When Estate Planning Becomes More Important
This article is part of our Estate & Legacy Planning resource center, where we cover beneficiary coordination, trust planning considerations, and preserving wealth across generations.
By Nino Lekarczyk | WealthRidge Investments
Published: July 4th, 2026
Key Takeaways
- Medicare premiums are tied to income, not just age
- Higher income can increase premiums through IRMAA adjustments
- Income decisions can affect healthcare costs years later
- Coordinating withdrawals and income sources can improve outcomes
Many people assume Medicare premiums are fixed—but a better question is:
“How does my income actually affect what I pay for Medicare over time?”
Medicare is often viewed as a standard benefit that becomes available at a certain age. But what many people don’t realize is that what you pay for coverage is not fixed—it adjusts based on your income.
This means financial decisions—especially around withdrawals, taxes, and investment income—can directly influence healthcare costs over time.
Understanding how taxes change after you stop working is often the first step in seeing how these pieces connect.
How Medicare Premiums Are Calculated
Medicare Part B and Part D premiums are determined using your income from prior years.
This creates a lag effect—meaning your current premiums may reflect financial decisions made one or two years earlier. Because of this, planning is not just about what you do today, but how those decisions impact future income.
Income for Medicare purposes includes more than just wages. It can also include withdrawals from retirement accounts, investment income, and other sources.
This is why Medicare planning is closely tied to broader tax strategy rather than treated as a separate issue.
What Is IRMAA and Why It Matters
Income-Related Monthly Adjustment Amount (IRMAA) is the mechanism that increases Medicare premiums when income exceeds certain thresholds.
Rather than increasing gradually, premiums rise in tiers. As income crosses specific levels, premiums can increase in noticeable steps.
This structure means that relatively small changes in income can sometimes lead to disproportionately higher costs.
Because of this, understanding where your income falls—and how close it is to certain thresholds—can be an important part of planning.
Why Income Planning Matters More in Retirement
After you stop working, income becomes more flexible—but also more complex.
Instead of receiving a consistent paycheck, income may come from multiple sources, each with its own tax treatment. These sources can interact in ways that influence both taxes and Medicare premiums.
This is a key part of how retirement income actually works.
Without coordination, it’s possible for income to increase in ways that were not intended—especially when drawing from multiple accounts.
How Financial Decisions Can Affect Medicare Premiums
Certain financial decisions can have a direct impact on Medicare premiums, even if they are made for valid long-term reasons.
For example, increasing income in a single year—whether through withdrawals, investment gains, or strategic moves—can influence future premium levels due to how Medicare evaluates income over time.
This doesn’t mean these decisions should be avoided. Rather, it highlights the importance of understanding how they fit into a broader strategy.
This is particularly relevant when evaluating when Roth conversions make sense.
Why Timing Plays a Critical Role
Because Medicare premiums are based on prior income, timing becomes one of the most important variables.
A decision made today may not affect premiums immediately, but can have an impact in the years that follow. This creates a planning dynamic where decisions need to be evaluated across multiple years—not just in isolation.
Coordinating the timing of income can help reduce unintended increases in both taxes and healthcare costs.
How Account Types Influence Medicare Costs
Different account types contribute to income in different ways, which means they can affect Medicare premiums differently over time.
For example, withdrawals from tax-deferred accounts typically increase taxable income, while other account types may provide more flexibility in how income is recognized.
Understanding how account types are taxed over time helps explain how these differences can influence both taxes and Medicare costs.
The Bigger Picture: Taxes and Healthcare Are Connected
Medicare premiums are not separate from your financial plan—they are directly tied to it.
Income decisions affect taxes, and taxes influence income levels. Together, these factors determine not only how much you keep, but also what you pay for healthcare.
This becomes especially important when evaluating how to reduce taxes on investments.
How Medicare Fits Into Your Long-Term Plan
Healthcare is one of the largest and most uncertain costs in retirement.
Because Medicare premiums are tied to income, they become part of the broader planning process—not a separate decision.
This is particularly important when evaluating how long your retirement savings will last.
Evaluate Your Medicare & Income Strategy
Decisions around income, withdrawals, and taxes don’t just affect what you keep—they can also influence what you pay for healthcare over time.
At WealthRidge Investments, we help individuals evaluate how income decisions impact both taxes and Medicare costs—so strategies are coordinated and aligned over time.
If you’re approaching retirement or already managing income from multiple sources, a structured review can help identify opportunities to improve efficiency and avoid unintended costs.
WealthRidge Investments serves clients throughout Illinois—including Burr Ridge, Oak Brook, Hinsdale, and surrounding communities—and works with clients nationwide through virtual planning.
About the Author
Nino Lekarczyk
Founder & Financial Advisor
WealthRidge Investments
With nearly a decade of experience guiding thousands of clients, Nino brings the perspective of large-firm investing combined with the personalized focus of an independent advisor.
- Fidelity Investments — advised on $1B+ in client assets
- JPMorgan — built a $100M advisory practice
- Experience guiding thousands of client relationships
Today, he applies that experience through a client-first approach focused on retirement planning, tax-aware investment strategy, and long-term financial clarity.
Frequently Asked Questions
How far back does Medicare look when determining premiums?
Medicare typically uses income from prior years, which means current premiums may reflect financial decisions made earlier.
Can a one-time increase in income affect my Medicare premiums?
Yes. A single year with higher income can impact premiums in future years, depending on how that income is reported.
Do all types of income affect Medicare premiums the same way?
No. Different income sources are treated differently, but many forms of income—including withdrawals and investment gains—can contribute to the calculation.
Why is Medicare planning connected to tax planning?
Because the same income that affects your taxes is often used to determine Medicare premiums. Coordinating both together is key to improving overall outcomes.
Is there a way to manage or reduce Medicare premium increases?
In many cases, yes. Coordinating income sources and timing financial decisions can help manage income levels over time and potentially reduce the likelihood of crossing thresholds.
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