Two of the most powerful tax-advantaged accounts available to young workers are the Roth IRA and the Health Savings Account (HSA). Both offer tax-free growth and tax-free withdrawals for qualified purposes. If you can only fund one, which should you choose? And if you can fund both, in what order?

The Roth IRA

A Roth IRA is funded with after-tax dollars. Your money grows tax-free, and qualified withdrawals in retirement — after age 59½ and once the account has been open for five years — are completely tax-free. For young investors in lower tax brackets today, paying tax now to avoid it in retirement is often the mathematically superior choice.

  • 2025 contribution limit: $7,000 ($8,000 if age 50+)
  • Income limits: Contributions phase out for single filers above $150,000 MAGI and married filers above $236,000 MAGI
  • Flexibility: Contributions (not earnings) can be withdrawn at any time without penalty — making it double as an emergency fund of last resort

The HSA

An HSA is available only to individuals enrolled in a qualifying High Deductible Health Plan (HDHP). It offers a triple tax advantage: contributions are tax-deductible, growth is tax-free, and withdrawals for qualified medical expenses are tax-free. Unlike an FSA, unused HSA funds roll over indefinitely.

  • 2025 contribution limit: $4,300 (individual) / $8,550 (family)
  • Stealth retirement account: After age 65, HSA funds can be withdrawn for any purpose (non-medical withdrawals are taxed as ordinary income, like a traditional IRA — but no penalty)
  • Invest the balance: Most HSA providers allow you to invest funds once a cash threshold is met. Invested HSA funds compound just like a retirement account

The Order of Operations

  1. Capture any employer 401(k) match first — it’s an immediate 50–100% return on investment
  2. Max out the HSA if you have an HDHP — the triple tax advantage is unmatched
  3. Max out the Roth IRA
  4. Return to the 401(k) for additional pre-tax savings

For young workers managing both retirement savings and student loans or early family costs, even small consistent contributions to a Roth or HSA compound dramatically over a 30-year horizon. Start with what you can, then increase by 1% per year as income grows.