Summary

A nondeductible IRA is a traditional IRA where contributions aren’t tax-deductible, but investment growth is tax-deferred. High earners often use it to access a Roth IRA through a backdoor conversion, gaining tax-free withdrawals in retirement. While contributions don’t reduce taxable income today, this strategy can expand retirement savings options for those who exceed income limits for direct Roth contributions.

💡 What is a nondeductible IRA?

A nondeductible IRA is a traditional individual retirement account that doesn’t provide an upfront tax deduction for contributions. You fund it with after-tax dollars, but the investments grow tax-deferred until you withdraw them in retirement. At that time, you pay taxes only on the investment gains, not on the amount you contributed. This is because you didn’t take a tax deduction when contributing, so the IRS won’t tax that principal again later.

Takeaways:

• Contributions to a nondeductible IRA aren’t tax-deductible.
• Investment growth is tax-deferred until withdrawn.
• Withdrawals of contributions are tax-free, but gains are taxed.

Key Terms

• Nondeductible IRA: A traditional IRA funded with after-tax dollars where contributions aren’t tax-deductible.
• Tax-deferred: Investment earnings aren’t taxed until withdrawal.
• Contribution: Money you add to your IRA account each year.

🚀 Why consider a nondeductible IRA?

If your income is too high to deduct traditional IRA contributions or contribute directly to a Roth IRA, a nondeductible IRA can still let you put money aside for retirement with tax advantages. For 2025, single filers covered by a workplace retirement plan can’t deduct traditional IRA contributions if they earn $89,000 or more. For joint filers, that limit is $146,000. If you don’t have a retirement plan but your spouse does, deductions phase out at $246,000. Despite this, you can still contribute nondeductible funds to a traditional IRA, gaining tax-deferred growth on investments while using your workplace plan for other retirement savings goals.

Takeaways:

• High earners often exceed the income limits for deductible IRA contributions.
• Nondeductible IRAs provide tax-deferred growth even if contributions aren’t deductible.
• You can still contribute to a workplace retirement plan alongside a nondeductible IRA.

Key Terms

• Income Limits: The IRS maximum income allowed to qualify for tax deductions or Roth contributions.
• Workplace Retirement Plan: Employer-sponsored plans like a 401(k).

🔄 The real benefit: Backdoor Roth IRA conversions

The biggest advantage of a nondeductible IRA is using it to execute a backdoor Roth IRA conversion. This IRS-approved strategy lets high-income earners convert nondeductible IRA contributions into a Roth IRA, making future investment growth tax-free. Since both Roth contributions and nondeductible IRA contributions are made with after-tax dollars, converting doesn’t generate an additional tax liability on principal. However, you will owe taxes on any investment gains at the time of conversion. Financial advisors often recommend contributing to a nondeductible IRA and quickly converting to a Roth to minimize taxable growth before conversion.

Takeaways:

• Backdoor Roth IRA conversions help high earners access Roth accounts.
• Taxes may be due on investment gains at the time of conversion.
• Roth IRAs offer tax-free withdrawals in retirement after conversion.

Key Terms

• Backdoor Roth IRA: A method to fund a Roth IRA by converting nondeductible IRA contributions.
• Roth IRA: A retirement account funded with after-tax dollars with tax-free qualified withdrawals.

🔁 Converting a nondeductible IRA into a Roth IRA

When converting a nondeductible IRA to a Roth IRA, you must pay taxes on any untaxed money, such as investment growth, before it lands in the Roth account. While this isn’t usually a large tax burden, making your entire year’s contribution at once and converting soon after simplifies reporting. For 2025, the IRA contribution limit is $7,000, or $8,000 if you’re 50 or older. Most brokerages guide you through the conversion process and help calculate owed taxes, but it’s wise to track all contributions and consult a tax advisor. Remember, conversions can’t be reversed due to current tax laws, so plan carefully.

Takeaways:

• Taxes are due on untaxed growth at conversion.
• Converting soon after contributing simplifies tax reporting.
• IRA contribution limits for 2025 are $7,000 ($8,000 if 50+).

Key Terms

• Conversion: Moving money from a traditional IRA to a Roth IRA.
• Contribution Limit: The maximum amount you can add to your IRA annually.

Conclusion

A nondeductible IRA can be a powerful tool for high-income earners to grow retirement savings tax-deferred and potentially tax-free through backdoor Roth conversions. While contributions aren’t deductible, strategic use of this account helps maximize retirement savings options, ensuring a more financially secure future.