One Numerica Powered by: JCSN Corp

1Numerica Solutions Where Accuracy Meets Integrity — Powered by JCSN Corp 1Numerica Solutions is a full-service accounting firm dedicated to helping small and medium-sized businesses thrive through precision-driven financial services. Established in 2020 in California, with roots tracing back to 2009 in the Philippines, 1Numerica brings together over 50 years of combined industry experience. We specialize in outsourced bookkeeping, tax compliance, payroll, and financial reporting, powered by a team of highly vetted professionals and the latest accounting technology. Our dual-market expertise in the U.S. and the Philippines allows us to deliver scalable, cost-effective solutions that align with each client's unique needs. At 1Numerica, we believe that your peace of mind is essential. That’s why we handle the numbers—so you can focus on building and growing your business. We uphold the highest standards of accuracy, efficiency, and integrity in everything we do. Your success is our priority—because when you win, we all win. Core Services • Bookkeeping & Catch-Up Services • Payroll Management • Tax Preparation & Filing • Financial Statement Reporting • Outsourced Accounting Solutions