The Roth Catch-up Rule is Live: What High-Earning Employees (And Their Employers) Need to do Now

As of January 1, 2026, a provision of the SECURE 2.0 Act has fundamentally changed how catch-up contributions work for higher-earning retirement plan participants. If you earn more than $150,000 in FICA wages, your catch-up contributions must now go into a Roth account — meaning you pay taxes on this money now rather than in retirement. There is no pre-tax option. 

This is no longer a future deadline; it is the current operating reality for every 401(k) plan that permits catch-up contributions. 

What makes this provision unusual is that it sits squarely at the intersection of corporate plan compliance and personal financial planning. If you're a plan sponsor, this is a fiduciary and operational obligation. If you're a high-earning individual, this is a tax planning decision with real long-term consequences. And if you're both — a business owner or partner in a professional services firm — this single rule touches every dimension of your financial life. 

Part One: What Plan Sponsors Need to Confirm Right Now 

The mandatory Roth catch-up rule applies to any retirement plan that offers catch-up contributions to participants age 50 and older. If any of those participants earned more than $150,000 in FICA wages from your organization in 2025, their 2026 catch-up contributions must be designated as Roth. 

The threshold is based on prior-year W-2 Box 3 (Social Security wages) — not total compensation, not household income, and not wages from another employer. It is specific to what your organization paid that individual. 

If your plan does not currently offer a Roth contribution option, those high-earning participants cannot make catch-up contributions at all. They don't get to make them pre-tax instead. They simply lose the benefit. 

What should already be in place 

Because the rule is now effective, plan sponsors should be confirming the following: 

• Roth feature. Your plan document must permit designated Roth contributions. As of year-end 2024, roughly 86% of Vanguard-administered plans offered this feature. If yours doesn't, this needs to be addressed immediately. 

• Payroll coordination. Your payroll system or payroll provider must be able to identify which participants exceeded the $150,000 FICA wage threshold in the prior year and route their catch-up contributions accordingly. This is a new data requirement that many payroll systems weren't originally designed to handle. 

• Recordkeeper alignment. Your recordkeeper should be correctly applying mandatory Roth treatment once a participant's elective deferrals exceed the standard $24,500 limit. Many recordkeepers are adopting a "deemed Roth catch-up election" approach, which automatically treats excess deferrals as Roth catch-ups for affected participants. Confirm how your recordkeeper is handling this. 

• Participant communications. Affected participants need to understand what has changed, why their take-home pay may look slightly different, and what this means for their tax situation. Generic notices are unlikely to be sufficient for your most senior employees. 

• Correction procedures. If pre-tax catch-ups are made in error for a participant who should be subject to mandatory Roth treatment, the IRS allows correction via either a Form W-2 adjustment (if the W-2 hasn't been filed yet) or an in-plan Roth rollover. Having a documented correction process now is far better than scrambling later. 

The optional super catch-up: a related but separate decision 

The enhanced catch-up limit for participants ages 60 through 63 is a different provision — and it is optional. Plan sponsors are not required to offer it. 

If your plan does offer the super catch-up, those enhanced contributions (up to $11,250 in 2026, compared to $8,000 for standard catch-ups) are also subject to the mandatory Roth rule for high earners. The two provisions interact, and they should be evaluated together. 

One important wrinkle for organizations with related entities: if any single employer within a controlled group adopts the super catch-up, all other plans in that group may be required to offer it as well, under the universal availability rule. This can create coordination challenges for multi-entity businesses. 

Plan document amendments reflecting both the mandatory Roth catch-up and the super catch-up (if adopted) must be executed by December 31, 2026 for most plans, with extended deadlines for governmental and collectively bargained plans.  

More than compliance – it is about employee retention, too  

For law firms, medical practices, technology companies, financial services firms, and other organizations where many employees exceed the $150,000 threshold, the stakes are disproportionately high. 

If your plan doesn't offer Roth contributions, your senior professionals, partners, and executives have effectively lost the ability to make catch-up contributions. In 2026, that's $8,000 in tax-advantaged savings or $11,250 if you've adopted the super catch-up for those ages 60 to 63.  

For a 62-year-old senior partner, that's $35,750 in total potential employee deferrals ($24,500 standard plus $11,250 super catch-up) that your plan either supports or doesn't. 

These are the employees you can least afford to frustrate with a preventable plan design gap. 

Part Two: What This Means for You Personally 

For business owners and high-earning employees, the compliance story above has a direct personal dimension.  The mandatory Roth catch-up rule changes how your plan operates, and it also changes the tax treatment of your own retirement savings. 

What actually changed for you 

Prior to 2026, if you were age 50 or older and making catch-up contributions, you could choose whether those contributions were pre-tax (reducing your current taxable income) or Roth (paying taxes now, but getting tax-free growth and withdrawals in retirement). 

That choice is gone. If your 2025 FICA wages from your employer exceeded $150,000, every dollar of catch-up contributions in 2026 must be Roth. Your regular contributions — up to $24,500 — can still be either pre-tax or Roth at your election. But the additional $8,000 in catch-up contributions (or $11,250 if you're age 60 to 63 and your plan offers the super catch-up) must be after-tax.  

The numbers in 2026 

Here's how the contribution landscape looks this year, depending on your age: 

• Age 50 to 59, or 64 and older: Standard deferral limit of $24,500, plus a mandatory-Roth catch-up of $8,000, for a total of $32,500 in employee contributions. 

• Age 60 to 63 (if your plan offers the super catch-up): Standard deferral limit of $24,500, plus a mandatory-Roth super catch-up of $11,250, for a total of $35,750 in employee contributions. 

In both cases, the catch-up portion must be Roth if you're above the income threshold. The standard deferral portion is still your choice. 

Is mandatory Roth actually bad for you? 

 This is where the conversation shifts from compliance to financial planning. Whether or not the mandatory Roth is good or bad for you depends on your personal situation. 

Roth treatment could work in your favor if: 

You expect your tax rate in retirement to be as high or higher than it is now. This is increasingly common for high earners with significant pre-tax retirement account balances, taxable investment income, Social Security income, and potential future tax rate increases. Tax rates under current law (as modified by the One Big Beautiful Bill Act) are scheduled to adjust again after 2033. Paying taxes now at a known rate, rather than later at an unknown rate, can be a form of tax diversification. 

 Roth accounts also offer a meaningful estate planning advantage: they are not subject to required minimum distributions during the account owner's lifetime under current rules, and qualified withdrawals by beneficiaries are tax-free. For high-net-worth individuals who don't expect to need every dollar in retirement, Roth accounts provide a uniquely efficient wealth transfer vehicle. 

Roth treatment may be less favorable if: 

You expect to be in a significantly lower tax bracket in retirement — perhaps because you plan to stop working entirely, relocate to a state with no income tax, or have limited other income sources. In that scenario, you would have paid taxes at a high rate on contributions that could have been taxed at a lower rate upon withdrawal. 

The planning opportunity most people miss: 

Because your regular contributions up to $24,500 can still be pre-tax, the mandatory Roth rule creates a natural opportunity to rethink your overall contribution strategy. Some high earners may benefit from shifting more of their standard contributions to Roth as well, while others may want to preserve the pre-tax benefit on the base contribution to partially offset the forced Roth treatment on the catch-up. 

The right answer depends on your current marginal tax rate, your expected retirement income, your state tax situation, your other sources of Roth savings (such as Roth IRA conversions or backdoor Roth strategies), and your broader estate plan. This is not a decision that should be made in isolation.  

A note for business owners specifically 

For business owners, what appears to be a compliance requirement can quickly become a personal planning matter. 

If you are both the plan sponsor and a participant — common in closely held businesses, professional practices, and partnerships — the Roth catch-up rule affects you on both sides of the table. As the sponsor, you have a fiduciary obligation to ensure the plan is operating correctly. As a participant, you have a personal financial interest in how that plan is designed. 

If your plan didn't add Roth contributions before January 1, you may have inadvertently eliminated your own catch-up contributions. If you're age 60 to 63 and the plan hasn't adopted the super catch-up, you're leaving up to $11,250 in additional tax-advantaged savings on the table annually during a narrow four-year window that doesn't come back. 

There's also a subtlety for partners and self-employed individuals: the mandatory Roth rule is based on FICA wages reported on W-2 Box 3. If you receive only self-employment income (for example, as a partner receiving guaranteed payments), you may not be subject to the mandatory Roth requirement at all — your catch-up contributions could still be either pre-tax or Roth. This is a nuance worth confirming with your tax advisor. 

Part Three: Why the Right Advisor Sees Both Sides 

This article has covered two distinct but connected sets of questions. On the plan sponsor side: Is your plan compliant? Is your recordkeeper handling the new rules correctly? Are your highest-value employees losing benefits because of a plan design gap? On the personal side: What does mandatory Roth treatment mean for your tax strategy? How does it fit within your broader retirement income and estate plan? 

Most advisory relationships address one side or the other. Your retirement plan advisor helps with compliance and plan design. Your personal financial advisor helps with tax planning, investment strategy, and estate planning considerations. But for business owners, executives, and senior professionals, these are the same conversation. 

The Roth catch-up rule is a clear example. A plan sponsor decision (whether to offer Roth, whether to adopt the super catch-up) directly shapes the personal financial options available to the individuals who work there — often including the owner making the decision. 

At The Advisory Group of San Francisco, our work spans retirement plan services and personal wealth management precisely because decisions like this one don't happen in isolation. We help plan sponsors fulfill their fiduciary responsibilities while also helping individuals work through the personal financial implications with independent, fee-only advice that serves both interests. 

If you're a plan sponsor wondering whether your plan is operating correctly under the new rule, or a high-earning professional trying to figure out what mandatory Roth treatment means for your own retirement planning, we'd welcome the conversation. 

Quick Reference: 2026 Roth Catch-Up Contribution Rules