The Backdoor Roth: What It Is and Who Actually Needs One
Henry Supinski, ChFC® · 4 min read · July 2026
Once your income crosses a certain line, the IRS won't let you contribute to a Roth IRA directly. The backdoor Roth is the legal, well-established workaround, but it has one trap that catches people every year.
Why You'd Want a Roth in the First Place
Money in a Roth IRA grows tax-free and comes out tax-free in retirement, with no required minimum distributions. For someone already earning a high salary, plus RSUs vesting on top of it, a Roth is one of the few accounts that isn't adding to a future tax bill.
How the Backdoor Actually Works
You contribute to a traditional IRA (which has no income limit on contributions, only on deductibility), then convert that balance to a Roth IRA shortly after. Done correctly, with no other pre-tax IRA money in the picture, there's little to no tax owed on the conversion itself.
The Pro-Rata Rule Is Where People Get Burned
If you already hold other pre-tax IRA money (from an old rollover, for example), the IRS treats all your IRA dollars as one pool for conversion purposes. You can't cherry-pick just the new, non-deductible contribution to convert tax-free. This can turn a "tax-free" backdoor Roth into a partially taxable event you didn't expect.
Who This Is Actually For
- High earners above the direct Roth IRA contribution limit who want more tax-free growth.
- People with little or no existing pre-tax IRA balance, where the pro-rata rule isn't a problem.
- Anyone already maxing out a 401(k) and looking for the next place to put savings.