A Health Savings Account (HSA) is a tax-advantaged account that allows individuals with high-deductible health plans (HDHPs) to save money for medical expenses. Contributions to an HSA are made with pre-tax dollars, reducing taxable income, and the funds can be used to pay for qualified healthcare expenses, including doctor visits, prescriptions, and medical procedures. HSAs also allow for tax-free growth of investments and withdrawals. Unlike Flexible Spending Accounts (FSAs), funds in an HSA roll over from year to year and are owned by the account holder, meaning they are portable if the individual changes employers or health plans.