If you’re a CRNA or nurse practitioner earning over $168,000 as a single filer or $252,000 as a married couple in 2026, you cannot contribute directly to a Roth IRA. Those income limits kick you out.
But there are legal, IRS-approved ways around those limits. Today, we’re covering two tax strategies that can save high-earning nurses hundreds of thousands of dollars over their careers: the backdoor Roth IRA and the mega backdoor Roth.
Why Should Nurses Consider Roth Accounts?
Roth accounts give you tax-free growth, tax-free withdrawals in retirement, and no required minimum distributions when you turn 73 or 75. Your money grows, and you never pay taxes on it again. For a CRNA who might have 30 or 40 years until retirement, that tax-free growth is massive.
What Is a Backdoor Roth IRA?
A backdoor Roth IRA is a two-step process. First, you contribute to a traditional IRA using after-tax dollars without taking a deduction. Second, you immediately convert that traditional IRA to a Roth IRA. Money goes in the front door of a traditional IRA and exits through the back door into a Roth IRA.
The IRS has no problem with this. It’s been legal since 2010, and high-earning nurses use this strategy every year.
For 2026, the contribution limit is $7,500 if you’re under age 50, or $8,600 if you’re 50 or older. It’s not a huge amount, but it adds up. If a 35-year-old CRNA does a backdoor Roth every year for 30 years, contributing $7,500 annually with 7% growth, she’ll have about $709,000 in her Roth IRA at age 65. All of it is tax-free.
Compare that to putting the same money into a taxable brokerage account. After taxes, she’d have about $539,000. That’s $170,000 less.
The Pro-Rata Rule: The Biggest Mistake
The pro-rata rule is the biggest mistake people make. If you have any pre-tax money already sitting in a traditional IRA, SEP IRA, or SIMPLE IRA, the IRS treats all of your IRAs as one combined account. When you do a backdoor Roth conversion, you’re taxed proportionately.
Example: You have an old rollover IRA from a previous job with $93,000 in it, all pre-tax. Then, you open a new traditional IRA and contribute $7,500 of after-tax money because you plan to convert it to a Roth. Your total IRA balance is now $100,500, and only 7.5% of that total is tax-free. When you convert that $7,500 to the Roth, the IRS says 92.5% of it is actually taxable. You owe taxes on $6,937, and that defeats the whole purpose.
How do you avoid this? Roll over your pre-tax IRAs into your 401(k) or 403(b) before you do the backdoor Roth. Most 401(k) or 403(b) plans accept rollovers. Once your IRA balances are zero at the end of the year, you can do a clean backdoor Roth conversion.
How to Execute a Backdoor Roth IRA
Here’s the exact process. First, make sure you have no pre-tax IRA balances. Roll them over to your 401(k) or 403(b) if needed. Second, open a traditional IRA and a Roth IRA at companies like Vanguard, Fidelity, or Charles Schwab.
Third, contribute to your traditional IRA ($7,500 for 2026, or $8,600 if you’re 50 or older). Fourth, leave the money in cash. Don’t invest it yet. Fifth, convert the traditional IRA to your Roth IRA, ideally within a few days. Sixth, now invest the money inside your Roth IRA. Finally, file IRS Form 8606 with your tax return. This form tracks your non-deductible contribution.
The entire process takes about an hour the first time, but after that you can repeat it relatively easily each year.
What Is a Mega Backdoor Roth?
The backdoor Roth IRA only lets you contribute $7,500 per year. What if you want to put more money into a Roth? That’s where the mega backdoor Roth comes in.
The mega backdoor Roth uses your 401(k) or 403(b) plan instead of an IRA, and it’s called mega because the contribution limits are much higher. For 2026, the 401(k) contribution limit is $72,000. If you’re 50 or older, it’s $80,000. And if you’re between 60 and 63, it’s $83,250.
Most nurses think the 401(k) or 403(b) limit is $24,500, but that’s just the employee deferral limit. The $72,000 limit includes everything: your contributions, your employer match, and something called after-tax contributions. After-tax contributions are the key to the mega backdoor Roth.
Imagine a CRNA making $200,000 per year. She contributes $24,500 to her 403(b). Her employer matches 6%, so that’s $12,000. So far, she’s at $36,500 total. But the limit is $72,000, so she has $35,500 of unused space. If her 401(k) or 403(b) plan allows for after-tax contributions, she can contribute that $35,500 difference. Then she converts those after-tax dollars to either a Roth 401(k) within the same plan or rolls them to a Roth IRA outside the plan.
Suddenly, she’s putting $35,500 into a Roth account every year, in addition to the $7,500 backdoor Roth IRA she can still do. That’s a total of $43,000 in annual Roth contributions. Over 30 years at 7% growth, that’s $3.2 million tax-free.
Not Everyone Can Do This
Unfortunately, the mega backdoor Roth is not available to everyone. Only about 40% to 50% of 401(k) or 403(b) plans in the United States allow for after-tax contributions.
Your retirement plan has to have two features. First, it has to allow after-tax contributions (these are different from Roth 401(k) contributions). Second, it has to allow for either in-plan Roth conversions or in-service distributions.
An in-plan conversion means you can move the after-tax money to a Roth 401(k) in the same plan while you’re still working. An in-service distribution means you can roll the money to a Roth IRA outside of the plan while you’re still employed.
If your plan doesn’t allow both of these things, you cannot do a mega backdoor Roth. Large hospital systems are more likely to offer this, but smaller practices usually do not.
To find out if your plan allows it, email your HR department and ask two questions: Does our 401(k) or 403(b) plan allow for after-tax contributions? Does our plan allow for in-plan Roth conversions or in-service distributions? If they say yes to both, you’re in business. If they say no, you can’t use the strategy at your current employer, but you can still do the regular backdoor Roth IRA.
How to Execute a Mega Backdoor Roth
Here’s what you do. First, max out your regular 401(k) contributions ($24,500 for 2026, or $32,500 if you’re 50 or older). Second, figure out how much your employer is going to contribute, typically a 3% to 6% match. Third, subtract those two numbers from $72,000. That’s your after-tax contribution space.
Fourth, contribute that amount as after-tax dollars to your 401(k). Fifth, convert those after-tax contributions to a Roth 401(k) within the plan or roll them to a Roth IRA outside the plan. Do this immediately.
This last step is critical. If you let the after-tax contributions sit and grow, the earnings are taxable when you convert. The goal is to convert so quickly that there are zero dollars in earnings. Some plans have automatic conversion, meaning every time you make an after-tax contribution, it automatically converts to Roth for you. That’s the ideal setup. Other plans may only let you do it quarterly or annually, and that’s fine. Just don’t wait any longer.
Common Mistakes to Avoid
Mistake number one: making after-tax contributions but never converting them. This happens more than you’d think. A nurse sets up the after-tax contributions but never completes the conversion step. Those after-tax dollars grow over time, but the growth is taxed at ordinary income rates when withdrawn in retirement. You lose the whole benefit.
Mistake number two: confusing after-tax contributions with Roth 401(k) contributions. A Roth 401(k) contribution is limited to $24,500 and is part of your employee deferral. After-tax contributions are separate and use up that extra space in the $72,000 limit.
Mistake number three: not checking if your plan actually allows this. Some nurses assume their plan allows for after-tax contributions and try to set it up, but it’s not there. Ask HR first.
Mistake number four: exceeding the $72,000 limit. Remember that the limit includes everything: your contributions, your employer match, and your after-tax contributions. If you go over, you’ll have to correct it, which creates messy paperwork and potential penalties. Track your total contributions throughout the year.
Can You Do Both Strategies?
Yes. The backdoor Roth IRA and the mega backdoor Roth are completely independent of one another. You can do both in the same year if you have the cash flow.
For a CRNA making $250,000 a year with a retirement plan that allows after-tax contributions, here’s what that looks like: regular 401(k) contribution of $24,500, employer match of $12,000, mega backdoor after-tax contributions of $35,500, and backdoor Roth IRA contribution of $7,500. Total Roth contributions for the year: $43,000. That’s life-changing over a 30-year career.
A Real-World Example
Consider a CRNA couple, both 42 years old, with a combined income of $380,000. They work at a large hospital system that allows for after-tax contributions. Here’s what they could do every year.
Each spouse contributes $24,500 to their 403(b). That’s $49,000. Each gets a 5% employer match on that $190,000 salary, which is $9,500 each, or $19,000 combined. Backing into it, each has $38,000 of remaining space for after-tax contributions. That’s $76,000 combined.
They convert those after-tax contributions to Roth 401(k)s immediately. They also each do a backdoor Roth IRA, $7,500 each or $15,000 combined. Total annual Roth contributions: $91,000.
If they do this for the next 23 years until they retire at age 65, assuming 7% growth, they’ll have about $4.5 million in Roth accounts, all tax-free. Compare this to a couple who only maxes out their 403(b)s, and they have everything in pre-tax accounts. At a 24% tax rate in retirement, that’s over a million dollars in taxes. The Roth strategy saves them $1 million or more.
Which Strategy Should You Use?
For most nurses earning over the income limits, start with the backdoor Roth IRA. It’s simpler, available to almost everyone, and repeatable every year. As long as you handle the pro-rata rule correctly, it’s straightforward.
If you’re a high earner with access to a mega backdoor Roth, absolutely use it, but make sure you can afford to save that much. The mega backdoor Roth works best when you’re already maxing out your 401(k), your health savings account, and your backdoor Roth IRA, and you still have cash left over.
If you’re choosing between paying off student loans or doing a mega backdoor Roth, pay off the loans first. If you’re choosing between building an emergency fund or doing a mega backdoor Roth, build the emergency fund first. The mega backdoor Roth is for nurses who are already financially solid and want to maximize tax-free savings.
Self-Employed CRNAs
If you’re a locum tenens CRNA or have 1099 income, you may have more control. You can set up a solo 401(k), and you control the plan features. You can build in after-tax contributions and enable in-plan Roth conversions. This gives you full access to the mega backdoor Roth strategy. For self-employed CRNAs, the solo 401(k) is one of the best tools available.
What If Your Plan Doesn’t Allow Mega Backdoor Roth?
If your 401(k) or 403(b) doesn’t allow for after-tax contributions, you still have options. Ask your HR department if they’d consider adding it, especially if you work at a large hospital. Sometimes employers don’t realize employees want this feature.
Focus on strategies you can control: max out your 401(k) or 403(b) every year, do the backdoor Roth IRA every year, max out your health savings account if you have a high-deductible health plan, save into a taxable brokerage account and use tax-loss harvesting to minimize taxes.
If you have side income, consider setting up a solo 401(k). Even if you only make $20,000 from locum work, you can funnel some of that into a Roth through a mega backdoor strategy.
Tax Reporting
When you do a backdoor Roth IRA, you’ll receive two tax forms. Form 5498 shows your traditional IRA contribution, and Form 1099-R shows your Roth conversion. You have to file IRS Form 8606 with your tax return because this tracks your non-deductible basis.
A lot of CPAs and tax preparers miss this. Make sure yours knows you did a backdoor Roth conversion. If Form 8606 isn’t filed correctly, you could end up paying taxes twice on the same money.
For the mega backdoor Roth, your 401(k) provider will send you a Form 1099-R if you do an in-service rollover to a Roth IRA. If you do an in-plan conversion, it stays within your 401(k) or 403(b), so there’s usually less paperwork. Either way, keep records of what you contributed and when you converted.
Get Help Building Your Tax-free Retirement Savings
Whether you use one strategy or both, you’re building tax-free retirement savings that compound over decades. When you retire, you’ll have accounts you can draw from without worrying about taxes. No required minimum distributions. No IRMAA surcharges on Medicare. Just tax-free money.
Start with the backdoor Roth IRA this year. Then check if your employer allows the mega backdoor. Even if you’re nearing retirement, these strategies still matter. A 55-year-old CRNA doing a backdoor Roth IRA for just 10 years can still accumulate $100,000 or more tax-free. Although you can do this on your own, it can feel overwhelming. Working with a financial advisor can give you confidence and peace of mind.
Ready to see how we can help? Schedule a meeting.
Links Relevant to this Episode
Download Your Free Copy of MoneyRx For CRNAs: Secrets and Strategies to Maximize Wealth and Retirement
Looking for more financial planning tips and resources for CRNAs? Check out the MoneyRx for CRNAs Podcast home page for additional podcast episodes.
Never miss a new episode! Subscribe wherever you listen to podcasts.
