15250 Ventura Boulevard Penthouse 1220, Sherman Oaks, CA 91403

Sherman Oaks Accounting & Bookkeeping Powered By One Source Services

At Sherman Oaks Accounting & Bookkeeping powered by One Source Services Inc., our mission is to simplify finances by offering high-quality services including bookkeeping, tax planning, payroll, CFO services, QuickBooks training and support, and other accounting assistance. Our team of QuickBooks Pro Advisors and accounting professionals are passionate about getting things done, solving problems, cultivating results and helping people make informed decisions. Fixed-price contracts are tailored to individual needs and clients know up-front how much their accounting will cost each month; there are no surprises.

Sherman Oaks Accounting & Bookkeeping powered by One Source Services, Inc. is a family-oriented company that has been taking the stress out of accounting since 2015. We believe that every moment is priceless and irreplaceable and that everyone deserves time for fun and adventure (even entrepreneurs). We are here to manage the details so that clients can spend more time doing what is important to them, whether that be growing wealth, traveling, or spending more time with family, We encourage our clients to take a deep breath, exhale the stress of accounting and inhale the freedom to pursue their vision.

Anna Mazisyuk is our creative owner and founder with over 20 years of accounting and management experience. According to Anna, “Accounting is a window into the health of your business. It shouldn’t be a place of confusion and frustration. The time that you spend on accounting should be limited to analyzing complete and understandable data.”  Anna’s career has paralleled the evolution of QuickBooks from Desktop to Online and then Enterprise. She has been using QuickBooks since 1996 and is a certified QuickBooks Pro Advisor. A controller by nature, Anna jumps on every opportunity to organize and streamline operations. She is a planner, problem solver and anxiety-buster who is always learning, evolving and seeking process-improvements. Anna holds a degree in Finance with an emphasis in Accounting and Marketing with honors. Prior to founding One Source Services, she was the private CFO to a successful entrepreneur for 15 years. She has a background in retail and wholesale distribution and e-commerce, credit card processing, and fraud detection and prevention.

Anna assembled a team of professionals at Sherman Oaks Accounting & Bookkeeping powered by One Source Services, Inc. who assist with providing trustworthy, high-quality services. They work together behind-the-scenes to ensure that finances are straightforward and easy to understand. Her motivation comes from seeing the relief and success of her clients as they transition from a land of shoebox receipts and catching-up to a place of clarity and comprehension.