SECURE 2.0 Act: What Changed and What It Means for Your Retirement Plan

Congress passed the SECURE 2.0 Act in December 2022 as part of the Consolidated Appropriations Act. It contains 92 provisions. Most are narrow adjustments to plan administration rules. A handful are consequential enough that every person planning for retirement should understand them.

This article covers the changes that most directly affect individual retirement planning: when RMDs begin (and how your birth year determines the answer), catch-up contribution limits and the new Roth requirement for high earners, the 529-to-Roth rollover and its detailed rules, and a summary of the other provisions worth knowing.

RMD Age Changes — The Most Widely Felt Provision

SECURE 2.0 continued the trend of raising the Required Minimum Distribution starting age — first set at 70½, raised to 72 by SECURE 1.0 in 2020, and now moving to 73 (effective 2023) and ultimately to 75 (effective 2033).

The rule is straightforward: your birth year determines which starting age applies. There is no phase-in or partial application — you use one age or the other.

• Born 1950 or earlier: RMDs already underway under prior law — no change.
• Born 1951–1959: RMD age is 73. First RMD is due by April 1 of the year after you turn 73.
• Born 1960 or later: RMD age will be 75 — but this does not take effect until 2033.

The practical implication is straightforward: every additional year before RMDs begin is a year of uninterrupted tax-deferred (or tax-free, for Roth accounts) growth. It is also a year available for Roth conversions at a lower income level — before RMDs push taxable income higher. For a retiree born in 1960, the shift from age 72 to 75 represents three additional years of Roth conversion runway before mandatory IRA distributions begin.

The Two-RMD-Year Trap

The first RMD does not have to be taken in the year you turn 73 — you may defer it until April 1 of the following year. This flexibility sounds like a benefit, but frequently isn't.

If you defer the first RMD to April 1, you must still take the second RMD by December 31 of the same year. Two distributions in one calendar year double the ordinary income recognized — potentially pushing income into a higher federal bracket, triggering Medicare IRMAA surcharges the following year, and increasing the provisional income calculation for Social Security taxation.

In most cases, taking the first RMD in the year you turn 73 and the second in the following year prevents this bunching. Only defer the first RMD if your income situation specifically makes the year-of-turning-73 a better recognition year than the following one.

Roth 401(k) and 403(b) RMDs Eliminated

Beginning January 1, 2024, Roth accounts inside 401(k) and 403(b) plans are no longer subject to RMDs during the owner's lifetime. This aligns Roth workplace accounts with Roth IRAs, which have never required lifetime distributions.

The change is significant for retirees who hold substantial Roth 401(k) balances. Previously, a retiree with a $400,000 Roth 401(k) was forced to take annual distributions from the account even if they did not need the income — potentially complicating tax planning. Now those balances can grow untouched, be used for strategic income supplementation, or pass directly to heirs.

Retirees who rolled their Roth 401(k) to a Roth IRA solely to avoid RMDs no longer need to do so — but the Roth IRA rollover still offers other advantages (broader investment options, typically lower fees) that may still make it the right choice.

Catch-Up Contributions — Two Major Changes

SECURE 2.0 made two distinct changes to catch-up contributions, and they work independently of each other.

The Super Catch-Up for Ages 60–63

Starting in 2025, participants who turn 60, 61, 62, or 63 during the plan year can contribute a higher catch-up amount — the greater of $10,000 or 150% of the standard catch-up limit. In 2026, the standard catch-up is $8,000, so the age 60–63 super catch-up is $11,250 — versus $8,000 for everyone else age 50+.

Combined with the $23,500 base limit, this means someone turning 60–63 in 2026 can contribute up to $34,750 to their 401(k) — the highest annual contribution ceiling in the plan's history.

The window is brief and intentional: it applies only in the four years from 60 to 63. At 64, the contribution limit drops back to the standard catch-up of $8,000. These four years, which overlap with the Roth conversion window before RMDs begin and the peak of many retirees' earning years, represent one of the highest-value contribution opportunities in the entire retirement planning lifecycle.

The Roth Catch-Up Mandate for High Earners

Beginning with plan years starting after December 31, 2026 (i.e., calendar year 2027 for most plans, after IRS finalized regulations in September 2025), employees age 50 or older who earned more than $150,000 in FICA wages from their current employer in the prior year must make all catch-up contributions as Roth (after-tax).

This is not optional. Pre-tax catch-up contributions are simply unavailable for high earners above the threshold. The $150,000 threshold is indexed for inflation going forward.

The planning implication cuts both ways. For a high earner who expects to be in a lower bracket in retirement, losing the pre-tax deduction on catch-up contributions is a genuine cost — the tax is paid now rather than deferred. For a high earner who expects taxes to rise, or who is in a bracket where more Roth accumulation is advantageous, the mandate may actually align with what they would have chosen anyway.

The 529-to-Roth IRA Rollover

SECURE 2.0 created an entirely new category of Roth IRA contribution: tax-free and penalty-free rollovers from 529 education accounts into the beneficiary's Roth IRA. This provision became available January 1, 2024.

The concept solves a real problem: many families overfund 529 accounts — either because the child received scholarships, chose a less expensive school, or did not go to college. Previously, unused 529 funds could only be used for education, transferred to another family member's education account, or withdrawn with income tax and a 10% penalty on earnings. Now there is a third option: roll them into the beneficiary's Roth IRA and let them grow tax-free for retirement.

Seven rules govern this provision. All must be satisfied:

1. 15-year minimum: The 529 account must have been open for at least 15 years before any rollover is permitted.
2. 5-year contribution lookback: Contributions made in the last 5 years (and earnings on those contributions) are ineligible. Only the older balance qualifies.
3. Annual limit: Each year's rollover is capped by the Roth IRA contribution limit — $7,500 in 2026 ($8,600 at age 50+). Any direct Roth IRA contributions made that year reduce the available rollover amount dollar-for-dollar.
4. Lifetime cap: $35,000 total per beneficiary, across their lifetime — not indexed for inflation.
5. Beneficiary's Roth only: The rollover must go to the Roth IRA owned by the 529's named beneficiary. The account owner cannot roll into their own Roth.
6. No income limit: Roth IRA income phase-out limits do not apply to 529 rollover contributions — a high earner who normally cannot contribute to a Roth IRA can receive these funds regardless of income.
7. Direct transfer required: The rollover must be a direct trustee-to-trustee transfer — you cannot take a distribution and redeposit it.

The practical implication: a $35,000 Roth IRA funded at 22 with a 40-year investment horizon could grow to over $380,000 tax-free at a 6% return. The benefit is most powerful when the rollover begins early.

Other Notable Provisions

Reduced missed-RMD penalty (effective 2023): The excise tax for failing to take a required minimum distribution fell from 50% to 25% of the shortfall. If corrected within the 2-year correction window, the penalty drops further to 10%. Still substantial, but no longer confiscatory.

Automatic enrollment in new plans (effective 2025): New 401(k) and 403(b) plans established after December 29, 2022 must automatically enroll eligible employees at a 3% starting contribution rate, auto-escalating 1% per year to at least 10% (maximum 15%). Employees can opt out. Existing plans are grandfathered.

Expanded penalty-free early withdrawal exceptions (effective 2024): New exceptions to the 10% early withdrawal penalty for terminal illness, domestic abuse (up to $10,000), qualified disaster distributions ($22,000), and a once-per-year emergency personal expense withdrawal of up to $1,000.

QLAC premium limit doubled (effective 2023): The maximum amount that can be used from an IRA to purchase a Qualified Longevity Annuity Contract increased from $130,000 to $200,000. The former 25%-of-IRA cap was also eliminated.

Long-term part-time worker eligibility (effective 2025): Part-time employees working 500+ hours for 2 consecutive years (down from 3) must be offered 401(k) participation.

Surviving spouse RMD election (effective 2024): A surviving spouse who inherits an IRA may elect to be treated as the deceased spouse for RMD purposes — allowing them to use the deceased's later RMD start date. Significant simplification for spousal IRA inheritance planning.

Employer Roth matching (effective 2023, optional): Employers may now offer matching contributions directly to Roth accounts at the employee's election — the first time employer contributions could be directed to after-tax accounts.

What to Do With This Information

SECURE 2.0's provisions have different urgency depending on your situation. A practical priority order:

1. Verify your RMD start age based on birth year — if you're born 1951–1959, your age is 73; if 1960+, it's 75 (starting 2033). Update your withdrawal plan accordingly.
2. Check if you qualify for the super catch-up — if you're turning 60, 61, 62, or 63 in 2026, you can contribute $34,750 to your 401(k). This window does not return.
3. Evaluate the Roth catch-up mandate — if your income exceeds $150,000, your employer's plan must offer Roth catch-up by 2027. Determine whether pre-planning your Roth balance now makes sense.
4. Assess 529-to-Roth eligibility — if you hold a 529 account that is 15+ years old with a balance that may go unused, the rollover pathway is available. Check the 5-year lookback on recent contributions.
5. If you have a Roth 401(k) — confirm with your plan administrator that RMDs have been eliminated for your account effective 2024 and update any distributions that may still be scheduled.

Important Notes

• SECURE 2.0 provisions have staggered effective dates — not all changes applied in 2023. The year each provision took effect is listed throughout this article and in the infographics.
• The Roth catch-up mandate (Section 603) was delayed twice by IRS notice before final regulations were issued in September 2025. It now applies to plan years beginning after December 31, 2026.
• The $35,000 529-to-Roth lifetime limit is not indexed for inflation as of current law — it will erode in real terms over time.
• State tax treatment of 529-to-Roth rollovers varies. Some states that offer deductions for 529 contributions may recapture those deductions on rollover distributions. Verify your state's treatment before executing a rollover.
• This is education, not individualized tax or legal advice. Implementation of SECURE 2.0 provisions involves employer plan decisions, IRS guidance, and individual circumstances — consult a tax adviser or plan administrator before acting.

In ModernRetire

The Retirement Tax Planner under Strategy -> Tax reflects all SECURE 2.0 changes:

1. Enter your birth year — the planner automatically applies the correct RMD starting age (73 or 75) to your IRA balance projections and shows the first RMD year, amount, and tax impact.
2. The catch-up contribution optimizer flags whether you qualify for the super catch-up (ages 60–63) and calculates the difference between standard and super contribution limits for your current year.
3. The 529-to-Roth rollover tool checks whether your 529 meets the 15-year minimum, applies the 5-year lookback to your recent contributions, and projects how many years of rollovers are needed to reach the $35,000 lifetime cap.
4. The Roth conversion planner uses the gap between your retirement date and your RMD start age to identify the highest-value conversion years — the SECURE 2.0 RMD delay expands this window and is reflected in the projection.