It's common to see blogs and articles touting the wonders of Roth IRAs. When you understand the tax characteristics of this particular type of account, it’s easy to see why.
Once the money is deposited into a Roth IRA, it is never again subject to taxes. That means all of the growth on your Roth IRA is tax-free.
The problem many doctors and high-income earners face when it comes to Roth IRAs is that once you begin earning over the IRS’s stated income limit (around $150k single and $240k married filing jointly), you are no longer permitted to make direct Roth IRA contributions.
This is where the “backdoor” Roth IRA comes in.
The backdoor Roth IRA is not a different type of Roth IRA account. Rather, it informally refers to the method by which high-income earners can fund a Roth IRA in an IRS-sanctioned way.
Instead of contributing to a Roth IRA, you convert funds from a Traditional IRA to your Roth IRA.
In this article, you will find helpful tips for reporting your backdoor Roth IRA conversions on your tax return.
This summary complements the detailed explanation below:
Backdoor Roth IRAs can be funded for the prior year through the tax filing deadline (excluding extensions). For example:
Contributions and conversions are often reported in different tax years, which can cause confusion.
Three tax documents are typically generated:
Note: Some Form 5498s are issued after the April filing deadline and are not required to be filed correctly. What matters most is knowing your contribution and conversion amounts.
Reports the amount contributed to the Traditional IRA.
High-income earners who use a Traditional IRA solely for backdoor Roth conversions often maintain a $0 balance outside the transaction window.
Note: The IRA contribution limit for 2024 and 2025 is $7,000.
The 1099-R for the Traditional IRA reports the amount that was “distributed” from the Traditional IRA account. In this case, the funds were distributed or converted to a Roth IRA.
Usually, the 1099-R shows that the amount distributed is approximately equal to the amount contributed to the Traditional IRA (give or take some interest earnings).
So, for instance, the 1099-R form will look something like this:
The custodian or financial institution has no way of knowing what type of transaction you are completing. They are simply reporting the deposits and withdrawals from the account.
This does not mean the conversion is fully taxable — it means the custodian does not know your after-tax basis.
More on what the taxable amount should be when discussing IRS Form 8606 below.
The final tax document you should receive is another Form 5498, reporting the amount converted into the Roth IRA.
The conversion amount should generally match the distribution reported on Form 1099-R (excluding minor interest earnings).
Form 8606 is the key to reporting backdoor Roth IRAs successfully.
This form, which is filed as part of your overall return, establishes your after-tax basis in the Traditional IRA and prevents the IRS from taxing the same dollars twice.
For example, Form 8606 may look something like this:
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If you fail to file Form 8606 and report the Traditional IRA as nondeductible:
After filing, confirm proper reporting on Form 1040, typically:
Yes. The IRS permits nondeductible Traditional IRA contributions followed by Roth conversions. "Backdoor Roth" is an informal term for this process, not a separate account type or special IRS program.
Custodians report the full amount because they don't track your cost basis. Form 1099-R is issued without knowing whether your Traditional IRA contributions were deductible. Form 8606 reports your after-tax contributions and determines the correct taxable portion.
You may pay unnecessary taxes and face IRS penalties. The form reports after-tax amounts that should be non-taxable. It can generally be filed retroactively to correct the reporting and establish your basis. The IRS allows late filing of Form 8606 to correct errors.
No. Form 5498 is informational and is not required to complete your return. The key documents are Form 1099-R and Form 8606.
If you hold other pre-tax IRA balances, part of your conversion may be taxable. This includes SIMPLE IRAs, SEP IRAs, and 401(k) funds rolled into an IRA. The IRS treats all these accounts as one when calculating taxes on a conversion, so the pro-rata rule applies to your total pre-tax IRA balance.
Backdoor Roth IRAs remain a common retirement planning tool for high-income earners, including physicians, dentists, executives, and business owners. They offer:
However, the benefits depend on proper execution and reporting.
Be sure to consult your CPA if you have specific tax-reporting questions regarding your situation.
The 2024 tax forms used in the blog will be updated once 2025 tax documents are fully issued.
Any discussion of taxes is for general information purposes only, does not purport to be complete or cover every situation, and should not be construed as legal, tax, or accounting advice. Clients should confer with their qualified legal, tax, and accounting advisors as appropriate.
Word of caution: People run into unintended backdoor Roth IRA tax consequences when they have existing traditional IRA funds, including SIMPLE IRAs, SEP IRAs, and 401(k) funds that were rolled over into an IRA. That’s because of the backdoor Roth IRA pro-rata rule, which treats all your non-Roth IRAs as one. If you have a pre-tax IRA, attempting back door Roth conversions can add significant, undesirable complexity to your future tax situation. Make sure to consult with your tax professional and financial planner before doing a backdoor Roth conversion to avoid any unpleasant surprises.
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Will Koster, CFP®, is a financial advisor at Spaugh Dameron Tenny, where he helps high-net-worth professionals develop personalized, long-term financial strategies. Motivated by personal experience and a passion for meaningful planning, Will specializes in providing comprehensive financial guidance. He holds the CERTIFIED FINANCIAL PLANNER® and Certified Student Loan Professional® designations, along with Series 7 and 66 licenses. Committed to building lasting relationships, Will works closely with clients to align their finances with their values, enabling them to focus on what truly matters.
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