09/20/2026
You can spend years building your retirement savings and still feel unsure when someone says, "Just do a backdoor Roth."
The names sound similar. The reason for using each one matters.
A backdoor Roth IRA is commonly used when your income prevents a direct Roth IRA contribution. You contribute to a traditional IRA without taking a deduction, then convert that money to Roth.
Before doing it, check your existing traditional, SEP, and SIMPLE IRA balances. The IRS generally looks across those accounts when calculating the taxable share. Opening a separate IRA does not sidestep that rule.
A mega backdoor Roth is about additional savings capacity through a workplace plan.
Your employer must offer the right features. Simply having a "Roth 401(k)" option is not enough.
Here's an illustrative 2026 example for someone under 50:
$72,000 total plan limit
− $24,500 in regular employee contributions
− $10,000 from the employer
= $37,500 of potential after-tax contribution room
That assumes sufficient compensation and a plan that permits the full amount. Plan limits and nondiscrimination testing can reduce it.
A Roth conversion of existing pretax savings asks a different question: Is paying income tax on this money now a good trade for qualified tax-free withdrawals later?
A lower-income year may create an opportunity. A large conversion can also push more income into higher tax brackets. Converting gradually may fit better than moving everything at once.
These strategies can coexist. You do not necessarily have to pick just one.
Before acting, ask your plan administrator about mega backdoor availability and a tax-planning CPA or CFP® professional about the tax impact. Keep Form 8606 records for nondeductible IRA contributions.
Save this comparison for your next retirement-planning conversation.
P.S. Once a week I email the best money article I read anywhere, with my take on it, plus the week's post worth catching. It's free, and it's on the Ways to Wealth homepage.
The content shared here is for educational and informational purposes only. It is not personalized investment, tax, legal, or financial advice. Consult a licensed professional before making decisions based on your specific situation.
