What Every Retirement Plan Should Consider

Retirement planning is far more complex than many individuals expect. A well-designed plan can potentially save substantial amounts in lifetime taxes and help preserve wealth for future generations.

Retirement planning is not just about saving more. It also requires deciding which accounts to use, when to pay taxes, and how retirement income may affect Medicare premiums later. For many investors, the key challenge is balancing a Traditional IRA, a Roth IRA, a regular 401(k), a Roth 401(k), taxable investment accounts, Social Security, and future required withdrawals.

A good retirement plan should answer four questions:

• Should I save pre-tax or after-tax?
• Will my tax rate be higher or lower in retirement?
• How will Required Minimum Distributions affect my income?
• Could my retirement income trigger higher Medicare premiums through IRMAA?

Traditional IRA vs. Roth IRA: The Core Difference

A Traditional IRA may provide a tax deduction today. Contributions and investment earnings generally grow tax-deferred, but withdrawals are usually taxed as ordinary income. The deduction may be limited if you or your spouse is covered by a workplace retirement plan and your income exceeds IRS thresholds. For 2026, the IRA contribution limit is $7,500, with an additional $1,100 catch-up contribution for those age 50 or older. (IRS)

A Roth IRA works differently. Contributions are made with after-tax dollars, but qualified withdrawals can be tax-free. Roth IRAs can be especially useful for investors who expect tax rates to rise, anticipate higher income later, or want more flexibility in retirement. Roth IRA eligibility is subject to income limits. For 2026, Roth IRA contributions phase out between $153,000 and $168,000 for single filers and between $242,000 and $252,000 for married couples filing jointly. (IRS)

A simplified rule is this: use Traditional IRA dollars when today’s tax deduction is more valuable; use Roth IRA dollars when future tax-free flexibility is more valuable.

Why Roth Flexibility Matters in Retirement

One of the most important Roth IRA advantages is that the original owner is not required to take lifetime Required Minimum Distributions. The IRS states that Roth IRA owners are not required to take distributions at any age during life, although beneficiaries may be subject to distribution rules after the owner’s death. (IRS)

That flexibility can be valuable because qualified Roth withdrawals generally do not increase taxable income. This gives retirees a tax-control tool. In years when taxable income is already high, a retiree may draw from Roth assets instead of taking additional taxable withdrawals from a Traditional IRA.

Required Minimum Distributions: The Hidden Tax Timing Issue

Traditional IRAs, SEP IRAs, and SIMPLE IRAs are subject to Required Minimum Distributions, commonly called RMDs. Under current IRS rules, account owners generally must begin annual RMDs at age 73. For IRAs, the first RMD can be delayed until April 1 of the year after the account owner turns 73. (IRS)

Delaying the first RMD may sound attractive, but it can create a tax problem. If the first RMD is delayed until the following April, the retiree may need to take two RMDs in the same calendar year: the delayed first RMD and the regular second-year RMD by December 31. The IRS specifically warns that this can cause two required distributions to fall in the same tax year. (IRS)

Missing an RMD can also be costly. The penalty may be 25% of the amount not withdrawn, reduced to 10% if corrected within the allowed correction window. (IRS)

IRMAA: The Medicare Tax Trap Many Retirees Miss

IRMAA stands for Income-Related Monthly Adjustment Amount. It is an extra premium charged to higher-income Medicare beneficiaries for Medicare Part B and Part D.

An important planning detail is that Medicare generally looks at your tax return from two years earlier. For example, 2026 Medicare IRMAA is generally based on 2024 modified adjusted gross income. (Social Security)

For 2026, the standard Medicare Part B monthly premium is $202.90. However, higher-income retirees may pay more. In 2026, IRMAA begins above $109,000 of MAGI for individual filers and above $218,000 for married couples filing jointly. At the highest bracket, Part B premiums can rise to $689.90 per month, plus additional Part D IRMAA. (Medicare)

This matters because Roth conversions, capital gains, large IRA withdrawals, business income, and RMDs can all increase MAGI. A one-time income spike may not only increase taxes, but also raise Medicare premiums two years later.

Roth Conversions: Useful, But Must Be Managed Carefully

A Roth conversion moves assets from a Traditional IRA to a Roth IRA. The converted amount is generally taxable in the year of conversion. The benefit is that future qualified Roth withdrawals may be tax-free, and Roth IRA assets are not subject to lifetime RMDs.

The best time to consider Roth conversions is often during the “gap years” after retirement but before Social Security, Medicare IRMAA exposure, and RMDs fully begin. During these years, taxable income may be lower, creating room to convert at reasonable tax rates.

However, Roth conversions should be coordinated carefully. Converting too much in one year can push a retiree into a higher tax bracket, increase taxation of Social Security benefits, or trigger future IRMAA surcharges.

Practical Retirement Planning Strategy

A strong IRA and Roth IRA strategy usually includes three buckets:

Tax-deferred bucket: Traditional IRA, 401(k), SEP IRA, and SIMPLE IRA.
Useful for tax deductions today, but future withdrawals are taxable and may create RMD pressure.

Tax-free bucket: Roth IRA and Roth 401(k).
Useful for tax-free flexibility, estate planning, and managing taxable income in retirement.

Taxable bucket: Brokerage accounts.
Useful for liquidity, capital gains planning, tax-loss harvesting, and flexibility before age 59½.

The goal is not to put everything in one bucket. The goal is to create tax diversification so you can choose where income comes from each year.

Key Planning Moves Before Retirement

Before retirement, investors should review whether they are saving enough in Roth accounts, whether they are overconcentrated in tax-deferred accounts, and whether future RMDs may become larger than needed. High-income earners who are not eligible for direct Roth IRA contributions may also want to evaluate backdoor Roth strategies, subject to the pro-rata rule and individual tax circumstances.

Key Planning Moves After Retirement

After retirement, the focus shifts from accumulation to income control. Retirees should build a withdrawal plan before RMDs begin, evaluate partial Roth conversions during lower-income years, and monitor Medicare IRMAA brackets before realizing large capital gains or taking unusually large IRA distributions.

Charitably inclined retirees may also consider Qualified Charitable Distributions, or QCDs, which can allow certain IRA distributions to go directly to charity and potentially satisfy RMD obligations without increasing taxable income, subject to specific rules.

Bottom Line

Traditional IRAs and Roth IRAs are not simply retirement accounts. They are tax-planning tools.

A Traditional IRA may reduce taxes today, but it can create taxable income later through withdrawals and RMDs. A Roth IRA does not provide the same upfront deduction, but it can provide valuable tax-free flexibility in retirement. IRMAA adds another layer: retirement income decisions can affect not only income taxes, but also Medicare premiums.

The best retirement plan is built before these rules force action. By coordinating IRA contributions, Roth savings, Roth conversions, RMD timing, and Medicare premium planning, investors can create a more flexible and tax-efficient retirement income strategy.

Disclosure: This article is for educational purposes only and does not constitute tax, legal, or investment advice. Retirement and tax planning should be evaluated based on each person’s income, assets, age, filing status, and long-term objectives.