How Divorce Works in the United States

There is no single "U.S. divorce law." Divorce in the United States is governed almost entirely by state law, which means the grounds, waiting periods, forms, property rules, and procedures can differ meaningfully depending on where you live. This guide explains what's generally true about how divorce works across the country — and, just as importantly, where you need to check your own state's rules rather than assume a national standard applies. It is general educational information, not legal advice, and it does not describe the law of any one state in detail. For that, see our companion guide to divorce law in Maryland.

What Divorce Legally Means

Divorce (sometimes called "dissolution of marriage") is the legal process that ends a valid marriage, restoring both spouses to single status and resolving the legal issues the marriage created — property and debt division, spousal support, and, when there are minor children, custody and child support. A divorce is finalized by a court judgment or decree; the marriage doesn't end simply because the spouses stop living together or agree informally to separate.

Why Divorce Law Is Primarily a State Matter

Family law, including marriage and divorce, has historically been treated as a power reserved to the states rather than the federal government. There is no federal divorce code and no federal divorce court. Instead, each of the 50 states (plus the District of Columbia and U.S. territories) has its own statutes governing who can get divorced, on what grounds, and how property, custody, and support are handled. This is why two people with similar circumstances can have very different divorce experiences depending solely on which state they filed in.

How Divorce Procedures Differ Between States

While the broad shape of a divorce case is similar nationwide — file, notify the other spouse, resolve the issues, get a judgment — states differ in real, sometimes significant ways, including:

• Whether the state requires a specific separation period before filing, and how long that period is
• Whether fault-based grounds (like adultery or cruelty) still exist alongside no-fault grounds, or whether fault has been eliminated entirely
• Whether marital property is divided under community property rules or equitable distribution rules
• The specific factors courts weigh for alimony and custody
• How child support is calculated (states use different guideline models)
• Court forms, filing fees, and local procedural rules

Because of these differences, a general description of "how divorce works" can only describe common patterns — not the specific rule that will apply to any individual case.

Residency Requirements

Every state requires that at least one spouse meet a minimum residency period in that state before filing for divorce there — otherwise the state's courts don't have authority (jurisdiction) to grant the divorce. The required length of residency varies by state, and some states also have separate, shorter residency rules when the grounds for divorce arose within that state. There is no nationwide residency rule; the specific period must be confirmed under the law of the state where you intend to file.

Grounds for Divorce: Fault vs. No-Fault

Historically, U.S. states required a spouse to prove "fault" — such as adultery, cruelty, desertion, or habitual substance abuse — to obtain a divorce. Over the second half of the 20th century and into the 21st, states progressively adopted no-fault divorce, which allows a court to grant a divorce based on grounds like an irretrievable breakdown of the marriage, irreconcilable differences, or a period of separation, without either spouse having to prove the other did something wrong.

Today, every state offers some form of no-fault divorce. Some states, like Maryland after its 2023 reform, have eliminated fault grounds entirely; other states still allow a spouse to choose either a no-fault or a fault-based ground, which can affect issues like alimony in some jurisdictions. Whether fault grounds still exist, and whether fault can affect property or support decisions, depends entirely on the state.

The Rise of No-Fault Divorce

California was the first state to adopt no-fault divorce, effective 1970, and other states followed over the following decades. The practical effect nationwide has been to make divorce more accessible without requiring spouses to litigate blame, though the pace and extent of each state's shift away from fault-based grounds has varied — some states adopted no-fault decades ago, while others (like Maryland) modernized their statutes far more recently.

The Exception: Covenant Marriage

A small number of states — Louisiana, Arizona, and Arkansas — offer an optional alternative called covenant marriage, which a couple can choose at the time they marry. Entering a covenant marriage typically requires premarital counseling and a signed declaration, and in exchange, the couple agrees to more limited grounds for divorce later — generally either a period of separation longer than the state's ordinary no-fault requirement, or proof of specific fault such as adultery, a felony conviction, abuse, or substance abuse. Covenant marriage is optional even in the states that offer it; couples in those states can still choose an ordinary marriage instead. It's a useful example of just how much a state can customize its own divorce rules, since almost every other state offers only the standard, non-covenant option.

Filing a Petition or Complaint

A divorce case begins when one spouse — called the petitioner or plaintiff, depending on the state — files a formal document (commonly called a Petition for Dissolution of Marriage or a Complaint for Divorce) with the appropriate court, almost always a state trial-level court with family law jurisdiction. The filing identifies the legal ground(s) for divorce and states what the filing spouse is asking the court to order.

Service and the Other Spouse's Response

After filing, the other spouse (the respondent or defendant) must be formally notified through service of process, following that state's specific rules for how legal papers must be delivered. The responding spouse then has a set deadline — which varies by state and by how service occurred — to file a formal response, admitting, denying, or raising issues in reply to the filing.

Temporary Orders While the Case Is Pending

While a divorce case is working through the court, either spouse can typically ask the court for temporary orders covering issues that can't wait until the final judgment — for example, who stays in the home, temporary child custody and support, or temporary spousal support. Temporary orders remain in effect only until the final judgment or a further court order changes them.

Dividing Property and Debt

States use one of two general frameworks for dividing marital property:

• Community property states (a minority of states, including California, Texas, and Arizona, among others) generally treat most property and debt acquired during the marriage as jointly owned, to be divided according to that state's specific community property rules.
• Equitable distribution states (the majority of states, including Maryland) divide marital property based on what the court finds is fair under the circumstances, which does not necessarily mean an equal 50/50 split.

In both systems, property owned before the marriage, and property received by one spouse individually through gift or inheritance, is often treated as separate (nonmarital) property and excluded from division — though the specific rules and exceptions vary by state.

Spousal Support / Alimony

Most states allow a court to order spousal support (alimony) from one spouse to the other, considering factors like the length of the marriage, each spouse's income and earning capacity, the standard of living during the marriage, and each spouse's age and health. States differ on how many types of alimony they recognize (temporary, rehabilitative, and indefinite/permanent are common categories), how support amounts are calculated, and how easily an award can later be modified.

Child Custody and Parenting Plans

Every state applies some version of a "best interests of the child" standard when deciding custody, though the specific statutory factors considered differ from state to state, and some states have codified detailed factor lists (as Maryland did in 2025) while others rely more heavily on judicial precedent. States commonly distinguish between legal custody (decision-making authority) and physical custody (where the child lives), each of which can be awarded solely to one parent or shared.

Jurisdiction over custody between states is governed by the Uniform Child Custody Jurisdiction and Enforcement Act (UCCJEA), adopted in some form by nearly every state, which generally gives a child's "home state" priority to make custody decisions and helps prevent competing custody orders from different states.

Child Support

All states use a statutory child support guideline to calculate support, but the underlying model differs: most states use an "income shares" model (support is based on both parents' combined income, similar to Maryland's approach), while a smaller number use a "percentage of income" model or a "Melson formula" variation. Federal law requires every state to have guidelines and to review and update them periodically, but the specific formula and dollar outcomes are set by each state.

Discovery

In a contested divorce, both spouses are typically required to exchange financial information and, when needed, use formal discovery tools (written questions, document requests, depositions) to obtain information the other spouse hasn't voluntarily disclosed. The specific disclosure forms and discovery rules are governed by each state's family law rules and civil procedure rules.

Negotiation

Many divorce issues are ultimately resolved through direct negotiation between the spouses (often through their attorneys) rather than a trial — reaching agreement on property, support, and custody without asking a judge to decide those issues.

Mediation

Mediation — a process where a neutral third party helps spouses reach their own agreement rather than having a judge impose one — is widely used across the country and, in many states or counties, required or strongly encouraged before a contested case can go to trial, particularly for custody disputes.

Settlement Agreements

When spouses reach agreement, it's typically documented in a marital settlement agreement (sometimes called a separation agreement), which the court can review and incorporate into the final divorce judgment, making its terms enforceable as a court order.

Court Hearings

Divorce cases typically involve at least one hearing, even when uncontested, at which the court confirms that the legal requirements are met before entering judgment. Contested cases can involve additional hearings on temporary orders, pretrial matters, and — if the parties don't settle — a trial where a judge (in most states, divorce cases are decided by a judge, not a jury) resolves the disputed issues.

The Final Divorce Judgment

The case ends with a final judgment or decree of divorce, which legally ends the marriage and formalizes the court's rulings, or the parties' agreement, on property, support, and custody. Once entered, the judgment is binding and enforceable, subject to each state's rules on appeal and later modification.

Post-Divorce Modifications

Custody, visitation/parenting time, and child support are generally modifiable after the divorce if a party can show a substantial or material change in circumstances, under standards set by state law. Property division is typically final once the judgment is entered, absent limited exceptions like fraud. Whether and how alimony can be modified depends on the type of support ordered and the specific state's law.

Appeals

A spouse who believes the trial court made a legal error can generally appeal to that state's appellate courts, following the state's civil appellate procedure and deadlines. Appeals in divorce cases focus on whether the law was correctly applied — not a second chance to reargue the facts from scratch.

Where Federal Law Intersects With Divorce

Even though divorce itself is governed by state law, several areas of federal law affect how a divorce plays out in practice:

• Retirement plans governed by ERISA (like a 401(k)) generally require a separate court order called a Qualified Domestic Relations Order (QDRO) to divide the account, on top of the state court's property division ruling.
• Federal tax law determines how alimony is taxed. Under the 2017 Tax Cuts and Jobs Act, for divorce or separation agreements executed after December 31, 2018, alimony is no longer deductible by the paying spouse or taxable income to the receiving spouse — a change from the rule that applied to earlier agreements.
• Social Security rules, set by federal law, allow a divorced spouse to potentially claim benefits based on an ex-spouse's earnings record if the marriage lasted at least 10 years, among other requirements.
• Federal bankruptcy law treats most domestic support obligations (child support and, in most cases, alimony) as non-dischargeable debts.
• Interstate custody and support enforcement — including the UCCJEA framework noted above and the federal Full Faith and Credit for Child Support Orders Act — helps ensure custody and support orders from one state are recognized and enforceable in another.

Why You Should Consult Your State's Official Court Resources

Because the specific rules — grounds, residency periods, property division framework, custody factors, and support formulas — are all set at the state level, the single most important step in understanding your own divorce is checking the official court or judiciary website for the state where you'll file. Most state court systems publish self-help centers, official forms, and current procedural guides, which reflect the actual current law far more reliably than general national articles (including this one) or outdated blog posts.

Example: Maryland

Maryland illustrates how much a single state's law can change: as recently as 2023, it eliminated "limited divorce" and cut its separation requirement from twelve months to six, and in 2025 it adopted a new statutory list of child custody factors. For a detailed look at how one state's divorce law actually works today, see our guide to divorce law in Maryland.