Pre-Medicare Gap Calculator
Retiring before 65? Estimate ACA premiums, subsidies, and total health insurance cost until Medicare kicks in.
The pre-Medicare gap — those years between early retirement and age 65 — is one of the biggest financial hurdles for early retirees. Without employer coverage, you'll need to buy insurance on the ACA marketplace. The good news: ACA subsidies can dramatically reduce costs if your income is moderate. The bad news: managing your MAGI to maximize subsidies while still having enough to live on requires careful planning. This calculator estimates your year-by-year premiums, subsidies, and total cost to bridge the gap.
5 years until Medicare at 65. Total estimated cost: $33,900 (after $2,100 in subsidies). Average: $565/mo.
This is what ACA subsidies are based on
2nd-lowest Silver plan in your area
Pre-Medicare cost summary
Years until Medicare
5
Eligible at age 65
Total net cost
$33,900
After subsidies
Total subsidies
$2,100
6% of gross
Average monthly
$565
Net premium
Year-by-year premium breakdown
| Year | Age | Income | FPL× | Gross | Subsidy | Net |
|---|---|---|---|---|---|---|
| 2026 | 60 | $60,000 | 4.0 | $7,200 | $2,100 | $5,100 |
| 2027 | 61 | $61,200 | 4.1 | $7,200 | $0 | $7,200 |
| 2028 | 62 | $62,424 | 4.2 | $7,200 | $0 | $7,200 |
| 2029 | 63 | $63,672 | 4.2 | $7,200 | $0 | $7,200 |
| 2030 | 64 | $64,946 | 4.3 | $7,200 | $0 | $7,200 |
How to use this calculator
Current age — Your age now. The calculator projects costs from this age until 65 (Medicare eligibility). If you're already 65+, this gap doesn't apply to you.
Annual household income (MAGI) — Modified Adjusted Gross Income — this is what ACA subsidies are based on. It includes wages, dividends, capital gains, Roth conversions, and most retirement distributions. Strategic Roth conversions can increase MAGI and reduce subsidies.
Household size — Number of people on your tax return. Larger households have higher FPL thresholds, meaning more subsidy at the same income.
Monthly gross premium — The full-price cost of the second-lowest Silver plan (SLCSP) in your area before any subsidy. This varies widely by location — check Healthcare.gov for your area. Typical range: $400–$900/month for a single 60-year-old.
Income growth rate — Annual increase in your MAGI. Use 2–3% for inflation adjustments, or 0% if your income is fixed.
Real-world examples
Single retiree, 60, moderate income
$60K income, 1 person, $600/mo Silver plan. FPL ratio: 3.98x → 8.5% cap. Subsidy: ~$4,284/yr. Net cost: ~$2,916/yr ($243/mo). Over 5 years: ~$15K total after subsidies.
Couple, 62, lower income
$45K income, 2 people, $1,200/mo Silver plan. FPL ratio: 2.12x → 4% cap. Subsidy: ~$12,240/yr. Net cost: ~$1,800/yr ($150/mo). Over 3 years: ~$5,400 total. Lower income = much bigger subsidy.
High-income early retiree, 58
$120K income, 1 person, $700/mo Silver plan. FPL ratio: 7.97x → no subsidy cap. Full cost: $8,400/yr. Over 7 years: ~$59K. Consider Roth conversions to shift income to pre-retirement years.
Formula & Methodology
ACA subsidy (Premium Tax Credit)
- Gross Premium = Annual cost of 2nd-lowest Silver plan
- Income = Household MAGI
- Cap% = Max % of income you pay (based on FPL ratio)
The cap percentage increases with income relative to FPL. Below 150% FPL: $0 premium. At 300% FPL: 6% cap. Above 400% FPL: no subsidy cap (pre-ARPA cliff eliminated).
Federal Poverty Level (2024)
FPL is higher in Alaska and Hawaii. This calculator uses contiguous US figures.
Assumptions & limitations
- Uses 2024 FPL and ACA subsidy brackets. These are updated annually by HHS.
- The American Rescue Plan (ARPA) subsidy enhancements are assumed to continue. If they expire, subsidies above 400% FPL disappear.
- Gross premium is assumed constant. In reality, premiums increase with age (age-rating) and medical inflation (~5–7%/yr).
- This estimates Silver plan costs only. Bronze plans are cheaper but have higher deductibles; Gold plans cost more with lower out-of-pocket.
- Does not include deductibles, copays, or out-of-pocket maximums — only premiums.
- MAGI management (Roth conversions, capital gains harvesting) can significantly affect your subsidy eligibility.
Frequently asked questions
What is the ACA subsidy cliff?
Before the American Rescue Plan (2021), subsidies cut off abruptly at 400% FPL (~$60K for a single person). ARPA eliminated this cliff — you now pay no more than 8.5% of income for the benchmark Silver plan regardless of income. If ARPA provisions expire, the cliff returns.
Should I manage my MAGI to get bigger subsidies?
Many early retirees do. Keeping MAGI between 150–300% FPL maximizes subsidies. Strategies include: using Roth contributions (not conversions) for spending, harvesting capital gains up to the 0% bracket, and timing Roth conversions for years when you need less income.
What happens if my income is very low?
Below 138% FPL in Medicaid expansion states, you may qualify for Medicaid instead of ACA. Below 100% FPL in non-expansion states, you fall into a coverage gap — no Medicaid and no ACA subsidy. This is a critical planning consideration.
Can I use COBRA instead?
COBRA typically lasts 18–36 months and costs 102% of the full employer plan premium (no employer contribution). It's usually much more expensive than ACA with subsidies, but may be worth it if you have high medical needs and want to keep your current doctors.
What about health sharing ministries?
Health sharing plans are not insurance and not ACA-compliant. They're cheaper but don't cover pre-existing conditions, have annual/lifetime limits, and don't guarantee payment. They also don't satisfy the individual mandate (though the federal penalty is $0).