Sec. 213.021.  INTEREST ON PAST DUE CONTRIBUTION.  (a)  An employer who does not pay a contribution on or before the date prescribed by the commission is liable to the state for interest of one and one-half percent of the contribution for each month or portion of a month that the contribution and interest payments are not paid in full.  The total interest applied may not exceed 37-1/2 percent of the amount of contribution due at the due date.
(b)  Liability for interest under Subsection (a) does not apply to an employer who:
(1)  failed to pay a contribution because of the bona fide belief that all or some of its employees were covered under the unemployment insurance law of another state;  and
(2)  paid when due a contribution on all the wages of those employees under that law.
Acts 1993, 73rd Leg., ch. 269, Sec. 1, eff. Sept. 1, 1993.  Amended by Acts 1995, 74th Leg., ch. 76, Sec. 9.38(a), eff. Sept. 1, 1995.