Anton Prokopenko, MBA, CPA, CFP®, EA

Financial & Tax Advisor

Meet your advisor

Anton Prokopenko, MBA, CPA, CFP®, EA

MBA · Business strategy
CPA · Tax & accounting
CFP® certification · Financial planning
EA · Enrolled to practice before the IRS

Anton specializes in retirement planning, business tax strategy, and personalized financial advice designed to reduce taxes and support long-term financial goals. Whether you’re a solo entrepreneur, a growing practice, or planning for life after work, he delivers clear, actionable guidance tailored to your situation.

Most advisors specialize in either taxes or investments. Anton holds the credentials and the responsibility for both, which is what lets Sansone coordinate the two sides of your financial life under a single strategy.

“If your CPA and your advisor don’t talk to each other, you’re paying for two opinions that might contradict each other. I’d rather give you one full opinion.”

Anton Prokopenko, MBA, CPA, CFP®, EA

Planning in Barrington
Local focus

Planning for Barrington professionals and soon-to-be retirees.

Barrington sits on the Metra line into Chicago, and many households here have spent a career in a corporate or professional role: a large 401(k), stock options or restricted stock, deferred compensation, maybe a pension. As retirement gets closer, the questions shift from how much to save to how to turn those accounts into income without giving the IRS more than you have to.

Those are tax decisions as much as investment decisions. We look at your tax return and your portfolio together, so the order you draw from accounts, when you claim Social Security, and whether a Roth conversion makes sense are planned as one strategy, not sorted out at tax time. Our Crystal Lake office is a short drive up Northwest Highway, and we also meet virtually.

Tax preparation and tax planning for Barrington households and small businesses are part of the same relationship. We prepare personal and business tax returns, run fall tax projections so there are no surprises in April, and handle S corporation and partnership filings for local owners. See our tax preparation and tax planning services and our planning for business owners.

Service area
Where we work

Serving Barrington and the surrounding communities.

Based in Crystal Lake, working with clients across McHenry County, northern Kane County, and the Barrington area, in person at our Crystal Lake office or virtually.

Common questions
FAQ

Working with a CPA and CFP® professional.

Q.01

Where is your office?

Our office is at 850 S McHenry Ave, Suite D, Crystal Lake, IL 60014, near Crystal Lake South High School, off Randall Road. We meet clients from Barrington and across McHenry County, and offer virtual meetings for those who prefer them.

Q.02

What does “fee-only fiduciary” actually mean?

Fee-only means we’re paid only by our clients, never through commissions on the products we recommend. As a fiduciary, we’re bound to act in your best interest at all times. This structure avoids the conflicts of interest that come with commission-based advice.

Q.03

Do you handle both taxes and investments?

Yes. Anton holds both the CPA license and CFP® certification, so tax planning and wealth management are coordinated under one relationship instead of split between two professionals working separately.

Q.04

Who do you typically work with?

Retirees and pre-retirees with meaningful retirement savings, and small business owners in Barrington and across McHenry County who want their tax strategy and investment plan working together.

Q.05

Do you prepare tax returns for Barrington residents and small businesses?

Yes. We prepare personal tax returns and business tax returns (S corporations, partnerships, and sole proprietors), and we plan ahead with fall tax projections so the April result is not a surprise. Many Barrington clients start with a tax return and add planning or wealth management later.

Q.06

How much does a tax advisor or tax preparation cost in Barrington?

It depends on how involved your tax return is. Business income, rental property, K-1s, more than one state, and stock compensation all add work. Call the office and we will talk through what your situation involves. As an ongoing wealth management client, your Retirement Tax & Income Review and your personal tax return (Form 1040) are included with no separate fee. Business tax returns are billed separately.

Financial advisor + CPA. One firm.

Get a tax-smart opinion before major life changes turn into tax surprises.

Discover what coordinated planning may save you. A free 30-minute conversation, no obligation.

Office hours · Mon–Fri
8:00 AM – 4:30 PM
850 S McHenry Ave, Ste D
Crystal Lake, IL 60014