We know nobody can forecast the stock market’s direction and yet we all have an opinion—one that inevitably taints our decisions.
Adam M. Grossman is the founder of Mayport, a fixed-fee wealth management firm. Sign up for Adam's Daily Ideas email, follow him on X @AdamMGrossman and check out his earlier articles.I WAS RECENTLY asked about strategies that high earners can use to reduce their tax bill.
Most people know the usual options. They contribute to a 401(k), fund a health savings account or make a Roth IRA contribution through the backdoor method. Business owners may have additional opportunities through retirement plans and business structures.
But there's another strategy worth knowing about: the Mega Backdoor Roth (MBDR).
The MBDR allows some workers to put far more money into Roth accounts than the usual contribution limits permit.
Consider somebody who contributes the maximum $24,500 to a 401(k) in 2026 and receives a $5,000 employer match. If the employer's retirement plan allows after-tax contributions, that worker may be able to contribute an additional $42,500 to the retirement plan.
This is because the total 401(k) contribution limit for 2026 is $72,000. That limit includes employee contributions, employer contributions and after-tax contributions. Subtract the $24,500 employee contribution and the $5,000 employer match, and there's room for another $42,500. Workers age 50 and older might be able to contribute even more ($80,000 total 401(k) limit in 2026) because of catch-up provisions.
For savers who have already exhausted other retirement account options, this can be a powerful way to build additional tax-free savings.
Your employer's retirement plan must permit after-tax contributions.
Many plans don't. According to Fidelity, only about 11% of employer-sponsored 401(k) plans offer MBDR conversions.
If you log into your retirement plan and review your contribution options, you may see a category labeled "after-tax." That's the option you need:

Importantly, don't confuse it with a Roth 401(k). They're similar, but different. Small-business owners with a solo 401(k) may also be able to use this strategy if their plan allows.
The MBDR process generally involves two steps:
Depending on your plan, the money may be rolled into either a Roth IRA or a Roth 401(k).
The rules vary from plan to plan. Check your plan documents or summary plan description before enganging in this strategy.
Suppose you've already maxed out your traditional 401(k) contribution and completed a backdoor Roth IRA contribution. You now have additional money to invest.
One option is a taxable brokerage account. Another is the Mega Backdoor Roth.
The Roth strategy offers several potential advantages:
A taxable brokerage account also has advantages:
That flexibility shouldn't be overlooked. Retirement accounts come with restrictions, and those restrictions may matter depending on your goals.
Importantly, some plans allow you to move after-tax contributions to either Roth IRA or Roth 401(k) accounts. A Roth 401(k) may be simpler because some plans offer automatic conversions. A Roth IRA typically offers a wider range of investment choices. It may also provide greater flexibility when it comes to withdrawals.
I generally prefer the Roth IRA option when it's available. Still, either choice can work well.
After-tax contributions are usually invested while they remain in the 401(k).
If the account earns money before the conversion takes place, those earnings are taxable when moved to the Roth account. For that reason, many investors try to complete the conversion quickly. Some plans even allow automatic conversions.
Suppose you contribute $10,000 to the after-tax portion of your 401(k). Before the conversion occurs, the account earns $100.
You then move the balance to a Roth IRA. The entire $10,100 can be transferred, but the $100 of earnings will generally be taxable if you put it all into Roth IRA. There are plans that allow you to split between Roth and Traditional, which could be helpful.
At year-end, you'll receive Form 1099-R reporting the transaction.
Using the example above, your tax return would show a $10,100 distribution, with $100 generally treated as taxable income.
If you work with a tax professional, make sure they understand exactly what happened. The reporting isn't especially complicated, but it should be handled correctly.
The Mega Backdoor Roth isn't available to everybody. But for those whose retirement plans allow it, the strategy offers a chance to put a substantial amount of additional money into a Roth account and enjoy tax-free growth for years to come.
Have you used this strategy to contribute to your retirement accounts? Let us know in the comments!
Bogdan Sheremeta is a licensed CPA based in Illinois with experience at Deloitte and a Fortune 200 multinational.
NO. 7: THE TWO easiest financial wins are paying off credit card debt and putting enough in our 401(k) to get the full employer match. Failing to do either is the height of financial foolishness.
BUY THE BIG THREE. The market portfolio consists of four major sectors, roughly equal in size: U.S. stocks, U.S. bonds, foreign shares and foreign bonds. Arguably, foreign bonds are optional, offering modest yields but wild currency swings. The other three sectors, however, are crucial to a diversified portfolio. Do you own enough of all three?
NO. 77: TO MINIMIZE taxes, use your taxable account to own stock index funds, municipal bonds and Treasury bonds. Stock index funds in a taxable account will benefit from the low federal tax rate on qualified dividends and long-term capital gains. Meanwhile, the municipal bonds should be tax-free and the Treasurys will avoid taxes at the state level.
SELF-INSURE. If we have a moderate amount of savings, we might choose to scale back our insurance coverage and perhaps drop some policies entirely, and instead self-insure. Let’s say we have enough set aside for retirement. We might cancel our disability insurance, knowing we could cover costs for the rest of our life, even if we never worked again.
NO. 7: THE TWO easiest financial wins are paying off credit card debt and putting enough in our 401(k) to get the full employer match. Failing to do either is the height of financial foolishness.
JUST BEFORE Thanksgiving in 2017, a heartwarming story hit the news. A young woman from Philadelphia named Katelyn McClure had run out of gas on the highway and found herself stranded. By chance, a homeless veteran named Johnny Bobbitt was nearby and, in an act of selflessness, he gave McClure his last $20 to buy gas.
After making it home safely, McClure wanted to express her gratitude, so she set up a GoFundMe page to help Bobbitt get back on his feet.
GIVING GIFTS DELIVERS significant emotional and health benefits, or so says the research. But I find much depends on how the actual giving takes place.
My best giving lesson occurred many years ago. At a rural busstop on the island of Crete, off the coast of Greece, I sat next to an old local woman dressed in ragged clothing and torn shoes. Neither of us spoke the other’s language. She carried with her a small bag of fresh peaches and motioned for me to take one.
WITH DECEMBER FAST approaching, it’s a good time to think about end-of-the-year financial planning. What steps might you take?
A popular strategy is to make charitable gifts, both to support good causes and reap a tax benefit. But before you start writing checks, take a moment to better understand your tax picture. Because of the complexity of tax forms, that’s often easier said than done. Still, you don’t need to decipher every number. Instead,
IF YOU’RE LIKE MANY readers of this site, you’ll reach your 60s and discover one of those nice problems to have—that you’ve over-saved for retirement.
What now? For answers, check out a new book, More Than Enough: A Brief Guide to the Questions That Arise After Realizing You Have More than You Need. Author Mike Piper is the driving force behind both the Oblivious Investor website and the free Open Social Security calculator.
“WHERE’S THE QUALIFIED charitable distribution on Mom’s tax return?” Mom had never before executed a qualified charitable distribution, or QCD. Her tax return was 41 pages, and we weren’t sure where to find it.
There was a long pause. “I forgot your mom had made QCDs as I prepared her return,” allowed her tax preparer. “I’ll need to recalculate her taxes.”
A QCD can be a tax-efficient way to donate money for those who are charitably inclined—but only if it’s correctly documented on your tax return.
AMERICANS ARE a generous people. They gave $471 billion to charity in 2020, according to Giving USA. Of that sum, 69% was contributed by individuals like you and me, as opposed to foundations or corporations, plus another 9% took the form of bequests.
Are you charitably inclined? Donor-advised funds can offer a tax-efficient way to make financial gifts, allowing folks to fund their own giving foundation and then direct money to charities for years to come.
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I WAS RECENTLY asked about strategies that high earners can use to reduce their tax bill.
Most people know the usual options. They contribute to a 401(k), fund a health savings account or make a Roth IRA contribution through the backdoor method. Business owners may have additional opportunities through retirement plans and business structures.
But there's another strategy worth knowing about: the Mega Backdoor Roth (MBDR).
The MBDR allows some workers to put far more money into Roth accounts than the usual contribution limits permit.
Consider somebody who contributes the maximum $24,500 to a 401(k) in 2026 and receives a $5,000 employer match. If the employer's retirement plan allows after-tax contributions, that worker may be able to contribute an additional $42,500 to the retirement plan.
This is because the total 401(k) contribution limit for 2026 is $72,000. That limit includes employee contributions, employer contributions and after-tax contributions. Subtract the $24,500 employee contribution and the $5,000 employer match, and there's room for another $42,500. Workers age 50 and older might be able to contribute even more ($80,000 total 401(k) limit in 2026) because of catch-up provisions.
For savers who have already exhausted other retirement account options, this can be a powerful way to build additional tax-free savings.
The catch
Your employer's retirement plan must permit after-tax contributions.
Many plans don't. According to Fidelity, only about 11% of employer-sponsored 401(k) plans offer MBDR conversions.
If you log into your retirement plan and review your contribution options, you may see a category labeled "after-tax." That's the option you need:
Importantly, don't confuse it with a Roth 401(k). They're similar, but different. Small-business owners with a solo 401(k) may also be able to use this strategy if their plan allows.
The MBDR process generally involves two steps:
Depending on your plan, the money may be rolled into either a Roth IRA or a Roth 401(k).
The rules vary from plan to plan. Check your plan documents or summary plan description before enganging in this strategy.
Why use it?
Suppose you've already maxed out your traditional 401(k) contribution and completed a backdoor Roth IRA contribution. You now have additional money to invest.
One option is a taxable brokerage account. Another is the Mega Backdoor Roth.
The Roth strategy offers several potential advantages:
A taxable brokerage account also has advantages:
That flexibility shouldn't be overlooked. Retirement accounts come with restrictions, and those restrictions may matter depending on your goals.
Importantly, some plans allow you to move after-tax contributions to either Roth IRA or Roth 401(k) accounts. A Roth 401(k) may be simpler because some plans offer automatic conversions. A Roth IRA typically offers a wider range of investment choices. It may also provide greater flexibility when it comes to withdrawals.
I generally prefer the Roth IRA option when it's available. Still, either choice can work well.
Mind the earnings
After-tax contributions are usually invested while they remain in the 401(k).
If the account earns money before the conversion takes place, those earnings are taxable when moved to the Roth account. For that reason, many investors try to complete the conversion quickly. Some plans even allow automatic conversions.
Suppose you contribute $10,000 to the after-tax portion of your 401(k). Before the conversion occurs, the account earns $100.
You then move the balance to a Roth IRA. The entire $10,100 can be transferred, but the $100 of earnings will generally be taxable if you put it all into Roth IRA. There are plans that allow you to split between Roth and Traditional, which could be helpful.
At year-end, you'll receive Form 1099-R reporting the transaction.
Using the example above, your tax return would show a $10,100 distribution, with $100 generally treated as taxable income.
If you work with a tax professional, make sure they understand exactly what happened. The reporting isn't especially complicated, but it should be handled correctly.
The Mega Backdoor Roth isn't available to everybody. But for those whose retirement plans allow it, the strategy offers a chance to put a substantial amount of additional money into a Roth account and enjoy tax-free growth for years to come.
Have you used this strategy to contribute to your retirement accounts? Let us know in the comments!
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