A prenuptial agreement is a contract two people sign before marrying that settles, in advance, how property and debts will be treated during the marriage and divided if it ends. Far from planning for failure, it is the one financial conversation every couple benefits from having while things are calm.
This template covers the core of every prenup: each party's separate property, premarital debts, marital property rules, and spousal support. Download it in Word and PDF, then sign it before a notary well ahead of the wedding.
What a prenup can and cannot decide
A prenup can classify property as separate or marital, protect a business or family assets, allocate premarital debts, and address spousal support. It cannot decide child custody or child support: those belong to the court based on the child's best interests at the time. It also cannot encourage divorce, impose personal conduct rules with financial penalties in most states, or leave one spouse destitute while the other prospers. Estate planning is a legitimate and common subject: spouses can waive elective share rights so that property passes as their wills direct, which matters most in second marriages with children from prior relationships.
- Typical protections: a business you built, a home you already own, expected inheritances, retirement savings, and separation from a partner's student loans.
- Off limits: child custody, child support, and terms a court would find unconscionable.
What makes a prenup enforceable
Most states follow the Uniform Premarital Agreement Act, and courts test prenups on the same themes everywhere: voluntary signature, fair and reasonable financial disclosure, no unconscionable terms, and time to reflect. The classic failure cases are a prenup presented days before the wedding, hidden assets, or a spouse who never saw a lawyer signing away everything. Sign months in advance, disclose fully, keep the terms reasonable, and have each party consult independent counsel: those four habits win nearly every enforceability fight before it starts.
Independent counsel is the strongest safeguard
A few states, including California for spousal support waivers, effectively require each party to have their own attorney for certain terms to be enforceable. Even where optional, separate counsel for each party is the single best investment in the agreement's durability.
The right way to do it: timeline and signing
Start the conversation early, ideally when the engagement begins. Exchange complete financial summaries: assets, debts, and income, with statements to back them up. Negotiate terms both of you consider fair, then sign before a notary at least 30 days before the wedding, with each party keeping an original. Revisit the agreement after major changes: children, a business sale, or a move to another state, where a postnuptial amendment can update the terms.
Attach the financial disclosures to the agreement as exhibits rather than leaving them as loose emails. Years later, the attached schedules are what prove each party knew exactly what the other owned and owed on the day they signed, which is half of every enforceability fight.
Already married? The equivalent document is the postnuptial agreement, and unmarried couples living together use a cohabitation agreement. A prenup also works best alongside an up-to-date last will and testament, since the two documents divide property under different scenarios.
The provisions of a prenup, explained
Every prenup is built from the same four blocks. Understanding what each one does, and what the default rule would be without it, makes the negotiation far less abstract.
Separate property vs. marital property
Without a prenup, state law draws the line: community property states treat most assets acquired during the marriage as owned 50/50, while equitable distribution states divide marital property by what a judge finds fair. A prenup replaces those defaults with the couple's own rules. The classic structure keeps everything each person brings into the marriage, plus gifts and inheritances, as separate property, and defines what counts as marital. The details matter enormously: decide whether appreciation of separate assets stays separate, and whether income earned during the marriage is shared or kept separate. Commingling is the great destroyer of separate property, so the agreement should also say what happens when separate money lands in a joint account or pays down a joint mortgage.
Protecting a business
A business owned before the marriage is the single most common reason people sign prenups. Without one, the growth of the business during the marriage can become marital property, and a divorce can force a valuation fight, a buyout, or even a sale, with business partners watching from the sidelines. A prenup can classify the business and its appreciation as separate property, fix a valuation method in advance, and confirm that the other spouse acquires no management rights. Many partnership and shareholder agreements actually require owners to obtain a prenup for this reason.
Debts: keeping them where they started
A prenup can confirm that each spouse's premarital debts, student loans above all, remain their sole responsibility, and set the rule for debts taken on during the marriage. This protects a debt-free spouse from collection against marital assets in some scenarios and, just as importantly, sets expectations about how the household will handle borrowing. Creditors are not bound by the couple's private agreement, but between the spouses it controls who ultimately bears each obligation in a divorce.
Spousal support: the most sensitive clause
Couples can agree to limit, fix, or waive spousal support (alimony), and courts scrutinize this clause more than any other. A waiver signed without independent counsel is unenforceable in some states, and even a properly executed waiver can be set aside if enforcing it would leave a spouse in hardship at the time of divorce. Alternatives to a full waiver include a formula tied to the length of the marriage, a fixed lump sum, or a sunset clause under which support rights revive after a milestone anniversary. The more one-sided the support term, the more procedural protection it needs.
Common prenup mistakes that cost enforceability
- Presenting the prenup days before the wedding, the textbook fact pattern for a duress challenge
- Incomplete disclosure: an undisclosed account or a lowballed business valuation can void the whole agreement
- Skipping independent counsel for the less wealthy spouse, especially where support is waived
- Terms so one-sided a court calls them unconscionable, which sinks the agreement rather than just the offending clause
- Including custody, child support, or lifestyle clauses that are void and invite scrutiny of everything else
- Ignoring the agreement after the wedding: commingling accounts and retitling assets jointly can quietly unwind the property plan
- Never updating it after children, a business sale, or a move to a community property state
- Losing the signed originals, then trying to enforce a photocopy of a contested document decades later
A prenup is maintained, not just signed
The agreement classifies property, but daily behavior can reclassify it. Keeping separate property in separately titled accounts, documenting gifts between spouses, and amending the agreement (by postnuptial agreement) when life changes are what keep the plan intact over a long marriage.
How state law shapes your prenup
Nine states follow community property rules, under which most property acquired during the marriage belongs to both spouses equally; the rest apply equitable distribution, where a judge divides marital property by fairness factors. A prenup matters in both systems but does different work: in community property states it opts the couple out of the automatic 50/50 regime, while in equitable distribution states it removes the unpredictability of a judge's discretion. Most states have adopted the Uniform Premarital Agreement Act, which standardizes the enforceability tests, but important details still vary: waiting periods between signing and the wedding, independent counsel requirements for support waivers, and how aggressively courts review fairness at enforcement rather than only at signing.
Because couples move, the agreement's governing law clause and a signing process that satisfies the strictest plausible standard (full disclosure, separate counsel, months before the wedding, notarized signatures) are the best insurance that the prenup travels well. When significant assets are involved, have a family law attorney in your state review the final draft; this service provides documents and general information, not legal advice for your situation.
A prenup also has a life after the wedding, and how the couple behaves determines how well it holds. Keep separate property genuinely separate: titling an inherited account jointly or routinely mixing it with marital funds can convert it in whole or in part, whatever the agreement says. Follow the agreement's own terms on any payments or disclosures it requires, and revisit the document on major events (a business launch, a large inheritance, a move to another state, children), since amendments are valid when executed with the same formalities as the original. Some couples build in a sunset clause that expires the agreement after a set number of years of marriage; whether that fits is a personal choice, but it should be a deliberate one made at signing, not a surprise discovered at enforcement.
Frequently asked questions
When should we sign the prenup before the wedding?
As early as possible, and at least 30 days before the ceremony. Last-minute signatures are the most common reason courts find duress and refuse enforcement. California builds in a mandatory seven-day review period; good practice everywhere is far longer.
Do we each need our own lawyer?
It is strongly recommended, and for certain waivers in some states, practically required. One lawyer cannot represent both of you: independent review for each party is what proves the agreement was understood and voluntary.
Can a prenup decide who gets custody of our children?
No. Custody and child support are always decided by the court based on the child's best interests at the time of separation. Any prenup clause on those subjects is void.
Is a prenup valid if we move to another state?
Generally yes: states enforce agreements valid where signed, and this template includes a governing law clause. A significant move is still a good moment to review the terms, since community property and equitable distribution states treat marital property differently.
What happens if we never divorce?
Then the prenup mostly stays in the drawer. Its property classifications can still matter at death, interacting with wills and elective share rights, and its debt provisions protect each spouse from the other's creditors throughout the marriage.
Can we change or cancel the prenup after the wedding?
Yes, at any time, but only in writing signed by both spouses; after marriage the amending document is a postnuptial agreement. Oral modifications are ineffective, and simply behaving inconsistently with the prenup does not formally revoke it, though commingling can undermine specific property classifications.
What is a sunset clause in a prenup?
A provision under which some or all of the agreement expires after a milestone, commonly a set wedding anniversary. Couples use sunsets to make the prenup feel like protection for the risky early years rather than a permanent arrangement. Draft them carefully: a full sunset can revive the exact uncertainty the prenup was meant to remove, so many couples sunset only the support terms.
Does a prenup protect an inheritance I have not received yet?
Yes. The agreement can classify expected and future inheritances as separate property, which is one of its most common uses. Keep any inheritance you later receive in separately titled accounts, because depositing it into a joint account can convert it into marital property despite the agreement.
Does a prenup need to be notarized or witnessed?
Requirements vary by state: a signed writing is the universal minimum, and notarization is required in some states and strongly recommended everywhere as proof against later claims of forgery or duress. A few states also use witnesses. Signing before a notary with each party receiving an original is the safe practice in all fifty states.
Is a prenup only for wealthy couples?
No. Prenups are just as useful for allocating student debt, protecting a small business or a professional practice, clarifying finances in second marriages with children from prior relationships, and simply forcing the money conversation before the wedding. Divorce litigation over property routinely costs more than the most carefully lawyered prenup.
Can a court throw out our prenup?
Yes, if it finds involuntariness, inadequate disclosure, unconscionable terms, or defective execution. Courts also strike individual void clauses, such as custody terms, while enforcing the rest if the agreement has a severability clause, as this template does. The couples who lose enforceability fights are almost always the ones who signed late, hid assets, or skipped independent counsel.