How Much Does a Prenup Cost? 2026 Flat-Fee Answer

What a Prenup Costs in 2026

A prenup through Neptune is a $5,000 flat fee, and that single payment covers both partners' attorneys start to finish. There's no separate bill for each side and no hourly meter running behind the scenes. You know the total before any drafting begins.

That's a different experience from the open market. When couples hire two attorneys who bill by the hour, the couple-total often lands between $3,000 and $20,000 or more, depending on where you live and how complex your finances are. In the priciest metros, boutique matrimonial engagements can run into five and even six figures couple-total for high-asset negotiations. State-by-state data shows a simple agreement in California typically starting around $3,000 to $5,000, climbing well past $10,000 once businesses or multi-state property enter the picture.

Here's the reframe worth holding onto: a prenup isn't a defensive move against your partner. It's a financial planning step you take together. You're writing down how you'll handle money as a partnership, and how pre-marriage assets are treated if the marriage ever ends. Couples who talk through this early tend to walk away with more clarity about their shared goals, not less trust.

Why Each Partner Needs a Separate Attorney

Each of you needs your own independent attorney. Using a single shared lawyer is one of the most common reasons courts throw out prenups, because one attorney can't fairly represent two people with potentially different interests.

Some states go further and effectively require independent counsel for certain provisions to hold up. In California, for example, a waiver of spousal support generally isn't enforceable unless the party giving it up was represented by their own lawyer. Independent counsel for each partner is highly recommended for an enforceable prenup, and in these situations it's closer to mandatory.

The worry couples usually have is that "two lawyers" means double the cost and double the coordination headache. Neptune handles that differently. We pair each partner with an experienced attorney (many with 20+ years of practice), and we manage the full process end to end. The $5,000 flat fee already includes both attorneys, so two lawyers doesn't mean two invoices or two sets of back-and-forth for you to referee.

How Prenup Attorney Fees Actually Add Up

Most family law attorneys bill by the hour, and prenup rates typically run $250 to $1,000 per hour in 2026. Major metros like New York and Los Angeles sit at the top of that range, while smaller markets come in lower. The 2025 Clio Legal Trends Report put the average U.S. family law rate around $312 per hour, but specialists in expensive cities charge far more.

The reason hourly costs get unpredictable is the negotiation itself. A prenup usually goes through multiple drafts. Your attorney drafts, your partner's attorney reviews and marks it up, then it comes back, and each round adds billable time on both sides. If either of you requests changes, the clock resets again.

Certain features drive the total higher regardless of billing method:

• Business ownership requires valuation language and careful drafting around future growth.
• Real estate across multiple properties or states adds disclosure and title work.
• [Inheritance and trust interests](https://meetneptune.com/blog/prenups-and-inheritance) need coordination with estate planning.
• Custom provisions like spousal-support terms take extra drafting and negotiation.

Here's how the common approaches compare:

The online template row deserves a caution. A free or low-cost template can miss state-specific requirements, and an agreement that isn't enforceable defeats the point of doing it at all.

Why Flat-Fee Pricing Beats Hourly for Couples

The biggest advantage of a flat fee is that it removes the guessing. With hourly billing, every phone call, every revision, and every round of negotiation between the two attorneys adds to a total you can't see until the invoice arrives. Couples routinely start expecting $4,000 and finish closer to $12,000.

A single bundled payment fixes that. Because Neptune's $5,000 covers both partners and both attorneys, the number doesn't move based on how many conversations you have or how many drafts you go through. You can take the time to get the terms right without watching a meter.

Our managed, guided process is what keeps the cost flat. We structure the disclosures, coordinate between the two attorneys, and keep the agreement moving, so the work stays efficient even when your discussions take a few extra rounds. That predictability is often what finally gets couples to start.

How to Keep Prenup Costs Down

A lot of couples put off the prenup conversation for months because they assume it's a luxury they can't afford. That assumption costs them more than money. It delays a planning conversation that's actually easier and cheaper when there's no wedding-day deadline looming.

If you do go the hourly route, the single most effective way to reduce billable hours is to arrive prepared. Before your first meeting, pull together:

• A detailed list of assets and debts for each partner
• Recent property appraisals or account statements
• Your last two or three years of tax returns
• A short written summary of what you both want the agreement to address

When you're choosing an attorney, look for genuine prenup experience, clear flat-fee pricing rather than open-ended hourly billing, and proper licensure in your state. The American Bar Association offers guidance and lawyer-referral resources if you're vetting on your own.

Most of all, treat this as a fairness-and-alignment exercise instead of a negotiation to win. As Michael C. Cotugno, Esq., Managing Partner at Neptune Legal, puts it: "Understanding a partner's relationship with money, their historical experiences of abundance or scarcity, their anxieties tied to financial stability, or their personal definitions of success, allows for a deeper, more empathetic understanding of them as a whole individual." That understanding is the real product. The document just writes it down.

Ready to see how the process works? Start at how it works.