Edited by 
Edited by 
A backdoor Roth IRA typically offers high-income earners a workaround to contribute directly to a Roth IRA when their earnings are above IRS income limits. This strategy could allow you to take advantage of tax-free growth and withdrawals in retirement. Reporting a backdoor Roth IRA contribution on your taxes is relatively straightforward. But doing it incorrectly could end up costing you money. A financial advisor can help optimize your nest egg to lower your tax liability.
What Is a Backdoor Roth IRA?
For many individuals, the Roth IRA is a desirable choice due to its tax-free growth and withdrawals. However, not everyone can contribute directly to a Roth IRA, as there are income limits that restrict high earners. In 2026, single filers must earn less than $153,000 to contribute to a Roth IRA (married couples filing jointly must earn less than $239,000). Once your income surpasses these thresholds, you’re no longer eligible to contribute directly to a Roth IRA.
This is where the backdoor Roth IRA comes into play. It’s a strategy used by those who earn too much to qualify for direct Roth IRA contributions. The process begins with making a non-deductible contribution to a traditional IRA, which doesn’t have income limits for contributions. Then, you can convert the traditional IRA to a Roth IRA, which is allowed regardless of your income level.
While this strategy can offer you tax-free investment growth and withdrawals in retirement, these benefits are most advantageous based on your current and expected future tax situations. Additionally, Roth IRAs are not subject to required minimum distributions (RMDs) during your lifetime, which may provide you with greater flexibility and potential tax advantages.
How to Report Your Backdoor Roth IRA
Follow these six basic steps to report your backdoor Roth IRA:
- Contribute to a traditional IRA: First, make a non-deductible contribution to your traditional IRA account. Ensure that you have documentation to show that you made after-tax contributions.
- Convert to a Roth IRA: Convert the traditional IRA funds to a Roth IRA, typically by requesting a trustee-to-trustee transfer or by liquidating the traditional IRA and contributing to the Roth IRA within 60 days.
- Report the contribution: When you file your taxes, you’ll need to report the contribution to your traditional IRA by using Form 8606. This will indicate the amount of the nondeductible contribution.
- Report the conversion: You’ll also need to report the conversion from your traditional IRA to the Roth IRA. This is also done on Form 8606.
- Pay taxes (if applicable): If you’ve made any gains on your traditional IRA contributions before converting to a Roth IRA, you’ll owe taxes on those gains. This is because traditional IRA contributions are typically tax-deferred, meaning you haven’t paid taxes on the funds yet. When you convert to a Roth IRA, you’re essentially “unlocking” those funds and moving them to a Roth, which requires you to pay taxes on any pre-tax amounts.
- Keep records: It’s essential to document your contributions and conversions. This includes keeping track of the amounts contributed to your traditional IRA, any gains or losses, and the amounts converted to your Roth IRA.
If you’re unsure about any aspect of reporting your backdoor Roth IRA contribution, or if you have a complex financial situation, you want to consult a tax professional. They can offer you personalized advice based on your specific circumstances and help ensure that you meeting IRS requirements.
Form 8606 and Other Required Documents
The IRS mandates the use of Form 8606 to report nondeductible contributions to traditional IRAs and any subsequent conversions to Roth IRAs. Failure to report these transactions can lead to a 10% tax on underpaid amounts and a $50 penalty for not filing Form 8606. Furthermore, if excess contributions are not reported, individuals may face a 6% tax for each year the excess remains in their account.
Part I in Form 8606 is used to disclose non-deductible contributions made to traditional IRAs, establishing the basis for after-tax assets in the account. Part II accounts for the conversion from a traditional IRA to a Roth IRA, and any taxable events that may arise.
In addition to Form 8606, several other documents are indispensable for reporting a backdoor Roth IRA conversion. Here are six important forms you may need to consider:
- Traditional IRA contribution statements
- 1099-R forms
- Brokerage account statements
- Form 5498
- Prior year tax returns
- Records of recharacterizations
Estimate your tax liability based on your income and filing status using our income tax calculator.
Income Tax Calculator
Calculate your federal, state and local taxes for the 2025 tax year.
Your 2025 Total Income Taxes
Federal Income & FICA Taxes
State Taxes
Local Taxes
About This Calculator
Our income tax calculator calculates your federal, state and local taxes based on several key inputs: your household income, location, filing status and number of personal exemptions.
How Income Taxes Are Calculated
-
First, we calculate your adjusted gross income (AGI) by taking your total household income and reducing it by certain items such as contributions to your 401(k).
-
Next, from AGI we subtract exemptions and deductions (either itemized or standard) to get your taxable income. Exemptions can be claimed for each taxpayer.
-
Based on your filing status, your taxable income is then applied to the tax brackets to calculate your federal income taxes owed for the year.
-
Your location will determine whether you owe local and / or state taxes.
When Do We Update? - We check for any updates to the latest tax rates and regulations annually.
Customer Service - If you would like to leave any feedback, feel free to email info@smartasset.com.
Assumptions
Deductions
- "Other Pre-Tax Deductions" are not used to calculate state taxable income.
Credits
- The only federal credit automatically calculated is the Savers Credit, depending on your eligibility.
- We do not apply any refundable credits, like the Child Tax Credit or Earned Income Tax Credit (EITC).
- We do not apply state credits in our calculations.
Itemized Deductions
- If itemizing at the federal level, you may need to itemize at the state level too. Some states don't allow itemized deductions, which is accounted for in our calculations.
- When calculating the SALT deduction for itemized deductions, we use state and local taxes, and we assume your MAGI.
- We assume that there is no cap to itemized deductions, if a state allows them.
- We do not categorize itemized deductions (such as medical expenses or mortgage interest), which could be subject to specific caps per state.
Local Tax
- Depending on the state, we calculate local taxes at the city level or county level. We do not include local taxes on school districts, metro areas or combine county and city taxes.
- With the exception of NYC, Yonkers, and Portland/Multnomah County, we assume local taxes are a flat tax on either state taxable income or gross income.
Actual results may vary based on individual circumstances and changes in tax laws or IRS regulations. Estimates provided by this calculator do not guarantee income tax amounts or rates. Past performance is not indicative of future results.
SmartAsset.com does not provide legal, tax, accounting or financial advice (except for referring users to third-party advisers registered or chartered as fiduciaries ("Adviser(s)") with a regulatory body in the United States). Articles, opinions and tools are for general informational purposes only and are not intended to provide specific advice or recommendations for any individual. Users should consult their accountant, tax advisor or legal professional to address their particular situation.
Backdoor Roth IRA Pros and Cons
As we mentioned above, for high-income earners who are phased out of making direct Roth IRA contributions, a backdoor Roth IRA offers a legal workaround to still access the powerful benefits of a Roth account.
This strategy allows individuals to make nondeductible contributions to a traditional IRA and then convert those funds to a Roth IRA, regardless of income level. Once inside the Roth account, the funds grow tax-free, and qualified withdrawals in retirement are also tax-free.
However, while the strategy can be advantageous, it does come with some complexities and potential drawbacks. The table below outlines the key pros and cons to consider before implementing a backdoor Roth IRA.
| Pros | Cons |
|---|---|
| Access to Roth for High Earners: Allows Roth contributions despite exceeding income limits. | Complex Tax Reporting: Requires accurate completion of IRS Form 8606 to avoid penalties. |
| Tax-Free Growth and Withdrawals: All qualified Roth IRA withdrawals are tax-free. | Pro-Rata Rule May Apply: Taxes may be due if you have other pre-tax IRA balances. |
| No Required Minimum Distributions (RMDs): Offers greater control over when and how to withdraw funds. | Potential Tax Liability on Gains: Investment gains prior to conversion may be taxable. |
| Estate Planning Benefits: Roth IRAs can be inherited tax-free by beneficiaries. | Not Ideal for Those With Large Pre-Tax IRAs: May result in higher taxes during conversion. |
Bottom Line
The tax requirements for a backdoor Roth IRA involve reporting nondeductible contributions to a traditional IRA and subsequent conversions to a Roth IRA on Form 8606. Failing to do so, could cost you more money in IRS penalties and additional taxes on the converted amount.
Tips for Tax Planning
- A financial advisor with a specialization in tax planning can guide you in lowering your tax liability. Finding a financial advisor doesn’t have to be hard. SmartAset’s free tool matches you with up to three vetted financial advisors who serve your area, and you can have a free introductory call with your advisor matches to decide which one you feel is right for you. If you’re ready to find an advisor who can help you achieve your financial goals get started now.
- If you’re not sure how much you need to save for retirement then you may want to utilize a free retirement calculator.
Photo credit: ©iStock.com/vorDa, ©iStock.com/GeorgeRudy, ©iStock.com/StefaNikolic