Tex. Hum. Res. Code § 152.0003

The compensation authorized under this chapter for a judge serving on a juvenile board is in addition to all other compensation provided or allowed by law for a judge. Notwithstanding any other law, the combined salary from all state and local sources of a district judge serving on a juvenile board may not exceed an amount that is $5,000 less than the salary provided by the state for a justice of a court of appeals other than the chief justice.