SALES TAX YOU CAN TRUST

Sales Tax Audit Support for Online & E-Commerce Sellers
Selling online across multiple states comes with opportunity — but it also comes with sales tax
risk. If you’ve received a letter, notice, or audit request from a U.S. state taxing authority, time
and accuracy matter. Ignoring or mishandling a sales tax notice can quickly turn a manageable
issue into penalties, interest, liens, or enforced collections.
As a CPA firm specializing in e-commerce and online sellers, we provide comprehensive
sales tax audit support and state tax resolution services designed to protect your business,
reduce exposure, and restore peace of mind.

Received a Sales Tax Letter? Here’s Why You Shouldn’t Ignore It
A sales tax notice or audit letter from a state is not a routine formality. In most cases, it signals
that the state believes one or more of the following may apply to your business:

•  Unreported or underreported taxable sales
•  Economic or physical nexus in the state
•  Missing or late sales tax filings
•  Incorrect tax collected or remitted
•  Marketplace vs. direct sales discrepancies
•  Data mismatches from Shopify, Amazon, Stripe, or payment processors

Failing to respond on time can result in:

• Automatic assessments based on estimated sales
• Accrued penalties and daily interest
• Loss of appeal rights
• Account holds or collection enforcement
• Increased scrutiny in future periods

Once deadlines pass, options become more limited — and more expensive. Early, professional
response is critical.

How We Help When the Letter Arrives
When you engage us, you don’t just get advice — you get active representation and hands-
on support.
We step in immediately to:

• Review and interpret the notice or audit request
• Identify what the state is really asking for (often more than what’s written)
• Establish a response strategy based on risk, exposure, and facts
• Communicate with the state on your behalf

Our goal is to control the narrative, reduce unnecessary disclosures, and prevent the audit
from expanding beyond its original scope.

Our Sales Tax Audit Support Services
1. Audit & Notice Review
We analyze the notice, deadlines, periods under review, and authority involved. Many sellers
panic because letters are vague — we clarify exactly what is required and what is not.
2. State Representation: We act as your authorized representative, handling correspondence, follow-ups, and
discussions with state auditors so you don’t have to.
3. Documentation Preparation
We prepare and organize all required documentation, including:

• Sales reports by state
• Tax collected vs. tax due reconciliations
• Marketplace facilitator data
• Exemption certificates (when applicable)
• Filing history and compliance gaps

Everything is presented in a clear, defensible format to minimize questions and delays.
4. Data Reconciliation
We reconcile sales data from platforms such as Shopify, Amazon, WooCommerce, Stripe, and
payment processors to ensure consistency with filed returns.
5. Exposure Analysis & Risk Assessment
If there is potential liability, we quantify it before the state does. Knowing the numbers early
allows us to plan resolution strategies instead of reacting under pressure.
6. Audit Resolution Support
We assist with:

• Responding to findings and assessments
• Negotiating penalties (when possible)
• Structuring payment arrangements
• Closing audits properly to avoid reopening

7. Post-Audit Compliance Planning
Once the audit is resolved, we help you:

• Correct filing and registration gaps
• Establish proper sales tax processes
• Reduce the risk of future audits
• Stay compliant as your business grows

Why E-Commerce Sellers Need Specialized Sales Tax Support
Sales tax for online sellers is complex. Economic nexus rules vary by state, marketplace
facilitator laws differ, and states increasingly use automated data matching to identify sellers.
Generic accounting support is often not enough.
We understand:

• Multi-state nexus thresholds
• Marketplace vs. direct-to-consumer sales
• Platform reporting limitations
• How states initiate and expand audits
• How to respond without oversharing

This specialization allows us to resolve issues efficiently while protecting your business
interests.

Don’t Face a Sales Tax Audit Alone
Sales tax audits are stressful — but they don’t have to be disruptive or damaging. With the right
guidance, most audits can be managed, resolved, and closed without long-term consequences.
If you’ve received a sales tax letter, notice, or audit request from any U.S. state, the best next
step is to act early.

Book Your Free Consultation
Don’t wait until deadlines pass or penalties pile up.
We offer a complimentary consultation to review your notice, explain your options, and outline
the best path forward.
Schedule your free consultation today
Or contact us directly at www.theonlinesellercpa.com
We’ll help you respond correctly, resolve the issue, and protect your business — now and in the
future.