29 Oct Retirement Account Diversification: Why It Matters

Retirement Account Diversification: Are All Your Savings Taxed the Same Way?

You’ve spent years saving for retirement. Your investments may include stocks, bonds, mutual funds, and exchange-traded funds (ETFs). You’ve worked to diversify your portfolio and manage investment risk.

But here’s a question you may not have considered: Have you diversified how your retirement savings will be taxed?

Many investors focus on what they own without giving equal consideration to where those investments are held.

That distinction can become particularly important when retirement begins and it’s time to start withdrawing money.

At Nova Wealth Management, we believe retirement account diversification deserves consideration alongside traditional investment diversification because the types of accounts you own can influence your taxes, retirement income, and financial flexibility.

Investment Diversification vs. Retirement Account Diversification

Investment diversification involves spreading money among different types of investments to help manage risk.

Retirement account diversification, sometimes called tax diversification, involves holding savings across accounts with different tax treatments.

These generally fall into three categories:

• Tax-deferred accounts: Traditional IRAs and traditional 401(k)s generally allow investments to grow without annual taxation inside the account. Withdrawals are generally subject to ordinary income tax, except for amounts representing previously taxed contributions.
• Tax-free qualified withdrawal accounts: Roth IRAs and designated Roth 401(k) accounts are funded with after-tax contributions. Qualified withdrawals are generally tax-free.
• Taxable investment accounts: Brokerage accounts generally allow access to investments without retirement-account withdrawal restrictions, although dividends, interest, and realized capital gains may create taxes.

Each account type has different rules and potential advantages.

Having savings in more than one category may provide additional choices when determining how to fund retirement expenses.

Why Having Most of Your Retirement Savings in One Account Can Matter

Imagine you’ve accumulated $2 million for retirement.

You’ve diversified your investments across stocks, bonds, and funds, but nearly all your savings are held in a traditional IRA.

From an investment perspective, your portfolio may be diversified.

From a tax perspective, however, most withdrawals may be treated as ordinary income.

Now imagine you need an additional $100,000 for a major expense, such as purchasing a vehicle, renovating your home, or helping a family member.

If that money comes entirely from a traditional IRA, the taxable withdrawal could increase your income for the year.

Depending on your circumstances, that additional income could affect your marginal tax rate, the taxation of Social Security benefits, and future Medicare premiums.

The challenge isn’t necessarily having a traditional IRA. It’s having limited alternatives when you need to access your money.

How Retirement Withdrawals Can Affect Medicare and Social Security

Retirement income decisions can affect more than your federal income tax bill.

For example, Medicare uses income-related monthly adjustment amounts (IRMAA) to determine whether certain beneficiaries pay additional premiums for Medicare Parts B and D.

These calculations generally rely on income information from two years earlier.

A large taxable IRA withdrawal or Roth conversion could therefore influence Medicare premiums in a future year.

Additional taxable income may also increase the portion of Social Security benefits subject to federal income tax, depending on your overall income.

Having access to accounts with different tax treatments may provide more options when coordinating retirement withdrawals with these considerations.

However, tax outcomes depend on individual circumstances, and no account combination eliminates every potential tax consequence.

Could Roth Conversions Help Diversify Your Retirement Accounts?

For some individuals, a Roth conversion may be one way to increase tax diversification.

A Roth conversion involves moving money from a traditional retirement account into a Roth account, generally creating taxable income in the year of conversion.

In exchange, qualified Roth withdrawals may be tax-free in the future.

One period worth evaluating is the time between retirement and the beginning of required minimum distributions (RMDs).

Someone who retires before claiming Social Security or beginning RMDs may experience years with comparatively lower taxable income.

Those years could provide an opportunity to evaluate partial Roth conversions.

However, conversions are not appropriate for everyone. They can increase current taxes, affect Medicare premiums, and create other financial consequences.

The objective isn’t simply to pay less tax this year. It’s to evaluate how financial decisions may affect taxes throughout retirement.

What Happens to Different Retirement Accounts When You Leave Them to Your Heirs?

Retirement account diversification can also influence estate planning.

Under current inherited IRA rules, many non-spouse beneficiaries must empty inherited retirement accounts within 10 years.

Inherited traditional IRA distributions are generally taxable to beneficiaries, except for any applicable after-tax basis.

For adult children who inherit retirement accounts during their highest-earning years, these distributions may increase their tax obligations.

Inherited Roth IRAs are generally subject to the same 10-year distribution deadline for many non-spouse beneficiaries, but qualified withdrawals are typically tax-free.

Taxable brokerage assets may also receive an adjustment in cost basis at death, depending on applicable tax rules and circumstances.

These differences illustrate why the types of accounts you leave behind can matter alongside the total value of your estate.

Investment Types and Accounts to Consider

Retirement account diversification may involve evaluating several types of accounts and investments, including:

• Traditional IRA: Tax-deferred retirement savings with generally taxable withdrawals.
• Roth IRA: After-tax retirement savings with potentially tax-free qualified withdrawals.
• 401(k) and Roth 401(k): Employer-sponsored retirement accounts with different contribution and withdrawal tax treatments.
• Brokerage Account: Taxable investments that may provide flexibility for retirement withdrawals.
• Money Market Account: A potential source of liquidity for shorter-term financial needs, subject to account features and applicable taxes.

The appropriate combination depends on your income, age, retirement timeline, tax circumstances, and financial objectives.

Frequently Asked Questions About Retirement Account Diversification

Is it better to have both a traditional IRA and a Roth IRA?

Having both may provide flexibility because withdrawals are subject to different tax rules. However, the appropriate account combination depends on current and anticipated future tax circumstances, contribution eligibility, and retirement goals.

Can withdrawing money from an IRA increase Medicare premiums?

Yes. Taxable IRA withdrawals may increase modified adjusted gross income used to calculate Medicare IRMAA. Higher income in one year can affect Medicare Part B and D premiums, generally two years later.

Should I convert my traditional IRA to a Roth IRA before retirement?

Not necessarily. Roth conversions may be worth evaluating before or after retirement, but they create current tax consequences. The decision should consider your tax bracket, future income expectations, available cash to pay taxes, and overall financial plan.

Next Steps: Is Your Retirement Savings Strategy Tax-Diversified?

Having a diversified investment portfolio is important, but understanding how your retirement accounts will be taxed can be equally relevant.

At Nova Wealth Management, we help individuals and families in Bonita Springs, Naples, Estero, Fort Myers, and throughout Southwest Florida evaluate retirement income, investment management, and tax-aware withdrawal strategies.

As an independent Registered Investment Advisor, we focus on developing financial plans that reflect each client’s individual circumstances and long-term objectives.

Have you considered how your retirement accounts will be taxed when you begin making withdrawals?

Schedule your planning session to discuss your retirement income strategy.

Nova Wealth Management
Toll-Free: 1-888-677-9910
Bonita Springs Office: 239-444-1794

Source: Barron’s, Christopher C. Giambrone, October 28, 2026. Licensed through AdvisorStream.

Disclosure: This material is provided for general educational and informational purposes only and does not constitute individualized investment, tax, or legal advice. Tax laws and retirement account rules may change. Roth conversions and retirement withdrawals can create tax consequences and may not be appropriate for every investor. Investing involves risk, including possible loss of principal. Nova Wealth Management, Inc. is a Registered Investment Advisor.