Based in Northern California, our team provides remote business and financial services to clients nationwide.
We specialize in tailored business and financial solutions for your unique business needs. For more information, please contact us.
-Owner, Hawaii Restaurant
Business Compliance Project
-Partner, Kansas CPA Firm
Tax Season Support
Kristina founded Keystone Numbers in 2025, bringing deep expertise in accounting, finance, tax, and operations from her work at Big Four and boutique CPA firms, as well as in manufacturing and tech startups.
A San Jose native, Kristina was once active in her Vietnamese youth group and now lives in the Sacramento suburbs with her husband and their dog. Outside of work, she enjoys long walks, true crime documentaries, and diving into cozy mystery novels.