Required withdrawals. The age at which required minimum distributions begin moved from 72 to 73, and rises to 75 for people who attain age 74 after December 31, 2032. Note what that test does and does not say: it keys off the year you turn 74, not the year you turn 73 or 75, so the first people with an applicable age of 75 are those born in 1960, whose first required distribution year is 2035 — not 2033, as the "rises to 75 in 2033" shorthand implies. The statute contains a drafting quirk affecting people born in 1959, whose applicable age the text can be read as either 73 or 75; Treasury's proposed regulations would treat them as having an applicable age of 73, and a technical correction has been expected rather than enacted, so that specific case is not finally settled. Separately, the Act eliminated lifetime RMDs from designated Roth accounts inside a 401(k) or 403(b) beginning with the 2024 tax year, aligning them with Roth IRAs, and it cut the excise tax for missing an RMD from 50% to 25%, or 10% if the shortfall is corrected within the statutory window.
Catch-up contributions. Savers who reach ages 60, 61, 62 or 63 during the year get a larger "super" catch-up in most workplace plans — $11,250 for 2026 — and it is important to understand that this amount replaces the age-50 catch-up rather than stacking on top of it. The Act also made the IRA catch-up inflation-indexed for the first time ($1,100 for 2026), after decades stuck at a flat $1,000. The change with the widest 2026 impact is the mandatory Roth catch-up: an affected participant's catch-up contributions must be made as Roth (after-tax) contributions. The test is narrower than most summaries suggest — it looks at prior-year FICA wages from the employer sponsoring the plan, above $150,000 for the 2026 determination, not at adjusted gross income or total household compensation. It reaches 401(k), 403(b) and governmental 457(b) plans; it does not reach SEP or SIMPLE plans or IRA catch-ups, and a self-employed person with no FICA wages is not subject to it at all.
Access, matching and other provisions. Unused money in a 529 plan can be rolled into a Roth IRA for the same beneficiary, subject to a $35,000 lifetime cap and a requirement that the account has existed for 15 years. Employers may treat an employee's qualified student loan payments as if they were elective deferrals for purposes of the employer match, so a worker paying down loans instead of contributing no longer forfeits the match. 401(k) and 403(b) plans established after the Act's enactment must automatically enroll eligible employees, a requirement that took effect for plan years beginning in 2025, with exemptions for the smallest and newest employers — plans that already existed are untouched. Plans may offer a limited penalty-free withdrawal for an unforeseeable emergency. And the Saver's Credit is replaced from 2027 by the Saver's Match, a federal contribution paid into a retirement account rather than credited against a tax return.