The IRS posts FAQs to explain when costs can and cannot be reimbursed through health plans (https://www.irs.gov/individuals/frequently-asked-questions-about-medical-expenses-related-to-nutrition-wellness-and-general-health). For 2023, participants may contribute up to an annual maximum of $3,050, up from $2,850 for 2022. In addition, the maximum carryover limit from 2022 to 2023 is $570.
The following cost of the following can be reimbursed under a health savings account (HSA), health flexible spending account (FSA), Archer medical savings account (Archer MSA), or health reimbursement arrangement (HRA), subject to any stipulation noted:
Shifting income to a later year, such as where you defer taxable interest to the following year by purchasing a T-bill or savings certificate maturing after the end of the current year. Investments in qualified retirement plans provide tax deferral.