Sales Tax Audit Defense Services
Experts in Tax Law Application, Policy & Exemption
We represent clients during sale/use tax audits, guiding them through the process to deliver the best possible results.
If your business is being audited, it is in your best interest to retain sales tax defense experts in sales/use tax laws for your state. Professionals like our team at DDH will advocate on your behalf and seek to reduce or minimize any tax assessments by applying state tax laws, tax policy, and statutory exemptions. Our sales tax audit defense team looks for every refund opportunity we can find to offset your sales tax assessment.
We vigorously defend our clients’ interests from the beginning of the audit through the appeals process. You can trust us to take good care of you and your business through the end of your audit.
Capabilities
Proven Results
Why You Need Professional Sales Tax Representation
Audits move fast, and the rules aren’t always applied cleanly. We routinely see misapplied nexus rules (especially post-Wayfair), taxable/non-taxable calls made on thin facts, and penalties stacked simply because a timeline slipped.
An early strategy can change the whole trajectory of an audit. When a sales tax audit defense expert is involved early, we can narrow the sample, correct assumptions, and reframe the narrative before numbers harden; it’s not unusual to see assessments cut in half when the facts get presented the right way:
- Challenge nexus conclusions before they snowball
- Reduce penalty and interest exposure with timely positioning
- Keep state communications tight, consistent, and documented
Results that Speak for Themselves
We’re not here to brag; we’re here to lower exposure. In one recent audit, we helped reduce a proposed assessment by over 60% by correcting sourcing and substantiating exempt transactions.
In another case, we offset an assessment with a refund claim that covered roughly 40% of the remaining balance. Sales tax audit defense pays off. Nobody enjoys paying tax twice on the same revenue
A Proven 4-Step Sales Tax Defense Process
- Pre-audit risk scan: We review audit notice scope, prior filings, nexus footprint, and likely issue areas, quickly, but carefully.
- Document curation & narrative: We organize support and build a plain-English story that matches the transactions, exemptions, and sourcing logic.
- Sales tax audit defense negotiations: We communicate with auditors, push back where needed, and keep sampling methods and assumptions reasonable.
- Appeals & refund claims: If the numbers still don’t add up, we take it up the chain, and we also look for refund offsets where available.
Common Triggers We Neutralize
- Resale-certificate gaps and inconsistent exemption support
- SaaS sourcing errors across multiple jurisdictions
- Drop-ship misunderstandings between the vendor and customer states
- Use-tax accrual misses on fixed assets and supplies
- Marketplace-facilitator confusion post-Wayfair
- Nexus conclusions based on incomplete activity history
Sales Tax Defense FAQ
When should we bring you in: before or after the first auditor call?
Earlier is usually better. If we’re involved from the first notice, we can shape scope, protect timelines, and prevent casual statements from becoming “facts” in the workpapers. If you’ve started, our sales tax audit defense team will triage quickly.
What should we pull together for an initial conversation?
Keep it simple. A few basics help us spot risk faster:
- The audit notice (and any IDR list)
- A high-level sales by state summary
- Notes on systems used (ERP, tax software, invoicing)
Do you only help with one state, or can you manage multi-state audits?
We work nationwide and can support companies operating in all 50 states. Multi-state audits are often where a consistent strategy really pays off and expert sales tax audit defense matters.
We use tax compliance software – why isn’t that enough?
Software can calculate and file, but it doesn’t interpret gray areas or advocate when an auditor disagrees. We step in where judgment matters:
- Taxability and sourcing interpretation
- Sales tax defense and negotiation strategy
- Documentation, exemptions, and remediation plans
Schedule a Free Audit-Risk Assessment
If you’ve received an audit notice (or you think one is coming), reach out. We’ll do a high-level file review and tell you what we’re seeing: risks, quick wins, and where not to waste energy.
Call 972-488-5000 or contact us online, and we’ll get you scheduled. Book a call with one of our sales tax audit defense experts.