OBBBA Framework: Healthcare and Tax Planning for Seniors
You're in your early 60s, and the math is starting to feel urgent. You know Social Security is an option at 62, but you've heard waiting could mean a bigger check. Medicare doesn't start until 65, so you need to figure out health insurance for the gap years. And somewhere in the background, there's the question of when to start pulling from retirement accounts and how much those withdrawals might cost you in taxes or lost subsidies you didn't even know existed.
This is the reality for many late-career professionals navigating the gap between employment and Medicare eligibility. The decisions you make in this window (roughly ages 55 to 70) can dramatically affect your healthcare costs, tax liability, and retirement account longevity. Getting the order wrong could cost you approximately $50,000 to $100,000 over a decade, according to Kaiser Family Foundation research on Medicare beneficiary out-of-pocket healthcare spending.
OBBBA stands for Other Benefits Before Benefits, After. It's a decision framework that helps you determine the optimal sequence for claiming Social Security, starting Medicare, accessing health insurance subsidies, and making retirement account withdrawals.
The core principle: maximize subsidized benefits and minimize lifetime taxes by carefully controlling your taxable income during the transition years.
Understanding the Medicare and ACA Subsidy Window
Before you turn 65 and become Medicare-eligible, you may qualify for substantial Affordable Care Act premium tax credits if your income falls below certain thresholds. For 2025, subsidies are available for individuals with modified adjusted gross income (MAGI) up to approximately 400% of the federal poverty level (roughly $60,000 for a single person or $81,000 for a couple).
Important to note: these subsidies can be worth $10,000 to $20,000 annually, but they disappear entirely once you enroll in Medicare. Meanwhile, Social Security benefits become taxable when your combined income exceeds $25,000 (single) or $32,000 (married filing jointly), with up to 85% of benefits potentially subject to federal income tax.
A key opportunity: by delaying Social Security and carefully managing retirement account withdrawals, you could secure several years of heavily subsidized health coverage before Medicare.
A potential risk: if you withdraw too much from traditional IRAs or claim Social Security too early, you may eliminate subsidy eligibility and trigger higher lifetime taxes.
The OBBBA Framework: What to Access When
Ages 55-65: Prioritize ACA Subsidies and Tax-Efficient Withdrawals
During the pre-Medicare window, your goal may be to keep MAGI low enough to qualify for ACA premium tax credits. This typically means:
- Drawing from Roth accounts or taxable brokerage accounts first (which don't increase MAGI the same way traditional IRA withdrawals do)
- Delaying Social Security if you can afford to, allowing your benefit to grow by approximately 8% annually between ages 62 and 70
- Using cash reserves or severance strategically to bridge income gaps
- Potentially converting portions of traditional IRAs to Roth accounts in low-income years to reduce future required minimum distributions (RMDs)
According to research from the Social Security Administration, delaying Social Security from 62 to 70 could increase lifetime benefits by approximately 76% for those who live to average life expectancy. However, this strategy only works if you can cover healthcare and living expenses without triggering subsidy loss.
Ages 65-70: Medicare Begins, Social Security Timing Becomes Critical
Once you enroll in Medicare Part B at 65, ACA subsidies end. Now the framework shifts:
- Medicare premiums for 2025 start at approximately $185 monthly for Part B, but high-income earners may pay substantially more through Income-Related Monthly Adjustment Amounts (IRMAA)
- IRMAA surcharges are based on MAGI from two years prior, meaning your income decisions at 63 affect your Medicare costs at 65
- For 2025, IRMAA brackets start at approximately $106,000 for individuals or $212,000 for couples, with the highest earners potentially paying $594 monthly for Part B alone
If you've delayed Social Security beyond full retirement age (67 for those born in 1960 or later), you now have a window to optimize the claiming decision based on longevity assumptions, spousal benefits, and tax planning. For married couples, coordinating Social Security timing with Medicare enrollment and Roth conversions may be particularly valuable.
Ages 70+: RMDs and Distribution Strategy
At age 73 (under current law), required minimum distributions from traditional IRAs and 401(k)s begin. The "before benefits, after" principle here means you may have already optimized your situation by:
- Delaying Social Security to 70 to maximize lifetime benefits
- Converting traditional IRA assets to Roth accounts during low-income years before RMDs begin
- Positioning Roth assets for tax-free withdrawals in high-expense years
- Minimizing IRMAA surcharges through multi-year tax planning
According to Fidelity's 2025 Retiree Health Care Cost Estimate, a 65-year-old couple retiring today can expect to spend approximately $315,000 in healthcare costs throughout retirement. Strategic sequencing of benefits and withdrawals could reduce this burden by thousands of dollars annually through subsidy capture and IRMAA avoidance.
Real Numbers: Two Hypothetical Scenarios
Scenario A: Early Claiming Without Planning
Sarah, 62, loses her job with $800,000 in traditional IRA assets. She immediately claims Social Security ($2,200 monthly) and withdraws $40,000 annually from her IRA to supplement. Her MAGI: approximately $66,400. Result: no ACA subsidies, full-price health insurance costing $18,000 annually until Medicare at 65. At 65, her previous high income triggers IRMAA surcharges. Estimated three-year healthcare cost: approximately $54,000.
Scenario B: Strategic OBBBA Sequencing
Sarah delays Social Security to 67 and withdraws $35,000 annually from a combination of Roth and taxable accounts, keeping MAGI around $35,000. She qualifies for ACA subsidies worth approximately $15,000 annually, paying only $3,000 out of pocket for comprehensive coverage. At 65, her lower MAGI avoids IRMAA. At 67, she claims a Social Security benefit that's grown to approximately $2,700 monthly. Estimated three-year healthcare cost: approximately $9,000 (a potential savings of $45,000).
Tax Considerations You Shouldn't Ignore
The interaction between Social Security taxation, Medicare IRMAA, and state income taxes creates a compound effect. In Maryland, where state income tax rates can reach approximately 5.75%, combined with federal rates, the marginal cost of additional income can exceed 40% for middle-income retirees.
Each $1,000 of traditional IRA withdrawal could potentially:
- Reduce ACA subsidies by $200-300 (if under 65)
- Trigger Social Security benefit taxation of $850
- Increase federal and state taxes by $300-400
- Push you into the next IRMAA bracket
This compounding makes Roth conversions during low-income years particularly valuable. Converting $50,000 from a traditional IRA to Roth when your income is low might cost you $10,000 in taxes today but could save you $30,000 or more over two decades through tax-free growth and IRMAA avoidance.
What to Review Before Your Next Birthday
Look at your current trajectory:
- What is your projected MAGI for this year and next?
- When are you planning to claim Social Security, and what's the monthly benefit difference between claiming now versus waiting?
- If you're under 65, could you qualify for ACA subsidies by adjusting withdrawal sources?
- Do you have Roth or taxable account assets to draw from first?
- What will your MAGI be two years before Medicare enrollment (to avoid IRMAA)?
Calculate your break-even:
- Run the numbers on delaying Social Security. At what age does lifetime benefit value exceed early claiming, based on conservative longevity assumptions?
- Model the cost difference between full-price ACA coverage and subsidized coverage if you reduce withdrawals
- Estimate cumulative IRMAA charges over 20 years based on different withdrawal strategies
Consider a multi-year Roth conversion strategy:
- Identify low-income years between now and age 73 when RMDs begin
- Calculate optimal conversion amounts that fill up your current tax bracket without pushing you into the next
- Model how this reduces future RMDs and lifetime tax liability
The OBBBA framework doesn't exist to “game” the system. Its purpose is to understand how federal health and retirement programs interact and making informed decisions about timing. The difference between getting this right and getting it wrong could be tens of thousands of dollars in captured subsidies, avoided surcharges, and reduced lifetime taxes.
If you're within five years of Medicare eligibility, run these numbers now.
Model your income across multiple scenarios. Compare what happens if you claim Social Security at 62 versus 67 versus 70. Calculate whether ACA subsidies are available to you based on different withdrawal strategies. Project your IRMAA exposure based on current and future income levels. The complexity of optimal sequencing for claiming Social Security, starting Medicare, accessing health insurance subsidies, and making retirement account withdrawals means most people benefit from a detailed analysis that accounts for their specific situation. The earlier you map this out, the more options you have to optimize the sequence. These decisions interact in ways that compound over decades, and you typically get one chance to get the timing right.
Our financial professionals at Paladin Advisor Group are here to help. Schedule your complimentary consultation today.
PlanMember Securities Corporation and Paladin Advisor Group are not associated with or endorsed by The Social Security Administration or any other government agency. This information is a general overview of certain rules related to Social Security and the ideas presented are not individualized for your particular situation. This information is based on current law which can be changed at any time.
This content is developed from sources believed to be providing accurate information. It is not intended to provide specific tax, legal and/or investment advice or recommendations for any individual. It is suggested that you consult with your tax, legal and/or financial services professional regarding your individual situation. This material was developed and produced by Paladin Advisor Group to provide information on a topic that may be of interest.
