How the Spending Bill’s New Retirement Rules Will Affect Roth IRAs and 401(k)s

Roth 401(k)s have a different rule: You must take money out on the same schedule as you would with a regular 401(k). With the new bill, however, Roth 401(k)s would have the same rule as Roth I.R.A.s starting in 2024.

Employers can offer matching contributions to Roth 401(k)s the same way they do with regular 401(k)s. Currently, however, that Roth match has to go into a regular 401(k) account, before you pay income taxes on it. The new rule gives employers the option to let employees choose between putting the match in a Roth 401(k) or a regular one. It will take effect as soon as the overall bill is enacted.

Why does this matter? One advantage to Roth accounts is that you can deposit money when your income tax rate is relatively low — say when you’re younger and your income is lower. Then, decades later, when your tax rate would presumably be higher, you can withdraw many years of earnings tax-free.

Current retirement account rules allow people who are 50 or older (at the end of a calendar year) to put money away for retirement that exceeds the normal annual contribution limits. This allows people with money to spare to catch up on savings if they think they have not saved enough.

In workplace retirement accounts like 401(k)s, you can currently put the catch-up money away before you pay income taxes on it, as you would with normal 401(k) contributions. But once the new bill is signed, those who earn more than $145,000 will have to put the catch-up money into a Roth 401(k) starting in 2024, which means they’ll pay income taxes on it before making the deposit.

For decades, some parents have avoided putting money into 529 college savings accounts because of one big concern: the possibility of having to pay taxes and a penalty if they someday no longer needed the funds for higher education expenses and wanted to withdraw the money. The scenario might arise if a child doesn’t go to college, for instance.

The College Savings Plans Network has long advocated a rule that would allow parents to move leftover money into their own retirement accounts or a new one for a child. Adults who had previously chosen to put a child’s college savings ahead of their own retirement savings could get an instant boost. Alternatively, young adult children could get a running start on savings, courtesy of parental largess.

The new bill solves for at least some parental angst. Many families with leftover 529 savings would be able to move it to a Roth I.R.A. starting in 2024. There is a $35,000 lifetime limit on these transfers per account beneficiary, plus a few other restrictions that aim to keep this from being too much of a wealth transfer extravaganza for affluent families.

Tara Siegel Bernard contributed reporting.