Ecommerce has grown at a substantial rate over the last several years; specifically post-pandemic. With that growth comes new opportunities for business. But, it also comes with increased scrutiny from state tax authorities. In California, that tax authority is the California Department of Tax and Fee Administration (CDTFA), which has stepped up enforcement efforts to ensure online sellers are properly collecting, reporting and remitting sales tax. Many ecommerce businesses assume that selling through marketplaces like Amazon, Etsy and Shopify means their sales tax obligations are fully handled. However, that is not correct and that assumption can lead to audits and significant liabilities in the form of ecommerce audits.

Online marketplaces like Amazon and eBay may sometimes collect tax for some transactions. However, sellers may still have obligations outside the marketplace. Additionally, California has the right to request sales information from entities such as eBay, Etsy, Amazon and other online retailers in order to assess sales tax. This means that Internet retailers – those who may have no other tie to a state but for Internet sales made by people in the state – may be subject to pay sales tax to that state. This was not the case previously.

The CDTFA assesses ecommerce for audit by cross checking marketplace reports, payment processors, federal tax returns, and shipping data. Some of the common sales tax mistakes that trigger CDTFA audits include unreported direct website sales from marketplaces such as Shopify, Amazon and WooCommerce. Oftentimes, the seller assumes the marketplace (e.g., Shopify) is handling the tax obligations. But, the reality is that it’s the seller’s responsibility. Another audit trigger is double reporting or underreporting sales or purchasing inventory tax-free, but then using it for tax purposes. 

The CDTFA has identified risk areas through ecommerce audits. Some of the risks include calculating sales tax incorrectly and then not collecting, and paying, the correct amounts. This can be especially confusing in a state such as California with its complex district tax structure. That is, California has a base rate of sales tax, but some districts may have additional taxes that need to be collected. Other risk areas include improper documentation for exempt transactions, missing sales records, and inconsistent accounting data. 

If the CDTFA decides to audit your ecommerce business, you will receive a notice of audit in the form of an initial contact and information request. They may request documents such as sales reports, marketplace statements, bank statements and merchant processor records. After doing its research and reviewing the documentation, the CDTFA will provide its audit result and, if applicable, its assessment of tax, penalties and interest. Those penalties may include back taxes for multiple years, interest and possibly negligence penalties.

CDTFA audits are becoming more common as the state targets online sellers and as ecommerce sellers face complex sales tax compliance obligations. If you’re a California ecommerce business contracting with marketplace facilitators, it’s important to be proactive and not assume the marketplace is handling your tax liability. Always work with an experienced California tax attorney or professional to help you understand these nuances and what’s best for your business. 

Allison Soares is a partner and tax attorney at Vanst Law LLP. It doesn’t matter the issue: audits, collections, appeals, international disclosures, grumpy people— Allison enjoys fixing problems. In addition to her legal work, she has worked in accounting and utilizes that knowledge to her advantage while handling cases involving EDD audits from San Francisco to San Diego.

Allison Soares

Allison Soares, a renowned tax attorney, excels in representing clients before the IRS, FTB, EDD, and CDTFA. With a Bachelor of Arts in Finance from the University of Wisconsin, Milwaukee, and a transformative teaching stint in Brazil, Allison’s diverse background enriches her legal expertise. She pursued law at St. Thomas University School of Law, Miami, complementing it with an MBA in accounting and forensic accounting. Further honing her skills, she obtained a Master of Laws in Taxation from the University of San Diego School of Law. As an adjunct professor at San Diego State University, Allison imparts her knowledge in tax procedures, practice, and ethics. Her accolades include being named Best of the Bar by the San Diego Business Journal and multiple Super Lawyer recognitions. Committed to community service, she volunteers with Forever Balboa Park and Friends of Balboa Park. Allison’s authoritative contributions in tax law are showcased through her publications and speaking engagements.
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Brandessa Hale
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I can't recommend Allison enough! She helped me successfully navigate a stressful EDD audit with expertise and grace. Not only is she incredibly smart and thorough, but she's also genuinely kind—something you don’t always expect from an attorney. Her support and guidance made all the difference. If you need a tax attorney who knows her stuff and truly cares, she's the one to call!
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Thank you Allison for all of your help and knowledge, and your strong team And referrals. I am beyond grateful. You went above and beyond my expectations.
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Dee Thibodeau
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2024- Working with Allison has been an incredibly smooth experience both times I’ve worked with her. Her expert advice and the support she provides are outstanding, and we’ve had nothing but positive results each time. 2020- I was so impressed with her work during an EDD audit. I would HIGHLY recommend Allison to anyone going through an EDD Audit. From the very first 3 minutes of speaking with her, she was super helpful and professional, while also making me feel like I was talking to a friend, which really helped calm my anxiety. Allison was dedicated to helping us achieve the best possible outcome and was honest about all scenarios, even preparing us for the worst. We ended up with the VERY best outcome because of how she guided us through the process and made sure we had everything ready to tell our story to the auditor. If you want someone who truly listens, understands your business, and will be your biggest advocate, call Allison now! Be ready because she’s quick to respond with both calls and emails.
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Nadine Kunal
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Very thoughtful, concise, and honest advice provided. Would recommend her council to my family.
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Alex L
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We retained the services of Allison Soares for a recent IRS audit. The IRS was claiming we owed an exorbitant amount of money. After interviewing several qualified attorneys, Allison was the obvious choice. During this very stressful time for our family, we appreciated how knowledgeable and responsive she was from the very first call. Her professionalism and commitment to our case was truly impressive. She pointed out a few critical points, that another attorney may have missed, which we believe helped our case immensely. She guided us through this complicated process with great success and we could not have been happier with the outcome of the audit. We are 100% satisfied with her work and would highly recommend her to anyone seeking legal tax advice. Thank you so much Allison, we are truly grateful for all your hard work.
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I called this office to have a tax issue clarified for me. I have never received more candid, honest, and useful information. I would highly recommend Allison Soares.
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Parisa Ansari
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Allison Soares is incredibly knowledgeable, prompt, and helpful. Her detailed expertise in tax matters made my experience exceptional. Highly recommended!
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Allen Wang
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I received an EDD audit letter for my small s-corp business. I feel nervous. Fortunately I found Allison. I talked with her on phone today about my business and my concern, she gave me very solid suggestions and confidence to handle this. She is very honest and I highly recommend her to anyone who has trouble with EDD audit!
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Allison Soares is a great tax attorney. She helped my business navigate an difficult tax situation and I am very happy with the outcome