Alimony in New Hampshire: Who Qualifies and How Long It Lasts

In New Hampshire, either spouse in a divorce, legal separation, or annulment case can ask the court for alimony — but the request has to be made on time, and the amount and length of "term" alimony follow a formula tied to the length of the marriage and the gap between the spouses' incomes. New Hampshire law recognizes two distinct kinds of alimony, each with its own rules, deadlines, and limits. Getting the type and the timing right matters as much as the dollar amount.

Two kinds of alimony in New Hampshire

New Hampshire law splits alimony into two categories, and they work very differently:

• Term alimony — ongoing periodic payments meant to let both spouses maintain a reasonable standard of living after the divorce.
• Reimbursement alimony — a payment meant to compensate one spouse for an economic or non-economic contribution they made to the other spouse's financial resources (for example, contributions that helped build the other spouse's earning capacity or assets).

Either spouse can request alimony, either by agreement between the parties or, if there's no agreement, by asking the court through a petition or motion.

How much term alimony costs

For term alimony, New Hampshire uses a formula based on the difference between the spouses' gross incomes. The amount the court orders is the lesser of:

• the receiving spouse's reasonable need, or
• a formula amount equal to 23% of the difference between the parties' gross incomes.

There's an important variation: if the alimony will be deductible to the paying spouse and taxable to the receiving spouse under federal income tax law, the formula instead uses 30% of the income difference rather than 23%. Whether alimony is taxed that way depends on federal tax rules and the details of your order, so this is a point worth confirming directly with the court or a tax professional rather than assuming.

The court can also depart from the formula amount if it finds that justice requires an adjustment — so the formula is a strong default, not an absolute cap in every case.

How long term alimony lasts

The maximum length of a term alimony order is tied directly to how long the marriage lasted: up to 50% of the length of the marriage, unless the spouses agree to something different or the court finds that justice requires an adjustment to that limit.

"Length of the marriage" has a specific legal meaning here — it's counted as the number of months from the date of the marriage to the date the divorce, legal separation, or annulment petition was served on the other spouse, not the date the case was filed or the date the decree becomes final. That distinction can shift the calculation, so if the exact date of service is in dispute, that's worth sorting out early with the court.

Time-sensitive: when you have to ask

This is time-sensitive. A request for term alimony must be made either before the final divorce decree takes effect, or no later than 5 years after the decree's effective date. Reimbursement alimony has a tighter window: it must be requested before the final decree is effective, and once granted it runs for a maximum of 5 years from the decree's effective date. Missing these windows can mean losing the right to ask at all, so if alimony is even a possibility in your case, raise it before the decree becomes final rather than waiting.

Changing or ending alimony later

Term alimony can be modified — either the amount or how long it lasts — by agreement of the spouses, or by one spouse asking the court if there's no agreement. If the other spouse contests the modification request, the court can only change the order if there are findings, based on clear and convincing evidence, that there has been a substantial and unforeseeable change in circumstances since the order took effect. That's a meaningfully higher bar than in an uncontested modification, so expect to document the change carefully if the other side objects.

Reimbursement alimony is different: because it's meant to compensate for a specific past contribution, it generally cannot be modified except by agreement of both spouses.

New Hampshire law also defines "full retirement age" by reference to the paying spouse's eligibility for full Social Security retirement benefits. That term shows up in the alimony statutes, but the excerpts available here don't spell out exactly how it affects a particular order — if retirement timing is relevant to your case, confirm with your New Hampshire court or the specific language of your decree how it applies.

What happens to alimony in bankruptcy

If the paying spouse later files for bankruptcy, alimony and child support are treated as a "domestic support obligation" under federal bankruptcy law. That means the debt generally cannot be wiped out in bankruptcy, and it's paid ahead of most other unsecured debts. Property-settlement obligations from a divorce decree (as opposed to support payments) are also generally protected from discharge in a Chapter 7 bankruptcy. This is federal law, so it applies the same way regardless of which New Hampshire county the divorce was decided in.

What you can do in New Hampshire

1. Figure out which type applies to you. Are you asking for ongoing support (term alimony) or compensation for a specific past contribution (reimbursement alimony)? The deadlines and modification rules differ.
2. Check your timeline now. If your divorce decree hasn't become final yet, alimony (of either type) should be raised before that happens. If the decree is already final, confirm the effective date and count forward — term alimony requests are barred after 5 years from that date, and reimbursement alimony can't be requested at all after the decree is effective.
3. Gather income documentation. Because term alimony amounts hinge on the gap between gross incomes (and possibly on the tax treatment of the payments), pay stubs, tax returns, and documentation of any exclusions from gross income will matter.
4. Calculate the length of the marriage carefully. Get the exact date of marriage and the exact date the divorce petition was served — that period, in months, sets the outer limit on how long term alimony can run.
5. If you're seeking a modification, document the change. Because a contested modification requires clear and convincing evidence of a substantial and unforeseeable change in circumstances, keep records (job loss, medical change, income shift) that show when and how things changed.
6. Ask the court about anything that isn't clear. Details like how a specific tax situation affects the 23%/30% formula, or how full retirement age interacts with your order, can vary by case — your local New Hampshire family court or court self-help resources can clarify how these apply to your specific decree.

This article is for general information only and is not legal advice; consult a licensed New Hampshire attorney about your specific situation.