There’s an important lesson for investors in Vanguard Group’s recent $106 million settlement with the Securities and Exchange Commission over its target-date funds: Being mindful of your investment account type can save you from a big tax bill in certain cases.

Vanguard, the largest target-date fund manager, agreed to pay the sum for alleged “misleading statements” over the tax consequences of reducing the asset minimum for a low-cost version of its Target Retirement Funds.

Lowering the asset minimum for its lower-cost Institutional share class — to $5 million from $100 million — triggered an exodus of investors to these funds, according to the SEC. That created “historically larger capital gains distributions and tax liabilities” for many investors who remained in the more-expensive Investor share class, the agency said.

Here’s where the lesson applies: Those taxes were only borne by investors who held the TDFs in taxable brokerage accounts, not retirement accounts.

Investors who hold investments — whether a TDF or otherwise — in a tax-advantaged account like a 401(k) plan or individual retirement accounts don’t receive annual tax bills for capital gains or income distributions.

Those who hold “tax inefficient” assets — like many bond funds, actively managed funds and target-date funds — in a taxable account may get hit with a big unwelcome tax bill in any given year, experts said.

Placing such assets in retirement accounts can make a big difference when it comes to boosting net investment returns after taxes, especially for high earners, experts said.

“By having to pull money out of your coffers to pay the tax bill, it leaves less in your portfolio to compound and grow,” said Christine Benz, director of personal finance and retirement planning at Morningstar.

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Vanguard neither admitted nor denied wrongdoing in its settlement agreement with the SEC.

“Vanguard is committed to supporting the more than 50 million everyday investors and retirement savers who entrust us with their savings,” a company spokesperson wrote in an e-mailed statement. “We’re pleased to have reached this settlement and look forward to continuing to serve our investors with world-class investment options.”

Vanguard held about $1.3 trillion of assets in target-date funds at the end of 2023, according to Morningstar.

“A retired couple with a $2 million portfolio [$1 million in a taxable account and $1 million in a tax advantaged account] could potentially see a reduction in tax drag that equates to an additional $2,800 to $8,200 per year depending on their tax bracket,” Hayden Adams, a certified public accountant, certified financial planner, and director of tax and wealth management at the Schwab Center for Financial Research, wrote of the findings.

Tax inefficient assets — which are better suited to retirement accounts — are ones that “generate regular taxable events,” Adams wrote.

Here are some examples, according to experts:

• Bonds and bond funds. Bond income is generally taxed at ordinary income tax rates, instead of preferential capital-gains rates. (There are exceptions, like municipal bonds.)

• Actively managed investment funds. These generally have higher turnover due to frequent buying and selling of securities within the fund. They therefore tend to generate more taxable distributions than index funds, and those distributions are shared among all fund shareholders.

• Real estate investment trusts. REITs must distribute at least 90% of their income to shareholders, Adams wrote.

• Short-term holdings. The profit on investments held for a year or less are taxed at short-term capital gains rates, for which the preferential tax rates for “long term” capital gains don’t apply.

• Target-date funds. These and other funds that aim for a target asset allocation are a “bad bet” for taxable accounts, Benz said. They often hold tax inefficient assets like bonds and may need to sell appreciated securities to maintain their target allocation, she said.

About 90% of the potential additional after-tax return from asset location comes from two moves: switching to municipal bonds (instead of taxable bonds) in taxable accounts, and switching to index stock funds in taxable accounts and active stock funds in tax-advantaged accounts, Adams wrote.

Investors with municipal bonds or municipal money market funds avoid federal income tax on their distributions.

Exchange-traded funds also distribute capital gains to investors much less often than mutual funds, and may therefore make sense in taxable accounts, experts said.

When it comes to retirement savings, surveys often point to a big magic number you will need to have set aside to live well.

Yet retirement experts say to focus on another number — your personal savings rate — to make sure you achieve your retirement savings goals.

“Early in the year is an ideal time to reassess your retirement contributions and overall savings strategy because you can take advantage of any employer matches, adjust your monthly budget accordingly and stay ahead of potential market shifts,” said Douglas Boneparth, a certified financial planner and president and founder of Bone Fide Wealth, a wealth management firm based in New York City.

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What’s more, increasing your retirement savings now gives your money more time to compound — earning interest on both your contributions and previously earned interest. That can “significantly impact your nest egg over the long term,” said Boneparth, who is also a member of the CNBC FA Council.

If you have a 401(k) plan through your employer, now is a great time to look at your contribution rate, according to Mike Shamrell, vice president of thought leadership at Fidelity.

Most importantly, see how your savings rate corresponds to what your employer offers in terms of a company match, he said.

“It’s the closest thing a lot of people get to free money,” Shamrell said.

Oftentimes, companies have a match formula. If you’re not clear on how much you need to contribute to get the full match, contact your human resources department or 401(k) provider, Shamrell said.

Fidelity recommends saving at least 15% of your pre-tax income annually, including your contributions and money from your employer.

If you’re not quite there — or you want to save even more — even just a 1% increase in your deferral rate can make a big difference to your retirement savings over time, Shamrell said.

“It may not have the significant impact on your take-home pay that you that you may be envisioning,” Shamrell said.

The same contribution limits apply for 2025, though savers have additional time — up to April 15, 2026 — to make those contributions.

Savers may be able to deduct those IRA contributions, depending on their income.

If you’re worried about picking the wrong investment, you can instead opt for target date, asset allocation or balanced funds, which help decide how your funds are allotted for you, according to Marguerita Cheng, a certified financial planner and CEO of Blue Ocean Global Wealth in Gaithersburg, Maryland.

Also be sure to consider to your risk capacity — the amount of risk you can afford — as well as risk tolerance — the amount of risk you’re willing to take, said Cheng, who is also a member of the CNBC FA Council.

Identifying those personal limits ahead of time can help you stay the course during market turbulence, she said. Investors who bail during the market’s worst days may miss the best days, which often closely follow, research finds.

If you’ve had any major recent life events — gotten married, bought a house or had a baby, for example — you may also want to check that your allocations still correspond to your long-term plans, Shamrell said.

Inheriting an individual retirement account is a windfall for many investors.

However, a lesser-known change for 2025 could trigger a costly surprise penalty, financial experts say.

Starting in 2025, certain heirs with inherited IRAs must take yearly required withdrawals while emptying accounts over 10 years, known as the “10-year rule.”   

“The big change [for 2025] is the IRS is enforcing penalties for missed required distributions,” said certified financial planner Judson Meinhart, director of financial planning at Modera Wealth Management in Winston-Salem, North Carolina.

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There’s a 25% penalty for missing a required minimum distribution, or RMD, from an inherited IRA. But it’s possible to reduce the fee if your RMD is “timely corrected” within two years, according to the IRS.  

Here are the key things to know about the inherited IRA change. 

Before the Secure Act of 2019, heirs could withdraw funds from inherited IRAs over their lifetime, which helped reduce yearly income taxes.

Since 2020, certain inherited accounts have been subject to the “10-year rule,” meaning heirs must deplete inherited IRAs by the 10th year after the original account owner’s death.  

After years of waived penalties for missed RMDs from inherited IRAs, the IRS in July finalized guidance. Starting in 2025, certain beneficiaries must take yearly withdrawals during the 10-year window or they’ll face a penalty for missed RMDs.

The rule applies to heirs who are not a spouse, minor child, disabled, chronically ill or certain trusts — and the yearly withdrawals apply if the original IRA owner had reached their RMD age before death.

One group who could be impacted are adult children who inherited IRAs from their parents, according to CFP Edward Jastrem, chief planning officer at Heritage Financial Services in Westwood, Massachusetts.

But the rules have become a “spiderweb mess of decision-making,” he said.

For example, boosting adjusted gross income can impact things like Medicare Part B and Part D premiums, eligibility for the premium tax credit for Marketplace health insurance and more. 

Of course, timing inherited IRA withdrawals depends on your complete tax situation, including multi-year projections of your adjusted gross income, Meinhart said.