For a divorce or separation agreement executed after 2018, alimony generally is not deductible by the person who pays it and is not taxable income to the person who receives it at the federal level. Older agreements may follow the earlier rule. State rules and your own circumstances may differ, so confirm yours with a tax professional.
That one-paragraph answer hides the part that matters in practice: which rule your agreement falls under, whether the payments count as alimony at all, and what the amount on the page may be worth to you once you have compared it with everything else on the table. This guide walks through each, in plain terms. It is general education, and the tax questions that are specific to you belong with the IRS and a qualified tax professional.
Why the date on the agreement matters
Federal tax treatment of alimony changed for agreements signed at the end of 2018, and the change did not apply to everyone at once. The IRS explains the two rules in Topic no. 452, Alimony and separate maintenance and in Publication 504, Divorced or Separated Individuals.
- Agreements executed before 2019. Generally, payments that qualify as alimony are deductible by the person paying and includible in the income of the person receiving.
- Agreements executed after 2018. The person paying cannot deduct the payments, and the person receiving does not include them in gross income.
The date that counts is the date the divorce or separation instrument was executed, which can differ from the date of the divorce itself or the date the first payment was made. Your attorney can tell you which date applies to your paperwork, and a tax professional can tell you how the matching rule applies to you.
What happens if an older agreement is changed
An agreement signed before 2019 does not always stay under the earlier rule forever. According to the IRS, an agreement executed before 2019 and later modified follows the newer rule only if the modification expressly states that the repeal of the deduction applies to it. Publication 504 includes worked examples of this situation under "Certain Rules for Instruments Executed or Modified After 2018."
In general terms, that means two things may be worth knowing if your agreement is older:
- A change to the amount or the length of support, on its own, may not move the agreement to the newer rule.
- The wording of the modification may matter as much as the change itself.
If you are negotiating a change to an older agreement, ask your attorney how the modification should address the tax treatment, and ask a tax professional what each version would mean for you.
Not every payment is alimony
A payment made under a divorce agreement is not automatically alimony for tax purposes. The IRS lists requirements a payment has to meet, and several common items are expressly excluded. Per Topic no. 452, alimony or separate maintenance does not include:
- Child support
- Noncash property settlements, whether paid in a lump sum or in installments
- Payments that are your spouse's part of community property income
- Payments to keep up the payer's property
- Use of the payer's property
- Voluntary payments that are not required by a divorce or separation instrument
The IRS also says that child support is not deductible and is not considered income. If an instrument provides for both alimony and child support and less than the total is paid, the payments are applied to child support first, and only what remains is considered alimony.
How alimony differs from child support and property
It helps to keep three kinds of money apart, because each is treated differently and each answers a different question.
| What it is for | Where to read about its tax treatment | |
|---|---|---|
| Alimony (spousal support) | Support for a spouse or former spouse, under the agreement | IRS Topic no. 452 and the Alimony section of Publication 504 |
| Child support | Support for the children | IRS Topic no. 452 |
| Property settlement | Dividing what you own, such as the house, accounts and retirement money | The Property Settlements section of Publication 504 |
A settlement sometimes trades one for another. More support may be offered in exchange for less property, or the reverse. Because the three are treated differently, comparing them on the headline number alone may mislead. How an agreement labels each payment is a legal question for your attorney and a tax question for your tax professional.
Why the number after tax matters when you compare offers
Two offers can look similar and leave you in different positions. That is the reason to work in numbers before agreeing to anything: put each option on the same footing and ask what you may have available to spend.
For support, that comparison may involve several things:
- Which rule applies. Whether the payments are deductible or taxable depends on the agreement, as described above. Your tax professional can confirm how it applies to you.
- How long the payments run, and what ends them. Support often has an end date, and an agreement may end it earlier for certain events. Seven financial mistakes to avoid in a divorce settlement covers why the plan for the years after support matters.
- What you may be giving up to get it. If support is offered in place of a share of the house or retirement savings, compare each on an after-tax, like-for-like basis. How to divide assets in a divorce explains how to put cash, retirement money and a home side by side.
- What it may cost to live on. The figure that decides whether an offer works is what a year of your life costs, set against the money you may actually receive. The first year after a divorce walks through building that number.
A simple worksheet can help. Fill in each column with figures from your own agreement and your own tax professional, not from an example.
| Offer A | Offer B | |
|---|---|---|
| Monthly support, and for how long | ||
| What ends the payments | ||
| Property or accounts received in the same offer | ||
| Tax treatment confirmed by a tax professional (yes or no) | ||
| Amount available to spend each year, after tax | ||
| Estimated yearly cost of the household I will have |
The blanks are deliberate. Tax rates depend on your income and your situation, and an example figure here could mislead you.
Questions for your attorney and your tax professional
It helps to be clear about who answers what.
Your attorney advises you on the law: whether support is appropriate in your case, how long it may last, how the agreement should be worded, and how the instrument is dated and executed. I am not an attorney and I do not give legal advice.
A tax professional advises you on how the tax rules apply to your income and filing situation, including state income tax, which is a separate question from the federal rule described here.
The numbers work covers the comparison underneath: what each offer may be worth to you after tax, how long it may last, and what your finances may look like once it ends.
Ask before you agree
Before you sign anything that sets or changes support, it may help to be able to answer yes to each of these:
- Do I know the date the agreement is executed, and which federal tax rule my attorney and tax professional say applies?
- If the agreement is older and may be changed, have we discussed whether the change states which rule applies?
- Does the agreement clearly separate alimony, child support and property, and has a tax professional reviewed how each is labeled?
- Do I know how long support runs and what ends it, including remarriage or other events your state may recognize?
- Have I asked a tax professional about my state income tax, as well as the federal rule?
- Have I compared this offer with the alternatives on an after-tax, like-for-like basis?
- Have I tested the numbers against the household I will have, including the years after support ends?
If any answer is no, that is a question to ask before the agreement is final, not after.
Frequently asked questions
Is alimony deductible on taxes?
It depends on when your agreement was executed. For an agreement executed after 2018, the IRS says the person paying cannot deduct alimony. For an agreement executed before 2019 and not modified to adopt the newer rule, alimony may still be deductible by the payer. A tax professional can confirm which applies to you.
Do you pay taxes on alimony?
Under the federal rule for agreements executed after 2018, the person receiving alimony does not include it in gross income. Under the earlier rule for older agreements, it may be includible. State income tax is a separate question, so ask a tax professional about your state.
Who pays taxes on alimony?
It depends on the agreement. Under the earlier rule, the person receiving alimony reports it as income and the person paying may deduct it. Under the rule for agreements executed after 2018, neither of those applies at the federal level. Your tax professional can explain what that means for your return.
Are alimony and taxes treated the same way as child support and property?
No. The IRS says child support is not deductible and is not considered income. Noncash property settlements are also not alimony. Property transfers between spouses are covered separately in Publication 504, so ask a tax professional how a particular transfer would be treated.
Does changing my alimony agreement change how it is taxed?
It may, but not always. According to the IRS, an agreement executed before 2019 follows the newer rule after a modification only if the modification expressly states that the repeal of the deduction applies. Ask your attorney how any change should be worded.
Should I get tax advice before I agree to support?
It is a good idea. How support is taxed may affect what you can spend, so it may help to have a tax professional review the agreement before you sign. Your attorney handles the legal side, and the numbers work can help you compare offers.
What to do with this
Find the date your agreement was executed, and write down which payments the agreement calls alimony, child support and property. Then take the questions above to your attorney and a tax professional, and use the worksheet to compare each offer after tax.
If you would like the arithmetic done alongside that, this is the work I do, and the first conversation is complimentary.
This is general education, not advice about your situation. It is not legal, tax or investment advice. Tax rules for alimony depend on the date and terms of your agreement and may differ by state, so confirm yours with your attorney and a tax professional. See [IRS Topic no. 452](https://www.irs.gov/taxtopics/tc452) and [IRS Publication 504](https://www.irs.gov/publications/p504) for the IRS's own explanation.
