Specialties
One Numerica — Bookkeeping, Payroll & Accounting Services
If you’re a small-business owner, startup, or growing company looking to organize your books, streamline payroll, or clean up your financials, One Numerica is here to help.
We provide reliable bookkeeping, payroll, and accounting services that save you time, ensure accuracy, and help you make confident business decisions. From QuickBooks Online setup and maintenance to full-service payroll and book cleanup, our team makes managing your finances simple and stress-free.
Our Services:
• Bookkeeping & Reporting – Accurate transaction recording, account reconciliation, and clear financial reports for better cash flow and decision-making.
• Payroll Processing – Full-service payroll through Gusto or your preferred platform, including employee setup, tax filings, and compliance with federal and state laws.
• Book Cleanup & Catch-Up – Review and reconcile past records, fix inconsistencies, and organize your books to keep you audit-ready.
At One Numerica, we combine U.S. accounting standards with Filipino excellence to deliver global-quality service with a personal touch. Powered by JCSN Corp, we are your trusted partner for accurate, compliant, and heart-led financial management.
Serving clients in San Diego, CA, and nationwide.
History
Established in 2009.
Founded in 2009 in Manila, Philippines, JCSN Corp began as a collaboration of young professionals in accounting, finance, HR, and IT, united by a vision to deliver world-class bookkeeping and accounting solutions. Over the years, JCSN has built a reputation for accuracy, innovation, and personalized service, supporting professionals and small to medium-sized businesses.
In August 2021, JCSN expanded into the United States and, in 2025, rebranded under the DBA One Numerica, which is wholly owned by JCSN Corp. With roots in excellence and technology-driven systems, One Numerica brings the same trusted expertise and heartfelt service from Manila to San Diego, California, and beyond.
Meet the Business Owner: Jone L.
At One Numerica, our mission is to help business owners find clarity and confidence in their numbers. Jone, a Certified Management Accountant with over 25 years of experience in accounting, tax, and financial consulting, founded the firm to empower entrepreneurs to grow with wisdom and purpose. Blending U.S. standards with Filipino excellence, she leads with integrity, expertise, and a heart for helping businesses thrive.