US Retirement: 401(k), Social Security and Roth — 2026-10-17
The Social Security Administration announced a 3.6% Cost-of-Living Adjustment (COLA) for 2027, bringing an average monthly increase of roughly $75 for 76 million beneficiaries. Meanwhile, the retirement savings landscape faces significant legal and regulatory shifts, with the Supreme Court reviewing a major 401(k) case regarding private funds and a wave of fiduciary lawsuits targeting target-date fund performance and proprietary fees.
US Retirement: 401(k), Social Security and Roth — 2026-10-17
Top developments
Social Security COLA Confirmed at 3.6% for 2027
The Social Security Administration officially announced on October 14, 2026, that benefits will rise by 3.6% in 2027. This adjustment translates to an average increase of approximately $75 per month for retirees. While this provides some inflation relief, analysts note that the increase may not fully offset rising costs in healthcare and housing for beneficiaries. The announcement aligns with projections from earlier in the year, confirming the financial outlook for the next fiscal cycle.
Supreme Court Reviews Intel 401(k) Private Fund Case
The US Supreme Court is currently evaluating whether employers can offer private investment funds in 401(k) plans without exposing themselves to heightened fiduciary liability. The case, centered around Intel’s retirement plan, has drawn attention from plan sponsors who are eager for clarity on the Labor Department’s upcoming rules regarding private investments. Justices have questioned the boundaries of fiduciary duty when participants opt into these alternative assets, a decision that could reshape how large plans structure their investment menus.
Wave of Fiduciary Lawsuits Targets Target-Date Funds
A new class-action lawsuit against Insulet Corp. has been allowed to proceed, challenging the performance of American Century Investments target-date funds in its retirement plan. This follows recent legal actions against Wells Fargo and HP, alleging that plan fiduciaries retained underperforming funds and proprietary options with excessive fees. In the HP case, former employees claim that retaining two underperforming investment options cost participants in the $10.85 billion plan more than $300 million. These suits highlight growing scrutiny on the "default" investment choices in employer-sponsored plans.
IRS Warns on 2026 RMD Compliance
The IRS has issued a reminder to retirees about the December 31 deadline for 2026 Required Minimum Distributions (RMDs). Under SECURE 2.0 rules, failing to take the full RMD by the deadline can result in a 25% excise tax (reducible to 10% if corrected timely). This warning is particularly relevant for those who may have miscalculated their distribution amounts due to market volatility in the first half of 2026.
Local view
Spanish-language media outlets have widely covered the Social Security announcement, emphasizing the impact on Hispanic retirees. El País US reported that the 3.6% increase will benefit 76 million people, providing an average of $75 more per month starting January 2027. AP News noted that while some beneficiaries expressed frustration that the increase is insufficient, the official SSA release in Spanish confirmed the timeline for when updated payments will begin arriving. LA NACION highlighted the specific payment dates, clarifying that the adjusted amounts will reflect in checks issued in January 2027.
Context & numbers
- Social Security COLA: 3.6% increase for 2027, averaging ~$75/month.
- 401(k) Average Balance: Recent data indicates the average 401(k) balance is approximately $155,800 (Fidelity Q2 2026), though the median is significantly lower at $44,115, highlighting wealth disparity among participants.
- Contribution Limits: For 2026, the 401(k) contribution limit is $24,500, with a catch-up limit of $8,000 (or $11,250 for ages 60-63). The IRA limit is $7,500.
- Roth Catch-Up Rule: Employees earning over $145,000 in the prior year must make catch-up contributions on a Roth basis in 2026. Final regulations are effective in 2027, with a good-faith compliance standard applied in the interim.
On the radar
- October 21, 2026: Next scheduled Social Security payment date for beneficiaries with birth dates between the 11th and 20th of the month.
- Labor Department Rulemaking: Plan sponsors are awaiting final guidance from the DOL on private equity and hedge fund inclusion in 401(k) plans, pending the Supreme Court's decision in the Intel case.
- RMD Deadline: December 31, 2026, is the hard deadline for 2026 Required Minimum Distributions; late filers face excise taxes.
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