How the After-Tax Premium Safe Harbor Creates Compliant Structures
Section 104(a)(3) is the legal foundation for tax-free wellness benefits in dual-premium structures. Here's how it applies:
The key to understanding wellness program taxation is the distinction between these two provisions:
| Element | Section 105 (Pre-Tax) | Section 104(a)(3) (After-Tax) |
|---|---|---|
| Who pays premium? | Employer, or employee pre-tax through §125 | Employee with after-tax dollars |
| Benefit exclusion? | Only for medical expense reimbursement (§105(b)) | All benefits for personal injury/sickness |
| Excess benefit rule? | YES — benefits exceeding expenses are taxable | NO — per Rev. Rul. 69-154 |
| Fixed indemnity? | Taxable to extent exceeding actual expenses | Fully excludable |
| Wellness benefits? | Generally taxable (CCA 202323006) | Excludable when premiums paid after-tax |
The IRS challenges wellness benefits from pre-tax funded policies because Section 105(b) limits exclusions to actual medical expense reimbursements. Section 104(a)(3) has no such limitation—benefits are excludable regardless of whether they exceed actual expenses, as long as premiums were paid with after-tax dollars.
To qualify for Section 104(a)(3) exclusion, a wellness policy must meet these requirements:
After-tax dollars are funds that have already been subject to income and payroll taxes. In a payroll context, this means deductions taken from net pay (after taxes are calculated), not deductions that reduce gross pay before tax calculation.
The employer can provide a wage increase to offset the after-tax premium cost, but the premium itself must be paid from funds that were included in the employee's taxable income. The key is that the employee—not the employer—is the payor of the wellness policy premium.
Section 104(a)(3) covers amounts received "through accident or health insurance (or through an arrangement having the effect of accident or health insurance)." This language confirms that fixed indemnity policies and similar arrangements qualify, not just traditional indemnity insurance.
Section 104(a)(3) does NOT apply to:
To support Section 104(a)(3) treatment, maintain documentation showing:
The documentation should make clear that the wellness policy premium is paid with employee funds that have already been subject to taxation—not employer funds or pre-tax salary reduction.
The PTE Gold Book provides detailed implementation guidance for Section 104(a)(3) structures, including payroll coding, documentation templates, and compliance checklists.