Nationwide U.S. Sales Tax Consulting & Audit Defense

Helping U.S. and international businesses navigate audits, nexus, compliance, and voluntary disclosures across all 50 states.

Comprehensive Sales Tax Services Across All 50 States

Managing sales tax doesn’t have to be overwhelming. At SalesTaxDefenseUSA, we provide end-to-end consulting and representation to help U.S. companies and international businesses entering the U.S. market stay compliant and protected.

Experienced representation in state audits, reducing assessments and penalties.

Identify where you’re required to collect and register properly.

Limit exposure and reduce liability before states contact you.

Ongoing support for accurate, on-time filing across multiple states.

Sales Tax Help by State

Sales tax laws vary widely by state — and for foreign companies selling into the U.S., these rules can be especially confusing. Whether your business is based in the U.S. or abroad, our consultants provide nationwide guidance with deep experience in high-audit states such as Florida, Texas, California, New York, and Illinois.

International Businesses Doing Business in the U.S.

Expanding into the U.S. market comes with unique sales tax challenges. Many foreign companies are surprised to learn that state-level rules apply as soon as they cross nexus thresholds. Our team helps international businesses avoid costly mistakes by providing:

Understand where your company has an obligation to collect.

Simplify compliance in states where you have customers.

Protect your business from aggressive state audit positions.

Resolve past liabilities on favorable terms before states discover them.

Whether you are a European retailer shipping into the U.S., a Canadian SaaS provider serving U.S. customers, or an Asian manufacturer with U.S. distributors, we help ensure your U.S. operations are tax-compliant.

Protect and Simplify Your Sales Tax Obligations

Whether you’re facing a sales tax audit, expanding into new states, or trying to get compliant before issues arise, SalesTaxDefenseUSA is here to help. Our nationwide consulting services cover both proactive compliance and audit defense.

Yes. If a foreign business sells to customers in the U.S. and meets nexus thresholds, it must register, collect, and remit sales tax in those states.

Nexus is the legal connection that requires your business to collect sales tax in a state. It can be triggered by physical presence, employees, or even online sales volume.

We represent businesses during audits, negotiate with state authorities, and work to reduce or eliminate assessments and penalties.

Yes. Through Voluntary Disclosure Agreements (VDAs), many states allow businesses to come forward voluntarily, often limiting back taxes and removing penalties.

No. We help both U.S. and international businesses selling into the U.S. market with nexus, registration, compliance, and audit defense.