Tex. Bus. & Com. Code § 604.052
The issuer of a stored value card may impose or collect a periodic fee or other charge that causes the unredeemed balance of the card to decrease over time only if the fee:
Added by Acts 2007, 80th Leg., R.S., Ch. 885 (H.B. 2278), Sec. 2.01, eff. April 1, 2009.