According to IRS, firms that reimburse workers tax free for health insurance owe a $100 PER DAY excise tax per employee. Many small companies have set up plans to reimburse premiums paid by employees for individual policies or for coverage purchased on an exchange. Unfortunately, the Revenue Service says these arrangements violate the new health reform rules and trigger the excise tax. Right now, the agency hasn’t indicated how strict it will be in levying the penalty. If the premium reimbursement is done on an after-tax basis, that arrangement generally is not subject to the excise tax, in the Service’s view.