With open enrollment season in full swing, more Americans than ever will be able to fund tax-advantaged accounts aimed at health-care costs next year. Embedded in the so-called "big beautiful" bill passed in July are three provisions that expand access to health savings accounts , accounts available to those enrolled in a high-deductible health insurance plan. The changes are likely to attract 3 to 4 million new HSA participants in 2026, according to estimates from Morningstar . Like a flexible