What services does DWK Tax & Accounting offer?

DWK Tax & Accounting offers tax preparation and planning, bookkeeping, accounting, business advisory, and outsourced CFO services for individuals and small businesses in Wheaton, IL and DuPage County.

Where is DWK Tax & Accounting located?

DWK Tax & Accounting is based in Wheaton, Illinois, serving clients throughout DuPage County including Naperville, Glen Ellyn, Lisle, Downers Grove, and the greater Chicago suburbs.

Do you work with small businesses?

Yes. DWK Tax & Accounting specializes in serving small business owners, entrepreneurs, and growing companies who need more than basic tax compliance, including strategic advisory and fractional CFO support.

How do I schedule a consultation?

You can schedule a consultation by visiting https://dwkcpa.com/contact, calling (708) 369-0044, or emailing david@dwktaxaccounting.com.

Does DWK Tax & Accounting serve businesses in Oak Brook?

Yes. While based in Wheaton, we serve Oak Brook businesses and professionals throughout the area. Oak Brook is home to many corporate offices, professional service firms, and small businesses that benefit from CPA-level accounting and tax services.

What CPA services do you offer Oak Brook businesses?

We provide corporate and small business tax preparation, monthly bookkeeping, financial reporting, payroll services, business advisory, QuickBooks support, and outsourced CFO services to Oak Brook companies of all sizes.

Can you handle tax preparation for Oak Brook executives and professionals?

Yes. Oak Brook is home to many corporate executives, attorneys, and medical professionals with complex tax situations, stock options, K-1s, investment income, and multi-state filings. David Korzeniowski, CPA handles these returns with the attention they require.

How far is your office from Oak Brook?

DWK Tax & Accounting is based in Wheaton, approximately 20 minutes from Oak Brook. We also work remotely with Oak Brook clients using cloud-based accounting tools, so distance is never a barrier to service.

Do you work with Oak Brook restaurants and retail businesses?

Yes. We provide accounting and tax services to Oak Brook retail and restaurant businesses, including sales tax filing, payroll, inventory accounting, and industry-specific tax strategies.

Oak Brook, Illinois

CPA in Oak Brook, IL

Oak Brook is a hub for corporate headquarters, professional services, and thriving small businesses. DWK Tax & Accounting serves as a trusted tax consultant and CPA for businesses and individuals across Oak Brook, offering corporate-level tax preparation, bookkeeping, and financial advisory without the overhead of a large firm. David Korzeniowski, CPA delivers the expertise Oak Brook professionals expect, with the personal attention of a local practice.

CPA Services for Oak Brook

Corporate and small business tax preparation

Monthly bookkeeping and financial reporting

Executive and professional personal tax preparation

Business advisory and strategic planning

QuickBooks setup, cleanup, and training

Payroll processing and compliance

Outsourced CFO for growing companies

Sales tax filing and compliance

Our Services

Tax Preparation Tax Planning Corporate Tax Preparation Business Tax Preparation Monthly Bookkeeping Fractional CFO Advisory

Corporate Expertise, Local Service

Oak Brook businesses expect a level of sophistication that franchise tax chains cannot deliver. From corporate tax strategy to executive personal returns with stock options and K-1s, DWK brings the depth of experience that Oak Brook's business community demands.

David Korzeniowski, CPA works directly with every client, no handoffs to junior staff, no seasonal preparers. Your financial matters are handled by a licensed CPA who knows your situation and is available year-round.

Schedule a Free Consultation

(708) 369-0044Serving Oak Brook, Illinois

Why Choose DWK

A CPA Partner Who Invests in Your Success

Business owners choose DWK Tax & Accounting because they get direct access to a licensed CPA who understands their industry, their goals, and their numbers, not a revolving door of staff.

Licensed Illinois CPA

David Korzeniowski is a licensed Certified Public Accountant in the State of Illinois, not a seasonal tax preparer or a software dashboard. Every return is prepared and reviewed by a CPA who is accountable for accuracy and compliance.

Small Business Experience

8+ years working with contractors, restaurants, medical practices, law firms, e-commerce, real estate investors, and consultants across DuPage County. Industry-specific knowledge means better deductions and fewer surprises.

Year-Round Support

Tax strategy doesn't stop in April. David is available throughout the year for questions, planning conversations, and proactive adjustments, not just at filing season.

Proactive Tax Strategy

We plan ahead. Entity structure, timing, retirement contributions, and quarterly estimates are reviewed continuously so you keep more of what you earn, legally and strategically.

Personalized Planning

Every business is different. Recommendations are built around your specific circumstances, goals, and growth plans, never a generic template or a one-size-fits-all checklist.

Local & Accessible

Based in Wheaton, serving DuPage County and the western suburbs. You can call, email, or meet in person. No call centers, no overseas outsourcing, no account handoffs.

Meet David Korzeniowski, CPA Read Client Reviews View Success Stories

Frequently Asked Questions

Also serving: Wheaton, Downers Grove, Elmhurst, Hinsdale, Clarendon Hills, and communities throughout DuPage County.