HSA Triple Tax Advantage & Growth Calculator
Calculate your immediate tax savings, see how investing your HSA transforms it into an ultimate retirement account, and compare your wealth against a standard taxable brokerage account.
HSA Contribution Plan
Free money from employer towards health care.
Leave at $0 to simulate paying medical bills out of pocket and letting 100% of HSA compound.
HSA vs. Taxable Brokerage Head-to-Head
Identical $4,300/yr Invested| Metric | Triple-Tax HSA | Taxable Brokerage | HSA Victory |
|---|---|---|---|
| Upfront Tax Paid on Contributions | $0 | -$37,250 | +$37,250 |
| Dividend & Capital Gains Tax Drag | $0 (0%) | -$46,950 | +$46,950 |
| Net Usable Portfolio After 25 Yrs | $361,840 | $277,640 | +$84,200 |
Milestone Compounding Schedule
7.5% Annual Return| Year | Contributions | Annual Growth | Tax Saved | Ending Balance |
|---|
Complete Guide to the Health Savings Account (HSA)
1. Why the HSA Beats a 401(k) and Roth IRA
Traditional 401(k) contributions are made pre-tax, but withdrawals in retirement are taxed as ordinary income. Roth IRA contributions are made after-tax, though withdrawals are tax-free.
The HSA is the only vehicle in America that gives you both benefits: you get the upfront tax write-off AND tax-free withdrawals, plus exemption from 7.65% FICA taxes when set up through payroll deduction.
2. The "Shoebox" Strategy for Early Retirees
The IRS does not impose any deadline on when you must reimburse yourself for qualified medical expenses incurred after your HSA was established.
By paying out-of-pocket for medical copays, dental, and prescriptions today and saving your receipts digitally in a "shoebox", your HSA funds remain invested in low-cost index funds for 20 to 30 years. You can then withdraw thousands in cash completely tax-free whenever you wish!
3. Eligibility: High Deductible Health Plans (HDHP)
To contribute to an HSA, you must be enrolled in an HSA-eligible High Deductible Health Plan (HDHP):
- 2025/2026 Individual: Minimum deductible $1,650; maximum out-of-pocket $8,300.
- 2025/2026 Family: Minimum deductible $3,300; maximum out-of-pocket $16,600.
- You cannot be covered by other non-HDHP health insurance or enrolled in Medicare.
4. State Tax Caveats: California & New Jersey
48 US states recognize the tax-deductible nature of HSA contributions. However, California and New Jersey do not conform to federal HSA legislation. In CA and NJ, HSA contributions are subject to state income tax, and annual interest/dividends must be reported on state returns.
Frequently Asked Questions
Do HSA funds expire at the end of the year like an FSA?
No! Flexible Spending Accounts (FSAs) have a "use-it-or-lose-it" rule, but HSA balances belong to you forever. Unspent balances roll over year after year and can be invested in mutual funds and ETFs indefinitely.
Can I use HSA funds to pay for Medicare premiums?
Yes. Once you reach age 65, you can use your HSA completely tax-free to pay for Medicare Part B and Part D premiums, as well as Medicare Advantage premiums and long-term care insurance (up to IRS age limits).
What qualified medical expenses are eligible for tax-free HSA withdrawals?
Under IRS Publication 502, eligible expenses include doctor copays, dental care, braces, eye exams, eyeglasses, contact lenses, laser eye surgery, prescription drugs, mental health therapy, chiropractic care, and over-the-counter medications (CARES Act).