Our Team


Sarah Gastineau
Tax Manager & Director of Firm Development

Sarah A. Gastineau, CPA

Areas of Expertise

  • Business Planning
  • Cryptocurrency
  • Individual Tax
  • International Tax
  • Partnership
  • S-Corporation
  • Tax Representation


  • English

Sarah joined GPW in 2011. She is a California Certified Public Accountant who specializes in general business and individual tax consulting, and client representation in federal and state audits. She provides tax planning and research services in conjunction with tax return preparation.

In addition to her tax expertise, Sarah oversees the firm’s development, which includes talent management as well as management of internal and external publications.

Sarah is a graduate of Surrey University Roehampton, England. She also holds an American Institute of Professional Bookkeepers Certification, and an Accounting Certification, and Finance Certification from UCSD.

Sarah is currently obtaining an MS in taxation from Golden Gate University. Sarah is the Treasurer of the San Diego chapter of CalCPA, Co-Chair of the Active Lifestyle CalCPA group, a Council Representative, and an active member of AICPA. In her spare time she enjoys running, hiking, and being generally active and adventurous.