If converting from a traditional IRA to a Roth makes sense, do it. If tax rates drop, you can undo the conversion later. Getty Images By Kimberly Lankford, Contributing Editor From Kiplinger's Personal Finance, November 2017 QI’m thinking of converting money from a traditional IRA to a Roth IRA, but I’m hesitant to make the move in case tax reform reduces my tax rate. Should I wait? --S.L., St. LouisSee Also: 10 Things You Must Know About Roth IRAs AEditor's note: Tax legislation in Congress would eliminate the opportunity to reverse a Roth conversion, effective at the end of this year. If you made a Roth conversion earlier this year, watch this issue carefully. If the change becomes law, you would have only until December 31, 2017, to undo a 2017 Roth conversion ... not next October 15 as permitted under current law. If you convert the money this year and your tax situation changes, you’ll have an opportunity for a do-over. You have until October 15, 2018, to undo a conversion you made in 2017, a process called recharacterization. The money returns to the traditional IRA and you get back the taxes you paid on the conversion (or avoid having to pay the tax bill if you undo the conversion before you file your return). If congressional action means you’re in a lower tax bracket next year so the conversion would cost you less, you can reconvert the account in 2018. “If there’s any chance the Roth conversion makes sense, I’d make it now,” says Jeffrey Levine, CEO and director of financial planning for the BluePrint Wealth Alliance in Garden City, N.Y. If it turns out not to be a good move because of a change in the tax law, a market decline or whatever reason, he says, then you can recharacterize. Got a question? Ask Kim at email@example.com.