Retirement accounts are the largest asset in most Colorado divorces after the house, and the asset most often divided badly, not because the law is unclear but because the paperwork is unforgiving. A plan administrator does not care what the parties meant; it reads the order and applies its own rules. The decree can say "half the pension" and the former spouse can still end up with nothing if the participant dies first, or with less than half if the order was silent on gains.
Three Kinds of Accounts, Three Ways to Move the Money
A private-employer 401(k), 403(b), or pension is governed by ERISA and divided by a qualified domestic relations order. Under I.R.C. § 414(p) the plan administrator, not the judge, decides whether the order qualifies, and it rejects anything that asks for a benefit the plan does not offer. The order must name the plan by its legal name; "the Fidelity 401(k)" describes more than 20,000 plans.
Colorado PERA and other public plans are not ERISA plans. They divide under C.R.S. § 14-10-113(6), which has three hard edges. The court has no jurisdiction to divide a public retirement benefit except on the parties' written agreement. The agreement must reach the plan within 90 days after the decree, and PERA enforces that deadline strictly. And PERA requires its own order form, used without alteration. A former spouse who misses the window has a claim against the participant, not the plan.
An IRA needs no QDRO at all. Under I.R.C. § 408(d)(6), a transfer to a former spouse under a divorce instrument is not taxable, and the custodian's own transfer form usually suffices. A participant who withdraws the funds and writes a check, instead of moving them custodian to custodian, owes income tax and, if under 59½, a 10 percent penalty (Jones v. Commissioner, T.C. Memo 2000-219). The penalty exception for QDRO distributions in I.R.C. § 72(t)(2)(C) does not apply to IRAs.

Pensions: The Marital Fraction and the Offset Decision
A defined benefit plan promises a monthly check for life based on service and salary. It has no account balance, so the marital share is a fraction. Under the time rule approved in In re Marriage of Hunt (Colo. 1995), the numerator is the months of marriage that overlap the participant's service, the denominator is total service at retirement, and the result is multiplied by the former spouse's percentage, usually 50. Twenty years of marriage inside a 30-year career makes two-thirds of the benefit marital; the former spouse receives half of that.
The time rule deliberately includes post-decree raises and service, because the early years of service made the later years valuable. Colorado courts are not required to use it; Hunt and In re Marriage of Kelm (Colo. 1996) leave the method to the trial court. What a court may not do is subtract the present value at the wedding from the present value at the decree and call the difference marital (In re Marriage of James, 1997), and it should assume retirement at normal retirement age with a full benefit (In re Marriage of Nordahl, 1992).
The alternative to dividing a pension is valuing it. An actuary computes the present value of the future stream, the participant keeps the pension, and the other spouse takes offsetting assets. Offset fits when the participant is young, other assets exist, or the participant will not agree to divide a PERA benefit. It carries two risks. A present value is an estimate the plan will never pay, so it cannot become a lump-sum order later. And a pension is pre-tax, lifetime, inflation-protected money; trading it for home equity at face value overpays for the house.
The Death Problem: Survivor Benefits
A pension is measured on the participant's life. If the participant dies, the check stops, and so does the former spouse's share. ERISA plans solve this with a separate-interest QDRO, which carves out the former spouse's share on that spouse's own life expectancy, allows an independent start date once the participant reaches earliest retirement age, and survives the participant's death. Most plans do not sever the interest until benefits begin, so the order should also award a qualified pre-retirement survivor annuity, which usually costs nothing, to cover the gap.
Government plans do not offer a separate interest. PERA, FERS, and military retired pay are shared-payment plans: the former spouse is paid if and when the participant is paid. PERA's own materials say that an alternate payee may receive nothing if the participant dies before benefits start, and that the alternate payee's payment reverts to the retiree if the alternate payee dies first. The protection is a survivor or cobeneficiary election, which reduces the monthly benefit and should be priced in the agreement. A Colorado court may order the participant to elect survivor coverage even if the result is a disproportionate division (In re Marriage of Payne, 1995), and for a PERA retiree who already named the spouse cobeneficiary, only the court can remove that designation (In re Marriage of Mack, 2022 CO 17). An ERISA participant's benefit election at retirement is irrevocable.
401(k)s: Valuation Dates, Gains and Losses, and Loans
A defined contribution plan has a balance that moves every day. The order must state a valuation date, usually the decree, and say whether the former spouse's share is adjusted for investment gains and losses until the plan actually segregates the account. If a $100,000 account is split equally at the decree and grows to $110,000 by segregation, an order with gains-and-losses language pays each spouse $55,000. An order without it pays the former spouse $50,000 and the participant $60,000. Plan defaults vary; nobody should rely on them.
A plan loan reduces the divisible balance and can never be transferred to the former spouse. The order must say whether the loan is added back before division or deducted. With a $100,000 balance and a $20,000 loan, deducting the loan gives each spouse $40,000, with the participant repaying it from a $60,000 account; adding it back gives the former spouse $50,000 because the participant spent the proceeds. Which is fair depends on whether the loan paid marital expenses (In re Marriage of Jorgenson, 2006). No order can assign only the Roth dollars or only the pre-tax dollars; a QDRO takes pro rata from every contribution source.
Military and Federal Plans, Briefly
Since the 2017 National Defense Authorization Act, military retired pay divided as property is frozen at the member's rank and years of service on the decree date, and the order must state that pay figure and service as of that date. DFAS pays a former spouse directly only after ten years of marriage overlapping ten years of service, and the Survivor Benefit Plan election must be filed within one year of the decree or it is lost. Federal civilian pensions (FERS and CSRS) use a Court Order Acceptable for Processing and pay a former spouse only when the employee is paid; the Thrift Savings Plan divides like a 401(k).
Drafting Mistakes That Cost Money
- Waiting until after the decree to think about the QDRO. Benefits the decree does not address, such as COLAs, early-retirement subsidies, and survivor coverage, are treated by most plans as not awarded.
- Assigning a lump sum from a pension that pays only annuities, or a formula share of a 401(k). Both get rejected.
- Silence on gains and losses, or on the loan balance.
- Missing the PERA 90-day deadline, or editing PERA's form.
- Offsetting a pre-tax pension against after-tax assets without tax-effecting either.
The order should also say who drafts, who pays, and by when; interest can run against a spouse who delays a court-ordered transfer (In re Marriage of Collins, 2023 COA 116M).
Talk to a Denver Divorce Attorney About Retirement Division
Aaron Herzberg is a divorce attorney in Greenwood Village, Colorado, serving Denver and the Front Range, with more than 30 years of trial experience and a practice focused on divorce, custody, and financially complex family law. Retirement orders should be drafted alongside the separation agreement, not after it, because the plan's rules limit what the agreement can promise. A first meeting is a paid consultation, not a free call and not a sales pitch.
Read the full guide on DenverDivorce.com: Retirement Assets in a Colorado Divorce.
Educational information only, not legal advice. Reading this article does not create an attorney-client relationship.
