A prenuptial agreement looks like a formal contract, usually ten to several dozen pages long, built from numbered paragraphs and finished with signature blocks and financial exhibits at the back. Open one up and you’ll see a titled first page, a short block introducing the two people getting married, a run of recitals explaining why they’re signing, then the operative clauses dividing property, debt, and support if the marriage ends. The back of the document carries each person’s financial disclosures as labeled schedules. The structure is fairly standard from one agreement to the next, because about 28 states and the District of Columbia have adopted some version of the Uniform Premarital Agreement Act, which sets a shared framework for what these contracts contain and how they’re enforced.
The First Page
The document opens with a centered, bolded title — typically “Prenuptial Agreement” or “Antenuptial Agreement.” Both terms mean the same thing: a contract made before marriage that governs each person’s financial rights.
Directly below the title is a short preamble naming both parties by their full legal names. They’re often labeled “First Party” and “Second Party” or “Party A” and “Party B” so the rest of the document can refer back to them cleanly. The preamble also records the date the agreement is being entered into and states that the couple intends to marry.
After that comes a block of introductory paragraphs called recitals. These explain the background of the relationship and the purpose of the agreement, and they usually confirm three things: that both parties are signing voluntarily, that each has had the opportunity to review the other’s financial information, and that both understand the legal effect of signing. Recitals aren’t the operative terms, but if the agreement is ever challenged, they help show that neither person was pressured or misled.
Financial Disclosure Schedules at the Back
Flip to the end of the document, before the signatures, and you’ll find the bulkiest exhibits: the financial disclosure schedules. These are typically labeled “Schedule A” for one party and “Schedule B” for the other, and together they function as a balance sheet for each person at the moment of signing.
Each schedule generally lists:
- Bank and investment accounts — checking, savings, brokerage, and retirement, identified by institution and approximate balance
- Real estate, with estimated value and outstanding mortgage balance
- Business interests, including ownership stakes in companies, partnerships, or LLCs
- Personal property such as vehicles, jewelry, and collectibles
- Debts, including student loans, credit cards, car loans, and tax obligations
- Income, covering salary, bonuses, and any other regular earnings
Many attorneys also attach recent federal tax returns behind the schedules. Tax returns support the figures listed and can surface details — rental income, capital gains — that a party might otherwise overlook.
These schedules carry more weight than their position at the back suggests. Full financial disclosure is the single most important factor in keeping a prenup enforceable. Under the framework used by most states that follow the Uniform Premarital Agreement Act, a prenup can be thrown out if the person challenging it was not given a fair and reasonable description of the other party’s property and financial obligations, did not waive the right to that information in writing, and could not reasonably have known about the other party’s finances independently. Hiding assets or significantly understating their value is one of the most common reasons courts invalidate these agreements.
Property Clauses
The heart of the document is the stretch of numbered paragraphs that classifies assets as separate property or marital property. This is where the agreement actually does its work.
Separate Property
Separate property clauses identify assets that will stay the sole property of one spouse no matter how long the marriage lasts. These clauses typically name:
- Premarital assets — anything owned before the wedding, such as a home, savings, or investments
- Inheritances and gifts — money or property received from a third party, whether before or during the marriage
- Business interests one spouse started or owned before the marriage
- Appreciation — growth in value of separate assets, which the clause can specify stays with the original owner
A well-drafted prenup also addresses what happens to income generated by separate property. For example, whether rental income from a premarital property stays separate or becomes shared gets its own line.
Marital Property and Commingling
A separate set of clauses defines which assets the couple intends to treat as shared. The marital home often gets its own paragraph spelling out how equity will be divided if the property is sold or if a divorce occurs. If one spouse contributes a large down payment from separate savings, the agreement can specify that the contributing spouse gets that amount back before any remaining equity is split.
You’ll also see language addressing commingling, which is one of the biggest risks to a prenup’s effectiveness. Mixing separate property with joint funds can erase its separate character. Deposit an inheritance into a joint bank account and you may lose the ability to claim that money as yours alone during a divorce. Courts in many states presume that once separate property is mixed with marital property, it becomes marital property unless you can prove otherwise. A thoughtful prenup includes specific language about how to keep separate assets identifiable, such as requiring them to remain in individually titled accounts.
Debt
Debt provisions sit alongside the property clauses. They typically state that premarital obligations like student loans or car notes remain the sole responsibility of the person who incurred them. The agreement can also assign responsibility for debts taken on during the marriage, whether equally or based on who benefited from the borrowing. Without these clauses, a divorcing spouse could end up sharing responsibility for debts they had no part in creating, depending on the state’s default rules.
Spousal Support Clauses
Most prenups include a section addressing spousal support (commonly called alimony). The clause can waive support entirely, cap it at a set amount, or tie it to a formula. A common structure bases payments on the length of the marriage — a set dollar amount per month for each year the couple was married, up to a maximum cap.
Courts in many states will honor spousal support waivers, but with limits. If enforcing the waiver would leave one spouse unable to support themselves, particularly if it would make them eligible for public assistance, a court can override the agreement and order support anyway. Some states also require that each party have independent legal counsel before a spousal support waiver is enforceable. The rules vary significantly, so this is one area where enforceability depends heavily on state law.
Sunset Clauses
Some prenups include a sunset clause — a provision causing the agreement to expire automatically after a set period or milestone. Once the expiration arrives, the prenup is no longer in effect unless the couple signs a new one or formally extends it.
Common triggers include:
- A fixed number of years of marriage, such as 10 or 20
- A specific life event, such as the birth of a child
- A financial milestone, such as one spouse paying off a specific debt
Sunset clauses aren’t required and don’t appear in every prenup. They tend to show up when one partner is reluctant to sign; the idea is that after enough years together, the couple’s finances are intertwined enough that the prenup’s protections are no longer needed. A handful of states also have their own sunset provision laws that phase out or end a prenuptial agreement after a certain period or life event.
What You Won’t See (or Shouldn’t)
A prenup can cover a wide range of financial matters, but certain topics don’t belong in the document, and including them can draw unwanted scrutiny to the rest of the agreement.
Child custody and child support cannot be set in advance. Courts decide those issues based on the best interests of the child at the time of the divorce, not based on what two people agreed to years earlier when no children may have even existed yet. Any clause attempting to lock in custody arrangements or child support amounts will not be enforced.
Lifestyle clauses, which impose financial penalties for conduct like infidelity or weight gain, have mixed enforceability. States that only allow no-fault divorce often refuse to enforce infidelity penalties because punishing marital conduct conflicts with the no-fault framework. States that recognize fault-based grounds for divorce are more willing to uphold them. Overloading a prenup with behavioral provisions can backfire: some courts will invalidate an entire agreement if it reads more like a conduct code than a financial contract.
Signature and Notary Pages
The last pages of the document contain the signature blocks where both parties formally execute the contract. Each person signs and dates. Requirements beyond that vary by state: some require witnesses, some require notarization, and some require both. A few require neither, as long as the document is in writing and signed by both parties.
If both parties have independent attorneys, the signature pages often include additional lines where each lawyer confirms they reviewed the agreement with their client and advised them on its legal consequences. This attorney acknowledgment isn’t required everywhere, but it adds a strong layer of protection against future claims that one party didn’t understand what they signed. Independent counsel also matters earlier in the process: when it comes to spousal support waivers in particular, some states will not enforce the waiver unless the person giving up support had their own lawyer at the time of signing.
Timing shows up on the signature page too, through the date. Attorneys generally recommend finalizing the agreement at least several weeks before the wedding, because a prenup signed the night before or the morning of the ceremony is a common red flag for duress. A few states impose specific waiting periods; one state requires at least seven calendar days between when a party first receives the final agreement and when they sign it.
When notarization is used, the document ends with a Certificate of Acknowledgment carrying the notary public’s official stamp or seal, their commission expiration date, and the jurisdiction where the signing took place. Notarization makes the document self-authenticating, so a court can accept it as genuine without additional proof of the signatures. Even where it isn’t required, many attorneys recommend it as a safeguard.
Clauses on Changing or Canceling the Agreement
Most prenups include language addressing how the agreement itself can be modified later. Under the framework used by most states, a prenup can be amended or revoked after the marriage only if both spouses agree in writing and sign the amendment or revocation. One spouse cannot unilaterally change or cancel it.
An amendment typically takes the form of a written addendum identifying the specific provisions being changed and the new terms replacing them. Both parties sign, and the addendum becomes part of the original agreement. A full revocation is a separate written document stating that the original agreement is no longer in effect. Neither an amendment nor a revocation requires any new exchange of value; the mutual written consent of both spouses is enough. Absent that mutual consent, the agreement remains binding as written unless a court sets it aside for fraud, duress, or unconscionability.