COOP Accounting Services
Book Consultation
COOP Tax & Accounting, LLP
Licensed CPA Firm
Your Partners inFinancial Precision.
Tax, accounting, and planning for individuals, families, and growing businesses, from a bilingual CPA firm in the United States. We handle this year's filings with next year's decisions in mind.
California CPA Firm · Firm license # 8420 · English & Mandarin · San Jose office
Tax Planning
Tax Preparation
Bookkeeping
Payroll Management
Tax Strategy
Company Formation
Registered Agent — 50 States
Federal EIN Application
Tax Audit Representation
Estate Planning
Cross-Border Advisory
Cross-Border Audit & Assurance
Tax Planning
Tax Preparation
Bookkeeping
Payroll Management
Tax Strategy
Company Formation
Registered Agent — 50 States
Federal EIN Application
Tax Audit Representation
Estate Planning
Cross-Border Advisory
Cross-Border Audit & Assurance
Cross-Border Families Coordinate your U.S. tax return with overseas accounts, investments, property, and family transfers—with clear guidance throughout the year.
Explore services → Foreign-Owned U.S. Businesses For overseas-owned companies with U.S. operations: formation, bookkeeping, payroll, federal and state filings including Form 5472, and reporting to the parent company in English or Chinese.
Explore services → Private Clients Individual and family tax returns and year-round planning, including reporting for RSUs, stock options, and ESPP.
Explore services → How we work Tell us about your situation. Start with a free 30-minute introductory consultation about your needs and timing.Agree on the scope. We explain the proposed work, information needed, and fees before the engagement begins.Move forward with a clear plan. We organize the agreed work, responsibilities, and next steps for ongoing support.Detailed tax analysis, document review, and prior-year work are scoped separately where needed.
What We Do
Comprehensive FinancialServices
Tax, accounting, and advisory services for individuals, families, and businesses with U.S. and cross-border needs.
Tax Preparation
Accurate, timely, and compliant filing. Precision in every detail helps you meet your filing requirements on time.
Tax Planning & Strategy
Strategic foresight to minimize liabilities and maximize growth potential for corporate and personal portfolios.
Bookkeeping
Real-time records that transform data into intelligence. Crystal-clear visibility into your financial health.
Payroll Management
Payroll processing and filing support, with clear schedules and review procedures.
Company Formation & Registered Agent
Nationwide business formation across all 50 states, federal EIN applications, annual compliance, and Registered Agent services.
Tax Audit Representation
Licensed CPAs and Enrolled Agents representing you directly before the IRS and state tax authorities during an audit.
Audit, Review & Compilation
Financial statement audit, review, and compilation support for businesses, lenders, investors, and regulatory needs.
U.S.–China Cross-Border Advisory
Consulting for foreign-owned U.S. companies, cross-border operations, transfer documentation, and bilingual accounting coordination.
Fractional CFO & Business Advisory
Budgeting, forecasting, KPI dashboards, cash-flow planning, and management reporting for growing businesses.
Sales Tax & Multi-State Compliance
State registrations, sales tax filing, nexus review, annual reports, and compliance monitoring across jurisdictions.
Who We Are
Operating at thePrecision
At COOP Tax & Accounting, LLP, our team of licensed California professionals—CPAs and Enrolled Agents—are dedicated to understanding your unique ambitions.
We operate at the intersection of complex US compliance and forward-looking financial architecture, acting as trusted advisors to growing businesses and families with assets and ties across borders.
Licensed CPAs
Enrolled Agents
California Based
Our Story →
"True financial partnership aligns rigorous technical precision with visionary ambition."
Tax News
Tax updates, without the noise. A concise view of important IRS and California developments, updated through our Resources page.
Get Started
Ready to Transform YourFinancial Operations?
Book a free, 30-minute discovery call. No pressure, no jargon. Just a clear conversation about your needs.
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Specialized Expertise
Explore focused cross-border and local CPA services.
