
Contributions made by an eligible individual to an HSA can be deducted from adjusted gross income. The amount paid out of the account, or account balances do not matter.
Contributions are deductible whether or not the eligible individual itemizes deductions*.
*Individuals cannot also deduct the contributions as medical expense deductions under section 213.
Employer contributions to the employee's HSA are treated the same as employer-provided health insurance premiums and are excludable from the employee's gross income.
The employer contributions are not subject to withholding from wages for income tax or subject to the Federal Insurance Contributions Act (FICA), the Federal Unemployment Tax Act (FUTA)