Donate online or you may also mail a check to c/o HFTP Foundation, 7301 Ranch Road 620 N. Suite 155 – 193 Austin, TX 78726-4537. The HFTP Foundation is a 501 (c)(3) not-for-profit organization. For US Federal Income Tax purposes, donors may be able to deduct their donation(s) as a charitable contribution. For more information, please consult with your tax advisor. Tax ID: 83-2255073