With subject matter experts focused on your toughest state-tax challenges, we fight so you don’t have to.

DDH is an award-winning multi-state sales tax consulting firm. We know sales tax law, how to interpret it, and how to advocate for our clients. DDH goes above and beyond in navigating challenging sales tax issues to deliver the best results.

DDH’S RESPONSE TO COVID-19

Our service and leadership teams have been closely monitoring the global spread of COVID-19 and have been making proactive adjustments to our operations in order to ensure the continued service and expertise you count on.

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Audit DefenseRefund RecoveryNexus AnalysisOther

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Certifications & Accreditations

Top Services

Audit Defense

We vigorously defend your company’s interests from the beginning of the audit through the appeals process, seeking to mitigate or minimize audit assessments. Our objective is to reduce or eliminate sales tax assessments identified during an audit by applying state tax laws, policies, and statutory exemptions. Click here for more.

Refund Recovery

Sales and use tax is an operating expense that directly impacts profitability. Our refund recovery service analyzes your company’s sales/ use tax reporting process to identify and recover overpayments. Our consultants have recovered millions in overpayments each year on behalf of our clients. Click here for more.

Nexus Analysis

We analyze your company’s sales/use tax risk and exposure associated with future expansions, mergers and acquisitions, and multi-state operations. Additionally, we conduct nexus and taxability studies to help your organization stay in compliance with the numerous state taxing jurisdictions.Click here for more.

Nexus challenges abound in all states. We handle the hard state challenges so you can run your business.

Get in touch with our sales tax team today and start your journey towards business success with DDH Tax.

Why choose DDH Tax?

We offer comprehensive services ranging from sales and use tax training, to our specialty of defending and protecting the interests of businesses during sales tax audits.

Learn more about DDH's perspectives and DDH Tax best practices on the blog.

See the important news, insights and feature blog content from the sales tax experts of DDH Tax, including state-specific tax laws and best practices, events and more.

We're proud of our team

✅ Named Supplier of the Year In 2016 & 2019

✅ Award-Winning Women Leadership

✅ Certified SBA WOSB Woman Owned Small Business

These guys worked with me on a sales tax audit from hell. Their negotiation and business knowledge of the Texas Comptrollers office was the king pin in our success.

Lisa B.

We have a multi-state reach with a unique focus on transaction tax.

Get in touch with our sales tax team today and start your journey towards business success with DDH Tax.