Direct Roth IRA contributions phase out above $146,000 for single filers and $230,000 for married filing jointly in 2024 — above those limits you can't contribute directly. But high earners have two workarounds: the backdoor Roth IRA (contribute to a non-deductible traditional IRA then convert it) and the Mega Backdoor Roth (make after-tax 401(k) contributions and convert them to Roth). The Mega Backdoor Roth is only available through 401(k) plans that allow after-tax contributions and in-service conversions or distributions. Both strategies remain legal under current law, though Congress has periodically proposed eliminating them.