Large-Employer Pension Buyout Windows: Should You Take the Offer?

Your company just offered you a one-time chance to take a lump sum instead of the monthly pension you earned. You have 60 days. This guide explains how the lump sum is calculated, who the offer typically benefits, and how to evaluate it without a conflict-of-interest advisor pushing you either way.

What is a pension buyout window?

A pension buyout window — sometimes called a lump-sum window or de-risking offer — is a time-limited program where a defined-benefit pension plan offers former employees and sometimes current retirees the option to exchange their future monthly pension for a single lump-sum payment today.

These offers are not random acts of generosity. Sponsors run buyout windows to:

• Reduce balance-sheet liability. Pensions show up as a long-term obligation on corporate balance sheets. Buying out former employees removes that liability permanently.
• Reduce PBGC variable-rate premiums. Companies pay annual per-participant premiums to the Pension Benefit Guaranty Corporation. Fewer participants means lower premiums. In 2026, the flat-rate PBGC premium is $106 per participant.¹
• Lock in interest-rate risk transfer. When rates are elevated, the lump sum the company must offer is mathematically lower than when rates were near zero. Companies prefer to run windows in high-rate environments to reduce the cost of the buyout.

How the lump sum is calculated: IRS segment rates

Most corporate pension lump-sum offers are calculated using IRS minimum present value segment rates — three interest rates that discount different portions of your future payment stream:

• First segment (years 1–5): discounts payments in the near term.
• Second segment (years 6–20): discounts mid-range payments.
• Third segment (years 21+): discounts the longest-duration payments.

The September 2025 IRS minimum present value segment rates — which many 2026 plan years use — were 4.81%, 5.35%, and 5.69% respectively.² These are meaningfully higher than the near-zero rates of 2020–2021, which is why lump-sum offers in 2026 are substantially lower (in present-value terms) than equivalent offers made five years ago.

A concrete example: If you would receive a $4,000/month lifetime pension starting at 65, the present value of that stream discounted at the 2020-era rates (near 1%) was roughly $1.1M. Discounted at today's 5%+ rates, the same stream is worth roughly $620,000. Companies offering buyout windows in 2026 are doing so at today's rates — so the lump sum feels large in nominal terms but may substantially undervalue your pension.

Your offer letter will typically disclose which interest rates and mortality table were used. Ask for them explicitly if not provided. A fee-only actuary or financial planner can then model whether the offer reflects fair value or a discount.

The PBGC protection question

One argument for accepting a buyout window is concern that the company might go bankrupt before you collect your full pension. This is a real risk for participants in underfunded plans — but it is bounded by PBGC insurance.

For single-employer plans, the PBGC guarantees up to $7,789.77 per month ($93,477 per year) for a 65-year-old retiree in 2026 on a straight-life annuity.¹ If your pension is under this threshold, PBGC insurance covers your full benefit even if the sponsor fails. If your pension is meaningfully above this threshold, the unfunded excess is at risk.

Important caveats:

• PBGC coverage is for single-employer plans only. Multi-employer (union) plan participants have a separate, much lower guarantee ($35.75/month per year of service, up to 30 years — maximum ~$1,073/month at 30 years).³
• Most Fortune 500 pensions are well-funded. PBGC plan funding data shows the overwhelming majority of large corporate plans are at or above 100% funding. Bankruptcy risk is not evenly distributed.
• Taking the lump sum eliminates PBGC risk permanently. But if the plan is healthy and your benefit is under the guarantee cap, you're trading guaranteed income for investment risk — which is a different kind of risk, not risk elimination.

Decision framework: take the window or decline?

There is no universal answer. Here is how to structure the analysis:

The case for taking the buyout window

• Health concerns or shorter family longevity. If you don't expect to live to your mid-80s, the annuity stream loses value rapidly against the lump sum. A 68-year-old in poor health who takes a $700K lump sum and invests it conservatively may leave more to heirs than collecting $3,500/month for 10 years.
• Your pension is above the PBGC guarantee cap and the plan is underfunded. If the plan funding ratio is below 80% and your monthly benefit exceeds $7,789/month, there is real downside risk in staying.
• You have strong investment discipline and an existing retirement portfolio. A $900K lump sum rolled into an IRA alongside a $1.5M existing portfolio is very different from a $900K lump sum as your only retirement asset.
• No surviving spouse or heirs aren't a concern. Life-only annuities die with you. Lump sums can be passed on.

The case for declining

• You or your spouse have above-average life expectancy. The annuity becomes increasingly valuable the longer you live. At age 85, $4,000/month from the plan beats almost any investment scenario for a lump sum taken a decade earlier at elevated rates.
• You don't have other guaranteed income. If this pension is your only reliable non-Social Security income, giving it up exposes you to sequence-of-returns risk in your portfolio — a sequence of poor early returns can permanently impair a lump sum.
• The plan is well-funded and your benefit is under the PBGC cap. If you're collecting $4,500/month from a 110%-funded corporate plan, your benefit is essentially iron-clad. There's little to gain from taking the buyout.
• Current interest rates are high. When rates are elevated, lump sums are discounted more aggressively. The offer is cheaper for the company to make — and correspondingly less valuable to you.

Tax execution: the direct rollover is critical

If you accept a buyout and choose the lump sum, how you take the money determines your tax bill:

• Direct rollover to a traditional IRA: No withholding, no current taxes, no penalty. The entire lump sum moves pretax. Under IRC §402(c), this is a tax-free rollover as long as the money goes directly to the IRA custodian without passing through your hands. This is almost always the right execution path.⁴
• 60-day indirect rollover: The plan is required to withhold 20% for federal income taxes. You receive 80% of the lump sum and must come up with the withheld 20% out of pocket to deposit the full amount into the IRA within 60 days — otherwise, the 20% is treated as a taxable distribution.
• Cashing out: The full lump sum becomes ordinary income in the year received. On $600K, that means the top marginal tax bracket applies to most of the distribution. Additionally, if you are under age 59½ (and the age-55 separation rule doesn't apply), a 10% early withdrawal penalty applies on top of ordinary income tax.

What a buyout window does NOT give you time to figure out on your own

Sixty days sounds like a lot of time. It's not, when the analysis includes:

• Extracting the correct IRS segment rates used in your plan's lump-sum calculation
• Running a present-value model using your actual life expectancy and spousal survivorship
• Comparing the lump-sum NPV against the annuity stream at 3–4 different assumed return rates
• Evaluating plan funding status via the annual funding notice your employer is required to provide
• Coordinating with Social Security filing strategy (which affects how much replacement income you need from the pension)
• Modeling tax impact of the rollover on Roth conversion opportunities, IRMAA brackets, and future RMDs

A fee-only advisor who specializes in pension decisions — and has no commission interest in whether you take the lump sum — can build this model and give you a defensible answer within your 60-day window.

See our full pension rollover decision framework for the broader lump-sum vs. annuity analysis, or use our lump sum vs. annuity calculator to run your own numbers before talking to an advisor.