Divorce settlements involving a pension often produce a document most people have never heard of: a Qualified Domestic Relations Order, or QDRO (pronounced "quadro"). The QDRO is what actually moves money from one person's retirement account to another's. Without it, the pension plan legally cannot pay anyone other than the original participant.
Here's what a QDRO does, how the math works, and what you need to verify before signing anything.
What a QDRO is
A QDRO is a court order that satisfies specific requirements under ERISA and IRC § 414(p). It tells a retirement plan to split the benefit between the employee-participant and the alternate payee (usually the former spouse). The plan administrator reviews the order for acceptability before honoring it.
The QDRO must identify: the participant and alternate payee by name and last known address, the specific plan name, the dollar amount or percentage to be paid to the alternate payee (or the formula for determining it), and the number of payments or time period covered.
If the QDRO language doesn't satisfy the plan's requirements, the administrator will reject it. A rejected QDRO is worthless -- and you've lost time and potentially violated the terms of your divorce settlement. Always have a QDRO specialist attorney draft the order, and always have the plan administrator pre-approve the language before submitting it to the court.
How the pension is divided
For defined benefit (traditional) pensions, the most common approach is the coverture fraction method. It calculates the marital share of the pension -- the portion earned during the marriage -- and then splits that share between the two parties.
The coverture fraction is: (years married while participant was in the plan) / (total years in the plan at retirement). If the participant worked in the plan for 28 years and was married for 20 of them, the marital fraction is 20/28 = 71.4%. The alternate payee typically receives 50% of that marital share: 50% of 71.4% = 35.7% of the total pension.
The participant keeps their pre-marital service and their post-divorce service entirely. The alternate payee receives their share when the participant actually retires (or at the plan's earliest permitted distribution age, if specified).
The other common approach is a fixed percentage or fixed dollar amount. The alternate payee receives X% or $Y per month regardless of what the participant eventually earns. The fixed approach is simpler but doesn't account for future salary growth -- a significant issue if the participant is early in their career with substantial earning years ahead.
Defined contribution plans (401k, 403b)
For defined contribution plans, QDROs work differently. The alternate payee gets a specific dollar amount or percentage of the account balance on a specific date. Once the transfer is made, the alternate payee has their own account and can roll it to an IRA or take distributions.
An important exception: distributions to an alternate payee under a QDRO are exempt from the 10% early withdrawal penalty, even if the alternate payee is under 59.5. The amount is still taxable as ordinary income unless rolled to an IRA. This is a meaningful benefit -- it gives the alternate payee flexibility to access funds immediately if needed without penalty.
Tax treatment
The QDRO transfer itself is not a taxable event. The pension benefit or account balance moves from the participant's plan to the alternate payee without triggering taxes at the time of transfer. Taxes apply when distributions are actually taken -- by the participant from their share, or by the alternate payee from their share.
For defined benefit pensions, the alternate payee pays ordinary income tax on pension payments as they receive them, at their own tax rate. For 401(k) transfers, rolling to a traditional IRA defers all taxes until withdrawal. Rolling to a Roth IRA triggers taxes immediately but creates tax-free future growth.
Federal employees: no QDRO
FERS and CSRS pension plans are not covered by ERISA, so they don't use QDROs. Instead, federal pension division is governed by a Court Order Acceptable for Processing (COAP) submitted to OPM. The TSP uses a Retirement Benefits Court Order (RBCO). Military pensions use the Uniformed Services Former Spouses' Protection Act (USFSPA). Each has distinct language requirements and is processed by a different agency. An attorney who drafts private employer QDROs but has no federal retirement experience is the wrong person to handle a federal pension division.
What to verify before finalizing
Before any divorce settlement involving a pension is final: get the plan administrator to pre-approve the QDRO language in writing, confirm the alternate payee's rights if the participant dies before retirement (survivor benefit language matters enormously), clarify what happens if the participant takes early retirement vs. normal retirement, and confirm whether cost-of-living adjustments apply to the alternate payee's share. None of these questions have standard answers across all plans -- they depend on the specific plan document and the QDRO language you negotiate.