Can You Get a Prenup After Marriage?

Wondering if it's possible to get a prenup after you've tied the knot? While prenups are signed before marriage, you can still create a postnuptial agreement. Postnups work much like prenups but are designed for couples who are already married and want to clarify financial terms moving forward.

If you're considering a postnup or a prenup, Neptune can help. Neptune is a first-of-its-kind financial concierge built for couples with complex finances and professional ambition. Starting with prenups and postnups, we guide partners through high-stakes money decisions with clarity, empathy, and strategy.

By combining emotionally intelligent AI, vetted family lawyers, and transparent pricing, Neptune replaces tension with trust. We’re turning a traditionally fraught process into a moment of collaboration and financial alignment.

How Do Prenups and Postnups Work?

A prenup is an agreement where two people outline their values, financial goals, and expectations for the future. It serves as a blueprint for how they’ll handle money together through all of life’s changes. A postnup works the same way but is signed after marriage.

These agreements both aim to create a blueprint for future financial planning.

They can help couples:

• Have a healthy conversation about financial planning.
• Find a middle ground about valuables or other financial assets.
• Forge a blueprint for financial management well into the future.
• Create a tailored plan that helps you make honest decisions about your future.
• Decide what happens in the worst-case scenario of a separation.

A prenup needs to be drafted, signed, and filed ahead of your wedding day. If you’re already married, you will get a postnup agreement instead. The time you spend drafting a proper agreement can help provide clarity and a shared understanding of your future as you move forward together.

Take our quiz to find out how well it could work for your needs.

What If You Don’t Have One But Are Already Married?

You may decide after marriage that you do want to establish plans for your future when it comes to financial matters. A postnup is a great way to address any questions or concerns you have together so you can create a clear path moving forward.

The specifics of a postnup agreement vary depending on your location and state laws. Still, it does offer you some flexibility to make similar decisions to those you would make when drafting a prenup. The best time to start drafting a postnup is usually within the first months or years of your union.

Reasons to consider a postnup include:

• You want to separate business interests: If one spouse maintains a business, and you wish to minimize any risk to that business interest, a postnup can be an excellent solution. It could lay out how the spouses agree on the value of that business.
• Changes in financial status: In some situations, a postnup allows you both to consider the agreed-upon use of inheritances or gifts received during your relationship.
• Providing for a stay-at-home parent: When one partner decides to stay home to raise a family, creating a plan for how to navigate this process financially is another benefit of a postnup.

Postnups can be more complex because of state laws and the dynamics of your actual relationship. It isn't an uncommon agreement to pursue, but it can definitely feel overwhelming at times. 

You both need to consider many factors, which is why it's crucial to have an experienced attorney. They ensure the agreement is fair to both of you and legally sound.

Consider taking our postnup quiz to find out how incorporating this agreement into your partnership could further enhance your goals.

The Value of Planning for a Prenup Ahead of Your Wedding Day

If you’re not sure if you want to get a prenup now and are wondering if you should wait and draft a postnup instead, consider some of the clear benefits that come from making this decision now instead of putting it off.

• It is a collaborative process. You and your partner have the opportunity to discuss important financial decisions now and create a plan together.
• Build on a strong foundation for your financial goals. When you discuss your prenup, you have an open and honest conversation with your partner, outlining shared values and financial goals.
• Open communication is always a good thing in relationships. Talk about your ideas, needs, and concerns. Lay everything out on the table. Most importantly, be proactive in creating a plan for your future together now.

It's essential to take the time to discuss your financial goals, values, and needs. Doing this now, before your wedding day, allows you to clarify what happens moving forward, providing you both with greater peace of mind.

What To Do Now If You Need a Postnup

If your wedding day has passed, now is a good time to consider a postnup to help plan for your future. Your attorney can draft an agreement that reflects your goals and provides clarity around what lies ahead.

It’s also essential for your partner to have their own lawyer. Work with your attorney to create an explicit, well-structured agreement that supports both your needs and long-term vision.

Neptune Helps With Postnup Agreements

If you’re thinking about a prenup or are interested in a postnup, Neptune can offer you guidance and support. Built for alignment and protection, 95% of couples report feeling more confident, respected, and prepared after using Neptune. 

Start the conversation with Neptune today.