The retention wheel tells you the number of donors who have given at least once during the two 12-month periods that make up the most recent 24 months. 

  • The larger number is donors that gave between 12 and 24 months ago. 
  • The smaller number is donors (out of the larger number above) that gave again within the most recent 12 months.

The retention wheel operates on a rolling 12 and 24 month cycle, thus it compares the two most recent 12-month cycles and changes every day. If a new donor makes a donation today, he or she will not be factored into the retention wheel until one full year from today. Essentially, a year has to pass before a donor can be retained.

Learn more here: Understanding the Donor Retention Wheel.