Suing for alimony after divorce is possible in some situations and nearly impossible in others, and the deciding factor is the language of your final divorce decree. If the court reserved jurisdiction over spousal support, you can come back and ask for an award later. If both spouses waived alimony, your options are narrow. And if you already have an alimony order, most states will modify it when you can prove a substantial change in your financial life since the order was entered.
Start With Your Divorce Decree
Before anything else, pull the decree and read the spousal support section. That document is a court order, and it controls what is legally available to you now. The language will fall into one of three categories.
The first is an explicit waiver: both spouses formally gave up the right to seek alimony, and a judge approved it. The second is a specific award with a set amount and schedule, which may or may not be modifiable depending on the type of alimony and the rest of the order. The third is a reservation of jurisdiction, where the court kept its authority to address alimony later even though none was awarded at the time.
Asking for Alimony When None Was Ordered
If the Court Reserved Jurisdiction
A reservation of jurisdiction is a deliberate choice by the judge, signaling that the court saw a possible future need for support even though the circumstances at the time did not justify an award. Judges sometimes reserve jurisdiction when a spouse is in job training, recovering from an illness, or otherwise in transition. Some courts accomplish the same thing by awarding a nominal amount, sometimes as little as one dollar per year, specifically to keep the door open for a real award later.
If your decree includes either a reservation of jurisdiction or a nominal award, you can petition the court to establish a meaningful alimony order. You will need to show that circumstances have changed since the divorce and that you now have a genuine need for support the other spouse can provide.
If Both Spouses Waived Alimony
A clear waiver is very hard to undo. Courts treat these waivers as final, and without a reservation of jurisdiction the court’s power to create a new support obligation generally ended when the divorce was finalized.
The narrow exceptions involve attacking the waiver itself. If you can show you agreed to it because of fraud, duress, or coercion by your former spouse, a court may set it aside. Some courts will also look at whether the waiver was unconscionable, meaning so unfair that enforcing it would shock the conscience. The burden falls squarely on the person trying to overturn the waiver, and judges set a high bar. A waiver you regret is not the same as a waiver obtained through deception. If you think one of these exceptions applies, this is not a do-it-yourself matter; find a family law attorney who handles post-judgment work.
Modifying an Existing Alimony Order
The Substantial Change Standard
Changing an existing award is the most common post-divorce spousal support action, and most states allow it. You must prove a substantial and material change in circumstances since the last order. The standard exists to keep people from returning to court over minor fluctuations. The change has to be significant, and in many states it must also have been unforeseeable when the original order was entered.
Changes courts commonly find sufficient include:
- An involuntary job loss or a significant, lasting pay cut
- A serious illness or disability that affects either spouse’s ability to work
- A major increase in the recipient’s or the payer’s income
- The recipient’s cohabitation with a new partner in a financially supportive relationship
- Retirement at a reasonable age, particularly when it was foreseeable at the time of divorce
Voluntary Changes Don’t Count
Many modification attempts fail here. Courts look closely at whether a financial change was voluntary or involuntary. If you quit your job without a compelling reason, took early retirement to reduce your income, or turned down reasonable employment, a judge is unlikely to lower your obligation on that basis. Courts can impute income to a spouse who is voluntarily underemployed or unemployed, calculating support based on what you could be earning rather than what you actually earn. The question is bad faith: a genuine life event, or a strategic move to manipulate support?
The same logic runs the other direction. If you receive alimony but deliberately avoid work or turn down opportunities, a court can reduce your award based on the income you should be earning.
Automatic Adjustments Through a COLA Clause
Some orders include a cost-of-living adjustment clause that increases payments automatically, tied to a published inflation index like the Consumer Price Index. If your order has one, the payment adjusts on the schedule the order sets without anyone filing a petition. A valid clause usually specifies the effective date of each adjustment and the index used. The paying spouse can still contest an adjustment by filing a motion before it takes effect, and either party can still seek a formal modification based on changed circumstances.
How the Type of Alimony Affects What You Can Change
Modification rules differ by the type of alimony you were awarded, and the label states use varies. Permanent alimony, meant to continue until remarriage or the death of either spouse, is generally modifiable. Rehabilitative alimony, which supports a lower-earning spouse while they gain education or work experience, may be modifiable if you can show the original plan is no longer realistic. Durational alimony runs for a set period tied to the length of the marriage and ends when the term expires.
Lump-sum alimony is the outlier. A fixed total, paid at once or in installments, is treated as a final property settlement in most states, and no court will reopen it based on changed circumstances. If you are not sure which type your decree established, the specific language of the order controls, not the label.
When Alimony Ends on Its Own
Certain events terminate alimony without anyone filing a petition, though the specifics vary by state.
The recipient’s remarriage ends the obligation in most states. Some states require the payer to file a motion confirming termination; others treat remarriage as an automatic cutoff. A few states draw distinctions by type of alimony. Rehabilitative alimony, for example, may survive remarriage in some states because its purpose is tied to a specific goal rather than ongoing financial need.
The death of either spouse typically ends alimony as well, unless the decree or a separate agreement provides otherwise.
Cohabitation is the most contested trigger. If the recipient moves in with a new partner in a relationship resembling a marriage, courts in many states will reduce or terminate the award. Proving cohabitation usually requires evidence of shared finances, shared living expenses, and a relationship recognized by family and friends. Overnight visits alone rarely meet the bar. The paying spouse typically bears the burden, and courts look at the full picture rather than any single factor.
Filing a Post-Divorce Alimony Petition
The process starts with a petition filed in the court that handled your original divorce, typically called something like a Petition to Modify Spousal Support or a Motion for Alimony depending on the state. It must lay out the specific change in circumstances and be supported by documentation.
After filing, you have to formally notify your former spouse through service of process, usually by a sheriff’s deputy or a private process server. Handing the papers to your ex or sending a text does not count. Filing fees for modification petitions vary by state but generally run between $50 and $300. Process server fees add another cost, typically from $35 to several hundred dollars depending on how difficult service turns out to be.
Both parties will usually exchange updated financial disclosures covering income, expenses, assets, and debts. The court may order mediation before scheduling a hearing. If mediation fails or is not required in your jurisdiction, a judge reviews the evidence and rules.
One timing detail matters more than most people expect. In most states, a modification takes effect from the date the petition is filed, not the date circumstances actually changed. If you lost your job in January but did not file until June, you likely still owe the original amount through May. Courts rarely backdate modifications to before the filing.
A Quick Word on Taxes
Federal tax treatment turns on when the agreement was executed. For divorce or separation agreements executed after December 31, 2018, the paying spouse cannot deduct alimony, and the recipient does not report it as income.1Internal Revenue Service. Topic No. 452, Alimony and Separate Maintenance For agreements finalized on or before that date, the older rules still apply: the payer deducts, the recipient includes it in income. If you modify a pre-2019 agreement, the newer treatment kicks in only if the modification expressly says so.2Internal Revenue Service. Divorce or Separation May Have an Effect on Taxes If you are negotiating a change to an older order, both sides should price the tax consequences into any new number. A figure that looked fair when it was deductible can feel very different when it is not.