From 401(k)s to Social Security: What’s changing for retirement in 2026

Retirement changes 2026: Americans reviewing their retirement plans will see changes across two major pillars of retirement: 401(k) plans and Social Security in 2026. Updated contribution limits, new tax rules, and revised Social Security thresholds mean some workers may need to rethink how they save and how much they set aside.

Higher 401(k) contribution limits take effect

Workers will be able to put more money into their 401(k)s in 2026. The annual contribution limit increases to $24,500, up from $23,500 in 2025, as per a Moneywise report. Catch-up contributions are also getting a boost for many savers.

Those age 50 and older can contribute an extra $8,000, compared with $7,500 in 2025. Workers between ages 60 and 63 can continue making higher catch-up contributions of $11,250, the same amount allowed in 2025.

New catch-up rule impacts higher-income workers

Along with the higher limits, however, comes a rule change that may affect higher-income workers the most.

In the past, catch-up contributions could go into either traditional pre-tax 401(k)s or Roth 401(k)s. Starting in 2026, workers over age 50 who earned more than $145,000 in the previous year will generally need to make catch-up contributions to Roth 401(k)s, as per the Moneywise report.

Because Roth contributions are made with after-tax income, this shift could increase taxable income for higher earners. For those who rely on pre-tax contributions to lower their tax bill, the change may require adjustments to their retirement strategy.

Also read: Unpaid debts and Social Security: When can your benefits be garnished or protected?

Roth 401(k) vs. traditional 401(k): why it matters

Roth 401(k) contributions are made after taxes, but withdrawals including investment earnings are tax-free. Roth 401(k)s also do not require minimum distributions.

Traditional 401(k) contributions lower taxable income upfront, but withdrawals in retirement are taxed. Required minimum distributions apply, and failing to follow those rules can result in penalties.

Social Security taxes rise for high earners

Social Security is also changing in 2026, and the updates affect both high and low earners.

High earners will pay Social Security tax on more of their income. The wage base limit increases from $176,100 in 2025 to $184,500 in 2026, as per The Motley Fool report. That means workers earning at least $184,500 will owe Social Security tax on up to $8,400 more income.

At the 6.2% tax rate, that could raise a worker’s tax bill by as much as $520.80.

Also read: Social Security’s full retirement age is changing in 2026 — here’s what it means for you

Low earners face higher work credit requirements

Low earners could feel the impact of Social Security changes in a different way. To qualify for Social Security retirement benefits, workers must earn 40 work credits over their lifetime.

In 2025, one work credit was earned for every $1,810 in income, allowing workers to earn all four annual credits with $7,240 in earnings. In 2026, one credit will require $1,890 in earnings, meaning $7,560 is needed to earn all four credits.

For workers earning less, reaching that threshold may become more difficult. Missing work credits could eventually affect eligibility for Social Security benefits.

What workers can do now

These changes are already scheduled for 2026. While workers can’t stop them, they can prepare.

Higher earners may need to plan for increased Social Security taxes and rethink how they approach 401(k) contributions. Lower earners may want to closely monitor their income to ensure they earn enough to qualify for work credits.

With Social Security replacing about 40% of income, the updates highlight the importance of saving through retirement plans and other investments, as per The Motley Fool report.

FAQs

What is the 401(k) contribution limit for 2026?
The limit rises to $24,500, up from $23,500 in 2025.

How much can workers over 50 contribute in catch-up contributions?
They can contribute an additional $8,000 in 2026.