Can a Prenup Prevent Alimony? Your Complete Guide to Spousal Support Waivers

When couples start thinking about a prenup, alimony is often one of the more sensitive topics to navigate. Understandably so. It’s not easy to talk about what happens if the relationship ends before you’re even married. But planning with care and clarity is one of the best things you and your partner can do for the future.

So, can a prenup prevent alimony? The short answer is yes in most cases. However, this involves some critical caveats, depending on your state, situation, and the terms of the prenup. 

Here’s everything you need to know about how spousal support waivers work in a prenuptial agreement.

What Is Alimony?

Alimony, also known as spousal support or maintenance, is money one spouse may be legally required to pay the other after a divorce. It's meant to help a lower-earning or non-earning spouse transition financially after the marriage ends. 

The amount and duration of alimony depend on several factors, such as the length of the marriage, the earning capacity of each spouse, contributions made during the marriage (financial or otherwise), and more.

Can a Prenup Prevent Alimony?

Yes, a prenuptial agreement can include a clause that waives or limits alimony. This is called a spousal support waiver, and it’s one of the most common clauses people seek in a prenup. This is especially true when there’s a significant income disparity between partners or when one partner enters the marriage with substantial assets.

But here’s the thing: Just because a prenup includes a spousal support waiver doesn’t automatically mean it will be enforceable. Judges in many states will still review the clause to make sure it’s fair and lawful at the time of divorce, not just at the time the agreement was signed.

What Makes a Spousal Support Waiver Enforceable?

Whether a court will uphold your prenup’s alimony clause depends on several factors:

1. State Laws

Family law is state-specific. Some states, like California, allow spousal support waivers but scrutinize them heavily. A waiver may be revoked if enforcing it is deemed unconscionable, such as leaving one spouse reliant on public assistance.

Others, like New York, are more likely to uphold these waivers as long as both parties have independent legal counsel and provide full financial disclosure.

In contrast, some states won’t enforce a waiver at all if doing so would leave one party destitute. That means a clause that seems fair at the time of signing could still be overturned years later if circumstances change dramatically.

2. Fairness at the Time of Enforcement

Even if both partners agreed to waive alimony in the prenup, a court might set aside that clause if it would be unconscionable. In other words, it’s shockingly unfair at the time of divorce.

For example, if one spouse gave up their career to raise children and now has no income or support system, a judge may decide alimony is necessary, regardless of what the prenup says.

3. Independent Legal Advice

Courts are more likely to enforce an alimony waiver if both partners had their own lawyers when they signed the prenup. This is in place to ensure that each party understands their rights and the consequences of waiving them.

At Neptune, we simplify this process by connecting each partner with an independent lawyer as part of your prenup journey. This ensures your agreement holds up, not just in principle but in court as well.

4. Full Financial Disclosure

Both parties must be transparent about their income, assets, and debts. Hiding financial information can invalidate the entire prenup, including the alimony clause.

What Are the Pros and Cons of Waiving Alimony in a Prenup?

Thinking about waiving alimony in your prenup? It can bring upfront clarity and peace of mind, but it’s not without emotional and legal risks worth weighing.

Pros:

• Financial clarity from the start of the relationship
• Prevents lengthy court battles or unpredictable support awards
• Protects future income or expected business growth
• Supports mutual independence if that aligns with your values

Cons:

• May not be enforced if deemed unfair later (this is a relatively rare occurrence)
• Can feel emotionally loaded and difficult to negotiate
• Risks leaving one partner vulnerable, especially if life circumstances change

Alternatives to a Full Alimony Waiver

You don’t have to go all-or-nothing. Some couples choose to:

• Limit alimony to a specific amount or time frame
• Tie alimony to the length of the marriage
• Include review clauses that allow the agreement to be revisited after certain milestones (like having children)
• Use sunset clauses that let the alimony waiver expire after a set number of years

These kinds of flexible arrangements can offer protection while still accounting for the unknowns of the future.

How Neptune Helps Couples Navigate Alimony and Prenups

Alimony and prenups don’t have to be taboo. In fact, when done right, a prenuptial agreement that addresses spousal support can be one of the most caring, collaborative steps you take as a couple.

If you’re wondering whether to include a spousal support waiver or how to protect both of your futures, Neptune’s here to guide you every step of the way.

At Neptune, we believe prenups aren’t just legal tools; they’re part of your financial and emotional wellness. We help have the right conversations early so that decisions around alimony and other financial matters aren’t rushed or reactive.

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

Find assistance for prenups that include custom support for spousal support clauses. Whether you want to waive, limit, or protect alimony provisions, our lawyer partners make sure your agreement is legally sound and emotionally fair.

Start the conversation with Neptune today.