
California tax and financial planning firm covering tax preparation, corporate tax, payroll and wealth planning

JASS is an outsourcing provider for routine administrative and bookkeeping work at small businesses

JASS provides outsourced business administration and bookkeeping support, covering routine tasks as well as special projects, aimed at letting business owners focus on their clients and core work. Its staff have a combined total of more than 80 years of experience partnering with business owners on administrative support and bookkeeping. The firm says it takes on projects of any size while maintaining confidentiality, cost effectiveness and accuracy, and that it keeps its staff current through ongoing technology use and continuing education courses. Its work spans bookkeeping services, business presentations and client data management, aimed at businesses of micro and small size. A separate services page on the site sets out a fuller description of what JASS offers, and the company positions itself as a way for owners to hand off administrative work while they concentrate on other parts of the business.
Summary written by TrustList from the business's own published information, Sep 2026.
JASS is ranked on 1 TrustList ranking at #45.
Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. JASS has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.
It is one of 3 here listing outsourcing and one of 6 here listing administration.
Its profile: “The firm says it takes on projects of any size while maintaining confidentiality, cost effectiveness and accuracy, and that it keeps its staff current through ongoing technology use and continuing education courses.”
Of the top 91 here, 60 also cover tax and 56 also cover accounting; 5 also work in California and 4 also work in United States.
Behind J.R. Bookkeeping & Accounting Services, ahead of Konnekt.
As of 2026-11-01. Organic ranks only; sponsored placements are never ranks. How TrustList ranks
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