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Backdoor Roth IRA

A backdoor Roth is a legal workaround that lets high earners fund a Roth IRA despite the income limits. You contribute to a non-deductible traditional IRA, then convert it to a Roth — since anyone can convert, the income cap on direct Roth contributions no longer blocks you.

The catch is the 'pro-rata rule': if you hold other pre-tax IRA money, part of the conversion is taxable. Because the mechanics are easy to get wrong, most people do a backdoor Roth with a tax professional's guidance.