Liz Weston

Dear Liz: I never understood Roth IRAs. They don’t offer a tax break for contributions, so they cause you to pay taxes on your money when you’re working and in a higher tax bracket. With a regular IRA, you get a tax break upfront when you’re in the higher tax bracket and then you pay taxes on withdrawals when you’re retired and in a lower tax bracket. What am I missing?

Answer: Not everyone will be in a lower tax bracket in retirement. Some will be in the same bracket or a higher one when it’s time to withdraw the money. People in their 20s, for example, may be in the lowest tax bracket they’ll ever see. People who expect tax rates in general to rise also may wish to hedge their bets by having at least some money in a Roth.

A Roth also can make more sense if you don’t get a tax break for your IRA contributions. That could be the case if you have access to a workplace plan and your income is above certain limits, or if your income is so low that you owe little or no income tax.

Roth IRAs have a few other advantages. Having a pot of tax-free money in retirement can give you some flexibility in managing your tax bill. If a big bill comes up, for example, a withdrawal from your IRA could push you into a higher tax bracket while a withdrawal from your Roth would not.

Roths also don’t require you to take withdrawals in retirement, unlike regular IRAs. You can hang on to the money until you need it, perhaps to pay for late-in-life costs such as long-term care, or you can pass it on to your heirs.

Roths are more flexible in another way: You can always withdraw the amount you contributed to a Roth without tax consequences. Withdrawals from IRAs before retirement typically incur both taxes and penalties.