The IRA and 401(k) Rules Changed Again in 2026. Here’s Every Number That Affects Your Retirement — and the Four Mistakes That Cost Retirees the Most.

WASHINGTON, April 30, 2026 —

Key Takeaways

• The IRA contribution limit increased to $7,500 in 2026 — up $500 from 2025 — while the 401(k) employee contribution limit rose to $24,500, the largest combined increase in the adjusted limits since SECURE 2.0 passed in 2022.
• Workers aged 60 to 63 can now make a super catch-up contribution of up to $11,250 to their 401(k) — $3,250 more than the standard catch-up — a provision that took effect this year and that most workers in that age bracket have not yet utilized.
• High earners with W-2 wages above $145,000 from a single employer in 2025 must now make their 401(k) catch-up contributions as Roth contributions rather than pre-tax — a mandatory change that was delayed twice and finally took full effect January 1, 2026.

Every Limit That Changed — Side by Side

The increases are driven by inflation indexing — the IRS adjusts retirement account limits annually based on cost-of-living data. For most savers, the $500 IRA increase and $1,000 401(k) increase are modest. For a household where both spouses maximize their IRAs and both have access to workplace 401(k) plans, the combined additional savings capacity in 2026 is $3,000 over last year — money that grows tax-advantaged from the day it is contributed.

The Mandatory Roth Catch-Up — The Change Most High Earners Missed

This is the rule change that has generated the most confusion among workers approaching retirement age — and the most costly surprises for those who did not prepare.

Beginning January 1, 2026, any worker who earned more than $145,000 in W-2 wages from a single employer in 2025 and who wants to make catch-up contributions to their 401(k), 403(b), or governmental 457(b) plan must make those contributions as Roth — meaning after-tax dollars — rather than traditional pre-tax contributions.

The practical impact: a 55-year-old executive earning $200,000 who previously made the full $8,000 catch-up contribution as a pre-tax deduction now cannot do so. The $8,000 must go into the Roth side of the plan, if the plan offers one. If the plan does not offer Roth contributions, the worker loses the ability to make catch-up contributions entirely until the plan is amended.

This matters for three reasons. First, it removes a tax deduction that high-earning older workers have relied on for years to reduce their current taxable income. Second, it requires many employers to update their payroll systems and plan documents — a process that some smaller employers have not completed. Third, it changes the timing of when taxes are paid on that money. Pre-tax catch-up contributions defer taxes until withdrawal. Roth contributions pay taxes now in exchange for tax-free growth and distributions.

Whether the Roth treatment is better or worse financially depends entirely on whether your current tax rate is higher or lower than your expected rate in retirement. For most workers in the $145,000 to $250,000 income range, the current-versus-future tax rate comparison is genuinely uncertain — which means the decision deserves careful modeling, not a default response.

The Super Catch-Up That Ages 60 to 63 Are Leaving on the Table

One of the most powerful provisions in SECURE 2.0 — one that surveys suggest most eligible workers are not utilizing — is the super catch-up contribution available to workers between the ages of 60 and 63.

Workers in this specific age window can contribute up to $11,250 as a catch-up contribution to a 401(k) or 403(b) plan in 2026, compared to the standard catch-up of $8,000 available to workers aged 50 to 59 and 64 and older. That is a $3,250 difference — additional tax-advantaged savings capacity that disappears the moment the worker turns 64.

The window is narrow by design. It applies only to ages 60, 61, 62, and 63. At 64, the catch-up drops back to the standard amount. A worker who turns 60 in 2026 and maximizes the super catch-up every year through age 63 can direct an additional $13,000 in total into their retirement account compared to someone using the standard catch-up — before accounting for any investment returns on those contributions.

Most workers in this window are unaware the provision exists. Employer plan communications have been inconsistent in flagging it, and many payroll systems have not been updated to surface the option automatically. If you are between 60 and 63 and contributing to a workplace retirement plan, confirm explicitly with your plan administrator that you are capturing the super catch-up amount — not just the standard one.

Roth IRA Income Limits — Who Can Contribute in 2026

Roth IRA eligibility is income-restricted. The limits increased in 2026, which means some households that were phased out in 2025 may be eligible for a full or partial Roth IRA contribution this year.

High earners above the Roth IRA income limit can still access Roth accounts through two mechanisms: the backdoor Roth IRA — making a nondeductible traditional IRA contribution and immediately converting it to Roth — and, for those with workplace plans offering after-tax contributions and in-plan conversions, the mega backdoor Roth, which can allow total 401(k) contributions approaching $72,000 in 2026.

Both strategies require careful execution. The backdoor Roth is complicated by the pro-rata rule for anyone who holds other traditional IRA balances. The mega backdoor requires a plan that allows after-tax contributions and in-plan Roth conversions — features that not all employers offer.

The Four RMD Mistakes That Cost Retirees the Most

Required minimum distributions — mandatory annual withdrawals from traditional IRAs and most workplace retirement accounts — must begin at age 73. Missing or miscalculating an RMD triggers a 25% excise tax on the shortfall, reduced to 10% if corrected within two years. Here are the four mistakes that generate the most avoidable tax bills:

Mistake 1: Treating the April 1 first-year deadline as permanent. The first RMD can be delayed until April 1 of the year following the year you turn 73. But delaying the first RMD means taking two RMDs in the same calendar year — the delayed first one and the regular second one — which can push you into a higher tax bracket and trigger IRMAA surcharges on Medicare premiums. Most retirees are better served taking the first RMD in the year they turn 73 rather than delaying it.

Mistake 2: Calculating one RMD for multiple accounts but withdrawing from the wrong type. Traditional IRA RMDs can be aggregated across multiple IRA accounts and withdrawn from any one or combination of them. But 401(k) RMDs cannot be aggregated with IRA RMDs — each 401(k) account requires its own separate withdrawal. Retirees with both IRAs and old 401(k) accounts frequently miscalculate by treating them as interchangeable.

Mistake 3: Forgetting inherited IRA RMDs. Non-spouse beneficiaries who inherited IRAs after 2019 are subject to the 10-year rule — the entire account must be distributed by December 31 of the tenth year after the original owner’s death. The IRS has issued confusing and repeatedly revised guidance on whether annual distributions are required during the 10-year period or only by the final year. The current rule for most non-eligible designated beneficiaries requires annual RMDs during the 10-year period if the original owner had already begun taking distributions.

Mistake 4: Missing the qualified charitable distribution opportunity. Retirees aged 70½ or older can donate up to $108,000 directly from their IRA to a qualified charity in 2026 as a qualified charitable distribution. The QCD counts toward satisfying the RMD requirement but is excluded from taxable income — a significantly better tax outcome than taking the RMD as income and then making a charitable deduction. For retirees who give regularly to charity, this is one of the highest-leverage tax moves available and one of the most consistently underused.

Pro Tips a Generic Article Would Miss

1. The mandatory Roth catch-up rule applies to your 2025 W-2 — not your 2026 income. The $145,000 threshold is based on wages reported in Box 3 of your W-2 from a single employer in the prior year. If you earned $150,000 in 2025 from one employer, your 2026 catch-up must be Roth regardless of what your 2026 income turns out to be. Check your 2025 W-2 now to determine which rules apply to your current year contributions — most workers in this situation have not done this calculation.

2. If you are 60 to 63 and your employer’s plan does not yet offer the super catch-up, file a written request with your HR department immediately. Plan administrators are required to offer the super catch-up if the plan allows catch-up contributions generally. If your plan documents have not been updated, your request creates a paper trail and may accelerate the amendment process. Every month you delay is a month of additional tax-advantaged savings capacity lost permanently.

3. A QCD used to satisfy an RMD also reduces your adjusted gross income — which can lower your Medicare IRMAA surcharge, reduce the taxability of your Social Security benefits, and keep you below the threshold for the new $6,000 senior tax deduction. The QCD’s benefit is not just the charitable deduction — it is the cascade of income-sensitive provisions it affects downstream. A $30,000 QCD in a year where your MAGI is near an IRMAA threshold or near the Social Security taxation threshold can save more in taxes than the QCD itself is worth as a deduction.

The single most valuable action any retirement saver can take today is to verify two things with their plan administrator: whether they are capturing the correct catch-up contribution amount for their age — super catch-up if 60 to 63, standard catch-up if 50 to 59 — and whether their catch-up contributions are being correctly designated as Roth if their prior year W-2 wages from a single employer exceeded $145,000. Both answers require a direct conversation with HR or the plan administrator. Both can be resolved in a single five-minute phone call. The cost of getting either wrong ranges from lost tax-advantaged savings to unexpected tax bills — neither of which reverses easily once the calendar year closes.

Frequently Asked Questions

Q: What is the IRA contribution limit for 2026? A: The IRA contribution limit for 2026 is $7,500 for individuals under age 50 and $8,600 for those 50 and older. This applies to both traditional and Roth IRAs combined — you cannot exceed the limit across both account types.

Q: What is the 401(k) contribution limit for 2026? A: The employee contribution limit for 401(k), 403(b), and most 457(b) plans is $24,500 in 2026. Workers aged 50 to 59 and 64 and older can add an $8,000 catch-up contribution for a total of $32,500. Workers aged 60 to 63 can make a super catch-up of $11,250 instead, for a total of $35,750.

Q: Who must make Roth catch-up contributions in 2026? A: Workers whose W-2 wages from a single employer exceeded $145,000 in 2025 must make catch-up contributions to their 401(k), 403(b), or governmental 457(b) as Roth contributions in 2026. Pre-tax catch-up contributions are not available to these workers unless their plan does not offer Roth contributions, in which case they may be unable to make catch-up contributions at all until the plan is amended.

Q: When do required minimum distributions begin? A: RMDs begin at age 73 under current law. Your first RMD is due by April 1 of the year following the year you turn 73. All subsequent RMDs are due by December 31 of each year. The penalty for failing to take a required distribution is 25% of the amount not withdrawn, reduced to 10% if corrected within two years.

Q: What is the Roth IRA income limit for 2026? A: Single filers can make a full Roth IRA contribution if their modified adjusted gross income is below $153,000, with a phase-out between $153,000 and $168,000. Married filing jointly filers can make a full contribution below $242,000, with a phase-out between $242,000 and $252,000.