Early Retirement Financial Planning: Social Security, Medicare, Roth Conversions, and Health Care

By Trevor Scotto, CPA, CFP®

Most retirement planning resources assume you retire at or after age 65, when Medicare eligibility begins and Social Security full retirement age is close. Early retirees face a different reality. If you retire at 55, 58, or 62, you may spend several years without access to Medicare and several years before reaching your Social Security full retirement age.

For anyone born in 1960 or later, full retirement age is 67, according to the Social Security Administration (ssa.gov/benefits/retirement/planner/agereduction.html, accessed August 25, 2026). You can claim Social Security as early as 62, but doing so permanently reduces your monthly benefit by up to 30 percent. On the other end, delaying past full retirement age increases your benefit by 8 percent per year up to age 70.

Medicare eligibility begins at 65, regardless of when you retire, according to the Centers for Medicare and Medicaid Services (medicare.gov/basics/get-started-with-medicare/sign-up/when-does-medicare-coverage-start, accessed August 25, 2026). Retiring early does not accelerate Medicare eligibility. You must arrange alternative health care coverage for the years between retirement and age 65.

The combination of these rules creates a planning gap. During this gap, your decisions about Social Security, health care, and Roth conversions can affect each other in ways that are not always obvious.

Social Security is one of the few guaranteed, inflation-adjusted income sources available to retirees. The timing of your claim permanently affects your monthly benefit amount.

Claiming at 62: The Permanent Reduction

If you claim Social Security at age 62 and your full retirement age is 67, your benefit is reduced by approximately 30 percent, according to the SSA (ssa.gov/benefits/retirement/planner/agereduction.html, accessed August 25, 2026). For a worker whose full retirement age benefit is $2,000 per month, claiming at 62 would reduce the monthly payment to approximately $1,400.

This reduction is permanent. It does not reverse when you reach full retirement age. The SSA calculates the reduction based on the number of months between your claiming date and your full retirement age, using a formula of 5/9 of 1 percent for each of the first 36 months and 5/12 of 1 percent for additional months.

Delaying Past Full Retirement Age: The 8 Percent Credit

If you wait past your full retirement age to claim, your benefit increases by 8 percent for each full year you delay, up to age 70, according to the SSA (ssa.gov/oact/quickcalc/early_late.html, accessed August 25, 2026). For the same worker with a $2,000 full retirement age benefit, delaying to age 70 could increase the monthly payment to approximately $2,480.

The Earnings Test If You Work in Early Retirement

If you claim Social Security before full retirement age and continue to work, the SSA may withhold benefits if your earnings exceed certain limits. For 2026, the SSA withholds $1 for every $2 earned above $24,480 if you are under full retirement age for the entire year (ssa.gov/benefits/retirement/planner/whileworking.html, accessed August 25, 2026). In the year you reach full retirement age, the threshold increases to $65,160, with $1 withheld for every $3 earned above that amount, counting only earnings through the month before you reach full retirement age.

Benefits withheld under the earnings test are not necessarily lost permanently. The SSA recalculates your benefit at full retirement age to account for months when benefits were withheld.

How a CPA-Integrated Advisor Approaches the Decision

The claiming decision is not purely a break-even calculation. Your tax situation, life expectancy, spousal benefits, and other income sources all factor in. A CPA-integrated advisor can model the tax implications of claiming at different ages, including how Social Security income interacts with your other sources of income and affects your overall tax liability. For clients with significant equity compensation or other income sources, the optimal claiming strategy may depend on when you plan to sell concentrated stock positions or exercise options.

If you are exploring equity compensation strategies in the context of early retirement, our equity compensation planning services provide additional context on coordinating stock decisions with retirement income planning.

For early retirees under 65, the Affordable Care Act (ACA) Marketplace is often the primary source of health insurance. ACA premium tax credits can significantly reduce monthly premiums, but these credits are tied to your household income, which creates a planning challenge.

How ACA Subsidies Work

ACA premium tax credits are available to households with income between 100 percent and 400 percent of the federal poverty level (FPL). The credit reduces your monthly premium for a benchmark Silver plan, and the amount of the credit depends on your household income relative to the FPL.

For 2026 coverage, the 400 percent FPL threshold is approximately $63,840 for a single person and $86,560 for a two-person household in the contiguous United States, based on the 2026 federal poverty guidelines (healthcare.gov, accessed August 25, 2026). Exceeding this threshold by even a small amount may eliminate your entire premium tax credit.

The 2026 Cliff and No Repayment Cap

Beginning with 2026 coverage, the 400 percent FPL cliff returns. If your household income exceeds 400 percent of FPL, you lose all premium tax credits. Additionally, if you received advance premium tax credits during the year and your final income exceeds the threshold, you may have to repay all of the advance credits. There is no repayment cap for excess advance premium tax credits in 2026, according to IRS guidance (irs.gov, accessed August 25, 2026).

This means a Roth conversion or a capital gain that pushes your income slightly above the threshold could cost far more than the additional tax on the conversion itself. The lost subsidy and repayment obligation could dwarf the tax savings from the conversion.

What Counts Toward ACA MAGI

ACA modified adjusted gross income (MAGI) generally includes wages, interest, dividends, capital gains, pension income, taxable Social Security, traditional IRA withdrawals, and Roth conversions, according to the IRS (irs.gov/credits-deductions/modified-adjusted-gross-income, accessed August 25, 2026). Qualified Roth IRA withdrawals generally do not count toward ACA MAGI.

This distinction matters for early retirees. If you have built a Roth IRA through conversions or direct contributions, withdrawals from the Roth account can fund living expenses without increasing your ACA household income. This can help you stay below the 400 percent FPL threshold and preserve your premium tax credits.

Medicare eligibility begins at age 65, and the enrollment rules are strict. Missing deadlines can result in permanent late enrollment penalties and coverage gaps.

Your Initial Enrollment Period

Your Initial Enrollment Period (IEP) is a seven-month window that begins three months before the month you turn 65, includes your birthday month, and extends three months after, according to CMS (medicare.gov/basics/get-started-with-medicare/sign-up/when-does-medicare-coverage-start, accessed August 25, 2026). If you turn 65 in October, your IEP runs from July 1 through January 31 of the following year.

If you are already receiving Social Security benefits when you turn 65, you are generally enrolled in Medicare Parts A and B automatically. If you are not yet receiving Social Security, you must apply through the Social Security Administration.

Special Enrollment Period If You or Your Spouse Are Still Working

If you or your spouse have group health coverage based on current employment, you may be able to delay Medicare Part B without a late enrollment penalty, according to CMS (medicare.gov/basics/get-started-with-medicare/medicare-basics/working-past-65, accessed August 25, 2026). When employment or coverage ends, you have an eight-month Special Enrollment Period to enroll in Part B.

Important: COBRA and retiree health coverage generally do not count as coverage based on current employment. If you retire at 65 and move to COBRA, do not assume COBRA extends your Medicare Part B deadline.

Late Enrollment Penalties

If you miss your Initial Enrollment Period and do not qualify for a Special Enrollment Period, you can enroll during the General Enrollment Period from January 1 through March 31 each year. However, you may face a Part B late enrollment penalty of 10 percent of the standard premium for each full 12-month period you could have had Part B but did not enroll, according to CMS. This penalty typically lasts as long as you have Medicare Part B.

The HSA Interaction

If you have a Health Savings Account (HSA) through a high-deductible health plan, Medicare enrollment can affect your ability to contribute. Medicare advises stopping HSA contributions approximately six months before applying for Social Security or Medicare, because premium-free Part A may be retroactive up to six months. Contributing to an HSA after Medicare enrollment, including retroactive enrollment, may result in excess contribution penalties.

Medigap Open Enrollment

If you choose Original Medicare, your best opportunity to buy a Medigap supplement is the six-month open enrollment period that begins when you are 65 or older and enrolled in Part B. During this window, insurers generally cannot deny coverage or charge higher premiums based on preexisting conditions. Delaying Part B also delays this Medigap window.

For early retirees, the years between retirement and required minimum distributions (RMDs) may present a tax planning opportunity. If your income drops after you stop working, you may be in a lower tax bracket. This can make Roth conversions attractive, because you pay income tax on the converted amount at your current rate, and future growth in the Roth account is generally tax-free.

How a Roth Conversion Works

A Roth conversion involves moving money from a traditional IRA, 401(k), or similar pre-tax account into a Roth IRA. You pay ordinary income tax on the taxable amount in the year of the conversion. Once the funds are in the Roth IRA, qualified withdrawals are generally tax-free, and Roth IRAs are not subject to RMDs during your lifetime.

The Roth Conversion Ladder

Some early retirees use a strategy called a Roth conversion ladder. Each year, you convert a portion of your traditional retirement account to a Roth IRA. Each conversion starts its own five-year clock. After five tax years, the converted principal can generally be withdrawn without the 10 percent early distribution penalty, even if you are under 59 1/2. This can provide access to retirement funds before age 59 1/2 without paying the penalty.

However, the conversion itself is taxable income in the year it occurs. It is included in your ACA MAGI, which means it can affect your premium tax credits if you are on Marketplace coverage. The interplay between conversion amounts, tax brackets, ACA subsidies, and future RMDs requires careful modeling.

The ACA MAGI Trade-Off

This is where the Roth conversion and ACA subsidy decisions collide. Every dollar you convert increases your ACA MAGI. If your income is already near the 400 percent FPL threshold, a conversion could push you over the cliff and eliminate your premium tax credits.

A CPA-integrated advisor can model multiple scenarios: no conversion, a conversion sized to stay below the ACA threshold, and a larger conversion that sacrifices the subsidy. The comparison should weigh the immediate lost subsidy against the long-term tax savings from building a Roth pipeline and reducing future RMDs.

IRMAA: The Medicare Surcharge Connection

Roth conversions also affect Medicare premiums through the Income-Related Monthly Adjustment Amount (IRMAA). If your modified adjusted gross income from two years prior exceeds certain thresholds, you pay higher premiums for Medicare Part B and Part D. A large conversion in one year could trigger IRMAA surcharges two years later. This is another reason to model conversion amounts carefully rather than converting aggressively in a single year.

Each of these decisions, Social Security timing, health care coverage, Medicare enrollment, and Roth conversions, affects the others. A CPA-integrated, fee-only fiduciary advisor is positioned to coordinate them because tax expertise is built into the planning process rather than added as an afterthought.

For example, the decision to claim Social Security at 62 versus 67 affects your taxable income, which affects your ACA subsidy eligibility, which affects how much you can convert to a Roth IRA, which affects your future RMDs and IRMAA surcharges. Treating any of these decisions in isolation may produce a suboptimal outcome.

Our tax planning services are designed to integrate tax strategy with retirement income planning, not just prepare your annual return. For high-net-worth retirees navigating this transition, our work with high-net-worth clients provides additional context on how we approach complex retirement income and tax coordination.

For more articles on retirement, tax planning, and equity compensation, visit our news and insights page.

Can I get Medicare before age 65 if I retire early?

No. Medicare eligibility generally begins at age 65, regardless of when you retire. Retiring early does not accelerate Medicare eligibility. Before age 65, you typically need employer coverage, COBRA, ACA Marketplace coverage, or another health plan. If you or your spouse have group health coverage based on current employment, you may be able to delay Medicare Part B without a late enrollment penalty and enroll during an eight-month Special Enrollment Period after employment or coverage ends.

How much does claiming Social Security at 62 reduce my benefit?

If your full retirement age is 67, claiming at 62 reduces your benefit by approximately 30 percent, according to the Social Security Administration (ssa.gov/benefits/retirement/planner/agereduction.html, accessed August 25, 2026). For a worker with a full retirement age benefit of $2,000 per month, the age 62 benefit would be approximately $1,400. This reduction is permanent and does not reverse at full retirement age.

Do Roth conversions affect ACA premium tax credits?

Yes. Roth conversions are included dollar-for-dollar in your ACA modified adjusted gross income (MAGI) for the year of the conversion, according to the IRS (irs.gov/credits-deductions/modified-adjusted-gross-income, accessed August 25, 2026). If your household income exceeds 400 percent of the federal poverty level, you may lose all premium tax credits. For 2026 coverage, the 400 percent FPL threshold is approximately $63,840 for a single person and $86,560 for a two-person household in the contiguous United States.

What is a Roth conversion ladder?

A Roth conversion ladder is a strategy where you convert a portion of your traditional retirement account to a Roth IRA each year. Each conversion starts its own five-year clock. After five tax years, the converted principal can generally be withdrawn without the 10 percent early distribution penalty, even if you are under 59 1/2. This can provide early access to retirement funds, but the conversion amount is taxable income in the year it occurs and affects ACA MAGI and potentially IRMAA surcharges.

Will a Roth conversion affect my Medicare premiums?

It may. Medicare premiums are affected by IRMAA (Income-Related Monthly Adjustment Amount), which is based on your modified adjusted gross income from two years prior. A large Roth conversion in one year could trigger higher Medicare Part B and Part D premiums two years later. This is separate from the ACA MAGI impact and should be modeled alongside it.

When should I stop contributing to my HSA before Medicare?

Medicare advises stopping HSA contributions approximately six months before applying for Social Security or Medicare, because premium-free Part A may be retroactive up to six months. Contributing to an HSA after Medicare enrollment, including retroactive enrollment, may result in excess contribution penalties. If you plan to claim Social Security at 65 and enroll in Medicare, you may need to stop HSA contributions earlier than expected.

By Trevor Scotto, CPA, CFP®. Trevor Scotto is a CPA and CFP® professional at Fiduciary Financial Group, a fee-only, fiduciary wealth management firm with offices in San Rafael, Walnut Creek, Boise, and Ada County. FFG integrates CPA expertise with comprehensive financial planning to serve high-net-worth retirees, executives, tech professionals, and business owners.

This article has been reviewed for accuracy and compliance.