Indirect Tax Partner Network Covering all your tax technology and service needs

Indirect Tax Partner Expertise

Leverage our expansive partner network to deliver a comprehensive indirect tax solution

Thomson Reuters ONESOURCE Indirect Tax realizes the importance of a strong partner network. Our partner relationships include major accounting firms many of which are part of our ONESOURCE Certified Implementer Program (CIP), Tax Technology Partners, System Integrators and Software Solution Providers.

Indirect Tax Certified Implementer Program Members

Certified Implementers have received specialized training and have acquired knowledge to ensure our clients are able to successfully implement our products. The CIP program provides a framework for qualified members to fully collaborate with Thomson Reuters and effectively address the needs of our customers.

Indirect Tax Certified Implementers are at the center of our partner network and are able to offer ONESOURCE Indirect Tax clients process efficiency consulting, integration and implementation services. They are an extension of the ONESOURCE team and play a crucial role in helping our customers manage implementation risk and can provide guidance on how best to leverage and optimize the Indirect Tax product suite.

Learn more about the Certified Implementer Program.

ONESOURCE Indirect Tax Partners

In addition to our partners that are part of our ONESOURCE Certified Implementer Program (CIP), we have a select list of partners who specialize in providing indirect tax consulting services, implementation support, and tax technology applications in support of our unique ONESOURCE Indirect Tax software and its various integration capabilities. These partners know our solution inside and out and they have consultants dedicated to working with Thomson Reuters indirect tax product team to provide solutions and services that help our technology work optimally in our clients’ business environments.

Check out our expert list of partners divided into 3 main categories:

Tax Partners

Our Tax Technology Partners are a key part of the ONESOURCE Indirect Tax partner ecosystem. They bring vast experience in automating transaction tax, provide consulting services focused around sales and use tax, and manage global tax technology implementation.



DMA provides functional and technical solutions that optimize the utilization of ONESOURCE Indirect Tax.  DMA’s development capabilities continue to produce utilities to mitigate business system limitations, accelerate project timelines and enhance our clients’ return on investment.  Our design and configuration methodology positions our clients to efficiently and effectively manage organizational changes.  DMA’s client solutions have positioned tax departments to be proactive, which results in added value to their organizations.  These solutions have included excise and environmental handling fees, and other non-traditional transaction taxes.  DMA has assisted clients to determine and calculate transaction tax in countries around the world including – U.S., Canada, EU, India, Brazil and China.



DSTax is a consulting firm specializing in sales and use taxes. Our clients represent a broad range of industries ans span from the Fortune 50 to middle-market.

By limiting our firm’s scope to sales and use tax consulting, we can focus our energies on core skills, resulting in superior service for our clients. We bring a strong “tax perspective” during your sales and use tax engine implementation.

In addition to being one of a few select Thomson Reuters certified partners, we also provide traditional sales and use tax consulting services, such as audit mitigation, voluntary disclosures, refund reviews, and tax research.



ERP and ERP Corp is a technology services, global management consulting, and outsourcing company, with splendid expertise in delivering & managing information technology services that spans across enterprise application implementations, management & support. Combining unparalleled experience, comprehensive capabilities, ERP and ERP Corp collaborates with clients/partners to help them become high-performance businesses and governments.

Our expertise in consulting, technology and outsourcing helps clients perform at the highest levels so they can create sustainable value for their customers and shareholders. Using our experience, industry knowledge, out-of-the-box thinking, service-offering expertise and technology capabilities, we identify new business and technology trends and develop solutions to help clients around the world.



Ryan is one of the leading tax services firm in North America. Our proprietary implementation methodology combines effective and efficient processes with business-relevant tax research to help us configure the ONESOURCE Indirect Tax solution to meet the U.S. and international tax requirements that matter to our clients. Our approach, coupled with our ongoing and significant investment in our Tax Technology team’s development and training, uniquely positions us as a preferred provider for implementing the ONESOURCE Indirect Tax solution.

LOGO Sarus


Sarus is a highly focused and skilled firm specializing in “Transaction Tax Automation”. Be it Sales/Use Tax in the United States or Value Added Tax in any part of the world, Sarus will help your company automate transaction taxes and take the guess work out of taxes. The end user intervention is minimized and the automation is seamless.

Sarus has years of experience automating transaction taxes with leading ERP systems as well as custom applications. Be it “Buy to Pay” or “Order to Cash”, we understand the nuances and complexities of every transaction from a taxation standpoint as they relate to US sales/use tax and VAT.

Our services are designed to help clients develop and implement effective transaction tax automation strategies which result in substantial benefits in the form of better cash flow, lower cost of compliance, and reduced legal risks, resulting in a compliant and highly competitive business.

LOGO SciQuest


SciQuest (Nasdaq: SQI) spend management solutions enable procurement, sourcing and financial professionals to focus on strategic decisions that transform business processes. Our feature-rich products and expert services help hundreds of organizations, including leading global companies, drive bottom line results by improving, automating and optimizing their source-to-settle processes. Learn more about our solutions and how we can help your organization turn spending into savings at

LOGO Taxaccord


Taxaccord is an experienced IT services company specializing in automated transaction tax solutions for major organizations. We provide integration services of ONESOURCE Indirect Tax with ERP and legacy systems within the EU. Not only can we help devise an automated tax solution yielding maximum benefit, we have the skills to perform and drive the IT integration project to success. Our UK-based support and maintenance group ensures the high level of accuracy, compliance and efficiency continues for years, giving you the confidence you need in your tax solution.

LOGO Tax Technology Group

Tax Technology Group

Tax Technology Group designs and implements tax technology solutions tailored to meet your specific business requirements. We help tax departments and organizations improve tax-related processes, and we help them implement or refine existing indirect tax solutions. Using our extensive tax technology experience, TTG guides you through the entire process, step by step. You receive an ideal solution–and better yet, you will actually understand it. Contact Kai Ranabargar at or 626.808.7764 for more information

LOGO True Partners Consulting

True Partners Consulting

True Partners Consulting is a world-class tax and business advisory firm that helps large public and private enterprises navigate complex tax and financial regulations without the Sarbanes-Oxley created conflicts inherent in offering both tax consulting and audit services. The firm provides a broad range of income, sales, use and property tax services, including maximizing the tax benefits associated with complex corporate transactions, acquisitions, dispositions, restructuring and bankruptcy; audit defense, accounting for income taxes and uncertain tax positions, refund reviews, negotiating and claiming credits and incentives, preparation or review of tax returns, unclaimed property, tax risk and process reengineering, international tax and transfer pricing.

True Partners Consulting provides accurate and useful tax analysis to its clients. Using our advice, our clients are able to achieve significant tax savings, accurately predict future tax expenditures, and develop long term growth strategies.

LOGO Tytho


Boasting a track record of well over 60 years of business experience while serving several multinationals. Tytho enables leading international businesses to meet their challenges in international Indirect Tax determination and compliance.

Through right-sized strategic advice, program management, training, hands-on implementation services and maintenance, Tytho creates simple solutions to complex tax and IT challenges. Whether a company needs short-term support or long-term sustainability, we are the unique partner that will apply bright tax automation insights to drive better business results.

The experts at Tytho discovered that when IT and tax expertise come together, the most efficient, intelligent and innovative solutions are the result. Tytho wants to be your tax automation partner-of-choice. Our ambition is to enable our clients to be in control of their tax automation, maximizing compliance and operational efficiency.



YETTER knows sales tax. It offers expansive tax consulting and tax technology services for local and global companies. Since 1996, YETTER has worked closely with financial and tax department leaders to translate complex issues, craft high-level strategies, evaluate solutions and train tax teams.

YETTER is a founding member of the TaxForward Alliance comprised of nine tax specialty firms that have evolved from national practices over the years that now, together provide a wide range of tax services ranging from Global tax technology implementation, US and Canadian indirect tax research and compliance, income tax, unclaimed property, tax planning and audit assistance. Each of the firms was founded by recognized leaders in their tax specialty areas.

Whether facing an impending audit or proactively calibrating compliance and risk, tax, and IT, YETTER professionals can find the answers and guidance you need. Contact Diane Yetter at (312) 701-1800 x 2 or for more information.

System Integrators

System Integrators expertise lies in understanding customer pain points and matching them with a complete solution. Benefit from System Integrators in our partner network that have a thorough understanding of the ONESOURCE Indirect Tax product line and can help you eliminate the risks associated with managing the calculation, reporting and compliance of indirect tax.

LOGO Accenture


Accenture is a global business consulting partner of ONESOURCE Indirect Tax from Thomson Reuters. Accenture’s Tax Transformation practice has led the way by providing holistic solutions that fully acknowledge and enable the tax organization as a cash management and value creating organization, not just a preparer of returns or a provider of legal and accounting advice. Our experience allows us to consider a wide range of opportunities for tax function improvement by developing a detailed understanding of a tax organization’s specific needs.

Please contact the following people for more information about Tax Transformation’s full line of capabilities: Mike Wallace Global Transaction Tax Automation Solutions Offering Lead Tel: (312) 693-5563 Email:

LOGO itelligence


itelligence, Inc. is a wholly owned subsidiary of itelligence AG, an international full-service solution and consulting company with a global presence in 21 countries. itelligence provides a broad range of consulting and customer support services to maximize SAP solutions, including implementations, business itelligence, application management services and hosting.

itelligence is a gold-level SAP channel partner authorized to resell SAP Business All-in-One and SAP BusinessObjects solutions and is one of only 6 SAP global services, global hosting and global application management services partners. itelligence also holds global quality accreditation by SAP Active Quality Management organization for demonstrating clear quality standards and processes.

Software Solution Providers

Thomson Reuters partners with the largest global ERP vendors as well as marketing leading industry solution providers to ensure our customers have peace of mind that our indirect tax solutions will seamlessly integrate with the world’s most trusted ERP systems.

LOGO Experian Data Quality

Experian Data Quality

Experian Data Quality is a global leader in providing data quality software and services to organizations of all sizes. We help our clients to proactively manage the quality of their data through world-class validation, matching, enrichment and profiling capabilities. With flexible software-as-a-service and on-premise deployment models, Experian Data Quality software allows organizations around the world to truly connect with their customers by delivering intelligent interactions, every time.

Established in 1990 with offices throughout the United States, Europe and Asia Pacific, Experian Data Quality has more than 13,500 clients worldwide in retail, finance, education, insurance, government, healthcare and other sectors. For more information, visit

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