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Olga Ovnanyan

Accounting Services

We take care of your books for you, so you can get back to running your business.  READ MORE >

Tax Services

Federal and state income taxes for businesses, individuals, estates and trusts.  READ MORE >

Representation Before IRS

Let us help you resolve your tax problems & end the misery the IRS can put you through.  READ MORE >

With over 29 years of experience, we can help you with all your accounting needs. We are a full-service accounting firm offering a broad range of services for businesses and individuals. Our motto is professionalism, responsiveness and quality.


By combining our expertise, experience and the energy of our staff, each client receives close personal and professional attention. We provide outstanding service to our clients because of our attention to details.


Our firm is responsive. Clients who choose our firm rely on competent advice and fast, accurate service. We provide tax and accounting services to individuals, small and mid-sized businesses and other agencies.


An accounting firm is known for the quality of its service. Our firm's reputation reflects the high standards we demand of ourselves. Our primary goal as a trusted advisor is to be available to provide insightful advice to enable our clients to make informed financial decisions. We do not accept anything less from ourselves and this is what we deliver to you. We will answer all of your questions, as they impact both your tax and financial situations. We welcome you to contact us anytime.

JSB Group principal Olga Ovnanyan is a Northbrook accountant with over 29 years of experience serving businesses and individuals. Contact Olga today to learn more about how the JSB Group can assist you.

What's New

Corporate Transparency Act (CTA)
New for 2024: All Business Owners Are Required to Comply with the Corporate Transparency Act. READ MORE >

2024 Tax Planning
Planning is the key to successfully and legally reducing your tax liability. We go beyond tax compliance and proactively recommend tax-saving strategies to maximize your after-tax income. READ MORE >