Most people set up their 401(k) once and then quietly forget about it. They pick a contribution rate, choose a fund or two, and let the whole thing run on autopilot. That strategy worked fine for a long time. But there’s a significant piece of legislation that has been quietly rearranging the rules of the game, and if you haven’t updated your thinking since it passed, you may be leaving real money on the table, or making decisions based on rules that no longer apply.
The law is called the SECURE 2.0 Act, and it was signed in late 2022. But the bulk of its most consequential changes have been rolling out across 2024, 2025, and 2026, meaning right now. Many of the shifts are genuinely worker-friendly. Some create new responsibilities. A few will directly affect how much you owe in taxes during your retirement years. Most Americans know almost none of them.
Whether you’re 40 and building wealth, 55 and trying to accelerate savings, or 65 and figuring out when to start drawing down, at least one of these changes probably affects your situation today. Here’s what’s different and what it means for your money.
1. Your New Employer May Now Automatically Enroll You
If you started a new job recently at a company that set up its 401(k) plan after December 29, 2022, you may already be enrolled without ever having filled out a form. The SECURE 2.0 Act requires all 401(k) and 403(b) plans established after that date to automatically enroll participants in their plans upon becoming eligible.
The default contribution rate must fall between 3% and 10% of compensation. If the initial rate starts below 10%, the plan must automatically increase it by at least 1% each year until it reaches at least 10%, but no more than 15%. In other words, not only are you enrolled without asking, your contribution rate will keep climbing year after year unless you step in and change it.
Auto-enrollment is a feature that automatically enrolls eligible employees in their company’s retirement plan unless they actively choose to opt out. That “opt out” language matters. The burden has shifted. In the past, you had to take action to start saving. Now you have to take action to stop. Research consistently shows this dramatically increases participation, especially among younger and lower-income workers.
Some businesses are exempt from this mandate, including businesses that do not normally employ more than 10 employees, businesses that established a workplace plan before December 29, 2022, and businesses that have operated for less than three years. So if your employer’s plan predates 2022, this particular rule doesn’t apply to them. Check with your HR department to understand what your specific plan requires.
2. You Can Now Pull $1,000 from Your 401(k) in an Emergency Without a Penalty
This one is significant for anyone living paycheck to paycheck, or simply anyone who has ever faced an unexpected car repair, medical bill, or urgent home expense. Since January 1, 2024, a rule allows retirement plan owners to withdraw up to $1,000 for unspecified personal or family emergency expenses, penalty-free, if their plan allows.
Before this change, pulling money out of a 401(k) before age 59½ meant paying a 10% early withdrawal penalty on top of any income taxes owed. Typically, when you take money from a 401(k) before age 59½, you’re assessed a 10% penalty on top of federal and state taxes owed. The emergency withdrawal provision eliminates that penalty for amounts up to $1,000. You still owe income tax on the withdrawal, but the extra 10% hit disappears.
There are real limits to keep in mind. You can only make one $1,000 withdrawal per year. If you don’t replace that amount in full or through regular deposits within three years, you won’t be able to make another $1,000 emergency withdrawal during that repayment period. You also need to self-certify in writing that the withdrawal is for a genuine emergency. Not every employer has opted into this provision either, so confirm with your plan administrator before counting on it.
This is a useful safety net, but it’s worth being honest with yourself about how you use it. Making this type of emergency withdrawal to pay for a one-off unexpected bill may be better than racking up expensive credit card debt, but overuse can derail long-term retirement savings. Think of it as a financial airbag – good to have, but not something you want to deploy routinely.
3. High Earners Over 50 Must Now Route Catch-Up Contributions Through a Roth Account
This is the change that will catch the most people off guard, and it affects higher earners specifically. If you’re 50 or older and earn a solid income, the way you make catch-up contributions to your 401(k) just changed. Beginning in 2026, the SECURE 2.0 Act requires “high earners” to make catch-up contributions on a Roth basis. A participant is considered a high earner for 2026 if they received more than $150,000 in FICA wages in 2025.
A quick clarification: FICA wages are the wages subject to Social Security and Medicare taxes, essentially your regular employment income. And “Roth” means after-tax money. So instead of getting a tax deduction for those additional contributions today, you pay taxes on them now and receive the money tax-free in retirement.
The IRS issued final regulations in September 2025 addressing these catch-up contribution provisions. Catch-up contributions are additional contributions available under a 401(k) for employees who are age 50 or older. The final regulations include rules requiring that catch-up contributions made by certain higher-income participants be designated as after-tax Roth contributions.
The practical impact is meaningful. If you earn above the threshold and were counting on catch-up contributions to reduce your taxable income this year, that strategy no longer works. The money still grows in your account and still benefits from compounding, but the tax advantage shifts from today to retirement. For people who expect to be in a lower tax bracket in retirement, this could actually work against them. Talk to a tax advisor or financial planner before making assumptions about how this change affects your specific situation. The Roth catch-up rule takes effect in 2026, but the IRS is allowing plans to comply based on a reasonable, good-faith interpretation until formal regulations apply in 2027.
4. Workers Aged 60 to 63 Get a Supersized Savings Window
Here’s one of the most generous additions in the entire law, and one that deserves far more attention than it gets. Workers in a very specific age window now qualify for contributions that go well beyond the standard catch-up limits. As of January 1, 2025, individuals attaining ages 60 through 63 during the calendar year are able to make catch-up contributions to eligible retirement plans of $11,250, in place of their normal catch-up limit.
To understand why this matters, consider the normal contribution structure. The annual contribution limit for employees who participate in 401(k) plans is $24,500 for 2026. Standard catch-up contributions for those 50 and older add another $8,000. But if you’re in the 60-to-63 bracket, participants aged 60, 61, 62, or 63 can contribute up to $34,750 in 2025, which breaks down as $23,500 plus the enhanced $11,250 catch-up amount.
The enhanced catch-up applies only during the participant’s 60th through 63rd years. Once an individual reaches age 64, the limit reverts to the standard catch-up amount. That four-year window is intentionally narrow, designed to let workers make a final push before the traditional retirement years. If you or someone you know falls into this age range right now, this could be one of the most valuable retirement moves available. Note that not all plans are required to offer this enhanced limit, so check with your employer to confirm whether yours does.
5. Required Minimum Distributions Now Start Later – and Will Get Even Later
For retirees and near-retirees, the rules around required minimum distributions (RMDs) have changed significantly. An RMD is the minimum amount the IRS requires you to withdraw each year from tax-deferred retirement accounts. The government wants to ensure that money eventually gets taxed, so they set a mandatory start age.
Required minimum distributions are the minimum amounts you must withdraw from your retirement accounts each year. You generally must start taking withdrawals from your traditional IRA, SEP IRA, SIMPLE IRA, and retirement plan accounts when you reach age 73. Before the SECURE 2.0 Act, that age was 72. Before the original SECURE Act of 2019, it was 70½.
Beginning in 2033, the RMD age will rise again to 75. Specifically, the beginning age for RMDs is 73 for those born from 1951 through 1959 and is 75 for those born in 1960 or later.
Why does this matter practically? Every additional year you don’t have to take an RMD is a year your money keeps growing tax-deferred. Pushing the RMD start date from 72 to 73, and eventually to 75, creates more tax planning opportunities. Since these distributions represent taxable income, delaying mandatory income could allow individuals the opportunity to process larger Roth conversions during the retirement years, which can be an excellent tax and wealth-building strategy.
One more useful update from the IRS: if you miss an RMD or fall short of the required amount, the penalty dropped from 50% to 25% of the undistributed amount, and can be as low as 10% if corrected promptly.
6. Part-Time Workers Can Now Join a 401(k) Sooner
Tens of millions of Americans work part-time, and for years, most of them were effectively locked out of employer-sponsored retirement plans. SECURE 2.0 has changed that in a meaningful way. The original SECURE Act of 2019 expanded eligibility for contributing to an employer’s 401(k) plan to include long-term part-time workers who complete three consecutive years of service with at least 500 hours of service each year. SECURE 2.0 reduces that service requirement to two years.
This expansion in eligibility covers part-time workers who have completed at least 500 hours of service for two consecutive years. For context, 500 hours is roughly equivalent to working 10 hours per week throughout a full year, well within the range for many retail, hospitality, healthcare support, and gig-adjacent workers who hold consistent part-time positions.
To make this work, employers need to track part-time and seasonal employees’ hours in payroll, identify any employees who have hit the 500-hour mark for two years in a row, and enroll eligible employees once they meet the threshold on the next normal entry date. If you’re a part-time worker who has been with an employer for two or more years and hasn’t been offered 401(k) access, ask your HR department specifically about this provision. You may already qualify.
This change is particularly significant for women, who make up a disproportionate share of the part-time workforce, as well as workers who scaled back hours to manage caregiving responsibilities. Access to a tax-advantaged retirement account, even in a limited capacity, can make a substantial long-term difference in retirement security.
Read More: Retirement Savings Goals: How Much You Should Have at Every Age
What This Means for You
SECURE 2.0 is one of the most comprehensive overhauls of retirement savings rules in decades, and the changes are spread across multiple years, which is exactly why so many people are still unaware of them. The six shifts covered here are active right now, not hypothetical future reforms, but current rules that should inform how you contribute, how you plan your tax strategy, and when you expect to start drawing down.
Start by checking in with your current plan. Find out what your default contribution rate is and whether automatic escalation is already increasing it each year. Confirm whether your employer offers the emergency withdrawal option, and if so, what the self-certification process looks like. If you’re approaching traditional retirement age and have not yet spoken with a financial planner about the updated RMD timeline, that conversation is worth having soon. The gap between age 73 and 75 for mandatory distributions creates real Roth conversion opportunities that most people walk past without realizing it.
If you’re in the 60-to-63 age window right now, take a close look at whether your plan offers the enhanced $11,250 catch-up limit. If your employer hasn’t adopted it yet, ask directly. And if you’re a high earner who was relying on pre-tax catch-up contributions to lower your taxable income, you’ll want to talk to a tax professional before the 2026 Roth requirement fully takes hold. These rules exist to help more people build financial stability over their working lives. But they only help if you know they’re there.
Read More: 5 Mistakes to Avoid in Your First Year of Retirement
Disclaimer: This information is not intended to be a substitute for professional financial advice, investment advice, tax advice, or legal advice, and is provided for informational purposes only. Always seek the guidance of a qualified financial advisor, accountant, or other licensed professional regarding your personal financial situation or investment decisions. Do not make financial, investment, or tax decisions based solely on information presented here. Past performance is not indicative of future results, and all investments carry risk, including the potential loss of principal.
AI Disclaimer: This article was created with the assistance of AI tools and reviewed by a human editor.