E-Commerce
Navigating the complexities of compliance in the online retail world can be a challenge. Withum’s team of E-Commerce accountants and advisors provides a suite of tax, audit, and advisory services to help your E-Commerce company thrive.
From comprehensive tax planning and compliance solutions and financial statement examination to ERP implementation, risk assessments, and M&A due diligence, we handle the intricacies of your e-commerce accounting and tax compliance needs while you focus on your growth.
Who We Help
- Direct to Consumer (DTC)
- Business to Business (B2B)
- Business to Consumer (B2C)
- Consumer packaged goods (CPG)
- Retail
- Enablement technologies (SaaS)
- Pre and Post purchase tech
E-Commerce Challenges and Trends
For e‑commerce businesses operating in 2026, tariff volatility and shifting trade policies are directly squeezing margins and disrupting supply chains. The global trade landscape has shifted dramatically and online retailers are caught in the crosswinds. Withum’s Global Transfer Pricing Team helps multinational e-commerce companies reduce tariff exposure through customs duty planning, supply chain restructuring, transfer pricing optimization, and scenario-based financial modeling.
Withum offers a tariff impact assessment help you create an actionable plan to drive decision-making using our proprietary scenario modeling tool and step plan.
Schedule a 30-minute tariff impact assessment today.
AI powered e-commerce is already driving results for the most competitive brands. From personalized product recommendations and predictive inventory management to AI-driven content automation, artificial intelligence is reshaping how online retailers operate and grow. E-commerce companies that adopt AI tools are reporting measurable gains in conversion rates, and operational efficiency. Whether through machine learning analytics, conversational commerce, or automated merchandising, AI enables brands to build stronger customer relationships while reducing costs.
AI at the Checkout: How ChatGPT Instant Checkout Is Reshaping Shopping and Payments – Withum
E-commerce sales tax compliance is one of the most complex and fast-changing obligations facing online retailers today. Evolving state and local tax (SALT) laws, economic nexus rules, and multi-state filing requirements create significant risk for brands that don’t stay current. Withum’s SALT specialists work proactively with e-commerce companies to keep you up-to-date on the constant state of change, helping you identify tax savings opportunities, minimize audit exposure, and maintain compliance across all jurisdictions.
Explore our State and Local Tax services
As e-commerce businesses scale, financial transparency becomes essential for long-term growth and investor confidence. Whether you’re preparing for an external audit, a strategic acquisition, or an IPO, having the right accounting infrastructure in place is critical. E-commerce companies that build financial discipline early are better positioned to attract investment, pass due diligence, and navigate complex transactions successfully. Withum’s e-commerce accountants help leadership teams move beyond reactive reporting and toward proactive, strategic financial management.
Prepare your Ecommerce Brand for a Financial Audit
E-Commerce Accounting, Tax and Advisory Services
Accounting and Attestation
- Audited Financial Statements
- Tax provision preparation support
- ASC 606 implementation consultations including Gross vs. Net Analysis
- ASC 842 implementation consultations
- Inventory management consultation
- Navigating the cap table (i.e. Carta) and stock-based compensation reporting (ASC 718)
- Complex debt and equity accounting (warrants, SAFE notes, Secondaries, etc.)
Advisory
- M&A advisory including buy-and sell-side due diligence
- CFO Consulting and support services
- ERP implementation
- SOC 1/SOC 2/SSAE 18 Consulting and compliance
- Cybersecurity assessments
- Network penetration testing
- IT managed services
Tax
- Tax Preparation Services
- International Structuring and Tax Planning
- E-Commerce Sales Tax Nexus
- Transfer pricing analysis
- R&D credits and state incentives
The E-Suite Interviews: Quick Insights from E-Commerce Leaders
Fast takes from the builders transforming e-commerce. Hosted by Lonnie Bloom, these shorts feature insights and stories from the leaders shaping the future of e-commerce. Featured guests include Jason Berwanger of HubiFi, and Eric Bellomo of Pitchbook. Don’t miss the next drop - watch and subscribe on YouTube!
Client Testimonials
Withum has supported me and my team on US taxes, certain technical accounting topics, and they were our auditors for over 4 years. They are incredibly reliable and clearly experts in their respective fields. My Company was acquired in the last year and Withum was one of our go-to partners throughout that process and did a great job. They've truly been a fantastic partner for me and my team.
The Withum team has provided a wide variety of services to us ranging from sales tax, income tax, transfer pricing, tax advisory and audit. They keep us up-to-date with all the latest developments in accounting and tax and have become our go-to advisor for any business matters. Their team is great to work with and has always gone above and beyond to deliver impeccable services. Withum has become our trusted advisor and business partner and we highly recommend their services.
The Withum team has been a trusted tax advisor for us since Day 1 when we were in the early stages of growing our business. As we've grown and matured as an e-commerce company and also added employees in different regions, we have the confidence we can always call on the Withum team for tax guidance when it comes to any topic - whether it relates to our business needs or our employees. Withum has been a fantastic partner even as our tax issues have grown in complexity. No matter the topic, Withum has a broad set of subject matter experts to call on.
The Withum team has provided several services to us such as auditing, income tax preparation and sales tax, just to name a few. They’re very knowledgeable and the team is great. They’ve always explained everything in great details, advised us on next steps and kept us informed on future development and compliance related items. Looking forward to continuing working with the Withum team!
Contact Us
Get expert e-commerce accounting and tax advisory from a team that knows online retail inside and out.
Featured Insights
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Launching an e-commerce brand is an exciting leap. You are developing products, building your online presence, and bringing your vision to life. In the middle of that momentum, sales tax […]
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How to Prepare Your E-Commerce Brand for a Financial Audit
As e-commerce businesses scale, financial transparency becomes essential. Whether you’re preparing for an external audit, a strategic acquisition, or an IPO, having the right financial infrastructure in place is critical. […]
