Alimony Calculator New York - Spousal Support Estimator

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Published June 4, 2026 • By DocketMath Team

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This article is for informational purposes only and does not constitute legal advice. Laws change frequently — verify all citations with current official sources.

Overview

New York spousal support (alimony/maintenance) is authorized under N.Y. Dom. Rel. Law § 236(B)(5-a) & (6) and, for child-related support, also ties into the statutory framework in N.Y. Dom. Rel. Law § 240(1-b) (CSSA).

If you’re trying to estimate what a court might order, the practical starting point is understanding that New York uses statutory formulas and policy factors—then applies them to the facts you enter: income levels, child-related inputs (such as parenting time/custody), and maintenance purpose/factor assumptions.

DocketMath’s Alimony/Child Support Estimator is designed to help you model outcomes using the statutory structure. It won’t replace a judge’s order, but it can show how sensitive the estimate is to common inputs (income, how child support is allocated under CSSA inputs, and basic maintenance modeling assumptions).

What you can estimate with DocketMath

Spousal support (maintenance): a range/estimate based on your inputs
Child support components: using the CSSA framework
Combined monthly support picture: so you can see interaction effects when maintenance and child support are considered together in the same scenario

Typical inputs you’ll want ready

Each party’s gross income (and any recurring adjustments you plan to reflect consistently)
Children involved: number of children (and relevant ages, if requested by the calculator)
Parenting time / custody arrangement: used to model the child support allocation
Any known maintenance-related factors you plan to reflect in the inputs you select (to the extent the calculator provides factor fields)

Note: DocketMath’s calculator is an estimator. Real-world outcomes depend on evidence, documentation, and how the court applies the statutory factors to your specific circumstances.

Limitation period

There is no single “alimony limitation period” in the sense of “you have X years from marriage to request maintenance.” Instead, New York’s maintenance framework is governed by the Domestic Relations Law provisions that authorize awards in the context of divorce or separation.

For planning purposes, the key idea is: maintenance is typically sought as part of a divorce or separation proceeding, not as a stand-alone claim you can freely pursue outside the procedural context.

Default period (general framework)

You may see a “default” period described in calculators or summary content. For this page, treat that as general rather than claim-type-specific. In other words, the general/default period is used because no claim-type-specific sub-rule was found for the limitation-period discussion here.

If you need a limitation-period analysis for a particular procedural posture (for example, timing related to enforcement or modification after a judgment), you should match the request type to the governing procedure—because the timing can depend on what you’re asking the court to do and when, not just the label “alimony.”

Key exceptions

Even when maintenance is authorized, outcomes can differ sharply based on exceptions, supporting facts, and how the court applies the statutory framework. The calculator can’t “know” your exceptions unless you encode them through the inputs you enter—so use these points to decide what to enter carefully.

1) Maintenance is authorized in divorce/separation—timing and posture matter

New York courts may award maintenance “upon a divorce or separation of the parties” under N.Y. Dom. Rel. Law § 236(B)(5-a) & (6). That means the statutory pathway is not just “who has more income,” but whether the request is tied to the divorce/separation proceeding.

What this changes for your estimate

If your goal is to model the support structure in a divorce judgment, enter inputs assuming support is set in that judgment.
If you are thinking about later enforcement/modification, your modeling assumptions may need to change, because the procedural posture affects what the court considers and when.

2) Child support (CSSA) can affect the overall package

The CSSA framework in N.Y. Dom. Rel. Law § 240(1-b) drives child-related calculations. Because combined obligations often appear together in support orders, your spousal maintenance estimate can feel higher or lower depending on how child support is modeled in your scenario.

What this changes for your estimate

Enter accurate child counts and parenting-time/custody inputs.
If you change child support-related inputs, your combined monthly estimate changes—sometimes meaningfully.

3) Interaction between maintenance and child support is often practical, not conceptual

Courts treat maintenance and child support as separate statutory concepts, but orders can be structured together so that total monthly burdens interact.

Pitfall: If you model maintenance as if there were no CSSA obligation, you may get a number that looks “reasonable” in isolation—but your real-world monthly obligation may be different once CSSA-based child support is included under N.Y. Dom. Rel. Law § 240(1-b).

Statute citation

New York’s authority for spousal maintenance and child support is grounded in the following provisions:

Maintenance (alimony/spousal support): N.Y. Dom. Rel. Law § 236(B)(5-a) & (6)
These subsections authorize courts, upon divorce or separation, to award support to one spouse under the maintenance framework.
Child support (CSSA): N.Y. Dom. Rel. Law § 240(1-b)
This provides the CSSA statutory structure for child support.

Statutory text source (New York Senate):
https://wwwwww.nysenate.gov/legislation/laws/DOM/240

Use the calculator

Use DocketMath’s Alimony/Child Support Estimator to simulate different scenarios quickly: /tools/alimony-child-support. This tool helps you sanity-check outcomes before you spend time gathering documents for filings.

Step-by-step workflow

Open the tool: go to /tools/alimony-child-support
Enter incomes: provide gross monthly amounts for each party (keep your assumptions consistent across runs)
Enter child details: number of children and parenting-time/custody inputs used for CSSA modeling
Review the estimate: observe how monthly numbers change after each input update
Run “what-if” iterations: test sensitivity to key variables (income changes, parenting time changes, and other child-related inputs)

Inputs that most change your output

Start with these, then refine as you get better information:

My income (monthly gross)
Other party’s income (monthly gross)
Number of children
Parenting time / custody allocation inputs
Any recurring income items you’re confident are documented
Confirmation that your child support inputs match the parenting arrangement you’re modeling

How to interpret results responsibly

Treat the output as a model, not a promise of what a judge will award.
If your numbers shift significantly when you adjust one input (for example, one party’s income), that’s a sign the final order could also be evidence-driven.
When your scenario includes both maintenance and child support, focus on the combined monthly figure to understand total obligation.

Gentle disclaimer: Don’t treat the calculator as legal advice or as a substitute for a full review of your facts with a qualified professional. The statutory framework in N.Y. Dom. Rel. Law § 236(B)(5-a) & (6) and § 240(1-b) depends heavily on the underlying facts and the procedural posture of the case.