If your fiancé wants a prenup, it usually says more about their financial planning instincts than about doubts over the marriage, and your job now is not to decide whether to sign one but to decide whether to sign this one. Prenuptial agreements are increasingly ordinary: roughly 15 percent of married or engaged Americans report having one, up from around 3 percent in 2010. You have real leverage in how the document gets written, and the steps you take over the next few weeks matter more than the request itself.
Why the Request Usually Isn’t About You
People ask for prenups for practical reasons. A fiancé who owns a business, holds significant family assets, or has children from a prior relationship has financial exposure that a prenup addresses cleanly. Someone carrying heavy student debt may want to keep that obligation from becoming yours. Couples with a large income gap sometimes use these agreements to build in spousal support protections for the lower-earning partner. The goal in each case is to replace the uncertainty of a courtroom fight with terms both people agreed to while they still liked each other.
How the request arrives matters as much as the request itself. A fiancé raising the topic months before the wedding, offering to pay for your attorney, and willing to negotiate is doing it the right way. A one-sided document handed over two weeks before the ceremony with a sign-or-else ultimatum is a different situation entirely, and the law treats it differently too.
What a Prenup Can and Can’t Decide
Before you react to specific clauses, know what the agreement is actually allowed to do.
What It Can Cover
A prenup can define what counts as each spouse’s separate property (anything owned before the wedding, plus inheritances and personal injury settlements) and what counts as marital property subject to division. It can classify a business owned before the marriage, including future growth, as separate property, or give the non-owning spouse a share of appreciation without handing over control. It can specify that each person remains responsible for the debts they brought in. And it can address spousal support — waiving alimony, capping it, or tying it to the length of the marriage.
The spousal support provision is the one most worth scrutinizing. Some states refuse to enforce a waiver that would leave one spouse destitute or on public assistance, and even in states that uphold waivers, a judge can override the terms if circumstances have changed dramatically. If an alimony waiver is in your draft, this is where to push back hardest.
What It Can’t Cover
Courts draw firm lines around several topics, and clauses that cross them get struck down. In some cases they can make a judge skeptical of the whole document.
- Child custody and child support. Judges decide these based on what’s best for the child at the time of divorce, not what two adults agreed to years earlier.
- Incentives to divorce. A payout triggered only by filing for divorce is treated as against public policy.
- Lifestyle and behavior clauses. Penalties for weight gain, social media rules, infidelity fines — generally unenforceable, and sometimes damaging. A court that views a behavioral clause as egregious may question the fairness of the entire agreement.
When a court finds an unenforceable clause, the usual approach is to sever that provision and leave the rest intact. But the more problem clauses in a document, the more suspiciously a judge reads the whole thing.
Hire Your Own Attorney
Do not use an attorney your fiancé recommends, and do not share one lawyer to save money. Each person needs independent counsel. When both sides have their own attorney, it becomes much harder for either party to later claim they didn’t understand what they signed. Independent representation isn’t technically required in most states, but a prenup where one side had no attorney is significantly easier to challenge in court — which is a reason to insist on your own lawyer, not a reason to go without one.
Expect roughly $200 to $600 per hour for a family law attorney, with total fees for the full drafting and review process typically running a few thousand dollars per side. If your fiancé is serious about the agreement being enforceable, they have a direct interest in you being well-represented, and many will offer to cover your legal fees for that reason.
Insist on Time and Full Disclosure
Two process failures sink more prenups than any substantive term: rushing the signing, and hiding assets.
Timing
A prenup signed under pressure — deposits paid, invitations out, family arriving — gives a judge grounds to void the agreement for lack of voluntary consent. Attorneys generally recommend signing at least one to three months before the wedding, and starting the process three to six months out to leave room for genuine negotiation. At least one state requires a minimum seven-day waiting period between receiving the agreement and signing it.
You are not obligated to sign on anyone else’s timeline. If the document arrives too close to the wedding, ask to postpone signing until after the ceremony and convert it to a postnuptial agreement instead. Postnups cover the same ground; courts examine them a bit more closely, but they’re enforceable in most states.
Financial Disclosure
Both sides must provide honest, complete disclosure of their finances. This means recent tax returns and pay stubs, bank and investment statements, retirement balances, real estate holdings, business valuations, outstanding debts, and significant expected inheritances. Hiding or understating assets is one of the fastest ways to get a prenup thrown out later.
This cuts both ways. Demand to see your fiancé’s full financial picture with the same transparency they’re asking of you. If you’re being asked to waive rights to specific assets, you need to know what those assets actually are and what they’re worth.
Negotiate the Draft
The first draft from your fiancé’s attorney is a starting point, not a final offer. Treat it like any other negotiation, and expect to go back and forth. Common adjustments worth asking for:
- Spousal support protections tied to the length of the marriage, rather than an outright waiver.
- A share in the appreciation of assets that grew during the marriage, especially if you contributed indirectly (raising children, supporting a career move) to that growth.
- The right to stay in the family home for a reasonable period after separation.
- A sunset clause.
A sunset clause causes some or all of the agreement’s terms to expire after a set period, often 10 to 15 years of marriage. Some sunset clauses void the entire document; others expire only specific provisions, such as an alimony waiver, while leaving property terms intact. The reasoning is simple: a couple married for two decades has built a genuinely shared financial life, and protections that made sense at year one may not reflect reality later. If no sunset clause appears in the draft, asking for one is a reasonable move.
Also look closely at any waiver of your elective share. Most states give a surviving spouse the right to claim a portion of the deceased spouse’s estate regardless of what the will says, and a prenup can waive that right. Waivers are common when one or both partners have children from prior relationships, but understand what you’re giving up: the legal safety net that guarantees you a portion of their estate even if their will leaves you nothing. A partial waiver, or a waiver tied to a life insurance requirement, is often a workable middle ground.
If your fiancé refuses to negotiate, or insists on terms their own attorney would describe as lopsided, that tells you something important about how financial decisions will work in the marriage itself.
Watch for Signs the Agreement Won’t Hold Up
A prenup that is wildly one-sided can be declared unconscionable and thrown out. Courts look at fairness at the time of signing, and in some states at the time of enforcement. An agreement that seemed reasonable when both spouses earned similar incomes might look unconscionable ten years later if one spouse gave up a career to raise children and the document leaves them with nothing. Provisions that adjust based on the length of the marriage or changes in circumstances help an agreement survive this kind of challenge.
Other process failures that make an agreement vulnerable: missing signatures, no notarization in states that require it, no written document at all (every state requires writing — oral promises about finances carry no weight), concealed assets, and signatures obtained under duress. Many of these cut in your favor if the agreement is unfair, but the better outcome is a document you’d be willing to live with, not one you’re hoping to break later.
You Can Modify or Revoke It Later
A prenup is not permanent. Both spouses can agree to modify or revoke it at any time after signing, but the changes must be in writing and signed by both parties. A verbal agreement to ignore the prenup, or simply acting as though it doesn’t exist for years, won’t legally revoke it. Attorneys generally recommend reviewing the terms every five years, and especially after major life changes — a career shift, an inheritance, the birth of children.
What Happens if You Don’t Sign
You are not legally required to sign a prenuptial agreement. If you refuse, you can still get married — the wedding doesn’t depend on it. What changes is that your state’s default divorce laws will govern property division and spousal support if the marriage ends. About 40 states use equitable distribution, where a judge divides marital property based on what’s fair under the circumstances, which doesn’t necessarily mean 50/50. The remaining states follow community property rules, which generally split marital assets down the middle.
Default rules protect both spouses to some degree, but they also remove your ability to customize the outcome. A prenup you helped negotiate might give you better protections than a judge’s default framework, or worse ones, depending on the terms. The question isn’t really whether to sign any prenup. It’s whether to sign this one. If the terms aren’t fair, say so. If your fiancé won’t negotiate in good faith, that’s worth knowing before the wedding rather than after.