When Alimony Payments Begin and End

When alimony starts and stops depends on the divorce decree, state law, and the specific circumstances of your case

Alimony does not start automatically when you separate or file for divorce. A court must order it, or both spouses must agree to it in writing. The start date is set in the divorce decree or a separate alimony agreement — it is often the date the decree is signed, but can be backdated to the date of separation or set for a future date. The end date depends on what the court ordered: it might be a fixed number of years, when the receiving spouse remarries, when either spouse dies, or when the paying spouse reaches retirement age. Some states have formulas that calculate both the amount and duration based on the length of the marriage.

The rules vary significantly by state. Some states end alimony automatically if the receiving spouse cohabits with a new partner, even without remarriage. Others require the paying spouse to file a motion to modify or terminate. A few states have no time limit for long marriages. Understanding your state's rules and what your specific decree says is the only way to know your actual start and end dates.

Key Takeaways

• Alimony begins on the date written in the divorce decree, which is usually the date the judge signs it but can be set earlier or later by agreement.
• Alimony ends on a date or event specified in the decree — such as a set number of years, the receiving spouse's remarriage, or the paying spouse's retirement.
• Some states automatically terminate alimony if the receiving spouse cohabits with a new partner, while others require the paying spouse to file a motion to stop payments.
• The length of alimony is often tied to the length of the marriage under state guidelines, and longer marriages typically result in longer support periods.
• Either spouse can file a motion to modify the start date, end date, or amount if circumstances change significantly after the decree is signed.

How the divorce decree sets the start date

The start date for alimony is written into the divorce decree by the judge or agreed to by both spouses and then approved by the court. In most cases, this date is the same day the judge signs the final decree. However, the decree can specify a different date — for example, it might say alimony begins on the first day of the month following the decree, or it can be backdated to the date you and your spouse separated.

If you and your spouse reach a settlement agreement before trial, you can negotiate the start date as part of that agreement. Some people agree to have alimony begin when ready upon separation, even if the divorce is not finalized for months or years. Others agree to a delayed start date to give the paying spouse time to adjust finances. Once the judge approves the agreement and signs the decree, that start date becomes enforceable.

Temporary alimony (sometimes called spousal support or maintenance during the divorce) can begin even earlier — while the divorce is still pending. A judge may order temporary alimony at an early hearing if one spouse requests it and shows financial need. This temporary order ends when the final decree is signed, at which point permanent or long-term alimony (if ordered) takes over on the date specified in the final decree.

End dates set by the divorce decree

The decree must state when alimony ends, or it will continue indefinitely. Common end dates include a specific date (for example, "alimony terminates on December 31, 2035"), a duration in years (for example, "alimony continues for five years"), or an event (for example, "alimony terminates upon the death of either party or the remarriage of the receiving spouse").

Many states tie the duration to the length of the marriage. A marriage of fewer than five years might result in alimony lasting one to two years. A marriage of ten to fifteen years might result in alimony lasting five to seven years. A marriage of twenty years or more might result in alimony with no set end date, or lasting until retirement. These are guidelines, not rules — judges can order longer or shorter periods based on the specific facts of the case.

Some decrees include a retirement clause: alimony ends or is reduced when the paying spouse reaches a certain age, such as 65 or 67, or becomes may be able to access for Social Security. Others include a cohabitation clause: alimony ends if the receiving spouse moves in with a new partner, even if they do not marry. The exact language in your decree determines what actually triggers the end.

How remarriage and cohabitation affect alimony

Remarriage of the receiving spouse terminates alimony in all states. The paying spouse does not have to file a motion — alimony stops automatically by law on the date of the remarriage. However, the paying spouse should notify the court or the agency handling payments to may support the payments actually stop, because the system does not always update automatically.

Cohabitation is treated differently depending on your state. Some states have a cohabitation clause in the law itself: if the receiving spouse lives with a new partner in a romantic relationship for a set period (often 90 days or six months), alimony terminates automatically or can be terminated by the paying spouse filing a motion. Other states do not recognize cohabitation as grounds for termination unless the decree specifically says so. A few states require the paying spouse to prove that cohabitation has reduced the receiving spouse's financial need before a judge will terminate alimony.

If your decree does not mention cohabitation, and your state law does not automatically terminate alimony for cohabitation, the paying spouse would need to file a motion to modify or terminate based on changed circumstances — such as the receiving spouse's increased income or reduced expenses due to living with someone else.

Modifying the start or end date after the decree

Either spouse can ask the court to change the start date, end date, or duration of alimony if circumstances have changed significantly since the decree was signed. This is called a motion to modify. Common reasons include a substantial change in income, job loss, serious illness, or retirement.

To file a motion to modify, you typically submit a written request to the court that issued the decree, along with documentation of the changed circumstances (such as recent pay stubs, a termination letter, or medical records). The other spouse has a chance to respond. If you both agree to the change, the judge usually approves it quickly. If you disagree, the judge holds a hearing and decides whether the change is justified.

A change in the start date is less common than a change in the end date or amount, but it can happen. For example, if alimony was supposed to begin on a date that has already passed, and the paying spouse did not make those payments, the receiving spouse might file a motion asking the court to clarify that the obligation is retroactive and demand back payments. Conversely, if the paying spouse has experienced a sudden financial hardship, they might ask the court to delay the start date, though courts are generally reluctant to grant this unless the hardship is severe and documented.

State-specific rules for alimony duration

Several states have adopted guidelines that tie alimony duration to marriage length. These guidelines are not mandatory — judges can order different durations — but they provide a starting point. For example, some states use a formula such as: marriages under five years result in alimony lasting 30 to 50 percent of the marriage length; marriages of five to ten years result in alimony lasting 50 to 75 percent of the marriage length; and marriages over ten years may result in alimony with no set end date.

Other states leave duration entirely to the judge's discretion, considering factors such as the age and health of both spouses, the standard of living during the marriage, the earning capacity of each spouse, and the contributions each spouse made to the marriage (including homemaking and child-rearing). A few states have abolished permanent alimony altogether and set a maximum duration regardless of marriage length.

Because these rules vary, the same marriage length can result in very different alimony durations depending on which state the divorce occurred in. If you are considering divorce or have already received a decree, reviewing your state's alimony statutes or consulting a local family law resource will show you what duration is typical for your situation.

What happens if alimony payments are not made on time

If the paying spouse does not make a payment by the due date, they are in arrears (behind on payments). The receiving spouse can file a motion for contempt of court or a motion to enforce the alimony order. The court can then order the paying spouse to pay the back amount plus interest, attorney fees, and court costs. In some cases, the court can hold the paying spouse in contempt, which can result in fines or jail time.

Many states have a wage garnishment process for alimony, similar to child support. If payments fall behind, the court can order the paying spouse's employer to withhold alimony directly from their paycheck. Some states also allow the receiving spouse to place a lien on the paying spouse's property or seize tax refunds to satisfy arrears.

If the paying spouse claims they cannot afford the payments, they can file a motion to modify the alimony order based on changed circumstances. However, straightforward missing payments without filing a motion does not stop the obligation — it only creates arrears that accumulate over time.

Frequently Asked Questions

Does alimony start when ready when I file for divorce?

No. Alimony does not begin until a court orders it or both spouses agree to it in writing. Temporary alimony can be ordered during the divorce process if one spouse requests it, but permanent or long-term alimony begins on the date specified in the final divorce decree.

Can alimony be backdated to the date we separated?

Yes, if both spouses agree or if the judge orders it. The decree can specify that alimony begins on the separation date, even if the divorce is not finalized until months or years later. This means the paying spouse would owe back payments from the separation date forward.

What if my ex remarries — does alimony stop automatically?

Yes, in all states. Alimony terminates automatically upon the remarriage of the receiving spouse. However, you should notify the court or the payment processor to may support the payments actually stop, because the system does not always update on its own.

Can I stop paying alimony if my ex is living with someone new?

It depends on your state and what your decree says. Some states automatically terminate alimony if the receiving spouse cohabits with a new partner. Others require you to file a motion to modify based on changed circumstances. Check your state's law and your specific decree to know whether cohabitation is grounds for termination.

Can we change the end date of alimony after the divorce is final?

Yes, either spouse can file a motion to modify the end date if circumstances have changed significantly — such as a major change in income, job loss, serious illness, or retirement. The court will review the request and decide whether to approve the change.