Sales Tax Legal Research and Opinions
Sales tax laws aren’t always so clear-cut. A new product hits the market, the business expands into unfamiliar states, or a deal closes – and suddenly someone needs to understand a tax posture that nobody’s formally assessed. When the answer isn’t obvious, and the stakes are real, guessing isn’t a strategy.
At Davis Davis & Harmon LLC, we provide formal sales tax research and written opinions for businesses that need a documented, defensible answer to a specific sales tax question. Our team works through applicable statutes, administrative rulings, and case history. Then, we put a clear conclusion in writing, giving you sales tax legal guidance you can cite.
That documented answer carries real weight. It supports internal compliance decisions, prepares you for an audit, and settles questions before they compound into something harder to address.
Capabilities
Proven Results
Why You Might Need Professional Research and Opinions
Most clients come to us when a specific question has surfaced, and internal resources can’t fully settle it. Maybe the taxability of a product isn’t obvious. Maybe the business operates in states where the rules conflict, or a new transaction type has come up that doesn’t map cleanly to anything you’ve handled before, or some other sales tax legal edge case.
Sometimes the urgency is higher. An auditor is already asking questions, or a new market is opening, and you need to know (before collecting) whether an exemption actually applies.
A Few Common Reasons
- Multi-state operations where sourcing and sales tax laws conflict
- Unclear taxability for a product or service across one or more states
- Building a defensible position ahead of or during an audit
- Regulatory changes that may affect how current transactions are classified
Hundreds of businesses, many of them repeat sales tax research clients, have brought their toughest questions, many of them sales tax legal questions, to DDH. The firm has been doing this work since 2001, and the team averages 15 to 30 years of experience in the field. Several came from Big 4 firms like Deloitte, EY, PwC, and KPMG; others spent years as state auditors. That combination of backgrounds tends to show up in both the quality of the analysis and the defensibility of what we put in writing.
How We Approach a Legal Research Engagement
- Define the question: We start by scoping the specific issue: what product, which states, what type of transaction. Our sales tax legal research doesn’t wander.
- Research the applicable law: Statutes, administrative code, agency guidance, and relevant case history. We dig into each for every jurisdiction in play.
- Draft the written opinion: Everything we find goes into a plain-language document, cited, contextualized, and concluded clearly.
- Deliver and debrief: You get a defensible document, and we walk you through what it means in practice.
Common Types of Research and Opinions We Handle
- Basic sales tax law navigation and compliance
- Nexus analysis for new or expanding business operations
- Exemption eligibility in specific states or jurisdictions
- Sourcing rule interpretation across multiple states (sales tax legal research)
- Voluntary disclosure program guidance
- Wayfair and economic nexus compliance questions
Sales Tax Research & Opinions – Frequently Asked Questions
How is a written opinion different from looking up the tax code ourselves?
It’s the analysis behind it. We look at how statutes have been interpreted, check for agency rulings or relevant case history, and map your specific facts onto that framework. It’s a documented position, and one built to hold up, not just give you a direction to keep researching.
What do you actually need from us to kick things off?
To begin, we’ll just need a few things:
- A description of the product, service, or transaction at issue (sales tax legal context)
- The states involved, even if you’re not yet sure which ones apply
- Any prior positions taken, existing exemption certificates, or auditor correspondence
Do you handle sales tax research that spans multiple states?
Yes, regularly. Rules vary across jurisdictions – sometimes significantly – and a lot of what we see has a multi-state dimension. We research each state separately, document variation, and pull it into a single consolidated opinion that covers the full sales tax law picture. Multi-state questions are often where analyses have the most practical value.
What if a state later disputes the sales tax legal position we’ve taken?
A formally researched opinion gives you a real footing:
- Shows the question was analyzed seriously in good faith
- Provides a documented basis for contesting incorrect auditor conclusions
- Supports penalty-abatement arguments when a filing position is challenged
Schedule a Call
If there’s a sales tax question your team can’t settle on its own, or any other situation that needs experienced eyes, reach out to DDH. Conversations are easy, and there’s no pressure.
Give us a call at 972-488-5000 or fill out the contact form.