> Business Description: DDH is an award-winning multi-state sales tax consulting firm. We know nationwide 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.

- [Economic Nexus in 2026: Multi-State Sales Tax Obligations Explained - Davis & Davis LLC](https://ddhtax.com/2025/12/03/economic-nexus-2026-multi-state-sales-tax-obligations-explained/): Economic nexus rules are evolving in 2026. Learn how thresholds work, why multi-state sales tax compliance is challenging, and what steps businesses must take to stay compliant.
- [Sales Tax Audits in 2026: What Businesses Should Expect and How to Prepare - Davis & Davis LLC](https://ddhtax.com/2025/12/03/sales-tax-audits-2026-what-to-expect-how-to-prepare/): Sales tax audits are increasing in 2026. Learn what triggers an audit, how states are using data analytics, and the steps businesses should take to prepare and stay compliant.
- [Year-End Sales Tax Compliance: A Checklist for 2025 - Davis & Davis LLC](https://ddhtax.com/2025/12/03/year-end-sales-tax-compliance-a-checklist-for-2025/): Get ahead of 2026 penalties with this year-end sales tax compliance checklist. Reconcile accounts, review nexus, update exemptions, and explore voluntary disclosure.
- [Texas Tax Exempt Organizations: Collecting Sales Tax and One Day Tax-Free Sales - Davis & Davis LLC](https://ddhtax.com/2018/10/15/texas-tax-exempt-organizations-collecting-sales-tax-and-one-day-tax-free-sales/): Tax exempt organizations are required to collect and remit sales tax for taxable items sold. Sales tax exemptions are for purchases and do not cover sales.
- [Sales Tax Blogs - New Laws, Insights, and Strategies from DDH Tax](https://ddhtax.com/blog/): The latest from DDH Tax Consultants and Tax Law Experts | Read how the latest sales tax laws can affect you and your business and how you can be prepared.
- [Is Welding As A Service Taxable? What You Need To Know - Davis & Davis LLC](https://ddhtax.com/2014/04/28/welding-taxable/): TEXAS - Welding may be taxable when it constitutes the performance of a taxable service. It is determined by the specific type of work performed. Learn more
- [South Dakota vs. Wayfair Inc. - Supreme Court Case - DDH Tax, LLC](https://ddhtax.com/2018/04/25/south-dakota-vs-wayfair-inc-supreme-court-case/): In Quill vs. North Dakota, the 26-year old ruling made the internet generally a tax-free zone for most online sellers that do not have a physical presence in a state. Learn more...
- [Texas Tax Exempt Organizations: Purchases and Sales - Davis Davis & Harmon](https://ddhtax.com/2018/09/13/texas-tax-exempt-organizations-purchases-and-sales/): Navigating the tax-exempt organization landscape can be confusing and daunting. Follow along to look at different aspects of the Texas tax-exempt scenario.
- [Texas Marketplace Sellers to Generate $850 million in Tax Revenue - Davis Davis & Harmon LLC](https://ddhtax.com/2019/09/11/texas-marketplace-sellers-to-generate-tax-revenue/): Texas Governor, Greg Abbot, signs Bill requiring Marketplace Facilitators to collect and remit tax starting October 1, 2019.
- [Florida Tax Holidays and Exemptions - Davis & Davis LLC](https://ddhtax.com/2022/07/13/florida-tax-holidays-and-exemptions/): Florida sales and use tax and property tax legislation is enacted that provides a number of tax holidays and temporary exemptions.
- [2019 State Business Tax Climate Index - Sales Taxes - Davis & Davis LLC](https://ddhtax.com/2018/11/30/2019-state-business-tax-climate-index-sales-taxes/): The Tax Foundation has released its 2019 State Business Tax Climate Index. This Tax Climate Index is made up of 5 major components.
- [Texas vs Amazon: Who won? - Davis & Davis LLC](https://ddhtax.com/2015/08/12/texas-vs-amazon-who-won/): Three years on, a much-watched deal to settle a sales tax collection dispute between Texas and Amazon.com appears to have benefited both sides, according to an analysis published Sunday August 9, 2015 by The Austin American-Statesman.
- [The Tax Exempt Organization: An Quick Overview - Davis Davis & Harmon LLC](https://ddhtax.com/2018/08/31/the-tax-exempt-organization-criteria-and-the-application-process/): Sales to and purchases from tax-exempt organizations can be a slippery slope. Understanding the rules can go a long way in keeping you on solid ground.
- [Deon Harmon, Panel Speaker - NABA Annual Western Regional Student Conference - Davis Davis & Harmon, LLC](https://ddhtax.com/2018/10/31/deon-harmon-panel-speaker-naba-annual-western-regional-student-conference/): Davis Davis & Harmon LLC, spoke the National Association of Black Accountants, Inc. Western Region Student Conference held October 11-13 in Dallas, Texas.
- [Texas Tax Amnesty Program Set to Begin May 1st - DDH Tax, LLC](https://ddhtax.com/2018/04/11/texas-tax-amnesty-program-set-to-begin-may-1st/): The Temporary Texas Tax Amnesty Program will run from May 1st to June 29th.  The program applies to periods prior to Jan. 1, 2018, and will only include liabilities that have not been previously reported to the Comptroller. Learn more...
- [New York: Laser Sales Exemption Decision Overturned - Davis & Davis LLC](https://ddhtax.com/2022/08/25/new-york-laser-sales-exemption-decision-overturned/): New York State Tax Appeals Tribunal (TAT) reversed the decision of an Administrative Judge(ALJ) who wrongly found that a dermatology manufacturer (taxpayer) prohibited the sale of Excimer: Laser equipment was non-taxable.
- [Our 8th Annual Suit Drive is in Full Swing! - DDH Tax, LLC](https://ddhtax.com/2018/05/16/davis-davis-harmons-8th-annual-suit-drive-in-full-effect/): This year's suit drive will benefit Minnie’s Resale Boutique. Minnie's Resale Boutique is the official resale shop of Minnie's Food Pantry, a 501c3 non-profit organization with a mission to provide healthy meals, resources and red carpet treatment to every person that they serve.
- [Texas Expands Tax on SaaS - Davis & Davis LLC](https://ddhtax.com/2017/09/13/texas-expands-tax-saas/): Read what you need to know about Texas SaaS Law. Cloud-based texts or messages are now considered taxable data processing services.
- [Texas: Streaming Services are now Taxable as Amusement and Cable TV](https://ddhtax.com/2018/05/02/texas-streaming-services-are-now-taxable-as-amusement-and-cable-tv/): Read the new sales tax guidelines on Texas streaming services. From the sales tax experts and consultants of DDH Tax.
- [Airbnb Says Yes To Tax Vacation Rentals - Davis & Davis LLC](https://ddhtax.com/2017/01/25/airbnb-says-yes-to-hotel-tax/): Making extra money by renting out a spare bedroom or an entire home has gotten increasingly easier, thanks to online listing services such as Airbnb.
- [8th Annual Suit Drive is in the books! - Davis & Davis LLC](https://ddhtax.com/2018/07/18/4405/): Dallas - Thank you, friends of Davis & Davis & Harmon LLC and our partners GS Wealth Management, Palter Stokely Sims, PLLCs and Delta Dallas for making this year's drive a success! As a result of your generosity, we were able to increase our collection by 25% over last year's totals. THANK YOU!
- ["Netflix Tax" Changing the Way New Media Platforms Do Business](https://ddhtax.com/2016/08/10/new-netflix-tax-changes-new-media-platforms-business/): New technologies require new state tax laws. Learn how states are implementing changes for companies like Netflix. Pasadena to tax Netflix.
- [Utah Imposes Cannabidiol Product Tax - DDH Tax, LLC](https://ddhtax.com/2018/05/09/utah-imposes-cannabidiol-product-tax/): Learn about Sales Tax laws regarding Cannabidiol products. The tax will go into effect July 1, 2019, or sooner if the Controlled substance Act allows the Department of Agriculture and Food receive a federal waiver.
- [AR: Sales and Use Tax: Seller Failed to Collect and Remit Tax on Aircraft Sale - Davis & Davis LLC](https://ddhtax.com/2022/09/27/ar-sales-and-use-tax-seller-failed-to-collect-and-remit-tax-on-aircraft-sale/): A taxpayer was properly subject to Arkansas sales and use tax on the sale of an aircraft because the taxpayer failed to collect the tax from the purchaser and remit it to the Department of Treasury and Administration
- [Arkansas: Sales & Use Tax: Consignment Sales of Used Children's Clothing Taxable - Davis & Davis LLC](https://ddhtax.com/2022/06/15/arkansas-sales-use-tax-consignment-sales-of-used-childrens-clothing-taxable/): The taxpayer's biennial consignment sales of used children's clothing would be subject to Arkansas sales and use tax.
- [SCOTUS ruling: Wayfair vs. South Dakota - Davis & Davis LLC](https://ddhtax.com/2018/06/21/scotus-ruling-wayfair-vs-south-dakota/): See the recent ruling from the Supreme Court on Wayfair vs. South Dakota.
- [Idaho: Event Sellers Must Pay and Collect Sales Tax - Davis & Davis LLC](https://ddhtax.com/2022/07/06/idaho-event-sellers-must-pay-and-collect-sales-tax/): Event sellers must pay and collect sales tax. Ensure you have the correct registration and permits to collect and pay sales tax in Idaho.
- [Illinois—Sales and Use Tax: Leasing of Signage Subject to Tax - Davis & Davis LLC](https://ddhtax.com/2022/08/30/illinois-sales-and-use-tax-leasing-of-signage-subject-to-tax/): The Illinois Department of Revenue issued a letter stating that the rental of identification signage by an out-of-state (taxpayer) company is subject to a use tax based on the cost price of the signage
- [Tax Free Back to School Shopping Around the Corner! Annual Sales Tax Holiday Dates -Davis Davis & Harmon LLC](https://ddhtax.com/2018/08/01/tax-free-back-to-school-shopping-around-the-corner/): Seventeen states currently have Tax Relief Holidays. While some states have various Sales Tax Holidays, the "back to school" holiday is the most popular.
- [FICPA Mega Conference in Orlando, Florida - DDH Tax Sales Consultants](https://ddhtax.com/2018/05/23/ficpa-mega-conference-in-orlando-texas/): Chanel Davis will be presenting a topic as a featured speaker at this year's Florida Institute of Certified Public Accountants' Mega CPE Conference
- [Sales Tax Legal | Sales Tax Specialists | Davis Davis & Harmon LLC](https://ddhtax.com/legalresearchandopinions/): Looking for some legal guidance dealing with sales tax or related issues? Davis Davis & Harmon LLC offers sales tax legal research and opinion services.
- [Media | Davis Davis & Harmon: Sales Tax Firm](https://ddhtax.com/media/): Explore DDH Tax's media resources for expert insights, articles, and updates on tax strategies and regulations.
- [Davis Davis & Harmon: Sales Tax Firm, Consultation, Experts](https://ddhtax.com/): Sales Tax Help You Need | Sales Tax Audit Defense, Refund Recovery, Nexus Analysis, Legal... Wayfair. Get Help From DDH Sales Tax Consultants & Experts.
- [Sales and Use Tax Services | Highly Experienced | Davis Davis & Harmon LLC](https://ddhtax.com/services/): Need help navigating the complex world of sales or use tax? DDH has years of experience providing businesses with a plethora of sales and use tax services.
- [Case Studies | Sales Tax | Davis, Davis & Harmon LLCDavis Davis & Harmon: Sales Tax Firm](https://ddhtax.com/casestudies/): Read case studies, challenges, and results from clients of Davis & Davis | Services to all 50 states | Sales Tax Experts
- [Reaching Your Nexus Threshold | Davis Davis & Harmon: Sales Tax Firm](https://ddhtax.com/reaching-your-nexus-threshold/): When you reach nexus threshold in a state, register to collect taxes with the correct state agency then begin collecting taxes from customers in that state.
- [Public Speaking - Sales Tax Experts | Davis, Davis & Harmon LLC](https://ddhtax.com/publicspeaking/): Book a public speaking engagement with the experts of Davis & Davis.
- [Careers & Jobs - Davis, Davis & Harmon LLC](https://ddhtax.com/careers/): Our model for success is hiring exceptional people. Get the latest careers and jobs postings and information from Davis, Davis & Harmon LLC and apply now.
- [About Davis, Davis & Harmon LLC - Sales Tax Experts](https://ddhtax.com/aboutus/): Davis, Davis & Harmon | Consultants & Experts in Sales Tax Law | Specialized knowledge in sales tax law in all 50 States | Texas Sales Tax Consultants
- [Schedule A Speaker | Davis Davis & Harmon: Sales Tax Firm](https://ddhtax.com/schedule-a-speaker/): Industry-leading Sales Tax Experts in Audit Defense and much More | Schedule a Davis & Davis Speaker
- [Sales Tax Audit Defense - Davis, Davis & Harmon LLC](https://ddhtax.com/auditdefense/): We vigorously defend our clients’ interests from the beginning of the audit through the appeals process, seeking to minimize their audit assessment.
- [Compliance Programs - Sales Tax Experts | Davis, Davis & Harmon LLC](https://ddhtax.com/complianceprograms/): Compliance | Eliminate costly errors and outsource your sales and use reporting administration to streamline your tax department.
- [Pre-Audit Compliance Reviews - Davis, Davis & Harmon LLC](https://ddhtax.com/preauditcompliance/): This is the most important action a business owner can undertake to help guard against a potentially devastating multi-year audit assessment in the future.
- [Sales Tax Maintenance Programs - Davis, Davis & Harmon LLC](https://ddhtax.com/salestaxmaintenanceprograms/): Our Sales Tax Maintenance Programs are designed to ensure that you are in compliance with the various taxing laws, regulations, and administrative policies.
- [Voluntary Disclosure - Sales Tax Experts | Davis & Davis LLC](https://ddhtax.com/voluntarydisclosure/): Our firm can negotiate Voluntary Disclosure Agreements with taxing authorities on your behalf.
- [Book Chanel Christoff Davis | Davis Davis & Harmon: Sales Tax Firm](https://ddhtax.com/book-chanel-christoff-davis/): Book Chanel Christoff Davis, Sales Tax Expert from Davis Davis & Harmon, an award-winning multi-state sales tax consulting firm in Dallas TX.
- [Certificate Management & Automation - Davis, Davis & Harmon LLC](https://ddhtax.com/certificate-management-automation/): Having a missing or outdated tax exemption certificate can be a red flag and cause for an audit. We will help ensure that you have the up-to-date certificates that you need. We will help ensure that you have the up-to-date tax exemption certificates that you need.
- [Contact Us | Davis Davis & Harmon Sales Tax Experts](https://ddhtax.com/contactus/): Reach out to schedule a FREE intro call with a tax expert as soon as the same day. We’ll listen to your situation and secure the tax relief you need.
- [Sales & Use Tax Refund Recovery - Davis, Davis & Harmon LLC](https://ddhtax.com/refundrecovery/): We will evaluate your operations and isolate areas of overpayment of sales or use taxes and manage the claim for Refund of any such overpayments.
- [Nexus Analysis | Expert Support | Davis Davis & Harmon LLC](https://ddhtax.com/nexus-analysis-2/): Understanding nexus is critical. The sales tax experts at DDH can help your business with nexus analysis, so you aren’t caught off guard.


##Entries

Q: Do you only help with audits?
A: No. DDH supports proactive compliance and sales tax consulting services, nexus questions, refund opportunities, and research-backed positions – then steps in if an audit notice arrives and timelines get tight.

Q: What should a business prepare before reaching out?
A: Bring:
A list of states where you sell or ship
Information about how you invoice/collect tax today
Any notices, filings, or prior advice
That’s usually enough to start narrowing exposure.

Q: Can software replace sales and use tax services from consultants?
A: Software can calculate and file, but it won’t interpret grey areas, defend your facts, or negotiate with states. That’s why sales tax advisory services, provided by experts, are so important.

Q: How fast can you help if we just received a notice?
A: Often immediately. DDH can help you triage deadlines, communicate with the state, organize support for key positions (taxability, exemptions, sourcing, nexus), and build a clean response package so the audit stays controlled.

Q: Can you help if we have past exposure or missed filings?
A: Yes. DDH helps quantify exposure, prioritize risk by state, and map remediation via sales and use tax services (voluntary disclosure or other resolution paths) while also tightening processes so the same issues don’t recur.