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California prenups done right.

Create a California prenuptial agreement with guidance from Neptune's AI and two vetted California family law attorneys - one for each partner.

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Neptune helps youfigure out where to start.

Step 1

Your relationship comes first – get on the same page before lawyers enter the picture

Talk through values, goals, and assets, together. Neptune guides the conversation before the lawyers do, saving you money in the process.

Couple discussing prenup
My partner is the primary earner, how can we draft a prenup that's fair?
User
Before we define "fair," it helps to know what each of you needs to feel secure. Is the concern about financial dependence, future plans, or making sure contributions beyond money are valued?
Neptune

Start Your Prenup Journey:

  • Get personalized, intelligent guidance
  • Talk through what matters before expensive lawyers are on the clock
  • Answer simple questions about your relationship and finances
    • Chat with Neptune

    Step 2

    Select vetted California lawyers - for both of you

    Each partner works with an experienced California family lawyer used to navigating prenups, complex finances, startup equity, and inheritances. No retainers, no mystery bills.

    Meeting with lawyers
    My partner and I own property in different states, how do we navigate state laws?
    User
    Totally got it. Owning property in different states often brings up questions about fairness, control, and long-term plans. Let's start with a simple question. What matters most to each of you about how those homes are treated in the relationship?
    Neptune

    Expert Legal Counsel with Flat-Rate Pricing:

  • Free consultations before you commit
  • California attorneys with an average of 22+ years of experience with prenups
  • $5k all-in pricing for both attorneys through Neptune
    • Book your free lawyer consultation

    Step 3

    Craft your California prenup agreement

    Each partner is represented by their own independent counsel, the best way to support a fair, enforceable California prenup agreement. This is not a one-size-fits-all template. Your attorneys create a customized agreement for you and your partner, based on your actual finances and priorities.

    Crafting the prenup
    I think we're ready, where do we get started?
    User
    Amazing! The first step is getting clear on what matters most to each of you. Think of it as a values check-in, not just a legal checklist. What's the most important money value you each want the prenup to reflect?
    Neptune

    Review Your Agreement:

  • Securely share financial information
  • You will discuss your agreement 1:1 with your attorney
  • Make updates to ensure it reflects your shared priorities
    • Start your prenup

    Step 4

    Sign your California prenup with confidence. Neptune handles the rest.

    From final signatures to notarization, we ensure every step is smooth and secure for your California prenup so you can focus on what's next.

    Signing the prenup
    I think we've found some great common ground. Is the next step signing the prenup?
    User
    You're almost there! Next, both of you will review the final draft with your attorneys, sign, and we'll coordinate notarization so everything is legally sound.
    Neptune

    Finalize Your Prenup:

  • Review and sign your agreement
  • Notarize with ease
  • Receive white-glove support and on-demand guidance
    • Get started

    Our Price Commitment

    Transparent Pricing. Concierge Support.
    Personalized Agreements.

    DIY Template

    $0-$599

    No Pre-Lawyer Alignment

    Fill-in-the-blank template you complete yourself, no guidance

    No Lawyer Consultation

    Neptune

    Neptune

    $5k

    for both attorneys

    24/7 AI with top-lawyer insight, get aligned before fees start

    Enforceable

    Unlimited free consultations

    Start Your Prenup

    Traditional Lawyer

    $10-20k+

    for both attorneys

    No Pre-Lawyer Alignment

    Enforceable

    Up to $500/hr for Lawyer Consultation

    What Neptune couples are saying

    Alignment. Peace of Mind. A plan for what's next.

    “My fiancé and I had an excellent, very positive experience with Neptune. The team was attentive, thoughtful, and highly communicative in helping me find a prenup lawyer. Neptune was such an excellent resource!”

    Luke & Ryan

    Lawyer & Software Engineer

    “Never really do reviews or anything but yeah wanted to make a point to do one for Neptune. My lawyer, Craig, could not be happier with the services he provided. The expertise, communication, and punctuality - exceeded all expectations with this service on Neptune.”

    Mark

    Real Estate Investor

    “The concept of this service is genius and I feel so grateful to have found a source to navigate something so uncharted as a prenup. This was a perfect resource for my now husband and I to start our marriage the strongest way possible.”

    Philip & Nick

    Startup Founder & Product Manager

    Couples at top companies trust Neptune

    Google
    Goldman Sachs
    McKinsey & Company
    Johnson & Johnson
    OpenAI
    Mass General Brigham
    Disney
    Coinbase
    Google
    Goldman Sachs
    McKinsey & Company
    Johnson & Johnson
    OpenAI
    Mass General Brigham
    Disney
    Coinbase
    Google
    Goldman Sachs
    McKinsey & Company
    Johnson & Johnson
    OpenAI
    Mass General Brigham
    Disney
    Coinbase
    Google
    Goldman Sachs
    McKinsey & Company
    Johnson & Johnson
    OpenAI
    Mass General Brigham
    Disney
    Coinbase

    Frequently asked questions

    What is Neptune?

    Neptune helps couples navigate the financial and legal side of building a life together — starting with prenups. Instead of DIY templates or automated generators, we guide you and your partner through values alignment first, then connect you with vetted family law attorneys to draft a tailored agreement.

    Is the initial consultation free?

    Yes. Each partner gets a free 20–30 minute conversation with their attorney to learn about their background and share your situation. After that, you decide whether to move forward.

    How much does a prenup cost?

    A typical prenup costs $5,000–$20,000+ when you hire two hourly attorneys. With Neptune, the total cost is $5,000 for both lawyers — flat rate, no surprise bills. Our attorneys average 22+ years of family law experience.

    Why is Neptune more affordable?

    We handle the upfront intake, alignment, and organization so your attorneys can focus on the legal work — not admin and back-and-forth. That efficiency, combined with flat rates we negotiate with our vetted lawyers, means better guidance at a predictable price.

    How long does a prenup take?

    Typically a few weeks to a few months, depending on the complexity of your terms and how quickly you and your partner align. Our process is designed to keep things moving with guidance from your attorneys at each step.

    What should we expect from the lawyers?

    Your attorney will take the time to understand your relationship, finances, and what matters to each of you. Expect clear guidance on your options and how the process works from start to signature. Neptune works with experienced family lawyers who understand both litigation and collaborative practice. They know how courts treat prenups and they understand the emotional weight of these conversations. That means less friction between you and your partner, and an agreement you both feel good signing.

    Can Neptune help with anything besides prenups?

    Yes. Neptune also helps couples with wills and trusts, tax filing, and marriage immigration.