
About Us
Our Team and Services
Sales Tax Helper LLC is team of sales tax professionals, including CPA’s and lawyers, with a dedicated focus on defending taxpayers against state revenue agencies. Sales Tax is simply what we do! Our team handles anything sales tax from compliance, such as returns, registrations, nexus studies and voluntary disclosures to consulting, to the receipt of the initial sales tax audit notice, through the appeal, protest and even administrative court. Because all we do is sales tax, we have the know-how to resolve any tax issue, of any size and scope.
Our team has successfully handled sales tax issues for decades ranging from small, mom-and-pop businesses to global, publicly traded companies, and every size in between. As such, by choosing Sales Tax Helper to represent your company (or your client’s company) with any of its sales tax problems, you can rest assured that you have made the right choice.
The Visionary Behind Sales Tax Helper
Gerald J. Donnini II, Esq., founded Sales Tax Helper LLC to simplify the complex world of sales tax compliance for businesses. With over a decade of experience as a sales tax attorney, Jerry recognized the frustrations many businesses faced with generic software solutions and outsourced support lacking U.S. sales tax expertise.
Determined to offer a better solution, Jerry envisioned a platform that combines the efficiency of technology with the personalized guidance of experienced U.S. lawyers, CPAs, and sales tax professionals. Sales Tax Helper provides businesses of all sizes with tailored solutions, from self-managed compliance tools to full-service representation for audits, appeals, and litigation.
Today, Sales Tax Helper reflects Jerry’s commitment to empowering businesses with innovative tools and expert support, helping them navigate sales tax challenges confidently while focusing on growth and success.

Resolving Tax Issues
Sales Tax Helper LLC is your partner for everything sales tax! We assist businesses with sales tax issues throughout the U.S. With clients in every type of industry, we have helped thousands with sales tax audits, protests, and administrative disputes. Because all we do is sales tax, we are not the typical tax firm that just uses a one-size-fits all approach. Our team really knows the intricacies of sales tax and can help you with your sales tax problem.


Reviews
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I can't say enough about Jerry and STH. We were in a bit of a panic re reaching nexus levels and dealing with reseller tax ...
- Mike L. -
My entire experience from intake to resolution with Sales Tax Helper was superior. '11' on a scale of 1-10! Initial meeting ...
- Tim N. -
I sincerely am grateful for the prompt, courteous, and helpful that has been offered me by Sales Tax Helper. My agent, Alex ...
- Carol M. -
When my business needed guidance with sales and use tax, I reached out to Sales Tax Helper through their website and received ...
- Pierce L. -
Jerry & Alex are excellent at what they do. They helped me navigate some very difficult and stressful situations. They’re ...
- Greg M. -
The team at Sales Tax Helper was excellent to work with. I had a complex business sales tax challenge that they methodically ...
- Mike M. -
Alex and Jerry always provide very accurate and prompt responses to my inquiries regarding the sales tax. They also bring ...
- Lukas P. -
Jerry is the best! I made the mistake thinking I could deal with the use tax auditor on my own not realizing that I would be ...
- Gary O.