100 Percent Disabled Veterans Exemption (Tax Code Section 11.131(b)):. The deadline for filing for a disabled veteran's exemption is between January 1 and April 30 of the tax year.You can use Texas Comptroller Form 50135 to apply for the Disabled Veteran's or Survivor's Exemption. Texas offers a partial property tax exemption for partially disabled Veterans. Complete the exemption form. The disabled veteran must be a Texas resident and must choose one property to receive the exemption. You may file for a homestead exemption up to one year after the delinquency date – usually Feb. 1. This video covers how to fill out Texas Residential Homestead Exemption with a focus on Bexar County. Historical Exemption, Section 11.24.