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.

Why do ecommerce businesses need a specialized CPA?

Ecommerce businesses face accounting challenges that physical retailers do not: multi-state sales tax nexus (every state where you exceed economic thresholds requires registration and filing), inventory accounting across warehouses or fulfillment centers, platform fee reconciliation (Amazon, Shopify, Etsy), shipping cost tracking, and returns and refunds accounting. A CPA who understands ecommerce ensures compliance and captures deductions specific to online selling.

What is sales tax nexus and how does it affect my ecommerce business?

After the 2018 Supreme Court Wayfair decision, states can require you to collect sales tax based on economic activity, not just physical presence. If you exceed a state's economic nexus threshold (typically $100,000 in sales or 200 transactions), you must register, collect, and remit sales tax in that state. We review your sales by state, identify where you have nexus, and handle registrations and filings.

Can you integrate my ecommerce platform with QuickBooks?

Yes. We work with Shopify, Amazon Seller Central, Etsy, WooCommerce, BigCommerce, and other platforms. We configure the integration so that sales, fees, refunds, and sales tax flow into QuickBooks accurately, eliminating manual entry and ensuring your books match your platform reports.

How do you handle inventory accounting for ecommerce?

We set up inventory tracking in QuickBooks that matches your actual stock, whether you fulfill from home, a warehouse, or a third-party fulfillment center (FBA). We track cost of goods sold, monitor inventory shrinkage, and reconcile physical counts with book inventory. Proper inventory accounting ensures your tax return accurately reflects your COGS and ending inventory.

What ecommerce-specific tax deductions should I be capturing?

Common ecommerce deductions include platform fees and commissions, payment processing fees (Stripe, PayPal), shipping and postage costs, packaging materials, returns and refunds, home office (if you run the business from home), inventory storage fees (FBA), advertising and marketing costs, and software subscriptions. We ensure every deductible expense is tracked and claimed.

Ecommerce

Ecommerce CPA & Accounting in Wheaton, IL

Ecommerce businesses face a uniquely complex tax and accounting landscape, multi-state sales tax obligations, platform fee reconciliation, inventory across fulfillment centers, and deductions that are specific to online selling. DWK Tax & Accounting provides CPA services to ecommerce businesses across Wheaton and DuPage County, managing sales tax compliance across states, integrating platforms with QuickBooks, and ensuring your tax strategy captures every ecommerce-specific deduction.

What We Handle for Ecommerce

Multi-state sales tax nexus review and registration

Sales tax filing across all required jurisdictions

Ecommerce platform integration (Shopify, Amazon, Etsy)

Inventory accounting and cost-of-goods-sold tracking

Platform fee and payment processing reconciliation

Shipping cost and packaging expense tracking

Returns and refunds accounting

Home office and storage deduction optimization

Ecommerce-specific tax strategy

Business and personal tax preparation

Navigating Multi-State Compliance

The single biggest compliance risk for ecommerce businesses is unfiled sales tax in states where you have economic nexus. Every state has its own threshold, registration process, filing frequency, and tax rate structure. Missing these obligations can result in back-tax assessments and penalties that dwarf the original tax owed.

David Korzeniowski, CPA reviews your sales data by state, identifies every state where you have nexus, handles registrations, and manages filings across all jurisdictions. Combined with platform integration and proper inventory accounting, this gives your ecommerce business a compliant, accurate financial foundation.

Related Services

Sales Tax Services Monthly Bookkeeping Business Tax Preparation Accounting Services QuickBooks Cleanup

Serving DuPage County

CPA in Wheaton, IL CPA Serving Naperville, IL CPA Serving Bloomingdale, IL

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

Common Small Business Tax Mistakes Top Tax Deductions for Small Businesses

Ready to Get Started

Take Control of Your Financial Future

Whether you need strategic tax planning, business advisory, or CFO-level financial leadership, DWK Tax & Accounting is ready to serve as a dedicated financial partner for your business.