Without a doubt, December is the most significant month for donations and contributions. It may be the holiday spirit or the end of year attitude, but 31% of all annual giving happens in December. Even further, 12% of annual giving happens over the last three days of the calendar year. Even the average amount per donation increases significantly during December. Just based on these figures alone, it’s no wonder many organizations focus so much energy on their end of year or holiday fundraising campaigns.