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FOR FAMILY LAW ATTORNEYS
Divorce & Taxes Guide for Family Law Attorneys and Their Clients
Divorce touches nearly every part of a couple’s financial life, and taxes are woven through almost all of it — filing status, support payments, dependency claims, retirement accounts, and property division. This guide walks through the tax issues that come up most often in a divorce case, organized in the rough order attorneys tend to encounter them, so you can flag issues early and bring in a tax professional at the right moments.
1. Filing Status During the Year of Divorce
Filing status is determined by marital status as of December 31 of the tax year. If the divorce is finalized on or before that date, both spouses must file as single or head of household (if eligible) for that entire year — even if they were married for eleven of the twelve months. If the divorce is not final by year-end, the couple may still file jointly, or each may file as married filing separately. This single fact can significantly influence the timing strategy in a settlement, since joint filing often produces a lower combined tax bill than two separate returns.
Head of household status is worth flagging specifically: a spouse who lived apart from their spouse for the last six months of the year, paid more than half the cost of maintaining the home, and has a qualifying child living with them for more than half the year may qualify for head of household status even while technically still married — which carries more favorable tax brackets and a higher standard deduction than married filing separately.
2. Alimony and Spousal Support
The Tax Cuts and Jobs Act fundamentally changed the treatment of alimony for any divorce or separation agreement executed after December 31, 2018. For these post-2018 agreements, alimony is no longer deductible by the paying spouse and is no longer taxable income to the receiving spouse. This is a dramatic shift from the pre-2019 rules, where alimony was deductible to the payer and taxable to the recipient — and it materially affects negotiation dynamics, since the payer can no longer offset support payments against taxable income.
Agreements executed before 2019 that are later modified generally keep the old tax treatment unless the modification explicitly states that the new rules apply. This distinction is easy to miss during a modification and can create confusion for both spouses when tax season arrives.
3. Child Support, Dependency Claims, and Credits
Child support is never taxable to the recipient nor deductible by the payer, regardless of when the agreement was executed. The more frequently litigated issue is who claims the child as a dependent — which determines eligibility for the Child Tax Credit and other dependent-related benefits. By default, the custodial parent (the one with whom the child lives for the greater number of nights) claims the dependency. The custodial parent can release this claim to the noncustodial parent using IRS Form 8332, which is often incorporated into the settlement agreement on a year-by-year or alternating basis.
It is worth noting explicitly in the settlement agreement which parent claims the child in which years, and to require the custodial parent to sign Form 8332 as needed — disputes over this form are one of the most common post-divorce tax conflicts we see.
4. Property Division and Section 1041
Transfers of property between spouses incident to divorce are not taxable events under IRC Section 1041. However, as discussed in more detail in our companion article on the marital home, the receiving spouse takes a carryover basis rather than a stepped-up basis — meaning the built-in gain travels with the asset. This is a critical point when comparing the true value of two seemingly equal assets: $200,000 in cash is not equivalent to $200,000 in stock with a $50,000 basis, because the stock carries a future tax liability the cash does not.
5. Retirement Accounts and QDROs
Dividing a 401(k), pension, or similar employer-sponsored retirement plan generally requires a Qualified Domestic Relations Order (QDRO) — a separate court order that instructs the plan administrator on how to divide the account. A properly drafted QDRO allows funds to move to the receiving spouse’s own retirement account without triggering immediate taxation or the 10% early withdrawal penalty. IRAs are divided differently, through a transfer incident to divorce that does not require a QDRO but does require specific language in the divorce decree.
A poorly drafted or missing QDRO is one of the most expensive mistakes we see post-divorce — sometimes resulting in a spouse receiving a taxable, penalized cash distribution instead of a tax-free rollover simply because the paperwork wasn’t handled correctly or wasn’t submitted before a triggering event.
6. Joint and Several Liability on Prior Returns
Spouses who filed joint returns during the marriage are each fully liable for the entire tax debt on those returns — including tax attributable solely to the other spouse’s income, deductions, or errors. This liability does not automatically end at divorce, and a clause in the divorce decree indemnifying one spouse is not binding on the IRS. If your client is at risk of being pursued for a tax debt created by a spouse’s business, unreported income, or errors, Innocent Spouse Relief may be available — a topic we cover in detail in a separate article in this series.
7. Estimated Taxes and Withholding
Once support arrangements and filing status change, many clients need to adjust their W-4 withholding or begin making quarterly estimated tax payments, particularly if they are now receiving non-wage income or supporting themselves without the benefit of a second income to buffer their withholding. This is an easy step to overlook during the emotional upheaval of a divorce, and clients frequently arrive at tax time with an unexpected balance due.
How Attorneys and Tax Professionals Work Best Together
The most efficient divorce cases we’re involved in follow a simple pattern: the attorney identifies where taxes intersect with the settlement (filing status, support, property division, retirement accounts, dependency claims), and a tax professional is brought in early enough to model the actual after-tax outcome of proposed settlement terms — not just the face-value numbers. A settlement that looks equitable on paper can be lopsided once the tax consequences are applied to each asset and income stream.
What To Do Next
- Build a standard intake checklist that flags filing status, support type, property basis, retirement accounts, and joint-return history at the start of every case.
- Confirm the execution date of any alimony provision (before or after January 1, 2019) to apply the correct tax treatment.
- Include explicit dependency-claim and Form 8332 language in every settlement involving children.
- Engage a QDRO specialist or tax professional before finalizing any retirement account division.
- Refer clients with joint-filing tax exposure to LP Tax And Bookkeeping Pros to evaluate Innocent Spouse Relief or other resolution options before the divorce is finalized.
This article is provided for general informational purposes only and does not constitute tax or legal advice. Every case is fact-specific; please consult with a qualified tax professional regarding your client’s individual circumstances.