How to Divide a 401(k) in Divorce

A 401(k) is divided by a Qualified Domestic Relations Order, a QDRO, that tells the plan administrator how to split the account. A 401(k) is a defined contribution plan: it behaves like an investment account, the balance moves with the market, and the order has to be specific enough for the plan to implement without interpreting it.

How is a 401(k) divided in a divorce?

A 401(k) is divided by a QDRO. The QDRO is a court order entered in the divorce that directs the plan administrator to set up a share for the other spouse, who in the order is the alternate payee. A 401(k) is a defined contribution plan, which means each participant has an account with a running balance rather than a promised monthly benefit. The account holds investments, and the balance rises and falls with the market.

Plan administrators do not interpret intent and do not resolve ambiguity. They implement what the order says. A QDRO that is clear enough to administer moves through approval; an order that leaves a date or an amount open can sit in a rejection queue until it is corrected. A defective order can surface months after the divorce is final.

Why pension language does not fit a 401(k)

The coverture formula and the phrase marital share belong to defined benefit pensions. In a pension, a monthly benefit is earned over a working career, and a fraction expresses how much of that benefit was earned during the marriage. A 401(k) is not a pension. It is an account with a balance, and a 401(k) plan administrator will generally not run a coverture calculation. An award written as 50% of the marital share, with no dollar figure and no date, gives the administrator nothing it can act on.

This distinction is settled. The coverture formula and marital-share language apply to defined benefit pensions, not to defined contribution accounts such as a 401(k), 403(b), or IRA. A 401(k) award needs a specific dollar amount or a percentage tied to a specific valuation date.

The five things a 401(k) order addresses

As a general matter, a defined contribution award is administrable when it addresses five things. Missing any one of them is a rejection risk:

• The exact plan name and the provider, not just the account nickname. Naming the custodian, such as the Fidelity account, without naming the plan and the employer is generally not enough.
• A percentage or a dollar amount.
• A valuation date the plan will accept.
• How gains and losses between the valuation date and the transfer are handled.
• How any plan loan is treated.

Whether a particular order meets a particular plan's requirements is a question for counsel and for the plan document. The five elements are a general description of what makes a defined contribution order administrable, not a checklist applied to a reader's order.

Valuation date and cutoff date are not the same

The cutoff date is the legal date the marital estate stops growing. It is often set by the settlement agreement or by state law. The valuation date is the date the plan uses to measure the dollar value of the share it transfers. These are frequently different dates.

Most 401(k) plans accept a past valuation date and apply gains and losses from that date forward. The plan, not the agreement, controls which dates it will honor. An order that points to an ambiguous reference, such as date of divorce or date of agreement, can be rejected because the plan cannot tie it to a specific account value. How a valuation date is set in a specific case is a matter for counsel.

Who gets the gains and losses

A 401(k) balance keeps moving with the market between the valuation date and the day the share is actually separated. Because of that, the dollar figure in a decree is rarely the exact amount that lands in the alternate payee's account.

How the award is expressed determines who carries that market movement. A percentage with gains and losses moves with the account, up or down. A fixed dollar amount stays the same regardless of what the market does. Whoever the order names receives the gains and losses between the cutoff and the transfer. If the order is silent, the plan applies its own default.

How a 401(k) loan changes the math

A plan loan changes what is actually in the account. When a participant borrows from a 401(k), that money leaves the investments, so the account value with the loan outstanding is a different number from the value if the loan were repaid. An order can address whether the loan reduces the recipient's share, which is a separate question from who repays the loan.

Here is an illustrative example, with figures used only to show the mechanics. Suppose an account shows a $100,000 balance with a $10,000 loan outstanding. The investments in the account are worth $90,000, because $10,000 is out on loan. Whether a 50% award is measured against the $100,000 figure or the $90,000 figure produces two different transfer amounts. An order that does not address the loan leaves that result to the plan's default. How a loan is treated in a specific division is a question for counsel.

Who pays the QDRO administrative fee

Many plans charge a fee to process a QDRO. A plan may charge that fee to participant accounts only if the plan document authorizes it. The fee can come out of one account, both accounts, or be split, so a 401(k) order can state who pays it. Whether and how the fee applies in a given case depends on the plan document, which is a matter for counsel.

Forensic tracing of a 401(k)

A 401(k) often holds more than marital money. It can hold:

• A balance that predates the marriage.
• Rollovers from prior employer plans during the marriage.
• Post-cutoff contributions if the participant kept contributing after the cutoff date.
• A mix of sources across the account's history.

The forensic question is what portion is marital, measured from the date of marriage forward. The pre-marriage balance is the opening figure, and the analysis is what happened from the date of marriage to the cutoff date. The division question and the tracing question are separate. The marital portion is calculated from the plan's statements before the transfer amount is set, so the order reflects what each party is actually entitled to under the agreement. See the forensic tracing guide for how that analysis works, and the gains and losses guide for the market-movement side.

After the 401(k) order is approved

Approval of a QDRO is a milestone, not the finish line. After the plan accepts the order, it generally sets up or recognizes the alternate payee's share, sends a packet with forms and a tax notice, waits for the recipient's election where choices are required, and then processes the result. This commonly takes a few weeks to a few months. Plans and custodians generally do not initiate follow-up; the process moves when the parties or their representatives act on it.

When the share is paid out, the recipient is usually asked to choose: roll it to an IRA or another eligible plan, which generally has no current income tax, or take cash, which is generally taxed as ordinary income that year. A special rule in federal tax law can affect the early-withdrawal penalty on amounts an alternate payee receives directly from a qualified employer plan under a qualifying order, but how that rule applies, including whether it applies at all to a given account, depends entirely on the facts and should be confirmed with a tax professional. This is general information, not tax advice. See the after the order is approved guide for what the process looks like.

What TOVA does not do

• We do not negotiate settlement terms or decide who is entitled to what. We document what the records show and what the plan can administer.
• We do not make strategic litigation decisions.

What we need to start a 401(k) case

• The most recent 401(k) statement, and a statement near the date of marriage and the cutoff date if available.
• The plan name, the employer, and the provider or custodian.
• The settlement agreement or the proposed language addressing the 401(k).
• The date of marriage and the cutoff date.
• Any loan or rollover history known to the parties.

When TOVA is engaged through counsel, records come through the attorney.

For related context, see the IRA division guide, the settlement language review page, the FAQ on which court order divides which plan type, and the pricing page ($700 flat project fee for a standard 401(k) QDRO).