Monthly donors are a life line of support that can be counted on. Monthly Giving is the most cost effective way to support Centennial's programs and services and an easy way for you to give. Simply decide on your level of support. i.e- $10, $20, $50 or more and selected the date you wish and the amount will be charged to your Visa, MasterCard or Amex. An annual tax receipt will be issued in January for the Total amount given.