Lead: Retirees entering required minimum distributions with a $2 million traditional 401(K) face a tax and Medicare premium pitfall if they shift money into a Qualifying Longevity Annuity Contract, or QLAC. The move can quietly reshape RMDs, tax brackets and even Medicare costs in 2026, a year of ongoing SECURE 2.0 updates that touch senior planning.
Understanding the trap behind a big 401(K)
The math is simple on paper but powerful in impact. When a large balance sits in a 401(K), the RMDs you must take each year are calculated from an age-based divisor. A serious balance, when divided by that factor, yields a sizable required withdrawal that is fully taxable as ordinary income. If you supply a portion of that balance to a QLAC, the amount used to compute the RMD changes, potentially lowering the immediate withdrawal percentage. The result, in some scenarios, can ripple into higher Medicare premiums and an adjusted tax outlook later in retirement.
Industry observers say that the combination of a high balance, a QLAC move, and the subsequent effects on MAGI (modified adjusted gross income) can become what some planners describe as the million 401(k) quietly trigger—a situation where a large nest egg could inadvertently raise taxes and premiums in retirement.
How a QLAC changes the RMD math
Under current rules, the RMD formula depends on the age of the account holder and the traditional 401(K) balance. For someone age 73 with a $2 million balance, the Uniform Lifetime Table divisor is about 26.5. That yields an initial RMD near $75,500 in today’s dollars. If a $200,000 QLAC is purchased, that $200,000 is excluded from the balance used to compute the RMD each year, until the QLAC payments begin, typically at age 85. The resulting RMD calculation uses $1.8 million instead of $2 million, dropping the first-year RMD to roughly $68,000–$69,000, a reduction of about $7,500.
As of 2026, the SECURE 2.0 framework places a new cap on QLAC premiums—$210,000 per person—indexed for inflation, and no longer restricted to 25% of the account balance. This change makes it easier for higher-balance accounts to use QLACs without triggering a premature cap on deferral opportunities. The QLAC payments, which start around age 85 (or later if the contract allows), are funded from the annuity and are excluded from the RMD balance during the deferral period.
Tax and Medicare implications you should know
The interaction between RMDs and MAGI is where the impact shows up most clearly. When you reduce the RMD in the year you purchase the QLAC, your MAGI for that year may dip, potentially lowering Medicare Part B premiums in the near term. But when QLAC payouts begin, those payments are generally taxed as ordinary income, which can lift taxable income in later years and influence bracket placement, IRMAA surcharges and other taxes tied to MAGI.
IRMAA thresholds for Medicare premiums, which are determined by MAGI, are well known to shift premiums for high earners. In the mid-2020s data used by planners, a MAGI around $109,000 for individuals or $218,000 for couples is cited as a tipping point for higher premiums in some years. While the precise numbers are updated annually for inflation, the general message holds: shifts in RMD and QLAC timing can correlate with Medicare costs down the road if MAGI crosses those thresholds.
Case study: A practical look at the numbers
Consider a 70-year-old with a $2 million traditional 401(K) who does not need withdrawals yet but wants to plan for the long haul. If this person purchases a $200,000 QLAC today, the RMD calculation for the year when distributions begin is altered. The first RMD drops from about $75,500 to roughly $67,900–$68,000, a noticeable step down in required withdrawals. The immediate effect is more net cash in early retirement years, but there are important tradeoffs to weigh:
- Annual QLAC payments (starting around age 85) are taxed as ordinary income during receipt and can change the tax landscape later in retirement.
- Deferring a portion of the RMD can reduce upfront tax drag and may minimize early Medicare premium impacts, but higher future withdrawals from the QLAC itself can re-enter income calculations later.
- Under SECURE 2.0, the premium cap for QLAC is $210,000, broadening how much you can set aside before hitting the cap, which affects both planning flexibility and RMD timing.
For retirement savers watching their MAGI, the puzzle is not just about today’s tax bill but how tomorrow’s QLAC payouts may change the tax profile across decades. As one veteran planner puts it, “The math is not as friendly as it looks on a single line—your future tax bracket, IRMAA, and premium screens can move in unexpected ways.”
Key data at a glance
- Age used for initial RMD calculation: 73
- Uniform Lifetime Table divisor at 73: about 26.5
- RMD without QLAC on a $2M balance: about $75,500
- QLAC purchase considered: $200,000
- RMD with $200K QLAC inside the balance: roughly $67,900–$69,000
- Projected QLAC payments: around $42,000 per year starting at age 85 (illustrative)
- SECURE 2.0 cap for QLAC premiums (2026): up to $210,000 per person
- IRMAA thresholds cited: MAGI around $109,000 (single) / $218,000 (couple) as a rough guide
Strategies to avoid the million 401(k) quietly trigger
Given the potential for future tax and premium shifts, retirees should approach QLAC planning with a careful, numbers-driven strategy. Here are steps many advisers recommend:
- Model multiple scenarios that include various QLAC sizes and ages of deferral to see how RMDs, MAGI, and premiums shift over time.
- Coordinate with a tax advisor to project how QLAC payouts will affect marginal tax rates in later retirement years.
- Consider Roth conversions in lower-tax years to smooth tax exposure, especially if MAGI may rise with QLAC payouts.
- Monitor SECURE 2.0 updates and their impact on QLAC caps, payout timing, and RMD rules in your state of residence.
- Keep an eye on Medicare premium structures (IRMAA) and how MAGI thresholds could impact costs in the next 5–15 years.
The bottom line for investors
As of mid-2026, the landscape around million-dollar retirements and long-term income planning is more nuanced than ever. A strategic use of a QLAC can shift near-term RMDs and possibly trim early tax drag, but it can also set up a different tax and premium path once payouts begin. The key for most households is to run comprehensive, long-range projections that account for both tax rates and healthcare costs, rather than relying on a single-year benefit estimate.
For those who worry about the million 401(k) quietly trigger, the message is clear: plan with a holistic view that includes RMD timing, QLAC sizing, Medicare implications, and the potential tax drag years down the road. A thoughtful approach, built with professional guidance, can help preserve more of your retirement income as you near the distribution phase.
Discussion