Postnuptial Agreement Lawyer

As a New York postnuptial agreement lawyer, I help married couples put their financial future in writing. A postnuptial agreement is a contract signed after the wedding that defines what is separate property, how marital assets and debts would be divided, and whether either spouse pays support if the marriage ends, giving both spouses clarity and protection on their own terms instead of the default rules a court would apply.

My firm, Eiges Law P.C., is a boutique New York practice devoted entirely to prenuptial and postnuptial agreements, backed by four decades of matrimonial experience. That single focus is the difference. Most firms treat marital agreements as one line item among dozens of practice areas, while I draft a document built around your life, your assets, and your goals. If you are considering an agreement before marriage instead, my New York prenuptial agreement services address that stage.

Protect your future and start the conversation. If you are married and want the clarity and protection a postnuptial agreement provides, I am ready to help you build an agreement that reflects your life and stands up when it matters. Schedule a confidential consultation today, and let me draft the quiet, complete protection you and your spouse deserve.

What Is a Postnuptial Agreement in New York?

A postnuptial agreement, sometimes called a postnup, is a contract between spouses who are already married. It sets out how property, income, debt, and spousal support would be handled during the marriage or in the event of divorce or death. New York recognizes these agreements under Domestic Relations Law, and couples use them to replace uncertainty with a clear, written understanding.

The core idea is simple. Without an agreement, New York’s equitable distribution rules decide who gets what if a marriage ends, and a judge applies statutory factors to your finances with limited room for your own priorities. A postnuptial agreement lets two people who trust each other write those terms themselves, quietly and in advance. The searches that bring most couples here, from “what is a postnuptial agreement” to “postnup,” all point to the same need: a private, enforceable framework that reflects the marriage you actually have.

A postnup can be as narrow or as comprehensive as a couple wants. Some agreements protect a single asset, such as a family business or an inheritance. Others cover the full financial picture, including real estate, retirement accounts, and future earnings. I tailor the scope to what matters most to each couple rather than forcing a one-size template onto a marriage.

What Is the Difference Between a Prenuptial and Postnuptial Agreement?

The only real difference is timing. A prenuptial agreement is signed before the wedding, and a postnuptial agreement is signed after the couple is already married. Both documents address the same subjects, separate property, marital property, and spousal support, and both are governed by the same section of New York’s Domestic Relations Law.

Timing does carry practical weight, though. A prenup is negotiated when neither person is yet bound to the other, so the leverage and the assets in question are often simpler. A postnup is negotiated inside an existing marriage, where property may already be commingled and where courts look closely to make sure neither spouse was pressured. That heightened scrutiny is exactly why the drafting quality matters, and why couples turn to me rather than a downloadable form. If your circumstances changed after the wedding, whether through a new business, an inheritance, or a career shift, a postnup is simply the tool for the stage of life you are in now. Couples still deciding between the two often start with my prenuptial agreement overview and move to a postnup when marriage is already underway.

Are Postnuptial Agreements Enforceable in New York?

Yes. New York courts enforce postnuptial agreements that meet the statutory requirements. Under Domestic Relations Law Section 236(B)(3), the agreement must be in writing, signed by both spouses, and acknowledged before a notary in the same formal manner required to record a deed. An agreement that follows these rules and is fair in substance is generally upheld.

New York’s highest court set the enforceability standard in Christian v. Christian, 42 N.Y.2d 63 (1977), holding that a marital agreement can be set aside where it is manifestly unfair to one spouse because of the other’s overreaching. In plain terms, the law asks two questions: was the process fair, and is the result fair. A postnup drafted with full financial disclosure, independent review, and no coercion clears both. The requirements a New York court looks for include:

A written agreement signed by both spouses, as required by Domestic Relations Law Section 236(B)(3).
Proper acknowledgment before a notary, in the form used to record a deed.
Full and honest disclosure of each spouse’s assets, income, and debts.
Terms that are not unconscionable at the time of signing or enforcement.
No fraud, duress, or overreaching in how the agreement was obtained.

Because the acknowledgment and disclosure rules are strict, small drafting or execution mistakes are a common reason agreements fail. I build each document to withstand that later challenge, which is the entire point of signing one.

What Can a New York Postnuptial Agreement Cover?

A postnuptial agreement can define separate versus marital property, decide how assets and debts are divided, waive or set spousal support, protect a business or professional practice, and safeguard inheritances and property intended for children from a prior relationship. It gives couples control over nearly every financial question a divorce or death would otherwise raise.

Under Domestic Relations Law Section 236(B)(5), New York divides marital property through equitable distribution, and Section 236(B)(6) governs maintenance, the state’s term for spousal support. A postnuptial agreement lets a couple write their own answers to both instead of leaving them to a judge. Common terms in a New York postnuptial agreement include:

Classifying specific assets as separate property, so they stay with one spouse.
Setting how marital property and appreciation would be divided under Domestic Relations Law Section 236(B)(5).
Establishing, limiting, or waiving spousal maintenance under Section 236(B)(6).
Protecting ownership and control of a business, professional practice, or partnership interest.
Preserving an inheritance or a gift so it is not later treated as marital property.
Allocating responsibility for debts, including debts one spouse brought into the marriage.
Confirming estate and inheritance arrangements for children from a previous relationship.

These terms work together. A business owner, for example, may pair a separate-property clause with a valuation method and a maintenance provision, so that a future dispute over the company never reaches the courtroom. I design those interlocking terms deliberately rather than pasting boilerplate.

What Can a Postnuptial Agreement Not Decide?

A postnuptial agreement cannot predetermine child custody or child support in a way that binds a court. New York decides custody by the best interests of the child under Domestic Relations Law Section 240, and child support follows the Child Support Standards Act. A court can always revisit those issues no matter what a postnup says.

This limit exists to protect children, who are not parties to the contract. Spouses can agree on their own money, but they cannot bargain away a child’s right to support or lock in a custody arrangement a judge has not reviewed. A well-drafted agreement stays firmly on the financial side of that line, so the enforceable portions are not put at risk by overreaching terms. I keep the document within these boundaries, which is another reason a generic template is a poor substitute for tailored drafting.

Why Would a Married Couple Sign a Postnuptial Agreement?

Couples sign postnuptial agreements when something changes after the wedding: one spouse starts or grows a business, an inheritance arrives, careers or incomes shift, a couple reconciles after a rough patch, or a blended family wants to protect children from a prior marriage. A postnup turns those new realities into a clear, agreed plan.

Far from a sign of doubt, a postnuptial agreement is often a sign of clarity, a private understanding that lets two people build a future on honest, agreed terms. Some of the most common reasons New York couples reach out include a spouse launching a company and wanting to shield it from a future dispute, a family inheritance that should stay in the bloodline, a stay-at-home parent who wants defined financial security, or a second marriage where each spouse arrives with assets and children to protect. In each case the goal is the same: replace an open question with a settled answer while the marriage is calm.

How Much Does a Postnuptial Agreement Cost in New York?

The cost of a New York postnuptial agreement depends on the complexity of the couple’s finances, how much negotiation is involved, and whether businesses or hard-to-value assets are in play. A straightforward agreement costs far less than a contested divorce, which is part of why couples view a postnup as protection rather than expense.

A simple postnup between spouses with clear, separate finances takes less drafting time than one involving a closely held business, multiple properties, or a complicated support structure. Independent review by separate counsel for each spouse, which strengthens enforceability, is a factor as well. During a confidential consultation, I explain the fee structure in advance so a couple can weigh the modest, predictable cost of an agreement against the far larger and unpredictable cost of litigating the same questions later.

How Do You Get a Postnuptial Agreement in New York?

Getting a postnuptial agreement in New York starts with a confidential consultation, followed by full financial disclosure from both spouses, negotiation of the terms, careful drafting, independent review, and a formal signing that is notarized in the manner Domestic Relations Law Section 236(B)(3) requires. Done properly, the process is calm and cooperative.

Each spouse should understand the agreement fully before signing, which is why independent legal advice matters and why courts view it favorably. The steps generally move from an honest exchange of financial information, to a draft that reflects the couple’s priorities, to a review period without pressure, and finally to execution with proper acknowledgment. Because a missed formality can undo the entire agreement, my value as your New York postnuptial agreement lawyer is in getting every step right the first time, not in complexity for its own sake.

Can a Postnuptial Agreement Be Challenged or Thrown Out?

Yes, a postnuptial agreement can be challenged, most often on the grounds that it was signed under duress, that one spouse hid or misrepresented assets, that there was no meaningful disclosure, or that the terms are unconscionable. New York courts scrutinize postnups closely, so an agreement built on fairness and full disclosure is far harder to overturn.

The most common attacks on a New York postnuptial agreement include:

Duress or coercion, meaning one spouse was pressured into signing.
Fraud or concealment, where assets, income, or debts were hidden or understated.
Lack of full financial disclosure by one or both spouses.
Unconscionability, where the terms are so one-sided they shock the conscience, the standard drawn from Christian v. Christian.
Defective execution, such as a missing or improper notarial acknowledgment under Domestic Relations Law Section 236(B)(3).

Every one of these risks is manageable at the drafting stage. Full disclosure defeats a fraud claim, independent counsel and an unhurried signing defeat a duress claim, and precise execution defeats a technical challenge. I draft with each of these future arguments in mind, so the agreement holds when it is needed most.

How Do I Handle New York Postnuptial Agreement Cases?

I handle every postnuptial agreement through a clear, staged process: a confidential consultation, full financial disclosure and strategy, careful drafting, review and negotiation between the spouses, and a properly executed signing. Each stage is built to produce an agreement that is fair, comprehensive, and enforceable.

It begins with a private conversation about the couple’s goals, assets, and concerns. From there, I guide a complete exchange of financial information, because disclosure is both a legal requirement and the foundation of a durable agreement. Drafting follows, with terms tailored to protect what each spouse cares about, whether that is a business, an inheritance, or long-term security. A fair and transparent review period lets both parties understand every provision, and the process closes with a signing that meets New York’s acknowledgment rules exactly. The result is a document drafted with the discretion, precision, and care that a marriage deserves.

Why Choose Eiges Law P.C. for Your Postnuptial Agreement?

Eiges Law P.C. is my New York firm, devoted entirely to prenuptial and postnuptial agreements, with four decades of matrimonial experience behind every document. This is not one service among many here; it is my whole practice, which means faster, sharper, and more thoughtfully drafted agreements without the noise of a general family law office.

When the stakes are personal and the details are private, couples want a New York postnuptial agreement lawyer who has seen these situations before and protects accordingly. My approach is respectful and non-adversarial, tailored to your relationship and your goals rather than treating an agreement as a fight to be won. Confidential consultations are available in office, by phone, or by video, so protecting your future can start with a single, low-pressure conversation.