The SECURE 2.0 Act is still rolling out, and the 401(k) tax changes taking effect in 2026 and 2027 touch nearly every part of the account: how much you can defer, whether your catch-up contributions go in pre-tax or Roth, when you have to start withdrawing, and when you can pull money early without a penalty. The employee deferral limit rises to $24,500 for 2026, a mandatory Roth catch-up rule for high earners finally arrives in 2027, and a new federal match for lower-income savers begins that same year.
2026 Contribution Limits
For 2026, you can defer up to $24,500 of your salary into a traditional or Roth 401(k), a $500 increase over 2025.1Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500 The total annual addition to your account from all sources combined, including employer contributions, tops out at $72,000.
If you’re 50 or older, you can contribute an extra $8,000 on top of the base, bringing your personal deferral ceiling to $32,500. A “super catch-up” provision raises that further for workers aged 60 through 63, allowing an additional $11,250 instead of $8,000. Someone in that four-year window can defer up to $35,750 in 2026 if their plan permits it.1Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500 Once you turn 64, you drop back to the standard $8,000 catch-up.
Mandatory Roth Catch-Up for High Earners in 2027
This is the single biggest change to how catch-up contributions are taxed. Starting with the 2027 tax year, workers who earned more than a specified wage threshold from their employer in the prior calendar year must make all catch-up contributions on a Roth (after-tax) basis. The statutory base for that threshold is $145,000, adjusted annually for inflation. For 2026 wages, which determine your 2027 treatment, the threshold is $150,000.2Internal Revenue Service. 2026 Amounts Relating to Retirement Plans and IRAs, as Adjusted for Changes in Cost-of-Living
Under the original SECURE 2.0 timeline, this requirement was supposed to kick in for 2024. The IRS pushed it back twice to give plan administrators time to update their systems. The final regulations set the effective date at taxable years beginning after December 31, 2026, meaning 2027 is the first year it actually applies.3Internal Revenue Service. Treasury, IRS Issue Final Regulations on New Roth Catch-Up Rule, Other SECURE 2.0 Act Provisions
The practical effect: if your 2026 W-2 wages from the employer sponsoring your plan exceed $150,000, every dollar of catch-up you contribute in 2027 goes in after tax. You lose the upfront deduction on those contributions, but qualified withdrawals in retirement will be tax-free. Workers earning below the threshold can still choose between pre-tax and Roth catch-up contributions.4Office of the Law Revision Counsel. 26 USC 414 – Definitions and Special Rules If any of a plan’s participants are subject to this rule, the plan must offer a Roth catch-up option to everyone.
Required Minimum Distribution Age
Federal law requires you to start pulling money out of your 401(k) once you reach a certain age, whether you need it or not. Those withdrawals are taxed as ordinary income. If you turned 73 after December 31, 2022, the current required beginning age is 73. A second increase to age 75 is scheduled for January 1, 2033.
The extra years of deferral matter. Each year your money stays in the account, it compounds without an annual tax drag. Pushing the start date from 73 to 75 gives two more years of tax-deferred growth and two fewer years of mandatory taxable income, which can help keep you in a lower bracket early in retirement.
What Happens If You Miss One
Missing a required minimum distribution triggers an excise tax of 25% on the shortfall, meaning the difference between what you should have withdrawn and what you actually took out. That rate drops to 10% if you withdraw the missed amount and file a corrected return during the correction window. The correction window runs from the date the tax is imposed until the earlier of when the IRS sends a deficiency notice, assesses the tax, or the end of the second tax year after the year you missed the distribution.5Office of the Law Revision Counsel. 26 USC 4974 – Excise Tax on Certain Accumulations in Qualified Retirement Plans
If the shortfall was a genuine mistake rather than neglect, you can request a full waiver of the excise tax. File IRS Form 5329 and attach a written explanation describing what went wrong and what steps you’ve taken to fix it. The IRS looks for “reasonable error” and evidence that you’re correcting the problem.6Internal Revenue Service. Instructions for Form 5329 A missed distribution because your plan administrator sent the check to the wrong address is the kind of error that typically qualifies.
New Penalty-Free Early Withdrawal Categories
Pulling money from your 401(k) before age 59½ normally costs you a 10% additional tax on top of the regular income tax you’ll owe.7Internal Revenue Service. Substantially Equal Periodic Payments SECURE 2.0 added several exceptions to that penalty. In every case, the 10% penalty is waived but the withdrawal itself is still taxable income.
Emergency Personal Expenses
You can take a penalty-free distribution of up to $1,000 per calendar year for unforeseeable or immediate financial needs. The withdrawal is self-certified, so you don’t have to prove the emergency to your plan administrator. You have up to three years to repay the amount, and repaying it lets you avoid income tax on the distribution. If you don’t repay, you can’t take another emergency distribution for three calendar years.
Domestic Abuse Survivors
Victims of domestic abuse by a spouse or domestic partner can withdraw the lesser of $10,000 or 50% of their vested account balance without the 10% penalty.8Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions This provision has applied to distributions made after December 31, 2023. The amount can be repaid over three years, and any repaid portion is treated as a tax-free rollover.
Terminal Illness
If a physician certifies that you have an illness or condition reasonably expected to result in death within 84 months, you can access your 401(k) without the early withdrawal penalty. The certification must come from a doctor licensed to practice medicine or osteopathy, include a description of the supporting evidence, and be dated no later than the distribution date. You cannot self-certify. If your plan hasn’t formally adopted this provision, you can still claim the penalty exemption on your tax return using Form 5329, but you’ll need to keep the physician’s certification in your records.8Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
Roth Treatment for Employer Contributions
Employer matching and nonelective contributions have traditionally been pre-tax, meaning you owe income tax on them when you withdraw in retirement. Since 2023, plans can offer participants the option to receive some or all of those employer contributions as Roth instead. If you elect Roth treatment, the employer’s contribution is included in your gross income for the year it’s made, but qualified withdrawals later are tax-free.
Here’s the wrinkle. Payroll taxes aren’t withheld on Roth employer contributions the way they are on your Roth salary deferrals. The amount shows up on a Form 1099-R at year-end rather than flowing through your regular paychecks. That can create a surprise tax bill if you haven’t adjusted your W-4 withholding to account for the extra income. This is an optional plan feature, so it’s only available if your employer has updated the plan to include it.
Student Loan Payments Count for Matching
Employers can now treat your student loan payments as if they were 401(k) contributions for matching purposes. If you’re spending $500 a month on student loans and can’t afford to also contribute to your 401(k), your employer can deposit a match into your retirement account based on those loan payments. You don’t have to contribute anything to the plan yourself to get the match.9Internal Revenue Service. Internal Revenue Service Notice 2024-63
The combined total of your student loan payments counted for matching plus any actual 401(k) deferrals cannot exceed the annual elective deferral limit ($24,500 for 2026).9Internal Revenue Service. Internal Revenue Service Notice 2024-63 Only payments on “qualified education loans” count, which generally means debt incurred to pay for higher education expenses for you, your spouse, or a dependent. Refinanced loans qualify, but loans from relatives or from an employer plan do not.10Legal Information Institute. 26 USC 221(d)(1) – Qualified Education Loan Definition
You self-certify your loan payments to your employer each year, and employers can rely on that certification. The matching contributions follow the same vesting schedule as traditional 401(k) matches. This is optional for employers, not a mandate, so check whether your plan has adopted it.
The Federal Saver’s Match Starting in 2027
Beginning in 2027, the federal government will directly deposit matching funds into eligible workers’ retirement accounts, including 401(k) plans. This Saver’s Match largely replaces the existing Saver’s Credit, which currently provides a tax credit on your return. The match goes straight into your retirement account rather than reducing your tax bill on paper, which is far more useful for low-income savers who often owe little or no tax anyway.11Congress.gov. The Retirement Savings Contribution Credit and the Saver’s Match
The government will match 50% of your retirement contributions on up to $2,000 in savings, for a maximum match of $1,000 per year. To get the full match, your modified adjusted gross income must be below $20,500 ($41,000 for married couples filing jointly). A reduced match phases in for individuals earning up to $35,500 ($71,000 for joint filers). Those income thresholds will adjust for inflation after 2027.11Congress.gov. The Retirement Savings Contribution Credit and the Saver’s Match Employer-sponsored plans are not required to accept these deposits, so whether you can receive the match through your 401(k) depends on your plan’s decision to opt in.
A Note on Access Rules
Two other SECURE 2.0 provisions change who gets into a 401(k) rather than how it’s taxed. Most plans established after December 29, 2022, must auto-enroll eligible employees at a default rate between 3% and 10%, with annual auto-escalation, though businesses with 10 or fewer employees and companies less than three years old are exempt.12Congress.gov. H.R. 2954 – Securing a Strong Retirement Act of 2022 And long-term part-time workers who complete at least 500 hours in each of two consecutive years must now be allowed to participate, a rule that first applied to plan years beginning after December 31, 2024. Neither changes your tax treatment, but both may change whether you have a plan to contribute to in the first place.