Medicare Cost by Age: A Projection Calculator for 2026 and Beyond
Use this guide to understand the assumptions, inputs, results, and next steps behind the calculator.
Estimating healthcare costs is one of the most challenging parts of retirement planning. While many pre-retirees know about the standard Medicare Part B premium—projected to be around $185 per month in 2026—this figure is merely the starting point. Your actual costs can be significantly higher depending on your income, health status, and the type of supplemental coverage you choose.
This calculator is designed for those approaching Medicare eligibility (typically age 65) who need a realistic projection of their total costs. It goes beyond the basic premium to estimate your expenses for Parts A, B, and D, accounts for potential income-related surcharges (IRMAA), and models the financial difference between Medigap and Medicare Advantage plans. Use it to create a more accurate retirement budget and understand how much to set aside from your savings, such as a Health Savings Account (HSA), for future medical needs.
Medicare Costs in 2026: What to Expect
Before you can estimate your personal costs, it's important to understand the standard components of Medicare. These are the foundational numbers that apply to most new enrollees. Higher-income retirees will pay more, as detailed in the IRMAA section below.
Here are the projected baseline costs for 2026.
| Medicare Component | Projected 2026 Amount | Who It Affects |
|---|---|---|
| Part A (Hospital) Premium | $0/month | Most people who have worked and paid Medicare taxes for at least 10 years (40 quarters). |
| Part A (Hospital) Premium | Up to $525/month | Individuals who do not qualify for premium-free Part A. |
| Part A Deductible | ~$1,712 per benefit period | Enrollees admitted to a hospital. This is not an annual deductible. |
| Part B (Medical) Standard Premium | ~$185.00/month | All enrollees. This is the base premium before any income-related adjustments. |
| Part B Deductible | ~$252/year | All enrollees. You must pay this amount for covered services before Part B begins to pay. |
| Part D (Drug Plan) Average Premium | ~$35 - $55/month | Enrollees who choose a standalone Part D plan. Premiums vary widely by plan. |
These figures represent the core costs of Original Medicare. However, they don't cover everything. To fill the gaps, most retirees purchase additional insurance. If you plan to retire before 65, you'll need a different strategy to cover your expenses until you're eligible, which you can model with our health insurance bridge calculator.
Medigap vs. Medicare Advantage: A Cost Comparison
Original Medicare (Parts A and B) has significant gaps in coverage, including deductibles and a 20% coinsurance for most Part B services with no annual cap. To manage this financial risk, nearly all retirees choose one of two paths:
- Original Medicare + Medigap + Part D: You keep Original Medicare and add a Medicare Supplement (Medigap) policy to cover deductibles and coinsurance, plus a separate Part D plan for prescription drugs.
- Medicare Advantage (Part C): You enroll in a private, all-in-one plan that replaces Original Medicare. These plans bundle Parts A, B, and usually D, and often include extra benefits like dental and vision.
Their cost structures are fundamentally different, impacting how much you pay and the predictability of your expenses. This choice can affect your safe withdrawal rate by creating either fixed or variable annual costs.
| Cost Factor | Original Medicare with Medigap Plan G | Medicare Advantage (Part C) Plan |
|---|---|---|
| Monthly Premiums | Higher. You pay three separate premiums: Part B, Part D, and the Medigap plan. Total can be $300-$500+/month. | Lower. You pay your Part B premium plus the (often $0) Medicare Advantage plan premium. Total can be $185-$250/month. |
| Predictability | Very high. After premiums and the annual Part B deductible, your medical costs are nearly 100% covered for Medicare-approved services. | Lower. You pay copays, coinsurance, and deductibles for services as you use them, up to an annual out-of-pocket maximum. |
| Out-of-Pocket Max | None on Original Medicare, but Medigap covers most costs, effectively creating a very low cap. | Yes. Plans have a legally mandated annual out-of-pocket maximum (e.g., ~$8,850 in-network for 2024). |
| Annual Cost Scenario (Healthy Year) | Higher due to premiums. | Lower due to low/no premiums and minimal service use. |
| Annual Cost Scenario (High-Need Year) | Remains stable and predictable. | Can reach the out-of-pocket maximum, costing thousands more than the Medigap path. |
| Network Flexibility | High. You can see any doctor in the U.S. that accepts Medicare. No referrals needed. | Lower. Most plans are HMOs or PPOs, requiring you to use a network of doctors. Referrals may be needed. |
Bottom Line: Medigap offers budget certainty with higher fixed premiums. Medicare Advantage offers lower initial costs but with the potential for higher, less predictable out-of-pocket spending if you need significant medical care.
How Your Health Status Impacts Out-of-Pocket Costs
Your premiums are determined by your plan choice and income, but your out-of-pocket (OOP) spending is driven by your health. This is the most unpredictable part of the healthcare cost equation in retirement.
This calculator uses a multiplier based on your self-reported health status to estimate your annual OOP costs for things like copays, coinsurance, and deductibles.
- Good Health: Assumes you use fewer medical services than average. Your OOP costs will be minimal, primarily consisting of the Part B deductible (with Medigap) or occasional copays for doctor visits (with Medicare Advantage).
- Average Health: Represents a typical retiree who sees specialists periodically and manages one or two common conditions. OOP costs are moderate and a key part of the annual budget.
- Poor Health: Assumes management of multiple chronic conditions, a significant health event, or frequent need for specialist care. OOP costs can be substantial, making the choice between a Medigap plan's predictability and a Medicare Advantage plan's OOP maximum critically important.
A large retirement nest egg or a dedicated long-term care fund can provide a buffer for these variable expenses. Planning for higher OOP costs is a crucial part of determining how long your money will last in retirement.
The Math Behind Your Medicare Cost Projection
The calculator uses several formulas to project your total Medicare costs from your enrollment age through your life expectancy. Here are the core calculations for your first year of enrollment.
The first step is to calculate your total monthly premium by adding all its components.
Total Monthly Premium = (Part B Premium + Part B IRMAA) + (Part D Premium + Part D IRMAA) + Part A Premium + Supplemental Premium
Where:
- Part B/D Premium = The standard monthly premium for the projected enrollment year.
- Part B/D IRMAA = The income-related surcharge based on your MAGI from two years prior. This is $0 if your income is below the first threshold.
- Part A Premium = The monthly premium for hospital insurance, which is $0 for most people.
- Supplemental Premium = The estimated monthly premium for your chosen Medigap or Medicare Advantage plan.
Next, the calculator estimates your annual out-of-pocket costs based on your health.
Estimated Annual OOP = Base OOP Cost x Health Status Multiplier
- Base OOP Cost = An estimate of average annual out-of-pocket spending for a typical retiree under your chosen plan (Medigap or Medicare Advantage).
- Health Status Multiplier = A factor that adjusts the base cost up or down (e.g., 0.75 for good health, 1.5 for poor health).
Finally, these are combined to find your total estimated annual cost for the first year. This is a critical input for your retirement withdrawal calculator.
Total Annual Cost = (Total Monthly Premium x 12) + Estimated Annual OOP
To project your lifetime costs, the calculator increases this total annual cost each year by the "Medicare Cost Growth Rate" and sums the results for every year from your start age to your life expectancy.
Frequently Asked Questions About Medicare Costs
What is IRMAA and how does it work?
IRMAA, the Income-Related Monthly Adjustment Amount, is a surcharge that high-income beneficiaries pay in addition to their standard Medicare Part B and Part D premiums. The Social Security Administration determines if you owe IRMAA based on your Modified Adjusted Gross Income (MAGI) from two years ago.
Can I get Medicare before age 65?
Generally, no. Medicare eligibility begins at age 65 for most Americans. The main exceptions are for individuals who have been receiving Social Security Disability Insurance (SSDI) for at least 24 months or those with End-Stage Renal Disease (ESRD) or Amyotrophic Lateral Sclerosis (ALS). Those pursuing a FIRE (Financial Independence, Retire Early) strategy must plan for private health insurance until they turn 65.
Is it cheaper to have Medigap or Medicare Advantage in retirement?
It depends on your health and risk tolerance. Medicare Advantage plans typically have lower monthly premiums, making them cheaper in years when you are healthy. Medigap plans have higher, more predictable monthly premiums but cover nearly all out-of-pocket costs, making them potentially cheaper in years when you require extensive medical care.
What is the penalty for enrolling late in Medicare Part B or D?
If you don't sign up for Part B or Part D when you're first eligible and don't have other qualifying coverage (like from an employer), you may face a life-long late enrollment penalty. The Part B penalty is 10% of the standard premium for each full 12-month period you could have had it but didn't. The Part D penalty is 1% of the national base beneficiary premium for each month you were late.
How does a large Roth conversion affect my Medicare premiums?
A large Roth conversion increases your Modified Adjusted Gross Income (MAGI). Because Medicare premiums are based on your MAGI from two years prior, a conversion in 2024 could trigger a significant IRMAA surcharge for your premiums in 2026. It's crucial to coordinate your conversion strategy with your Medicare enrollment timeline.
Do I need to pay for Medicare Part A?
Most people receive Part A premium-free. You qualify if you or your spouse worked and paid Medicare taxes for at least 10 years (40 quarters). If you don't meet this requirement, you can buy into Part A, but the monthly premium can be substantial.
How are future Medicare costs projected to grow?
Historically, Medicare costs have grown faster than the rate of general inflation. This calculator uses a separate "Medicare Cost Growth Rate" (defaulting to 5%) to project how premiums and out-of-pocket expenses will increase throughout your retirement, providing a more realistic long-term estimate than using a standard inflation rate. For context, you can see average retirement savings by age to see if you are on track.
Next Steps for Your Retirement Healthcare Plan
After using this calculator, you have a personalized estimate of one of your largest retirement expenses. Use this data to refine your overall financial plan.
See how these costs fit into your complete financial picture with the Retirement Healthcare Cost Calculator. Consider strategies to cover these costs, such as maximizing your Health Savings Account (HSA), and explore options for future needs with the Long-Term Care Insurance Calculator.
Last updated: July 2026