If your decree awards you part of your former spouse's 401(k) or pension, or awards part of yours to them, the decree alone generally does not move any money. A workplace plan covered by the federal pension law known as ERISA acts on a qualified domestic relations order, or QDRO, and someone has to draft it, get it signed, and get the plan to accept it. This article covers those steps after the decree. It is part of our Montana Divorce Guide. For how retirement is valued and divided in the first place, see dividing retirement accounts and QDROs.
Why the Decree Is Not Enough
Federal law requires covered pension plans to provide that benefits may not be assigned or alienated (29 U.S.C. § 1056(d)(1)). A divorce order that hands part of a benefit to a former spouse is an assignment. The statute allows it only "if the order is determined to be a qualified domestic relations order," and it then requires the plan to pay in accordance with that order (29 U.S.C. § 1056(d)(3)(A)).
The person who receives a share under the order is called the alternate payee. That can be a spouse, former spouse, child, or other dependent of the participant (29 U.S.C. § 1056(d)(3)(K)).
What the Order Must Say, and What It Cannot Do
To qualify, an order must clearly specify four things (29 U.S.C. § 1056(d)(3)(C)):
- the name and last known mailing address of the participant and of each alternate payee;
- the amount or percentage of the benefit to be paid to each alternate payee, or the manner of determining it;
- the number of payments or the period the order covers; and
- each plan to which the order applies.
An order also fails if it requires a type or form of benefit the plan does not offer, requires the plan to pay increased benefits, or awards benefits already assigned to another alternate payee under an earlier QDRO (29 U.S.C. § 1056(d)(3)(D)). This is why a generic form copied from another case can be rejected. The order has to fit the specific plan.
The Steps, in Order
| Step | What to know |
|---|---|
| 1. Get the plan's procedures | Every covered plan must have written procedures for deciding whether an order qualifies (29 U.S.C. § 1056(d)(3)(G)(ii)). Ask the plan administrator for them, and for a model order if the plan offers one. |
| 2. Draft the order | The order has to match both the decree and the plan's rules. It must name the plan, the participant, the alternate payee, and the amount or percentage. |
| 3. Ask whether the plan will review a draft | Some plans will look at a draft before it goes to the judge. If yours will, use that step. It is easier to fix a draft than a signed order. |
| 4. Have the judge sign it | The order is entered in your dissolution case. Montana courts seal a QDRO except for access by the plan administrator, the parties, their counsel, and the child support agency (MCA § 40-4-202(6)). |
| 5. Send it to the plan | The plan administrator must promptly notify both of you that it received the order and decide within a reasonable period whether it qualifies (29 U.S.C. § 1056(d)(3)(G)(i)). |
| 6. Confirm the result in writing | Keep the plan's written determination. Then confirm the account was actually divided or the benefit set up. |
The U.S. Department of Labor, which oversees these plans, says plan administrators may develop and make available model QDRO forms but are not required to, and that a plan may not condition its decision on the use of any particular form. It also says that in an individual account plan the administrator may assess reasonable expenses of a QDRO determination against the account, so check the plan documents for who bears that cost.
Your settlement agreement should say who is responsible for preparing the order and by when. If it does not, do not assume the other side is handling it.
What Happens While the Plan Reviews the Order
Once a plan receives a domestic relations order, it has to notify the participant and each alternate payee and explain its procedures. While the question is open, the administrator must separately account for the amounts that would have been payable to the alternate payee (29 U.S.C. § 1056(d)(3)(H)(i)).
That protection has a limit. If the order, or a corrected version, is found to be qualified within 18 months of the date the first payment would have been required, the set-aside amounts go to the alternate payee. If the issue is not resolved in that time, the plan pays them to whoever would have been entitled without the order, and a later determination applies going forward only (29 U.S.C. § 1056(d)(3)(H)(ii) to (iv)). A rejected order needs to be corrected and resubmitted, not set aside for later.
Why Delay Is Risky
A plan administers benefits according to its own records. Until it has received an order, its records show one participant and whatever beneficiary that participant named. Several things can happen in that gap:
- The participant dies. Federal law treats a former spouse as the participant's surviving spouse for plan purposes only "to the extent provided in any qualified domestic relations order" (29 U.S.C. § 1056(d)(3)(F)). Without an order in place, survivor rights may belong to someone else.
- The participant retires. Once a pension starts, the form of payment and any survivor election may be hard or impossible to change under the plan's terms.
- The participant withdraws, borrows, or rolls the account over. The plan may have no reason to stop it.
- The participant remarries. A new spouse may have survivor rights under the plan unless a QDRO provides otherwise.
None of this means the share awarded in the decree is necessarily lost. The decree is still a court order, and a spouse who disregards it can be brought back to court. But recovering a benefit after the plan has paid it elsewhere is harder and less certain than getting the order entered promptly. How a particular plan treats an order that arrives after a death or a retirement depends on the plan and on federal rules that are beyond this article. If you are in that position, get advice quickly.
Plans That Do Not Use an ERISA QDRO
Not every retirement asset is divided this way.
- Montana public retirement systems. State law provides for a "family law order," with its own content rules. It must identify the participant and alternate payee by full name, current address, date of birth, and social security number, and it cannot require a benefit the system does not offer (MCA § 19-2-907(3), (4)). See Montana public pensions in divorce.
- Military retired pay and federal civilian pensions. These follow their own federal rules and agencies. See military pensions and benefits in divorce.
- IRAs. IRS Publication 504 explains that a transfer of an interest in an IRA to a spouse or former spouse under a decree of divorce, or a written instrument incident to the decree, is not a taxable transfer. The custodian will have its own transfer paperwork.
Taxes and Keeping Records
IRS Publication 504 says benefits paid under a QDRO to a spouse or former spouse must generally be included in that person's income, and that an eligible rollover distribution received under a QDRO may be rolled over tax free into an IRA or another qualified plan. Whether to roll over or take cash is a decision to make with a tax professional before you sign the plan's distribution form.
Keep the signed order, the plan's written determination, and a statement showing the division. If the plan later changes administrators or the employer is sold, those papers are your proof. If your former spouse will not cooperate in getting the order done, see enforcing a divorce decree. For the broader picture of dividing assets, see property division in Montana.
This page explains Montana law in general as of the 2025 Montana Code Annotated, and federal law in general. It is not legal or tax advice about your specific case.