Company

About

Written and maintained by AKT · Last updated: October 28, 2026

USA Alimony Calculator is a free, independent tool built to make one part of a difficult process a little clearer. Divorce and separation involve enough uncertainty. Understanding the general range of spousal support in your state should not require a paid consultation or an account.

AKT — software and website designer who has designed multiple websites, and the maintainer of this project — writes and maintains USA Alimony Calculator, keeps its calculation engine in step with each state’s family code, and last checked the citations against statutes current as of October 2026.

Methodology

Every estimate on this site comes from a single calculation engine with two layers of authority. The federal layer applies the 2017 Tax Cuts and Jobs Act (TCJA): for divorce agreements executed after December 31, 2018, alimony is no longer deductible to the payer and no longer taxable income to the recipient. The state layer follows each jurisdiction's own family code — for example, the 20% / $5,000 ceilings of Texas Family Code Chapter 5, the statutory maintenance formula of 750 ILCS 5/504(a-5) in Illinois, and New York's two-prong guideline under Domestic Relations Law § 236(B)(6-a). Where a state leaves the amount to judicial discretion, the engine reports a range built on the AAML guideline band (25%–35% of the payer's gross income minus 20% of the recipient's) rather than a single invented number.

Primary sources we rely on:

• IRS Publication 504, Divorce, Separation, and Alimony— federal tax treatment of alimony under the TCJA.
• Public Law 115-97 (Tax Cuts and Jobs Act of 2017)— the statute itself, amending IRC § 71 and § 215.
• Texas Family Code, Chapter 5 (Spousal Maintenance)— eligibility, need, and the 20% / $5,000 ceiling the Texas estimate encodes.
• RCW 26.09.090 (Washington dissolution — maintenance)— the factor-based statute behind Washington's range estimates.
• Cornell Legal Information Institute— cross-checking federal code and state statutes.

What the tool does

You select a state, enter the length of the marriage, and provide both parties' gross annual incomes. The calculator applies broad, publicly available assumptions about how alimony is commonly estimated and returns an illustrative monthly amount and duration. It is designed to give you a starting point for a conversation, not a final answer.

What the tool is not

This is not a law firm, and nothing on this site is legal advice. Alimony rules vary widely by state and can turn on factors a calculator cannot see, such as health, earning capacity, custody arrangements, standard of living, and judicial discretion. Always speak with a licensed family law attorney in your jurisdiction before making decisions.

Our privacy commitment

We do not store, log, track, or sell your financial data. The values you enter are used to calculate your estimate and are not retained afterward on our servers — your browser may hold them only in client-side sessionStorage to carry inputs across state pages, which is automatically cleared when the tab closes. There are no accounts and no data brokers, and the figures you enter are never sent to our analytics or advertising partners — Google Analytics and Google AdSense see only ordinary page traffic. You can read the details in ourPrivacy Policy.

Free, always

The calculator is free to use and requires no sign-up. Our goal is straightforward: give people a clear, transparent estimate without a paywall, a sales pitch, or a catch.

Get in touch

Have a question, correction, or suggestion? Visit ourcontact page— we would like to hear from you.