Amanda De Koning, QuickBooks Online Certified Managing director of AD Bookkeeping San Diego has over twelve years in the bookkeeping industry. San Diego is home for the mother of two young boys. Amanda is an active member of the community where she has operated her own business since 2012. Book keeping is AD Bookkeeping San Diego’s specialty. We handle the accounting while you focus on other aspects of your business even freeing up time for family while we help you thrive. Amanda De Koning Bookkeeping provides a range of bookkeeping services to the Greater San Diego area such as those listed below.