San Diego’s premiere bookkeeper for non-profits. Serving San Diego county since 1978.


MFJ Systems is a small, family-owned business that has been an integral part of the non-profit community in San Diego county since 1978. We are committed to assisting non-profits fulfil their mission statement by guiding them through the specialized process of bookkeeping, and taxation, specific to 501 (c) 3s. If you are interested in our services, please fill in the contact form, or phone us, and we will be in touch with you.


Please contact us with any questions:

Phone: (619) 298-8280
Fax: (619) 298-2320