Rethinking Retirement Account Choices: Why One Size Doesn't Fit All

Many future retirees make a critical mistake by selecting a retirement account based on a long‑held assumption that often proves false. That assumption—that you'll be in a lower tax bracket after retirement—can lead you to choose the wrong type of account and ultimately reduce your spendable income. Let's explore this outdated belief and what you should consider instead.

What Is the Outdated Assumption That Many Retirees Base Their Savings On?

The most common outdated assumption is that you will be in a lower tax bracket after you retire. This belief has driven millions to favor traditional tax‑deferred accounts like 401(k)s and IRAs, where you get a tax break now but pay taxes when you withdraw. The assumption assumes your income—and thus your tax rate—will drop in retirement. However, for many retirees, this is no longer true. Rising healthcare costs, required minimum distributions (RMDs), and even part‑time work can keep you in a higher bracket than expected. Basing your entire savings strategy on this single assumption can lead to unexpected tax bills and less disposable income when you need it most.

Why Might Your Tax Bracket Stay Higher in Retirement Than You Think?

Several factors can keep your taxable income high after you stop working full‑time. Required minimum distributions (RMDs) from traditional accounts can push you into a higher bracket, especially if you've saved generously. Social Security benefits may become partially taxable if your combined income exceeds certain thresholds. Additionally, many retirees take on part‑time work or consulting gigs, which adds more taxable income. Healthcare costs, while often tax‑deductible, can also create a tax liability if they exceed a percentage of your income. Finally, state income taxes vary widely—you may move to a state with high taxes, further increasing your burden. All of these factors undermine the old assumption that retirement automatically means a lower tax rate.

How Does Choosing the Wrong Account Impact Your Retirement Income?

Selecting the wrong type of retirement account can reduce your income in two major ways. First, if you rely entirely on a traditional (pre‑tax) account, every dollar you withdraw is taxed as ordinary income. In retirement, that income may push you into a higher bracket, leaving you with less net income than planned. Second, traditional accounts often force you to take RMDs, which may not align with your actual spending needs. If you don't need the money, you still must withdraw it and pay taxes—potentially increasing your tax bill unnecessarily. On the other hand, Roth accounts allow tax‑free withdrawals and have no RMDs, but they require paying taxes now. The wrong choice can mean thousands of dollars in lost purchasing power each year.

What Should You Consider Instead of the Old Assumption?

Instead of assuming a lower future tax bracket, evaluate your actual projected retirement income and expenses. Use online calculators or work with a financial advisor to estimate your tax bracket based on realistic numbers. Consider diversifying your savings across account types—for example, having both traditional and Roth accounts. This gives you flexibility to manage your taxable income in retirement. Also, factor in potential changes to tax laws, your health, and your desired lifestyle. If you expect significant medical expenses, a Health Savings Account (HSA) might be a powerful complement. Remember, the best strategy is one that adapts to your personal situation, not a one‑size‑fits‑all assumption.

How Can You Diversify to Avoid This Pitfall?

Diversification means building a mix of taxable, tax‑deferred, and tax‑free accounts. For example, contribute to a traditional 401(k) up to the employer match, then consider a Roth IRA for tax‑free growth. If eligible, use an HSA for medical expenses with triple tax advantages. Also, a regular brokerage account gives you flexibility to sell assets with capital gains treatment. By having funds in different tax buckets, you can choose which account to withdraw from each year to keep your taxable income low. For instance, in a year with high medical expenses, you might draw from an HSA; in a low‑income year, you could convert some traditional IRA funds to a Roth at a lower rate. This strategy reduces the risk of being forced into a higher bracket.

What Is the First Step to Rethinking Your Retirement Account Strategy?

The first step is to stop relying on the old assumption and start collecting data. Review your current retirement savings, estimated Social Security benefits, and any pensions. Project your expenses in retirement, including healthcare, travel, and housing. Then, use a tax calculator to estimate your future marginal tax rate under different withdrawal scenarios. If you're still many years from retirement, you have time to adjust—consider increasing Roth contributions or converting some traditional funds now. Even small changes can make a big difference. Finally, revisit your plan every few years as tax laws and your personal circumstances evolve. An advisor who specializes in retirement income can help you build a sustainable strategy that isn't based on a single outdated assumption.