 15+ pages is written thoroughly to include rebuttals to common legal challenges and fallback provisions. Pennsylvania is nationally known for treating prenups as ordinary business contracts and upholding agreements that would not survive in many other states — but a line of recent Superior Court decisions (Lewis, Orsini) signals that ambushing a party with a last-minute agreement and no opportunity for counsel can still constitute duress.
Step 2: Draft changes on your own
See a clause you don't like? Copy it into an AI like Claude, explain what you'd like to change or what you want the clause "to do." Save any changes as a separate alternate version — don't overwrite the original. Bring both versions to your attorney review. Note: AI is often gender-biased and crafts terms beyond what is legally required. Push back on its output.
Step 3: Find a lawyer in your state
Find a matrimonial or divorce attorney in your state. Avvo, Findlaw, and Justia are good. Look for someone with 10+ years experience. Call or email and ask them how much to review your draft prenup and help with signing. Send them your draft.
Step 4: Meet your lawyer 4–6 months before the wedding
Our recommendation: sign the prenup before proposing. That way, you both get the legal work out of the way, and you know this is the right person to marry. Already proposed? 4–6 months before the wedding should leave you enough time to give your spouse 1–2 weeks to review the final draft and have it signed 60+ days before the wedding. Pennsylvania has no statutory minimum, and Simeone upheld a prenup signed the day before the wedding. That said, the post-Simeone trend in Lewis (2020) and Orsini (2023) treats surprise last-minute presentation — without any prior notice or opportunity to seek counsel — as potential duress. Adequate lead time eliminates this risk entirely.
Step 5: Sign with your attorneys and store the agreement
Execute the agreement with both attorneys present — attorneys are notaries, so their acknowledgment adds authentication and provides the clearest evidence of voluntariness if challenged. No attorneys present? Use a standalone notary at minimum. Each party keeps a signed original, and so should each party's attorney. Store yours somewhere secure like a safety deposit box. Create a .pdf and save it via a backup drive and email.
Pennsylvania Prenuptial Agreement: Frequently Asked Questions (2026)
1. Are prenups enforceable in Pennsylvania?
Yes — Pennsylvania is one of the most prenup-friendly states in the country. Courts treat prenuptial agreements as ordinary contracts under 23 Pa.C.S. § 3106 and the landmark decision in Simeone v. Simeone, 525 Pa. 392 (1990). There is no judicial fairness review and no "second look" at the time of divorce. The agreement is evaluated based on conditions at signing only. To invalidate a prenup, the challenging party must meet the clear and convincing evidence standard — the highest burden in civil law. Pennsylvania has upheld deeply one-sided agreements, agreements signed the day before the wedding, and agreements where one or both parties had no independent counsel. Only two narrow grounds exist to void an agreement: involuntary execution, or failure of all three disclosure prongs simultaneously. This makes Pennsylvania one of the hardest states in which to overturn a prenup.
2. How much does a prenup cost in Pennsylvania?
Attorney-drafted from scratch: $1,500–$5,000+ per side, depending on asset complexity and law firm. Attorney review of an existing draft: roughly $500–$800 per side. A cost-effective approach: start with a Pennsylvania-specific template built around § 3106 and Simeone, customize it with an AI drafting tool, then hire a matrimonial attorney only to review the final draft and assist with signing. That workflow typically brings the total bill to around $500 per side. Both parties should have separate attorneys to maximize enforceability and eliminate duress arguments.
3. What makes a prenuptial agreement invalid in Pennsylvania?
Under 23 Pa.C.S. § 3106, only two grounds can void a prenup. First, the challenging party proves by clear and convincing evidence that execution was not voluntary — meaning fraud, duress, or coercion. Second, the challenging party proves all three of the following simultaneously: (1) no fair and reasonable disclosure of the other party's finances, AND (2) no written waiver of the right to that disclosure, AND (3) no adequate knowledge of the other party's financial situation. All three must be proven together — if even one fails, the agreement stands. Additionally, including child custody or child support provisions can jeopardize the entire agreement, because Pennsylvania courts refuse to enforce them and their presence may taint the rest of the contract.
4. Do I need a lawyer for a prenup in Pennsylvania?
No. Simeone v. Simeone explicitly rejected any requirement for independent counsel, calling it "paternalistic." Pennsylvania courts regularly enforce prenups where one or both parties were unrepresented. That said, having separate attorneys for each party is the single strongest defense against a duress challenge. The post-2020 case law in Lewis v. Lewis (2020) and Orsini v. Orsini (2023) treats last-minute presentation of a prenup with no opportunity for the other party to consult counsel as potential duress — even under Pennsylvania's demanding standard. Independent counsel on both sides eliminates that risk entirely. Use a template to cut drafting costs, but don't skip the attorney review.
5. Can you waive alimony in a prenup in Pennsylvania?
Yes. Pennsylvania allows complete waivers of spousal support and alimony in a prenuptial agreement. Simeone upheld a prenup that limited a spouse to $200 per week (capped at $25,000 total) from a neurosurgeon husband — and that agreement was signed the day before the wedding without independent counsel. Section 3106 does not include the Uniform Premarital Agreement Act's public-assistance eligibility override (UPAA § 6(b)), meaning Pennsylvania's statute provides no express floor below which an alimony waiver becomes unenforceable. That said, structuring spousal support to reward longer marriages and larger families — rather than eliminating it entirely — is a practical strategy that reduces challenge risk and aligns incentives for both parties.
6. How far in advance should I get a prenup in Pennsylvania?
Sign 60+ days before the wedding. Give your spouse at least two weeks to review the final draft with their own attorney. Pennsylvania has no statutory minimum — Simeone enforced a prenup signed the evening before the wedding. But the post-2020 decisions in Lewis (2020) and Orsini (2023) changed the practical calculus: presenting a prenup for the first time on the eve of the wedding, with no prior discussion and no opportunity for the other party to seek counsel, can now support a duress finding. Prior notice, adequate review time, and access to independent counsel eliminate that risk cleanly. Best practice: contact an attorney 4–6 months before the wedding, or sign before proposing — no time pressure, no duress argument.
7. Is Pennsylvania a community property state?
No. Pennsylvania is an equitable distribution state under 23 Pa.C.S. § 3502. In a divorce without a prenup, courts divide marital property based on what the judge deems fair after weighing 13 statutory factors — including the length of the marriage, each spouse's income and earning capacity, contributions as homemaker, and custodial responsibilities. "Equitable" does not mean "equal": splits can range from 50/50 to 80/20 depending on the circumstances. A prenuptial agreement replaces this entire judicial framework with terms both parties agreed to in advance, giving you control over the outcome rather than leaving it to a judge's discretion.
8. What happens if you get married without a prenup in Pennsylvania?
Pennsylvania's Divorce Code controls. Under equitable distribution (§ 3502), a judge divides all marital property — anything acquired by either spouse during the marriage, regardless of whose name is on the title — based on 13 statutory factors. That includes income, retirement accounts, real estate, business interests, and even the increase in value of premarital assets during the marriage. The judge also determines alimony under 23 Pa.C.S. § 3701 based on 17 separate factors. A prenup replaces both of these discretionary frameworks with pre-agreed terms. Without one, you are handing every financial outcome of your divorce to a judge who does not know you.
9. What is Simeone v. Simeone and why does it matter?
Simeone v. Simeone, 525 Pa. 392, 581 A.2d 162 (Pa. 1990) is the foundation of Pennsylvania prenup law. The Pennsylvania Supreme Court upheld a prenup limiting a 23-year-old unemployed nurse to $200/week in support (capped at $25,000) from her neurosurgeon husband earning $90,000 annually — signed the evening before their wedding without independent counsel. The court held that prenups are ordinary contracts governed by traditional contract principles, requiring no judicial review of fairness, no mandatory independent counsel, and no heightened scrutiny. It specifically rejected older doctrines that treated spouses — particularly women — as needing special contractual protection, citing Pennsylvania's Equal Rights Amendment. Simeone's principles are now codified in § 3106 and make Pennsylvania one of the strongest states in the country for prenup enforcement.
10. Can a prenup protect my business in Pennsylvania?
Yes, and Pennsylvania's framework is especially favorable for business owners. A prenup can classify a business — and all future appreciation in its value — as the separate property of the owning spouse. Without a prenup, any increase in the value of a premarital business during the marriage is marital property subject to equitable distribution, even if the non-owning spouse never contributed to the business. This means a judge could award your spouse a percentage of the growth you built. A prenup locks in the classification at signing, and because Pennsylvania reviews validity only at execution — not at divorce — changed circumstances during the marriage (like the business tripling in value) will not reopen the agreement.
11. Can a prenup be challenged after marriage in Pennsylvania?
Yes, but the burden is steep. Under § 3106, the challenging party — not the party seeking enforcement — bears the burden of proof. They must meet the clear and convincing evidence standard, which is the highest standard in civil law (above the typical preponderance standard used in most contract disputes). The only two grounds are involuntary execution (duress, fraud, coercion) or failure of all three disclosure prongs simultaneously. Mere regret, changed financial circumstances, or the agreement being one-sided are not grounds for invalidation. Pennsylvania courts have explicitly held that even a dramatically lopsided agreement is enforceable if it was voluntarily signed with adequate disclosure or a written waiver of disclosure.
12. What is the difference between a prenup and a postnup in Pennsylvania?
A prenuptial agreement is signed before marriage; a postnuptial agreement is signed after. Under Lugg v. Lugg, 64 A.3d 1109 (Pa. Super. 2013), Pennsylvania evaluates postnuptial agreements under the same contract principles as prenups following Simeone. The same two-ground challenge framework applies: involuntary execution, or failure of all three disclosure prongs. Parties can waive financial disclosure in writing in a postnup, just as in a prenup. The practical difference is that postnups may face additional scrutiny because of the heightened fiduciary duties between spouses that exist during marriage — a dynamic that does not apply to unmarried parties negotiating a prenup. If you missed the window for a prenup, a postnup is a viable alternative under Pennsylvania law.
13. Can a prenup address child custody or child support in Pennsylvania?
No. Child support and custody provisions are unenforceable in a Pennsylvania prenuptial agreement and should not be included. Pennsylvania courts determine child support using statewide guidelines under 23 Pa.C.S. § 4322 and resolve custody based on the best interests of the child at the time of the proceeding — not years earlier in a prenup. More importantly, including child-related provisions can undermine the enforceability of the entire agreement by signaling overreach or creating a basis for a court to question whether the agreement was made in good faith. Leave child custody and support out entirely.
14. Should I get a prenup for a second marriage in Pennsylvania?
A prenup is especially important for second marriages. You are likely entering the marriage with more assets, existing retirement accounts, real estate, a business, or children from a prior relationship. Without a prenup, any increase in value of those premarital assets during the marriage becomes marital property under Pennsylvania's equitable distribution framework. A prenup lets you protect inheritances for children from your first marriage, keep premarital retirement accounts separate, shield a business from division, and define spousal support terms that reflect your specific circumstances. Pennsylvania's contract-law approach under Simeone means these terms will be enforced as written — there is no judicial second-guessing at the time of divorce.