How Employer Seed Money Counts Toward Your IRS HSA Limit
A common open-enrollment mistake is contributing the full IRS maximum yourself when your employer also deposits seed money. Under IRC § 223, employer contributions and employee contributions share the same annual statutory ceiling ($4,400 self-only / $8,750 family in 2026, plus $1,000 at age 55+). Excess contributions face a 6% annual IRS excise tax unless removed before the tax filing deadline.
Payroll vs. Direct Contributions: Contributing via your employer's Section 125 cafeteria payroll deduction exempts dollars from 7.65% payroll tax (below the $184,500 Social Security cap) in addition to federal income tax. Direct deposits from a personal bank account still qualify for an above-the-line federal income tax deduction, but do not refund FICA taxes.