How to Fill Out and File a New York Separation Agreement Form

A New York separation agreement is a written contract between spouses who intend to live apart while remaining legally married, covering how they will divide property and debts, handle support, and raise their children. It becomes binding the moment both spouses sign it before a notary public — no judge’s approval is needed.¹ Filing the signed agreement with the county clerk is optional and costs $5, but you have to file it if you later want to convert the separation into a no-fault divorce.²

What the Agreement Needs to Cover

At a minimum, a workable separation agreement addresses every piece of the marriage you are untangling:

Division of all marital property and confirmation of each spouse’s separate property.
Responsibility for every joint and individual debt.
Spousal maintenance: amount, duration, and when it ends.
Child custody, visitation schedules, and child support.
Health insurance for both spouses and any children.
Life insurance obligations, often used to secure support payments.
Whether the agreement merges into a future divorce judgment or survives as an independent contract.

Be specific when you describe anything you are dividing. “The Toyota” invites arguments; “the 2022 Toyota Camry, VIN 4T1BF1FK3NU123456” does not. Use the full legal description from the deed for real estate, and include account numbers and institution names for every financial account.

Marital Property vs. Separate Property

New York sorts property into two categories, and only marital property gets divided. Marital property is anything either spouse acquired from the wedding date until the agreement is signed or a divorce action is filed, regardless of whose name is on the title.¹ That covers the house, cars, furniture, cash in joint or individual accounts, and retirement contributions made during the marriage.

Separate property stays with the spouse who owns it: property owned before the marriage, inheritances, gifts from anyone other than your spouse, and personal-injury compensation (excluding lost wages). There is a catch. If you mix separate property with marital funds, like depositing an inheritance into a joint account, a court may treat part or all of it as marital property. Real estate is a partial exception; a separate-property down payment on the marital home usually remains traceable and returnable to the contributing spouse.

New York follows equitable distribution, meaning a court would divide marital property fairly based on the circumstances rather than automatically 50/50. In a separation agreement, you and your spouse can divide things however you want, but knowing the default helps each side judge whether a proposed split is reasonable.

Child Custody and Support

Address both legal custody (who makes major decisions about education, health care, and religion) and physical custody (where the child lives day-to-day). You can agree to sole custody for one parent, joint legal custody with one parent having primary physical custody, or a fully shared arrangement. Write the schedule in detail: weekdays, weekends, holidays, school breaks, and how you will handle changes. Vague language like “reasonable visitation” is an invitation for conflict.

Child support follows the Child Support Standards Act formula. Combined parental income is multiplied by a percentage based on the number of children, and the noncustodial parent pays that amount:³

One child: 17%
Two children: 25%
Three children: 29%
Four children: 31%
Five or more: at least 35%

Those percentages apply to combined parental income up to $193,000 as of March 2026. Above that cap, a court has discretion to apply the same percentages or set a different amount based on factors such as the children’s standard of living before the separation. Parents remain obligated to support a child until age 21.³ Your agreement can deviate from the CSSA formula, but if it does, both spouses must acknowledge the guideline amount and explain why a different figure is appropriate.

Spousal Maintenance

A separation agreement can set the amount, duration, and payment method for maintenance (alimony). Two legal constraints apply: the terms must be fair and reasonable when signed, and they cannot be unconscionable at the time a court later enters a final divorce judgment.¹ You also cannot agree to terms that would leave one spouse unable to support themselves and likely to need public assistance.⁴

For any separation agreement executed after 2018, maintenance payments are not tax-deductible for the paying spouse and are not treated as income for the receiving spouse. If you are modifying an older agreement, the original tax treatment carries over unless the modification expressly adopts the new rule.⁵

Protecting Yourself from Joint Debt

This is where many separation agreements quietly fail. Your agreement can assign a credit card balance to your spouse, but the creditor does not care about your agreement. If your name is on the account, the lender can still come after you for the full balance. The safest approach is to close all joint credit accounts before or immediately after signing and transfer balances to individual accounts. If one spouse is only an authorized user rather than a joint account holder, that spouse can simply be removed. Avoid co-signing any new loans during the separation period.

Signing and Notarizing

A separation agreement is only enforceable if three things are true: it is in writing, both spouses have signed it, and it has been acknowledged before a notary public in the same manner required to record a deed.¹ An oral agreement or a signed document without notarization can be thrown out in later court proceedings.

In practice, both spouses appear before a notary and sign the agreement there. The notary verifies each signer’s identity, watches them sign, and attaches a certificate of acknowledgment. New York caps the notary fee at $2 per person for a standard in-person acknowledgment. A remote online notarization session with an electronic notary can cost up to $25 per notarial act.⁶

The agreement becomes a binding contract the moment it is properly signed and notarized. You do not need a judge’s approval or any court filing for it to take effect.²

Filing with the County Clerk

Filing is optional. The agreement is already binding without it. Filing matters if you want to convert the separation into a no-fault divorce later, or if you need the family court to enforce the terms against a noncompliant spouse. File with the county clerk in the county where either spouse currently lives. The fee is $5.²

The filing date starts a clock. Under New York Domestic Relations Law Section 170(6), either spouse can file for a conversion divorce after living separately under the filed agreement for at least six months, provided the filing spouse has substantially complied with its terms. Rather than filing the full agreement, which becomes a public record, you can file a memorandum containing both spouses’ names and addresses, the marriage date, the date of the agreement, and the date it was notarized.⁷ The memorandum option keeps your financial details private while still satisfying the filing requirement.

Keep your own copies of the signed agreement and the clerk’s receipt. You will need them if you pursue a conversion divorce or have to enforce a term in court.

Health Insurance After Separation

If one spouse carries health insurance through an employer plan and the other is covered as a dependent, legal separation is a qualifying event under COBRA. The covered spouse and any dependent children are entitled to continue coverage for up to 36 months. To trigger that right, you or the covered spouse must notify the plan administrator within 60 days of the legal separation.⁸

COBRA premiums are typically the full cost of the plan, employer and employee shares combined, plus a 2% administrative fee. That is a steep jump from what the dependent spouse was paying before. Spell out in the separation agreement who pays for COBRA coverage. Leaving it out creates an expensive surprise.

Retirement Accounts and Social Security

Splitting an employer-sponsored plan like a 401(k) or pension requires a Qualified Domestic Relations Order, a court order sent to the plan administrator directing it to pay a share of the benefits to the non-participant spouse. Federal law prohibits a retirement plan from paying out to a separated spouse without one. The QDRO must include the names and addresses of both spouses, the plan name, and the dollar amount or percentage to be paid. A separate QDRO is needed for each plan.

IRAs do not need a QDRO. A transfer between spouses under a separation agreement or divorce decree is handled as a tax-free rollover, provided it moves directly from one IRA to another.

Social Security is a reason not to rush. If your marriage lasts at least 10 years before a divorce becomes final, a former spouse can claim Social Security benefits based on the other spouse’s earnings record.⁹ A separation agreement does not end the marriage, so time spent legally separated counts toward that 10-year mark. For couples who separated after seven or eight years of marriage, staying legally separated rather than rushing to divorce can preserve a valuable benefit.

Federal Tax Filing Status

A legal separation does not automatically change your federal filing status. Because you are still legally married, your options are married filing jointly or married filing separately, unless you qualify as “head of household” by maintaining a home for a dependent child and living apart from your spouse for the last six months of the tax year. IRS Publication 504 lays out the specific tests.¹⁰

For child-related tax benefits, the custodial parent (the one with whom the child spends the majority of nights) is generally entitled to claim the child as a dependent. If the custodial parent wants to release the claim to the noncustodial parent, they must sign IRS Form 8332 or a substantially similar statement, which the noncustodial parent attaches to their return each year they claim the exemption. A separation agreement alone does not satisfy the IRS requirement for agreements executed after 2008. The Form 8332 is mandatory.¹¹

When a Court Can Set the Agreement Aside

Separation agreements are presumed valid, but courts will reject or modify them in several situations:

Fraud or hidden assets. If one spouse concealed accounts, undervalued property, or lied about income, the agreement can be voided.
Duress or coercion. An agreement signed under threats, intimidation, or an unreasonably short review window is vulnerable.
Unconscionability. Even if the agreement was fair when signed, a court can refuse to enforce it if circumstances have changed so drastically that enforcement now would be unconscionable.¹
No independent counsel. When both spouses used the same attorney, or one spouse had none, courts scrutinize the agreement much more closely.

Child custody and support provisions are always subject to court review, regardless of what the agreement says, because a court’s primary concern is the child’s best interest. Neither parent can permanently contract away a child’s right to adequate support.

Merger vs. Survival

Your agreement should say whether it merges into a future divorce judgment or survives as an independent contract. The distinction matters more than most people realize. If the agreement merges, it loses its identity as a separate contract once the divorce is finalized, and a court can modify its terms under the same standards it applies to any divorce order. If the agreement survives, it remains enforceable as an independent contract after the divorce, and a court can only modify maintenance provisions upon a showing of extreme hardship. Many attorneys recommend survival language to protect negotiated terms, but the right choice depends on your circumstances.

1
New York State Senate. New York Code DOM 236 – Special Controlling Provisions; Prior Actions or Proceedings; New Actions or Proceedings
2
New York State Unified Court System. Legal Separation by Agreement of Parties
3
New York State Senate. New York Family Court Act 413 – Parents Duty to Support Child
4
New York State Senate. New York Code GOB 5-311 – Certain Agreements Between Husband and Wife
5
Internal Revenue Service. Topic No. 452, Alimony and Separate Maintenance
6
New York Department of State. Notary Public – Frequently Asked Questions
7
New York State Senate. New York Domestic Relations Law 170 – Action for Divorce
8
U.S. Department of Labor. FAQs on COBRA Continuation Health Coverage for Workers
9
Social Security Administration. More Info: If You Had a Prior Marriage
10
Internal Revenue Service. About Publication 504, Divorced or Separated Individuals
11
Internal Revenue Service. Form 8332, Release/Revocation of Release of Claim to Exemption for Child by Custodial Parent