Any licensed attorney can prepare a prenuptial agreement, but the arrangement most likely to hold up in court is for each partner to hire their own separate family law attorney. A mediator can help the two of you reach a framework, and online templates exist, but both approaches still need independent attorney review before anyone signs. Who prepares the document, and how, is often what decides whether a judge enforces it years later.
Separate Attorneys for Each Partner
The strongest version of the process gives each partner their own family law attorney. Under the Uniform Premarital and Marital Agreements Act, adopted in some form by a majority of states, a court can refuse to enforce a prenup if a party did not have access to independent legal representation. That rule exists because the two partners have inherently competing financial interests, and a document negotiated without separate advocates tends to show it.
Your attorney explains what rights you would have under your state’s default divorce laws, shows you how the proposed prenup changes those rights, and negotiates terms that protect your interests. Your partner’s attorney does the same on the other side. The adversarial tension is the point. An agreement produced that way is far more likely to be balanced and to survive a later challenge.
Independent attorneys also run the financial disclosure process, where each partner inventories what they own, what they owe, and what they earn. Sloppy or incomplete disclosure is one of the most common reasons prenups get thrown out, and an experienced lawyer knows how to keep anything from slipping through.
One Attorney Drafting for Both Partners
Hiring a single attorney to write the prenup for both sides saves money upfront and creates serious problems later. Under ABA Model Rule 1.7, a lawyer has a concurrent conflict of interest whenever representing one client would be directly adverse to another, or when there is a significant risk that duties to one client would limit representation of the other. Prenup negotiation hits both triggers. One partner wants more protection; the other wants fewer restrictions. A single attorney cannot genuinely advocate for both sides of that equation.
Courts know this. When a prenup surfaces during a divorce and only one attorney was involved, judges scrutinize the agreement much more closely for unfairness. The partner who didn’t have their own lawyer has a strong argument that they didn’t fully understand what they were signing, which can be enough to unravel the entire document. Whatever you saved on legal fees gets swallowed many times over by the cost of relitigating property division from scratch.
Starting With a Mediator
Some couples prefer to work out the broad terms with a neutral mediator before bringing in attorneys. This approach works well for partners who communicate openly and want the process to feel collaborative rather than adversarial. A mediator helps you identify where you agree, work through sticking points, and reach a framework you both feel good about.
The critical limitation is that a mediator does not represent either of you. They cannot give legal advice, cannot tell you whether a proposed term is enforceable in your state, and cannot flag provisions that might hurt you down the road. A mediated prenup still needs to be reviewed and finalized by each partner’s own attorney before anyone signs. Skipping that step turns carefully negotiated terms into an expensive piece of paper a court may refuse to honor.
DIY Templates and Online Services
Online prenup generators and fill-in-the-blank templates are the cheapest option, and they carry risk proportional to that savings. The core problem is that family law varies substantially from state to state. A generic template may include provisions that are unenforceable where you live, miss requirements your state imposes, or use ambiguous language that a judge later interprets differently than you intended.
Financial disclosure is where DIY agreements most commonly fail. A valid prenup generally requires each partner to provide a full and accurate accounting of their property, debts, and income. Online services have no way to verify that your disclosure is complete or structured correctly. If you accidentally leave out a retirement account or undervalue a business interest, the other side can later argue the omission was intentional, giving a judge grounds to void the agreement entirely.
Some states also impose specific execution requirements beyond a signature. Depending on your jurisdiction, you may need witnesses, notarization, or both. A template downloaded from the internet won’t necessarily tell you what your state requires, and getting the formalities wrong can invalidate the agreement regardless of how fair its terms are.
What the Preparer Has to Get Right
Whoever drafts your prenup, the document has to clear certain baseline requirements to be enforceable. These flow from the Statute of Frauds, which requires contracts made in consideration of marriage to be in writing, and from the uniform acts most states have adopted in some version.
- Written and signed by both partners. Oral prenuptial agreements are not enforceable anywhere in the United States.
- Voluntary consent from each side. Pressure, threats, or manipulation make the document unenforceable.
- Access to independent legal representation. Under the UPMAA, a prenup can be voided if one partner did not have access to their own attorney. If a partner chooses not to hire a lawyer, the agreement must include a clear plain-language explanation of the rights being waived.
- Adequate financial disclosure. Each partner must receive a reasonably accurate description of the other’s property, debts, and income before signing. The right can be waived, but the waiver itself must be in a separate signed document made after independent legal advice.
- No unconscionable terms. A court can refuse to enforce any provision that was grossly unfair at the time of signing, even when every procedural box was checked.
Timing matters too. Presenting a prenup days before the wedding is a classic way to get it thrown out, because the other partner faces the impossible choice of signing unfavorable terms or canceling a wedding with guests already booked. Starting the process at least a few months before the ceremony gives both sides time to review, negotiate, and consult their own attorneys without feeling rushed.
One boundary worth knowing before you pay anyone to draft anything: a prenup cannot set child custody or limit child support, because those decisions must turn on the child’s best interests at the time of divorce. The UPMAA explicitly lists terms adversely affecting a child’s right to support as unenforceable. A drafter who promises otherwise is selling you a provision a court will strike.
What It Costs
Attorney fees vary widely with the complexity of the couple’s finances and the local legal market. For a relatively straightforward agreement, each partner can expect to pay roughly $1,500 to $10,000 for their own attorney. Hourly rates for family law attorneys generally fall between $250 and $1,000 per hour, with the total depending on how many rounds of negotiation the agreement requires and how many assets need to be documented.
Couples with significant business interests, multiple properties, or complex investment portfolios land at the higher end. Two salaried professionals with modest assets will pay considerably less. Either way, the cost of a properly prepared prenup is a fraction of what contested property division costs during a divorce, where legal fees routinely reach five or six figures.
Each partner paying for their own attorney also reinforces the independence of the process. If one partner funds both lawyers, that financial dynamic can later be used to argue the agreement wasn’t truly voluntary.