Similar to overpayment refunds, add a different message to the stub of recalc refund checks:

You are receiving this refund because the Collin County Central Appraisal District made a change to the taxable value of the property. The most common reason for a valuation change is having an exemption granted (such as Homestead, Disabled, Over 65, or Disabled Veteran). If you have any questions about this, please call the number below.

Collin County Tax Office Call Center

972-547-5020