Retirement Savers Love the Backdoor Roth IRA Strategy. It Might Not Last.

Many Americans are using a previously little-known tax method to boost their savings. Now, the government is trying to stop it.

The tax strategy at issue is the mega-backdoor Roth conversion and it has allowed some Americans to amass sizable balances in tax-free Roth retirement accounts. On Sept. 15, the House Ways and Means Committee approved legislation from House Democrats that would prohibit use of the mega-backdoor Roth conversion starting Jan. 1, 2022.