What is a Backdoor Roth IRA? Income Limits, Taxes, and Rules
Key takeaways
- A backdoor Roth IRA is a strategy that may allow high-income investors to access a Roth IRA despite income limits on direct contributions.
- The backdoor Roth IRA strategy typically involves contributing after-tax money to a traditional IRA and then converting those assets to a Roth IRA.
- Backdoor Roth IRA conversions offer three main tax advantages, including income tax free growth, income tax free withdrawals in retirement, and no required minimum distributions (RMDs).
- Roth conversions may trigger taxes, especially if you hold pre-tax IRA assets subject to the pro rata rule.
- IRS reporting requirements apply, including filing Form 8606 for nondeductible IRA contributions.
If your income is too high to contribute directly to a Roth IRA, a backdoor Roth IRA may offer another way to access the potential tax benefits of a Roth account. Learn how the backdoor Roth IRA works, how it can potentially impact taxes, and who should consider it.
What is a backdoor Roth IRA?
A backdoor Roth IRA is a strategy that allows high-income investors to access the benefits of a Roth IRA even if their income exceeds the limits for direct Roth contributions. The strategy involves contributing after-tax money to a traditional IRA and then converting those funds to a Roth IRA. Roth conversions aren't subject to the same limits as direct Roth IRA contributions, which provides a workaround to move money into a Roth account.
If you're wondering how a backdoor Roth IRA compares with a traditional IRA or Roth IRA, here's a look at some of the key differences between these retirement accounts.
Backdoor Roth vs. Roth IRA vs. traditional IRA
2025-2026 backdoor Roth IRA income limits
While Roth IRAs have tax advantages, they're only available to investors whose modified adjusted gross income (MAGI) is below certain limits.
How to do a backdoor Roth IRA
- Open a traditional IRA and make after-tax contributions to it. For 2025, you're allowed to contribute up to $7,000 (plus a $1,000 catch-up contribution, if you're 50 or older) per year. For 2026, the contribution limit is $7,500 (plus an $1,100 catch-up contribution, if you're 50 or older) per year.
- Convert the assets from the traditional IRA to a Roth IRA. You can make this transfer (known as a Roth conversion) at any point after contributing to your traditional IRA.
- Report the conversion on your tax return. Make sure you file IRS Form 8606 every year you do this.
Benefits of a backdoor Roth IRA
A backdoor Roth IRA may offer several potential benefits:
- Tax-free growth potential: Contributions are made with after‑tax dollars, but any potential earnings can grow tax‑free over time.
- Tax-free qualified withdrawals: Distributions in retirement are generally federal income tax‑free if you're age 59½ or older and the account has been open for at least five tax years.
- No required minimum distributions (RMDs): Roth IRAs aren't subject to RMDs, which may be appealing if you want to leave the money to heirs.
Backdoor Roth IRA tax consequences
While the backdoor Roth IRA can offer tax advantages, the conversion process may also create tax consequences depending on your financial situation.
- Taxes on investment growth: If the assets in your traditional IRA grow between the date you fund the account and the date you convert them to a Roth, you may owe taxes on the growth and earnings. If this is your first and only IRA account and the contribution was made with after-tax dollars, generally only the growth and earnings will be taxable.
- State tax treatment: Depending on your financial situation and existing IRA balances, taxes may apply at the time of the conversion process. State tax treatment of Roth conversions may also vary, so it's important to work with a tax advisor or wealth manager to consider your specific circumstances.
- The pro rata rule: If you have any IRA accounts with pre-tax contributions within them, the IRS pro rata rule can affect the taxable portion of a Roth conversion. Under this rule, the IRS generally considers all of your traditional IRA balances together when determining how much of the conversion is taxable.
How the "pro rata rule" works for Roth conversions
Say you make a $7,000 after-tax contribution to a traditional IRA,1 and you want to convert that $7,000 to a Roth account. But you also have another traditional IRA holding $93,000 in pre-tax contributions, which means the pro rata rule kicks in and a portion of the conversion will be taxable.
Here's how the IRS generally calculates the taxable portion of the conversion:
- After-tax contribution = $7,000
- Pre-tax contributions = $93,000
- Total IRA assets = $100,000
Calculation of the taxable portion of the Roth conversion:
- $93,000 of pre-tax contributions is divided by $100,000 of total IRA assets = 0.93 (this is the portion of your conversion subject to tax)
- $7,000 conversion amount is multiplied by 0.93 = $6,510 (this is the amount of your conversion that will be taxed as ordinary income)
Because of the pro rata rule, the IRS sees the Roth conversion as a mix of pre- and after-tax dollars. In this example, the pro rata rule results in $6,510 of additional taxable income leaving only $490 of the conversion as non-taxable.
Roth conversion early withdrawal rules
If you withdraw money converted to a Roth before age 59½ and before the account is at least five years old, you may owe a 10% penalty on the entire distribution, plus income tax on any earnings. The IRS allows some exceptions to early withdrawal penalties and taxes on distributed earnings, but they are narrow and limited.
After age 59½, you can withdraw converted funds without a 10% penalty. But you must have held assets within a Roth IRA for at least five years to avoid taxes on the earnings portion of your withdrawal.
A separate 5-year rule applies to each Roth conversion you do.
Who should consider a backdoor Roth IRA?
Backdoor Roth IRAs may make the most sense for high-income earners who exceed IRS income limits for Roth IRA contributions, especially those who expect their income to stay high or rise over time.
Backdoor Roth FAQ
Can backdoor Roth IRA rules change?
While the backdoor Roth IRA strategy has existed for many years, the IRS hasn't provided formal guidance on whether it violates the "step-transaction rule," which can treat multiple steps as a single transaction for tax purposes. The lack of a definitive ruling means there is some risk involved. If you use this strategy solely to sidestep the earnings limits on Roth IRA contributions, you should be aware of the risks and get support from a tax professional.
" id="body_disclosure--media_disclosure--260781" >While the backdoor Roth IRA strategy has existed for many years, the IRS hasn't provided formal guidance on whether it violates the "step-transaction rule," which can treat multiple steps as a single transaction for tax purposes. The lack of a definitive ruling means there is some risk involved. If you use this strategy solely to sidestep the earnings limits on Roth IRA contributions, you should be aware of the risks and get support from a tax professional.
What factors affect eligibility for a backdoor Roth IRA?
Most investors who are eligible to make after-tax contributions to a traditional IRA can also do a backdoor Roth. But if your income falls within the Roth IRA income limits, making direct Roth contributions may make more sense than doing a backdoor Roth.
In addition, you can only contribute up to a certain amount across all of your IRAs, including a catch-up contribution if you're 50 or older. Other IRS rules for IRAs may apply.
" id="body_disclosure--media_disclosure--260796" >Most investors who are eligible to make after-tax contributions to a traditional IRA can also do a backdoor Roth. But if your income falls within the Roth IRA income limits, making direct Roth contributions may make more sense than doing a backdoor Roth.
In addition, you can only contribute up to a certain amount across all of your IRAs, including a catch-up contribution if you're 50 or older. Other IRS rules for IRAs may apply.
How is a backdoor Roth IRA reported on my tax return?
The distribution from your traditional IRA will be reported on IRS Form 1099-R by the financial institution, and you should receive a copy of it before the tax filing deadline. You'll also need to report the conversion on Form 8606, to track your nondeductible contribution and calculate how much of the conversion is taxable under the pro rata rule. Form 8606 is required even if the conversion isn't taxable, to let the IRS know your contribution was after-tax.
" id="body_disclosure--media_disclosure--260846" >The distribution from your traditional IRA will be reported on IRS Form 1099-R by the financial institution, and you should receive a copy of it before the tax filing deadline. You'll also need to report the conversion on Form 8606, to track your nondeductible contribution and calculate how much of the conversion is taxable under the pro rata rule. Form 8606 is required even if the conversion isn't taxable, to let the IRS know your contribution was after-tax.
When are backdoor Roth IRA taxes due?
Backdoor Roth taxes are usually due when you file your tax return for the year of the conversion. The tax deadline is typically April 15, unless you get an extension.
Does the pro rata rule apply to pre-tax assets in a rollover IRA, SEP IRA, or SIMPLE IRA?
Yes, the pro rata rule applies to all of your pre-tax IRA assets, including any assets in a traditional, rollover, SEP, or SIMPLE IRA. The IRS looks at the total pre-tax IRA balance across all of your IRA accounts to figure out how much of your backdoor Roth conversion is taxable.
What is a mega backdoor Roth IRA?
A mega backdoor Roth is a strategy that lets some investors put more money into a Roth account than the normal annual limits allow. It is done by making after-tax contributions to a 401(k)—not to an IRA—above the regular employee limit. Then, the money is moved into a Roth IRA or a Roth 401(k). To learn more, work with a tax advisor or wealth manager.
" id="body_disclosure--media_disclosure--260786" >A mega backdoor Roth is a strategy that lets some investors put more money into a Roth account than the normal annual limits allow. It is done by making after-tax contributions to a 401(k)—not to an IRA—above the regular employee limit. Then, the money is moved into a Roth IRA or a Roth 401(k). To learn more, work with a tax advisor or wealth manager.
1 In this example, we assume the investor's income is too high to deduct IRA contributions on their federal tax return because they participate in a retirement savings plan at work, which makes them subject to IRA income limit rules.