HDHP + HSA - the triple tax advantage

A high-deductible health plan (HDHP) paired with a Health Savings Account (HSA) is the only account in the U.S. tax code that offers three tax advantages at once:

1. Contributions are tax-deductible. Pre-tax via payroll, or an above-the-line deduction on your return.
2. Growth is tax-free. Invest the HSA just like an IRA. Funds compound inside the account with no drag.
3. Qualified medical withdrawals are tax-free. At any age. No other account does all three.

After age 65 the HSA can be used like a Traditional IRA for any purpose (withdrawals taxed as income), so it doubles as a stealth retirement account. The "superpower" move for young healthy earners: pay for current medical costs out of pocket, keep the receipts, and let the HSA compound for decades. See Personal Finance and the future HSA Deep Dive.

How to evaluate a health plan

Monthly premium is the cheapest, most visible number on the plan page - and the single worst way to compare plans. The right question is total cost across a normal year and across a bad one.

• Premium - monthly cost, regardless of care used.
• Deductible - what you pay before insurance starts sharing.
• Coinsurance - percentage you pay after the deductible (commonly 20%).
• Out-of-pocket maximum (OOP max) - the hard ceiling on what you'll pay in a year.
• Network breadth - does it include the hospitals and specialists you actually use?
• Prescription coverage - the formulary tier for the drugs you take.

Rough formula: total cost = (monthly premium x 12) + expected out-of-pocket in a normal year, with a sanity check that OOP max plus premium fits within your emergency fund if the worst happens.

When an HDHP makes sense

• Generally healthy with low expected medical use.
• Can pay the full deductible out of your emergency fund without stress.
• Want the tax-advantaged HSA for long-term investing.
• No chronic medications or regular specialist care.
• Employer offers an HSA contribution match or seed (free money - take it).

If those describe you, the math usually favors the HDHP by several thousand dollars per year after accounting for the HSA tax savings.

When a PPO or HMO makes sense

• Chronic condition requiring ongoing care (diabetes, asthma, autoimmune).
• Expensive maintenance medications.
• Planning a pregnancy or family with young kids (kids break things - often).
• Regular specialist visits.
• Prefer broad network access without referrals.

In these scenarios, the lower deductible and predictable copays of a PPO typically beat the HDHP even after accounting for the lost HSA tax benefit. Run the math for your household - and re-run it every open enrollment, because plan designs change.

ACA marketplace basics

If you are self-employed, freelancing, or between W-2 jobs, the ACA marketplace is where you shop. Plans are categorized by metal tier (Bronze, Silver, Gold, Platinum) representing how much of total costs the plan covers.

• Where: healthcare.gov or your state's exchange.
• When: open enrollment runs roughly Nov 1 to Jan 15 [VERIFY current dates].
• Special enrollment for life events: job loss, marriage, birth, move, loss of other coverage.
• Subsidies are income-based - if your AGI is modest, premiums can drop dramatically. The calculator on healthcare.gov is accurate to within a few dollars.
• Many marketplace plans are also HSA-eligible. Filter for "HSA-eligible" or "qualified HDHP" during plan selection.

COBRA: usually the wrong answer

When you leave a job, COBRA lets you keep the employer plan for up to 18 months. The catch: you pay the full premium plus a 2% administrative fee - meaning you now see what your employer was actually paying all along.

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