After You Retire, Leaving All Your Investments in One Bucket Could Cost You in the Long Run

Missy E
November 14, 2025

Key Takeaways

Relying solely on one investment account or asset type in retirement can increase your tax burden, reduce flexibility, and limit your income stability in the long run.
Strategic asset diversification and withdrawal planning across different tax treatments can help preserve your retirement savings and support long-term financial sustainability.

Why One Investment Bucket Is a Risky Retirement Move

Many government employees enter retirement with most of their wealth concentrated in one account, such as a Thrift Savings Plan (TSP) or a traditional IRA. While this may seem convenient, it often leads to unintended tax consequences, missed income opportunities, and inadequate protection against inflation or market volatility.

In 2025, with longer life expectancy and rising healthcare costs, simply relying on a single income stream or investment type is no longer sustainable. You need a structure that allows flexibility, control, and adaptability across different financial conditions.

The Problem With Keeping Everything in One Tax-Deferred Account

Most retirees who built their savings in the TSP or other traditional retirement accounts enjoy years of tax deferral. But once you begin withdrawing funds, those distributions are fully taxable as ordinary income.

Here’s what that means for your retirement:

Required Minimum Distributions (RMDs) begin at age 73, and they increase each year. Large RMDs can push you into a higher tax bracket.
Social Security taxation can increase if your income from withdrawals raises your combined income.
Medicare Part B and Part D premiums can rise due to income-related monthly adjustment amounts (IRMAA).

In other words, that tax-deferred bucket becomes a tax trap unless you start managing it early with proactive withdrawal and diversification strategies.

You Have More Than One Type of Retirement Asset—Use Them Wisely

If you’re like many public sector employees, you may also have one or more of the following in addition to your TSP:

A Roth IRA or Roth TSP
A taxable brokerage account
A pension (like FERS)
Social Security benefits
Possibly rental property or other income sources

Each of these has its own tax treatment, withdrawal flexibility, and income characteristics. The key is coordinating them to:

Smooth out your tax burden year to year
Maximize tax-efficient withdrawals
Maintain income through different market cycles
Reduce pressure on any single account

Asset Location Matters as Much as Asset Allocation

Diversifying across stocks, bonds, and other asset classes is only part of the story. Where you hold those assets also affects your financial outcome. This is called “asset location.”

For example:

Tax-efficient investments (like index funds) often belong in taxable brokerage accounts.
Growth assets may be best in Roth accounts, where gains are tax-free.
Income-producing assets like bonds may be better suited for traditional IRAs or TSP accounts.

By optimizing where each investment lives, you can reduce your overall tax liability and keep more of your returns.

Consider a Bucket Strategy for Income Planning

A retirement bucket strategy divides your assets based on the timeline of when you’ll need the funds. Typically, it looks like this:

Bucket 1 (Years 1–3): Cash and cash equivalents for immediate income needs
Bucket 2 (Years 4–10): Bonds or conservative investments to replenish Bucket 1
Bucket 3 (Years 11+): Growth investments like stocks for long-term appreciation

This approach creates a stable income stream without forcing you to sell long-term assets in a downturn. It also gives your growth assets time to recover and compound.

In 2025’s volatile markets, having cash flow that doesn’t rely solely on equities can shield you from emotional, costly decisions.

Don’t Forget Roth Conversions—But Time Them Right

Roth conversions can be a powerful tool for creating tax diversification. When you convert money from a traditional account to a Roth, you pay tax now but enjoy tax-free growth and withdrawals later.

However, converting too much in one year can push you into a higher tax bracket, trigger higher Medicare premiums, and increase your Social Security taxation.

Smart conversion timing may include:

Years between retirement and age 73, before RMDs start
Years with lower income (such as after retiring but before claiming Social Security)

Creating a Roth balance now can give you flexibility later, especially when taxable income must be managed carefully.

Watch Out for Sequence of Returns Risk

If you withdraw from your investment accounts during a market downturn early in retirement, you could permanently damage your portfolio’s ability to recover. This is known as sequence of returns risk.

A single investment bucket strategy increases this risk, because you might have to sell depreciated assets to cover your needs.

By splitting assets into time-based buckets, and holding safe assets for near-term income, you can avoid forced sales during down markets.

Taxable Accounts Can Offer More Than You Think

Many overlook taxable brokerage accounts in retirement planning, but they can be a valuable bridge or supplement:

Withdrawals are flexible, with no RMDs
Only capital gains are taxed (and possibly at lower rates than ordinary income)
Losses can offset gains, reducing tax liability
They can be used to fill income gaps before Social Security or RMDs begin

Incorporating taxable assets helps spread your tax exposure and avoid sudden income spikes later in retirement.

Income Layering: A Smarter Approach to Withdrawals

Instead of drawing all your retirement income from one source, consider layering it. Think of your income in this order:

Pension income (like FERS)
Social Security
Taxable accounts
Roth IRAs
Tax-deferred accounts (TSP, traditional IRA)

This structure gives you control. You can tap the accounts that are most tax-efficient at a given time. It also allows you to:

Delay Social Security to increase benefits
Reduce RMDs later through early withdrawals
Preserve Roth accounts for legacy or high-expense years

Flexibility here often results in lower taxes, better healthcare premiums, and a more balanced financial picture.

Required Minimum Distributions Could Become Your Biggest Liability

In 2025, RMDs start at age 73. By the time you’re in your 80s, these distributions can become quite large, especially if your accounts have continued to grow.

This can:

Trigger taxation of up to 85% of your Social Security
Push you into higher tax brackets
Cause IRMAA surcharges for Medicare
Reduce your eligibility for certain benefits or credits

Taking smaller withdrawals earlier—or using Roth conversions and taxable accounts—can reduce the size of future RMDs.

Investment Consolidation Can Still Make Sense—But With a Plan

Spreading out your assets doesn’t mean you need 10 different custodians. Consolidation can still reduce administrative burdens and help you stay organized.

But be strategic:

Combine similar accounts (e.g., multiple traditional IRAs)
Use a single advisor or platform to manage your diversified strategy
Ensure your withdrawal order and tax management still align with your goals

Don’t confuse consolidation with concentration. The former is administrative. The latter is a risk.

The Cost of Simplicity Can Be Steep

It’s tempting to leave everything in one place after you retire. After all, managing multiple accounts and tax strategies can feel overwhelming. But simplicity isn’t always safety.

The long-term cost of not diversifying across accounts, asset types, and tax treatments can include:

Higher lifetime taxes
Reduced healthcare affordability
Lower investment growth
Greater risk during market declines

A diversified and layered strategy isn’t just smart—it’s essential to protecting your retirement in today’s environment.

Rethinking the One-Bucket Strategy for a More Secure Future

You worked hard to build your retirement savings—don’t let poor distribution planning or overconcentration undermine it. A multi-bucket approach, with attention to tax treatment, asset location, and sequence risk, offers better protection and more flexibility as your needs change.

Talk with a licensed agent listed on this website to review your account types, withdrawal options, and income structure. Getting it right today can help you protect your tomorrow.