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Who We Are

Iryna Accountancy Corporation is a Certified Public Accounting firm with experience in performing audit, review and compilation engagements as well as nonprofit, corporate, individual, partnership, and fiduciary taxes. 

The firm focuses extensive efforts on and has significant experience in servicing not-for-profit organizations, professionals and closely held businesses. 

The firm has two partners and a full complement of professional and talented staff.

We have been serving Bay Area and beyond for over 15 years.

Iryna Oreshkova, MBA, CPA

Iryna Oreshkova, CPA, holds an MBA degree in Accounting and Finance.

After four years at Deloitte in San Francisco, she joined the faculty at Kaplan University, teaching accounting and tax courses. She also began a private practice specializing in providing tax and accounting services for small businesses and nonprofit organizations.

Iryna is committed to building a one-on-one relationship with clients, providing the attention, commitment and expertise they deserve.

She is a member of AICPA and the California Society of CPAs.

Kosty Oreshkov, EA

Kosty Oreshkov is a tax partner at Iryna Accountancy Corporation and is in our office on a year-round basis to help assist clients with tax and financial matters. As an Enrolled Agent (EA), he can represent taxpayers before the IRS, prepare tax returns, and assist with tax planning.

He has two master's degrees, one in Applied Mathematics and one in Computer Information Systems.

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