Starting a business before the wedding feels like natural protection. The company exists, it has your name on it, and you built it before your spouse was part of the picture. Many business owners in Suffolk County carry that assumption into an engagement without ever testing it. It turns out to be only half true, and the half that’s missing is where most of the financial exposure lives.
New York law does treat property acquired before marriage as separate property, shielding the original value of the business from equitable distribution. But what the law doesn’t automatically protect is the business’s growth during the marriage. That distinction matters far more than most owners realize, and it’s the reason CPAs, other attorneys, and business owners regularly refer clients to us when a prenuptial agreement is part of the planning conversation. Our founding attorney, Steven P. Kuhn, has worked with more than 3,000 family law clients across Suffolk County, including business owners, physicians, and CPAs who need more than a general overview of how prenups work.
Why Pre-Marital Ownership Doesn’t Protect Everything
New York Domestic Relations Law 236(B)(1)(d) classifies property acquired before marriage as separate property. That baseline protection is real. The starting value of the business you bring into the marriage is yours. What the statute also recognizes, though, is that appreciation of separate property during the marriage can be pulled into the marital estate under certain conditions.
The New York Court of Appeals laid out the framework in Price v. Price, 69 N.Y.2d 8 (1986). Under that analysis, the non-titled spouse must show three things: the business increased in value during the marriage, that increase resulted at least in part from the titled owner’s efforts, and those efforts were aided directly or indirectly by the other spouse. That last element is more flexible than it sounds. A spouse who managed the household, raised children, or handled personal finances while the owner focused on growing the company can satisfy it.
The test turns on whether the appreciation was passive or active. Passive appreciation happens through forces outside the owner’s control: rising commercial real estate values, favorable market conditions, or industry-wide revenue increases. Courts treat passive appreciation as separate property. Active appreciation, which results from the owner’s own labor, strategy, and decisions, is what courts can distribute to the other spouse. If your company grew because of what you did every day at work, a court may treat a portion of that growth as marital property even though you owned the business entirely before the marriage began.
What the Agreement Needs to Say About Growth
The Appellate Division in Strong v. Dubin, 75 A.D.3d 66 (1st Dept. 2010), made clear that an intent to override the default equitable distribution rules must be evidenced in the written agreement itself. Assuming that general language protecting your “premarital assets” will cover future appreciation is a mistake. That language protects the starting value. It says nothing about what happens to the increase.
A well-drafted agreement addresses business growth in specific terms:
- Future appreciation clause: Explicitly states that any increase in the business’s value during the marriage, whether from active or passive sources, remains the owner’s separate property.
- After-acquired property clause: Defines how a new business started during the marriage, or a new venture built on top of an existing company, will be classified and valued at divorce.
- Buyout provision: Sets a fixed dollar amount or percentage the other spouse would receive in exchange for waiving any ongoing interest in the business, preserving the owner’s full operational control without leaving the value open-ended.
Without language covering these scenarios, what looks like a complete agreement can still leave the business’s future growth exposed. The spouse who held the household together while the company doubled in size has a credible argument under Price v. Price unless the agreement addresses that scenario directly.
Coordinating the Prenup with Your Business Documents
A prenuptial agreement for a business owner doesn’t exist in isolation. It sits alongside LLC operating agreements, shareholder agreements, and partnership documents that may already define what happens to an owner’s interest on major life events. Those documents and the prenup need to tell the same story. When they don’t, the conflict creates exactly the kind of dispute the prenup was supposed to prevent.
Valuation Method & Date
New York courts use three primary approaches to value a business in a divorce. The income approach calculates value based on the business’s earnings capacity and projected cash flow, making it the typical fit for a service-based company that runs largely on the owner’s efforts. The market approach compares the business to recent sales of similar companies, which works best for businesses with an established transaction market. The asset approach uses the net value of the company’s tangible and intangible assets, often applied to holding companies or asset-intensive businesses. The prenup should identify which method governs and set a reference valuation date, both for the starting value and for any agreed buyout formula. Leaving the method undefined invites a valuation dispute at exactly the wrong moment.
Entity Documents & Succession Planning
If your LLC operating agreement is silent on what happens to a member’s interest if the member divorces, a court could treat the interest as a marital asset subject to transfer regardless of what your prenup says. Aligning both documents closes that gap. For family-owned or multi-generation businesses, the prenup can address voting rights, management authority, and ownership succession separately from the divorce-related financial terms. Those succession issues may eventually intersect with the Suffolk County Surrogate’s Court if the business passes through an estate, making it worth building consistency across all the relevant documents now rather than sorting out contradictions later.
Keeping the Agreement Enforceable
A prenuptial agreement in New York must be in writing, signed by both parties, and acknowledged in the same manner required for recording a deed, meaning a notary alone isn’t enough. The acknowledgment requirement has tripped up agreements drafted without guidance from attorneys who handle these regularly.
New York doesn’t require formal financial disclosure for a prenup to be valid. That said, full and honest disclosure of assets, including a reasonable estimate of the business’s current value, provides significant protection against a later challenge on grounds of fraud or unconscionability. Unconscionability refers to an agreement so one-sided or procured under such unfair conditions that a court would refuse to enforce it. A spouse who can show they signed without any meaningful understanding of what they were waiving has a stronger argument when disclosure was withheld.
Both parties should have separate legal representation and adequate time to review the agreement before the wedding. Courts look closely at the circumstances surrounding the signing. An agreement presented two weeks before the ceremony, without time for independent review, is the kind of scenario courts point to when finding duress or overreaching. The earlier in the engagement the conversation starts, the more clearly the agreement was entered into freely.
Starting the Conversation at the Right Time
The protection a prenuptial agreement provides for a business owner depends almost entirely on what the agreement actually says, not just on the fact that one exists. Pre-marital ownership protects the starting value. It doesn’t automatically protect what the company becomes. Addressing future appreciation, defining the valuation method, and aligning the agreement with the business’s own governing documents are the steps that close the gap between a prenup that looks complete and one that actually holds up.
That work is best done early, while there’s room to draft carefully and both parties can review without the pressure of an upcoming wedding date. If you’re a Suffolk County business owner who wants to protect what you’ve built, Kuhn & Sandler, PLLC is ready to walk through your situation. Call us at (631) 629-6874 to start that conversation.