Money What’s an FSA, HSA, 529? How they work and how to use them to cut taxes, build wealth. February 14, 2023 Medora Lee, USA TODAY Comments Off on What’s an FSA, HSA, 529? How they work and how to use them to cut taxes, build wealth. FSAs, HSAs and 529s: How these savings plans can help cut your tax bill, pay health and education expenses, and maybe even grow your wealth.