A prenup drafted by a family law attorney usually costs $1,500 to $3,000 per person, with simple online services starting around $600 per couple and complex financial situations easily running $10,000 or more combined. So how much does a prenup cost in your situation depends on three things: how complicated your assets are, where you live, and how much you and your partner need to negotiate before signing.
Price Tiers by Financial Complexity
The clearest way to estimate your cost is to figure out which complexity tier your finances fall into.
Simple Agreements: $1,500 to $3,000 Total
Couples with straightforward finances — defined savings accounts, no business interests, perhaps a home — generally pay between $1,500 and $3,000 total. At this tier the attorney works mostly from a template, customizing a handful of provisions around who keeps what and how debts get handled. The document is short, negotiations are minimal, and revisions are few.
Moderate Agreements: $3,000 to $7,000 Combined
Once retirement accounts, rental properties, stock portfolios, or future inheritance expectations enter the picture, costs climb to roughly $3,000 to $7,000 combined. The attorney needs more time to analyze each asset, classify it as separate or shared property, and draft provisions that account for growth over the life of the marriage. Retirement accounts alone can require specialized language addressing how future contributions get divided.
Complex Agreements: $7,000 to $15,000 or More
Couples with significant wealth, business ownership stakes, international assets, or trust fund interests should budget $7,000 to $15,000 or more. These prenups require custom clauses addressing business valuation methods, intellectual property rights, and sometimes cross-border property laws. When one partner owns part of a private company, the attorney may need to coordinate with accountants or business valuators, and every additional professional adds to the bill.
Online Prenup Services for Simple Situations
If your finances are genuinely simple and you and your partner already agree on the big questions, an online platform can cut costs sharply. HelloPrenup, the most established option, charges a flat fee of $599 per couple for a guided questionnaire that produces a state-specific agreement.1HelloPrenup. Affordable Prenup Solutions – HelloPrenup Pricing Plans Optional attorney review through the platform runs an additional $699 per partner, and online notarization costs $50.
The tradeoff is real. Online platforms work best when both partners have limited assets, no business interests, and no meaningful disagreements about terms. If you fill out the questionnaire and discover you actually disagree about spousal support or how a future inheritance should be treated, you’ll likely end up hiring attorneys anyway, and now you’ve spent the platform fee on top of traditional legal costs. For couples who’ve already talked through their expectations and have an uncomplicated picture, the savings can be substantial. For everyone else, this is where cost-cutting tends to backfire.
What Pushes the Price Up
Where You Live
Geography is one of the biggest cost drivers, and the variation is stark. Family law attorneys in major coastal cities charge $400 to $550 or more per hour, lawyers in secondary metro areas bill $250 to $400, and those in smaller markets or rural areas charge $150 to $300. The same prenup that costs $2,000 in a midsize Midwestern city could run $5,000 or more in Manhattan or San Francisco at identical complexity.
Volume and Type of Assets
Every asset and debt that needs to be disclosed, categorized, and addressed in the agreement adds attorney time. A couple with two checking accounts and a car is a fundamentally different project than a couple with brokerage accounts, rental properties, unvested stock options, and student loan balances. The financial disclosure most states require for enforceability can consume hours of attorney time when the asset picture is complicated.
Negotiation Time
Prenups that both partners agree on quickly cost less. Prenups that spark rounds of counteroffers, revised drafts, and heated calls between attorneys cost a lot more. This is the cost factor couples have the most control over. The more you and your partner align on terms before lawyers get involved, the less you’ll spend, and a candid conversation before the first consultation can save hundreds or thousands of dollars.
Specialized Provisions
Certain clauses require extra research and drafting time. Sunset clauses that phase out or void the prenup after a set number of years need careful language to avoid ambiguity. Spousal support waivers face heightened scrutiny in many states and require precise drafting to survive a challenge. Lifestyle terms like infidelity or social media clauses add complexity because the attorney has to define triggering events and consequences with enough specificity to be enforceable.
Other Professional Fees to Budget For
Attorney fees are the core expense, but several other costs can surface depending on your situation.
- Forensic accountants. If one partner owns a business or has complicated investment structures, a forensic accountant may be needed to verify asset values. These professionals charge $300 to $500 per hour, with total engagement costs often exceeding $3,000 for complex cases.
- Real estate appraisals. Professional appraisals for a standard single-family home run $350 to $550, though multi-unit or unusual properties cost more.
- QDROs. If the prenup addresses how retirement accounts would be divided, a Qualified Domestic Relations Order may eventually be needed. QDRO preparation typically costs around $400 per order.2QDRO.com. QDRO.com Pricing
- Certified translations. When financial documents are in another language, certified translation services run roughly $18 to $39 per page.
- Notarization. Most states require notarized signatures. Fees range from $2 to $25 per signature, so this is rarely a meaningful expense.
Not every prenup triggers these costs. A couple with no real estate, no business interests, and English-language financial records may pay nothing beyond attorney fees and the notary. Couples with complex finances should budget for at least one or two additional professionals.
How Attorneys Bill for Prenup Work
Flat Fees
Many family law attorneys offer a flat fee for straightforward prenups where the scope of work is predictable. The flat fee usually covers an initial consultation, drafting, and a limited number of revisions. This structure works well when both partners have already agreed on broad terms and the attorney’s role is translating those terms into enforceable language. If negotiations drag on, some attorneys shift to hourly billing for additional work, so ask upfront what happens if the project takes longer than expected.
Hourly Billing and Retainers
When the finances are complicated or the partners haven’t aligned on key terms, attorneys typically bill by the hour. Most require a retainer, commonly $1,500 to $4,000, that the attorney draws against as they work. Every call, email, draft revision, and negotiation session gets logged in six- or fifteen-minute increments. The retainer isn’t a cap. If the work exceeds the deposit, you’ll receive an additional invoice. Final bills include an itemized breakdown worth reviewing carefully.
The billing method often matters more than the quoted rate. An attorney charging $350 an hour who finishes in eight hours costs less than one charging $250 who takes fifteen. Ask prospective attorneys how many hours a prenup like yours typically takes, not just their rate.
Plan for Two Attorney Bills, Not One
Having each partner represented by an independent attorney is one of the strongest safeguards for enforceability. A single lawyer cannot ethically represent both sides of a negotiation, and courts scrutinize prenups where one party lacked professional advice. Roughly 30 states and the District of Columbia have adopted some version of the Uniform Premarital Agreement Act or its successor, which emphasize that access to independent representation matters when a court evaluates whether the agreement was voluntary and fair. Some states, including California, require each party to have their own attorney for certain provisions like spousal support waivers to be enforceable.
The budget implication: plan for two legal bills. If your attorney charges $3,000, expect your partner’s review attorney to charge somewhere in the $1,000 to $3,000 range, depending on whether they’re drafting from scratch or reviewing an existing document. The review attorney’s job is faster but still requires reading every clause, explaining the implications, and potentially negotiating changes. Trying to save money by having only one partner hire an attorney while the other signs without representation is one of the fastest ways to get a prenup thrown out later, and an unenforceable prenup is far more expensive than two attorney fees.
The Hidden Cost of Getting It Wrong
The most expensive prenup is one a court throws out. If disclosure was incomplete, one party lacked independent counsel, the terms were unconscionable, or someone signed under pressure, the agreement is worthless, and you’ve paid for both the original drafting and the divorce litigation that follows without the prenup’s protections in place.
Contesting or defending a prenup during divorce proceedings can easily cost $10,000 to $50,000 or more in attorney fees, depending on complexity and how far the dispute goes. Some prenups include a provision requiring the losing party to pay the other’s legal fees if someone challenges the agreement without grounds, creating a financial deterrent against frivolous challenges. Those provisions only help if the prenup itself survives scrutiny.
The upfront cost of doing a prenup correctly, with two attorneys, full disclosure, and adequate time for review, is almost always a fraction of what a contested divorce costs without one. Couples who invest in the process properly spend more today and buy themselves a far cheaper outcome if the marriage ends.