🇺🇸 USA · Family · 11 min read

Prenuptial Agreement Lawyer — Flat Fee Prenups and Postnups That Hold Up in Court

By the American Counsel legal team · Updated October 2026

A prenup is not a sign of distrust. It is a plan. A prenuptial agreement lawyer helps couples decide, calmly and in advance, how property and support will be handled if the marriage ends.

Prenups have become common for good reason. Couples marry later, often with homes, businesses, savings or children from earlier relationships. Moreover, a clear agreement can prevent a bitter, costly divorce later.

However, a prenup only helps if it is enforceable. Courts set aside agreements signed under pressure, without disclosure or with unfair terms. Therefore, this guide explains what makes a prenuptial or postnuptial agreement hold up, what it costs, and how to get one drafted for your state.

What a prenup can and cannot do

A prenup can define separate and marital property. It can protect a business, an inheritance or a home owned before marriage. Additionally, it can set or limit spousal support and allocate debts.

However, a prenup cannot set child support or custody in advance. Courts always decide those issues based on the children's needs at the time. Similarly, a prenup cannot include illegal or unconscionable terms.

Common protections

Business owners often protect company shares and future growth. Meanwhile, people with children from earlier relationships use prenups to preserve inheritances. In addition, high earners may set a predictable support formula. Each goal requires careful drafting for your state's law.

What makes a prenup enforceable

Most states follow similar principles. Many have adopted the Uniform Premarital Agreement Act or a variation of it. The key requirements are voluntariness, disclosure and fairness.

Full financial disclosure

Each spouse should disclose assets, debts and income. Disclosure schedules are attached to the agreement. Without them, a spouse may later claim they did not understand what they gave up. Consequently, disclosure is one of the strongest protections for enforceability.

Time to review

Signing days before the wedding invites challenges. Allow time for each partner to review the agreement, ideally with independent counsel. Some states have specific timing rules. For example, California requires at least seven days between receiving the final agreement and signing it.

Fair terms

Courts may refuse to enforce terms that are grossly unfair, especially if circumstances changed dramatically. Therefore, build in reasonable provisions, such as support that increases with the length of marriage.

Flat fee prenuptial agreement cost

Prenup pricing varies widely when billed hourly. A fixed fee gives you certainty. Our Prenuptial Agreement service starts at $199. The standard package tailors every clause to your situation. Meanwhile, the premium package adds attorney review and extra revision rounds.

High-asset agreements need more care. For example, business valuation, stock options and trusts require precise drafting. If your situation is complex, start with a high-asset divorce consultation, which also covers prenup strategy.

Independent advice

Each partner should ideally have their own attorney. One attorney cannot advise both sides. Therefore, the other partner may want a separate family law consultation to review the agreement.

Postnuptial agreements

A postnuptial agreement is signed after the wedding. It works much like a prenup. Couples sign postnups when circumstances change, such as starting a business, receiving an inheritance or reconciling after a separation.

Courts scrutinize postnups closely in some states, because spouses already owe each other duties. Consequently, full disclosure and fair terms matter even more. Our Postnuptial Agreement service starts at $199 and follows your state's requirements.

For more on protecting wealth in marriage, read our guide to high net worth divorce.

Prenups, estate plans and unmarried couples

A prenup works best alongside an estate plan. For instance, if your prenup waives spousal inheritance rights, your will and trust should reflect that. Our Estate Plan Bundle keeps both documents consistent.

Unmarried couples have options too. A cohabitation agreement sets out property rights and expenses while living together. As a result, both partners know where they stand if the relationship ends.

Our Prenuptial & Postnuptial Agreements services in the USA

Every service below has a fixed price, is prepared by a qualified attorney and is delivered online — wherever you are in the USA. Additionally, you can upload evidence, message your attorney and track progress from your secure client dashboard.

Prenuptial Agreement in the USA

A prenup meeting your state's UPAA requirements, with disclosure schedules.

Moreover, it is usually ready in 7 working days. Express delivery is also available. As a result, you can act before deadlines pass.

Order Prenuptial Agreement — from $199 See what's included →

Postnuptial Agreement in the USA

Define property rights during marriage.

Moreover, it is usually ready in 7 working days. Express delivery is also available. As a result, you can act before deadlines pass.

Order Postnuptial Agreement — from $199 See what's included →

Cohabitation Agreement in the USA

Protect unmarried partners who live together.

Moreover, it is usually ready in 5 working days. Express delivery is also available. As a result, you can act before deadlines pass.

Order Cohabitation Agreement — from $99 See what's included →

High-asset divorce consultation in the USA

A confidential 60-minute phone or video consultation with a licensed US attorney about a high-asset divorce — businesses, investments, real estate and retirement accounts. Get straight answers on your rights, options, risks and likely costs, and a clear plan for your next steps.

It includes 60-minute call with a licensed US attorney — phone, video or WhatsApp, upload documents beforehand so your attorney is prepared, your rights, options, risks and likely costs in plain English. Moreover, it is usually ready in 1 working day. Express delivery is also available. As a result, you can act before deadlines pass.

Order High-asset divorce consultation — $499 See what's included →

Family-law consultation — 60 min in the USA

A confidential 60-minute phone or video consultation with a licensed US attorney about your family-law matter. Get straight answers on your rights, options, risks and likely costs, and a clear plan for your next steps.

It includes 60-minute call with a licensed US attorney — phone, video or WhatsApp, upload documents beforehand so your attorney is prepared, your rights, options, risks and likely costs in plain English. Moreover, it is usually ready in 1 working day. Express delivery is also available. As a result, you can act before deadlines pass.

Order Family-law consultation — 60 min — $299 See what's included →

Business-law consultation in the USA

A confidential 45–60 minute phone or video consultation with a licensed US attorney about your business legal question. Get straight answers on your rights, options, risks and likely costs, and a clear plan for your next steps.

It includes 45–60 minute call with a licensed US attorney — phone, video or WhatsApp, upload documents beforehand so your attorney is prepared, your rights, options, risks and likely costs in plain English. Moreover, it is usually ready in 1 working day. Express delivery is also available. As a result, you can act before deadlines pass.

Order Business-law consultation — $299 See what's included →

Complete Estate Plan Bundle in the USA

Will or trust, durable POA, healthcare directive and HIPAA release.

Moreover, it is usually ready in 7 working days. Express delivery is also available. As a result, you can act before deadlines pass.

Order Complete Estate Plan Bundle — from $249 See what's included →

Prenuptial & Postnuptial Agreements services near you — every state we cover

Because everything is handled online, it makes no difference where you live. Nevertheless, the law does change from state to state, so every document is prepared for your local rules. Here are some of the places our clients come from most often.

Prenuptial & Postnuptial Agreements help in California

We prepare prenuptial & postnuptial agreements documents for California law and local court practice. Clients come to us from Los Angeles (near the Stanley Mosk Courthouse downtown), San Diego (near the Hall of Justice on West Broadway), San Francisco (near the Civic Center courthouse on McAllister Street). For example, see Prenuptial Agreement in Los Angeles, Prenuptial Agreement in San Diego, Prenuptial Agreement in San Francisco. Similarly, see Postnuptial Agreement in California.

Prenuptial & Postnuptial Agreements help in Texas

We prepare prenuptial & postnuptial agreements documents for Texas law and local court practice. Clients come to us from Houston (near the Harris County Civil Courthouse), Dallas (near the George L. Allen Sr. Courts Building), San Antonio (near the Bexar County Courthouse), Austin (near the Travis County Civil and Family Courts Facility). For example, see Prenuptial Agreement in Houston, Prenuptial Agreement in Dallas, Prenuptial Agreement in San Antonio, Prenuptial Agreement in Austin. Similarly, see Postnuptial Agreement in Texas.

Prenuptial & Postnuptial Agreements help in Florida

We prepare prenuptial & postnuptial agreements documents for Florida law and local court practice. Clients come to us from Miami (near the Miami-Dade County Courthouse on West Flagler Street), Orlando (near the Orange County Courthouse), Tampa (near the George E. Edgecomb Courthouse). For example, see Prenuptial Agreement in Miami, Prenuptial Agreement in Orlando, Prenuptial Agreement in Tampa. Similarly, see Postnuptial Agreement in Florida.

Prenuptial & Postnuptial Agreements help in New York

We prepare prenuptial & postnuptial agreements documents for New York law and local court practice. Clients come to us from New York City (near the New York County Courthouse at 60 Centre Street and the immigration court at 26 Federal Plaza), Brooklyn (near the Kings County Supreme Court on Adams Street). For example, see Prenuptial Agreement in New York City, Prenuptial Agreement in Brooklyn. Similarly, see Postnuptial Agreement in New York.

Prenuptial & Postnuptial Agreements help in Illinois

We prepare prenuptial & postnuptial agreements documents for Illinois law and local court practice. Clients come to us from Chicago (near the Richard J. Daley Center). For example, see Prenuptial Agreement in Chicago. Similarly, see Postnuptial Agreement in Illinois.

Prenuptial & Postnuptial Agreements help in Georgia

We prepare prenuptial & postnuptial agreements documents for Georgia law and local court practice. Clients come to us from Atlanta (near the Fulton County Courthouse). For example, see Prenuptial Agreement in Atlanta. Similarly, see Postnuptial Agreement in Georgia.

Prenuptial & Postnuptial Agreements help in Arizona

We prepare prenuptial & postnuptial agreements documents for Arizona law and local court practice. Clients come to us from Phoenix (near the Maricopa County Superior Court). For example, see Prenuptial Agreement in Phoenix. Similarly, see Postnuptial Agreement in Arizona.

Prenuptial & Postnuptial Agreements help in Pennsylvania

We prepare prenuptial & postnuptial agreements documents for Pennsylvania law and local court practice. Clients come to us from Philadelphia (near City Hall, home of the Court of Common Pleas). For example, see Prenuptial Agreement in Philadelphia. Similarly, see Postnuptial Agreement in Pennsylvania.

Prenuptial & Postnuptial Agreements help in Washington

We prepare prenuptial & postnuptial agreements documents for Washington law and local court practice. Clients come to us from Seattle (near the King County Courthouse). For example, see Prenuptial Agreement in Seattle. Similarly, see Postnuptial Agreement in Washington.

Prenuptial & Postnuptial Agreements help in Colorado

We prepare prenuptial & postnuptial agreements documents for Colorado law and local court practice. Clients come to us from Denver (near the Denver City and County Building). For example, see Prenuptial Agreement in Denver. Similarly, see Postnuptial Agreement in Colorado.

Prenuptial & Postnuptial Agreements help in Massachusetts

We prepare prenuptial & postnuptial agreements documents for Massachusetts law and local court practice. Clients come to us from Boston (near the Edward W. Brooke Courthouse). For example, see Prenuptial Agreement in Boston. Similarly, see Postnuptial Agreement in Massachusetts.

Prenuptial & Postnuptial Agreements help in Nevada

We prepare prenuptial & postnuptial agreements documents for Nevada law and local court practice. Clients come to us from Las Vegas (near the Regional Justice Center). For example, see Prenuptial Agreement in Las Vegas. Similarly, see Postnuptial Agreement in Nevada.

Prenuptial & Postnuptial Agreements help in New Jersey

We prepare prenuptial & postnuptial agreements documents for New Jersey law and local court practice. Clients come to us from Newark (near the Essex County Hall of Records). For example, see Prenuptial Agreement in Newark. Similarly, see Postnuptial Agreement in New Jersey.

Prenuptial & Postnuptial Agreements help in North Carolina

We prepare prenuptial & postnuptial agreements documents for North Carolina law and local court practice. Clients come to us from Charlotte (near the Mecklenburg County Courthouse). For example, see Prenuptial Agreement in Charlotte. Similarly, see Postnuptial Agreement in North Carolina.

We also help clients in Alabama, Alaska, Arkansas, Connecticut, Delaware, District of Columbia, Hawaii, Idaho, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Hampshire, New Mexico, North Dakota, Ohio, Oklahoma, Oregon, Rhode Island, South Carolina, South Dakota, Tennessee, Utah, Vermont, Virginia, West Virginia, Wisconsin, Wyoming. See every location we cover.

Prenuptial Agreement in every state

Alabama · Alaska · Arizona · Arkansas · California · Colorado · Connecticut · Delaware · District of Columbia · Florida · Georgia · Hawaii · Idaho · Illinois · Indiana · Iowa · Kansas · Kentucky · Louisiana · Maine · Maryland · Massachusetts · Michigan · Minnesota · Mississippi · Missouri · Montana · Nebraska · Nevada · New Hampshire · New Jersey · New Mexico · New York · North Carolina · North Dakota · Ohio · Oklahoma · Oregon · Pennsylvania · Rhode Island · South Carolina · South Dakota · Tennessee · Texas · Utah · Vermont · Virginia · Washington · West Virginia · Wisconsin · Wyoming

Frequently asked questions

How much does a flat fee prenuptial agreement cost?

Our attorney-drafted prenuptial agreements start at $199, with standard and premium packages for tailored terms and attorney review. Complex, high-asset agreements may need additional consultation.

When should we sign a prenup?

Well before the wedding. Allowing weeks for review and independent advice makes the agreement much harder to challenge. Some states, such as California, have specific waiting rules.

Can a prenup decide child custody?

No. Child custody and child support are always decided by the court based on the child's best interests at the time.

Is a postnuptial agreement enforceable?

Yes in most states, if it is voluntary, based on full disclosure and fair. Some states examine postnups more closely than prenups.

Do you draft prenups for every state?

Yes. We draft prenuptial and postnuptial agreements for all 50 states and Washington, D.C.

Contact American Counsel

📞 Phone / WhatsApp: +1 (217) 426-5403 · Chat on WhatsApp
✉ Email: support@american-counsel.com
🌐 Service area: online across all 50 US states and Washington, D.C.
🕑 Response: most enquiries answered the same working day

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This guide is general information, not legal advice for your situation. Every case is different — speak to a qualified attorney before you act.

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