The Postnuptial Agreement: Make Financial Decisions While You’re Still in Love

Nobody wants to talk about this. That’s exactly why you should.

Here’s a conversation that doesn’t happen enough: two married people, happy and in love, sitting down to make clear financial decisions about a complicated asset — before anyone is angry, before anyone has hired a lawyer, before the stakes feel existential.

That conversation is a postnuptial agreement. And for families with carried interest, it might be the most consequential financial planning you ever do.

What a postnuptial agreement actually is

A postnuptial agreement (“postnup”) is a legal contract between married spouses that defines how assets will be divided in the event of divorce or death. It’s the married-person version of a prenup — same concept, signed after the wedding instead of before.

Postnups are legal in all 50 states, though enforcement standards vary. In California, a valid postnup requires:

• Full financial disclosure by both parties
• Independent legal counsel for each spouse (or a knowing waiver)
• Voluntary execution — no coercion or undue pressure
• The agreement must be “not unconscionable” at the time of enforcement

That last point is important. A postnup that gives one spouse everything and the other nothing is unlikely to be enforced. Courts want to see fairness, even if the division isn’t 50/50.

Why carried interest makes this urgent

Most married couples can get by without a postnup. Their assets are straightforward: bank accounts, retirement funds, real estate, maybe some stock. These assets have clear values, are easily divided, and are well-understood by the legal system.

Carried interest is none of these things. It’s illiquid, uncertain, and poorly understood — even by many family law attorneys. Without a postnup, dividing carry in a divorce requires:

• Forensic accountants ($400–800/hour) to value the carry
• Experts who disagree about methodology, discount rates, and assumptions
• Months or years of negotiation over an asset neither side can easily liquidate
• Legal fees that can easily reach six figures

Consider two composite scenarios:

Without a postnup

A couple separates after 12 years of marriage. The in-spouse has carry allocations across four fund vintages. The out-spouse has never seen the fund documents and doesn’t know the carry allocation percentage. What follows:

• Discovery: 4 months of requests for documents the in-spouse claims are confidential
• Forensic accounting: two experts, two different methodologies, two wildly different valuations
• Mediation fails because the parties can’t agree on basic assumptions
• Trial: a judge with no venture capital experience decides the value
• Total cost: $380K in combined legal and expert fees
• Timeline: 26 months from filing to final judgment

With a postnup

The same couple, but they signed a postnup five years into the marriage when carry was first allocated. The postnup specifies:

• Carry earned during the marriage is community property
• The valuation methodology to be used (agreed upon while still cooperative)
• The discount rate for illiquidity
• Whether the out-spouse receives a lump sum or tracks distributions over time
• Which documents the out-spouse has the right to review

When the same couple separates:

• The framework already exists. No fight over methodology.
• One forensic accountant runs the agreed-upon model.
• Negotiation focuses on a narrow set of variables, not fundamental disagreements.
• Total cost: $42K in combined fees.
• Timeline: 4 months.

The difference: $338K saved and 22 months of life reclaimed. And crucially, decisions were made when both parties were rational, informed, and acting in good faith.

What a carry-focused postnup should address

Not every postnup needs every provision. But for families with meaningful carried interest, these are the key areas to consider:

1. Classification of carry

Is carry earned during the marriage community property, separate property, or something in between? In California, the default is community property for carry earned during marriage. But the details matter:

• What about carry in a fund that was raised before the marriage but continues to vest during it?
• What about carry that vests during the marriage but won’t be paid for years after separation?
• What about appreciation on carry that was separate property at the time of marriage?

A postnup can answer these questions definitively, avoiding expensive litigation later.

2. Valuation methodology

This is where most carry divorces go off the rails. Without a pre-agreed methodology, each side hires an expert who — surprise — reaches a conclusion favorable to their client. Common methodologies include:

• Net Asset Value (NAV): The fund’s current mark, adjusted for the carry waterfall. Simple but ignores illiquidity and future uncertainty.
• Discounted Cash Flow (DCF): Projects future distributions and discounts to present value. More sophisticated but requires assumptions about exit timing and returns.
• Secondary Market: What a willing buyer would pay on the secondary market. Most market-based but data can be limited.

Agreeing on methodology now — when you’re aligned — eliminates the most expensive argument in a carry divorce.

3. Illiquidity discount

Carry can’t be easily sold. How much should that reduce its value for division purposes? Industry standard ranges from 20–35%, but this is heavily negotiated in litigation. A postnup can set a specific discount or a formula for calculating one.

4. Distribution tracking vs. lump sum

Two approaches to dividing carry:

• Lump sum: Value the carry now, assign a dollar amount to the out-spouse, offset with other assets. Clean but requires agreement on present value.
• Distribution tracking (if-and-when): The out-spouse receives their community property share of each distribution as it arrives. No need to value carry today, but creates an ongoing financial relationship between ex-spouses.

Neither approach is inherently better. But choosing one while you’re still cooperative is far better than fighting about it later.

5. Information rights

What financial information does the out-spouse have the right to see? Options include:

• Annual K-1 tax documents (minimum — these are filed jointly anyway)
• Quarterly fund performance summaries
• Carry allocation letters
• Distribution notices

Many out-spouses discover during divorce that they have no idea what their carry is worth because they’ve never seen the relevant documents. A postnup can establish ongoing transparency that benefits both parties.

6. Trigger events

When does the postnup activate? Common triggers include:

• Filing for divorce or legal separation
• Death of either spouse
• Disability of the in-spouse
• Termination from the fund

The conversation most couples avoid

The biggest obstacle to a postnup isn’t legal complexity. It’s emotional resistance.

“If I ask for a postnup, they’ll think I’m planning to leave.”

“We don’t need that — we trust each other.”

“It feels like we’re inviting bad luck.”

These feelings are real and valid. But consider the reframe:

• You have homeowner’s insurance. That doesn’t mean you expect a fire.
• You have a will. That doesn’t mean you expect to die soon.
• You have life insurance. That doesn’t mean you’re planning to leave your family behind.

A postnup is financial planning. It’s responsible. It’s what thoughtful adults do when they have complex assets.

And here’s the part nobody says out loud: the postnup protects both spouses. The in-spouse gets certainty about their fund obligations. The out-spouse gets clarity about their rights. Both get protection from the worst-case scenario — an adversarial, expensive, emotionally devastating fight over an asset that neither fully understands in the moment.

How to start the conversation

The best approach is direct, calm, and framed around partnership:

1. Lead with “we”: “I’ve been learning about carried interest, and I think we should make some decisions together while we’re on the same team.”
2. Normalize it: “A lot of families with significant carry are doing this. It’s like estate planning — better to do it while things are good.”
3. Focus on protection: “This protects both of us. If something happened to you, I’d need to understand our carry position. If something happened to us, we’d both want a fair process.”
4. Don’t negotiate at the kitchen table: The conversation is “should we do this?” The details are for lawyers. Each spouse needs independent counsel.

What it costs

A well-drafted postnuptial agreement for a family with carried interest typically costs $8,000–$25,000 in combined legal fees (each spouse has their own attorney). Yes, that’s real money. But compared to the $200K–$500K that contested carry divorces routinely cost, it’s insurance with an extraordinary return.

The happily-married use case

Here’s what often gets lost: postnups aren’t just for couples who might divorce. They’re for couples who want to be intentional about their finances.

A postnup that addresses carried interest can also:

• Inform estate planning — how does carry pass to heirs?
• Clarify tax planning — how should carry distributions be treated for joint vs. individual taxes?
• Guide liquidity planning — if carry is the largest asset, how does the family manage cash flow around an illiquid position?
• Reduce anxiety — the out-spouse no longer has to wonder “what if?” because the answer is written down

The happily-married couple who signs a postnup isn’t planning for divorce. They’re planning for life.

Your next steps

1. Understand your carry position. Use the CarryForward calculator to get a directional estimate. You need to know the magnitude before you can plan around it.
2. Have the conversation. Pick a calm moment. Lead with partnership, not fear.
3. Find attorneys. Each spouse needs their own family law attorney with experience in high-asset cases involving alternative investments. Ask specifically about carried interest experience.
4. Gather documents. K-1s, carry allocation letters, and fund terms will inform the agreement. Our guide to fund documents explains what to look for.

The best time to make financial decisions is while you’re still in love. The second best time is today.