The “Backdoor” Roth IRA: A Step-by-Step Guide for High Earners

Todd Rowe is a Principal Wealth Advisor at Compound. He has nearly two decades of experience guiding families through estate planning, wealth planning, and strategies to maximize tax efficiency.

So you were contributing to your Roth IRA, got a raise or a new job, and then found out there’s an income threshold that you’ve now crossed. 

And if your Roth was an important part of your retirement strategy, it can feel like a door closing while you just need to move on.

But with the “backdoor” Roth IRA strategy, you can keep contributing to tax-free funds, regardless of the income limits. If you use the backdoor consistently over 20+ working years, you could see several hundred thousand dollars in additional tax-free retirement savings. In a dual-income household, you could be contributing an additional five figures every year.

It does take a few deliberate steps across different account types, some coordination with your tax preparer, and attention to a couple of important rules. But if you plan well, it can be well worth doing because every year you don’t contribute is a contribution year that you can’t get back. 

But if you start making contributions now, that tax-free growth can still play a significant role in your financial future.

Key Takeaways: 

• High earners aren't locked out of Roth IRA benefits. The backdoor Roth IRA strategy allows you to keep contributing to tax-free funds regardless of income limits.

• Clearing pre-tax IRA balances first is critical. Existing balances trigger the pro-rata rule, which could make your conversion taxable and eliminate the benefit of the strategy.

• Don’t skip the tax reporting step. When you convert to Roth, you receive a 1099-R showing a distribution from your IRA. Tell your tax preparer about the non-deductible IRA contribution, so it’s filed properly.

How The "Backdoor" Roth IRA Strategy Actually Works

Over a decade ago, Congress eliminated income limits on Roth conversions as a way to bring in more tax revenue. In doing so, they inadvertently created an opportunity for high earners to access additional Roth benefits.

They just have to go through the “backdoor.”

A backdoor Roth IRA is a strategy that allows high earners to contribute to a Roth IRA indirectly through a conversion, bypassing the income limits on direct contributions. 

The direct Roth IRA contributions phase out at $153,000 for single filers and $242,000 for married couples filing jointly (as of 2026). If you’re above those income thresholds, the backdoor strategy is how you stay in the game.

The “backdoor” Roth IRA has only been around for about 15 years, so it’s still a relatively new strategy. Even for those trying to do it correctly, they often run into trouble with the mechanics and tax reporting. 

Maybe you’ve changed jobs, rolled over your previous IRA, and never realized it’s now creating a tax problem in the background.

If you have existing pre-tax IRA assets, the tax benefits of the strategy can be negated by the pro-rata rule — meaning the move was for naught. And even when done correctly, the strategy involves specific tax reporting that's frequently mishandled (even sometimes by professional tax preparers).

It’s important to take a number of strategic steps across different account types to get the strategy up and running, and there are problems common to the process that are easy to miss. Without accurately converting (more on that later), you don’t actually benefit at all.

Mega backdoor Roth vs. backdoor Roth

‍Backdoor Roth Strategy: 

• Individual accounts $7,500-$8,600 per person
• Works for any high earner phased out of direct Roth contributions
• Works best with little or no pre-tax IRA assets

Mega Backdoor Roth Strategy:

• Employer plan required
• $30,000-$50,000+ possible
• Only possible if your company offers after-tax 401k contributions

If you have access to a 401k, you can make an IRA contribution, and then immediately convert that contribution to Roth. 

Setting Up Your “Backdoor” Roth IRA

Whether you hit the income limit years ago, or you’re already maxing out your 401k, the “backdoor” approach might allow you to contribute even more.

Step 1: Clear Any Existing Pre-Tax IRA Balances (The Pro-Rata Rule)

If you have existing pre-tax IRA balances, they'll trigger the pro-rata rule — meaning most of your conversion could become taxable. Pre-tax IRAs include Traditional Contributory IRAs, IRA Rollovers, SEP IRAs, or Simple IRAs. 

You need to clear these balances by either rolling them into your current employer's 401k plan or converting them to Roth upfront. While different types of pre-tax IRAs are aggregated for the “pro-rata” rule, that rule doesn’t apply to 401ks, 403bs, or solo 401ks. Simple IRAs have a two-year waiting period before they can be rolled into a 401k. 

A number of people have money sitting in an account that, if moved, can work more toward their benefit. 

For example: Say you have a $20,000 pre-tax IRA rollover from a previous employer. Instead of letting it block the backdoor Roth strategy, you could roll the full balance into your current employer’s 401k plan. Or you could convert the entire $20,000 to Roth that year — paying tax once — which clears the path for future tax-free backdoor Roth conversions. It also lets that $20,000 grow tax-free inside the Roth account. If converted strategically, in a low-income year (or earlier in your career), you may realize permanent tax savings by locking in the currently lower tax rates.  

Step 2: Make the Non-Deductible IRA Contribution

With your existing IRA balances cleared up, the pro-rata rule no longer applies. You can start your backdoor Roth contribution.

You can put up to $7,500 — or $8,600, if you're over 50 — in a traditional IRA account, establishing your “cost basis.” If you're married, both spouses can contribute up to the max in each of their own accounts as. (These numbers are the 2026 contribution limits, and may change.) When you convert the account to Roth afterwards, it's still worth the same amount you contributed: There is no taxable gain upon conversion.

Step 3: Convert to Roth Within Days

It’s typically beneficial for the conversation to happen within a day or two of making the contribution. If you wait too long, any interest on the account could become taxable. That’s not a disaster, but is an avoidable complication 

Your IRA custodian can convert the traditional IRA balance to a Roth IRA: that’s an account-to-account transfer within the same institution. The conversion creates a 1099-R form, but should result in minimal or no taxable income. This is because the account shouldn’t have grown much if the funds were converted shortly after being contributed.

Step 4: Ensure Proper Tax Reporting with Form 8606

This is a critical step, and it’s where backdoor Roths often run into problems. 

When you convert to Roth, if you and your tax preparer don’t file correctly, the tax benefits basically disappear. 

Unfortunately, it’s a fairly common issue. 

You'll receive a 1099-R showing a distribution from your IRA (i.e., the Roth conversion step). To make sure this conversion is reported correctly on Form 8606 with your tax return, your tax preparer should know that you made a non-deductible IRA contribution. 

If you don’t let them know specifically, your tax preparer might report the conversion as fully taxable income instead. 

How the Backdoor Roth IRA Helps

Like any investment that’s working for your portfolio, you should see the value compound over time. 

If you start investing in a backdoor Roth IRA at 40, with 20 working years ahead, and you contribute $7,500 a year per person ($15,000 for the household), that money could grow to a few hundred thousand dollars. Those gains grow tax-free and compound over decades — unlike a taxable account, where you'd pay taxes on dividends, capital gains, and rebalancing along the way. 

Long term, Roth IRAs also have a number of planning benefits. 

There are no required minimum distributions (RMDs) for Roth IRAs, meaning that they can continue to grow tax free until you pass away. And because Roth IRAs don’t have RMDs any distributions are generally tax-free, they can help reduce the income that triggers Medicare surcharges (IRMAA). 

Also, they can play a significant role in estate planning. Generally the assets can grow tax-free for heirs’ benefits for up to 10 years after the original account owner passes away. Lastly, Roth IRAs represent a “tax hedge” against future rate increases, since these assets can grow tax-free indefinitely during your lifetime. 

Before you start, it’s important to know what you're working with. The most common backdoor Roth mistakes often result from an unclear picture of your existing IRA balances across accounts. The Compound dashboard connects all your accounts in one place so you can see exactly where you stand and make informed decisions.

FAQs

What is a backdoor Roth IRA?

A backdoor Roth IRA is a strategy that lets high earners contribute to a Roth IRA indirectly, even after crossing the income threshold for direct contributions. You contribute to a traditional IRA first, then convert that balance to Roth. The income limits that apply to direct Roth contributions don't apply to conversions, which is what makes the strategy work.

What's the difference between a backdoor Roth IRA and the mega backdoor Roth strategies?

The backdoor Roth IRA is done individually, meaning separate from an employer retirement plan, whereas the mega backdoor Roth strategy is done through an employer retirement plan (such as a 401k). The other major difference is that the mega backdoor Roth strategy offers significantly higher contribution limits, but is not available to everyone. 

Why do I need to clear out my existing pre-tax IRA balances before doing a backdoor Roth?

They trigger the “pro-rata” rule, which aggregates your IRA assets together for purposes of calculating the taxability of a Roth conversion and requires that you convert your pre-tax and after-tax dollars proportionately, not selectively. If you have a sizable pre-tax IRA balance, it generally means most of your backdoor Roth conversion will be taxable instead of tax-free, likely reducing the benefit of the strategy.

How quickly should I convert my traditional IRA contribution to Roth?

Most wealth advisors convert within one to two days after making the non-deductible IRA contribution, though some accountants recommend waiting a full year. The key is to convert while the account value still matches your contribution basis, so you minimize any growth between the contribution and conversion steps, since the difference between the account value at conversion and your contribution amount is a taxable gain. 

Is the backdoor Roth IRA legal?

Yes. The strategy has been widely used since 2010, when Congress eliminated income limits on Roth conversions. The IRS is aware of it and has not moved to restrict it. That said, the rules around it — particularly the pro-rata rule and tax reporting requirements — need to be followed precisely for the strategy to work as intended.