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Consulting Services | Tax Software | Tax Resources | Government

Consulting Services

  • YETTER YETTER knows sales tax, offering expansive tax consulting and tax technology services for local and global companies. Since 1996, YETTER works closely with financial and tax department leaders to translate complex issues, craft high-level strategies, evaluate solutions and train tax teams. Whether facing an impending audit or proactively calibrating compliance and risk, tax and IT professionals find answers, guidance and insight as a result of YETTER’s involvement.
  • Globegistics Globegistics delivers a wide range of services for VAT integration needs. Project success does not happen by accident. Identifying the correct implementation approach, roll-out strategy and internal pilot implementations are crucial to project success. Globegistics provides the expertise to identify the VAT implemenation approach that works best for your situation.
  • Pritchett Sales and Use Tax Consulting - Arkansas Sales and Use Taxes A consulting firm that offers refund reviews, audit defense, procedure manuals, legal opinion requests, educational seminars and consulting on specific issues.
  • Arkansas Sales and Use Tax School The Arkansas Sales and Use Tax School focuses on Arkansas Sales Tax issues and will offer two courses - A Beginner's Basic Course and An Advanced Course & Case Study.
  • R&M Consulting R&M is a boutique tax and internal audit firm built and run on passion. We don't just say "we care," we do - and it shows. It's evident in the expert team of tax and audit specialists that we've built, the around-the-clock support we provide and the way we tailor our services to your wants and needs. Working with us, you have a partner dedicated to helping you reach a higher level of success.
  • Veridical Tax Advisors At Veridical, we understand Canadian sales tax. In fact, whether you are a Canadian or non-Canadian organization, helping you understand, manage and administer your Canadian sales tax issues and concerns is what we do best. Drawing from our depth of experience both in industry and public practice, we are here to work with you to provide you with the practical solutions required to effectively manage your Canadian sales tax issues so that you can focus on what you do best.
  • Horwood Marcus & Berk Horwood Marcus & Berk has one of the country’s largest and most sophisticated State and Local Taxation (SALT) law practices. Our SALT practice is in the heart of a dynamic, flexible, and entrepreneurial firm. We are skilled at tax controversies, strategizing and consulting for Fortune 1000 clients and family businesses nationwide. CFO Magazine ranked us among the pinnacle of the country’s SALT practitioners, with good reason.
  • James Hamlin & Co., P.C James Hamlin & Co., P.C., is a CPA firm that provides a complete range of financial, consulting, payroll, tax preparation, and information technology services. We partner with clients helping them achieve business goals through effective counseling, tax planning, payroll, accounting and financial statement services. Helping Clients Build Value for 44 years !! Visit our web site or call our Marketing department to schedule a meeting to discover if we can help you and your business move to the next level. Our Business Development Managers are available to meet with you at your convenience and your location.
  • Your Payroll Department Your Payroll Department is a division of James Hamlin & Co., P.C., a CPA firm that provides a complete range of financial, consulting and information technology services. Our professionals focus on maximizing net worth. We help clients achieve their goals through effective tax, accounting and financial statement services. We offer the ability to integrate payroll and benefit programs through one provider. For example, we can review existing retirement programs and insurance coverage and design alternative benefit programs for your organization.
  • Law Firm which represents commercial and industrial real estate owners/users in Chicago and Cook County, Illinois. The web site contains detailed property tax information from all 50 states and over 3,500 links to various taxing authorities.
  • NexGen Advisors LLC NexGen provides professional services relative to economic development and public/private partnership. Practice areas include Tax Credits, Negotiated Incentives, and Project Funding using public finance/funding and other non-conventional sources.
  • Tax Trilogy Tax Trilogy is a quality focused tax compliance and consulting service provider. Tax Trilogy offers a comprehensive tax compliance and consulting solution which includes: source data analysis, return preparations, filing and payments, tax jurisdiction notice management and account reconciliation support.


Tax Software

  • Avalara Avalara helps businesses of all sizes achieve compliance with sales tax, VAT, excise tax, and other transactional tax requirements. Avalara’s suite of cloud-based software solutions is designed to effectively manage complicated and burdensome tax compliance obligations imposed by state, local, and other taxing authorities in the United States and internationally. Avalara is pre-connected into hundreds of the leading accounting, ERP, and ecommerce business platforms. The company processes millions of tax transactions daily, files hundreds of thousands of transactional tax returns annually, and manages millions of exemption certificates and other compliance documents. Founded in 2004, Avalara employs more than 850 people worldwide and enjoys partnering with CPAs to serve their clients sales tax compliance needs.
  • Vertex Inc. Founded in 1978, Vertex is the leading provider of corporate enterprise tax software and services worldwide. Vertex helps corporations realize the full financial and strategic potential of corporate tax, offering a variety of solutions that streamline, integrate and automate corporate tax processes. Vertex solutions serve multinational corporations in every major line of business tax including; income, sales, consumer use, value added, communications and payroll.
  • BNA BNA's products offer comprehensive coverage of every major aspect of sales and use taxes, including state exemptions, retail sales, streamlined sales tax, tangible property, and more. Also included are practice tools, source documents, and sample forms to fully equip you to deal with any transaction.
  • BillSoft Billsoft is a provider of indirect tax calculation products and outsourced compliance services including sales/use and telecommunication taxes.  EZTax calculates hundreds of taxes in 70,000-plus tax jurisdictions and for more than 85 countries.  The products are pre-integrated with existing billing systems and is easy to integrate with new or proprietary billing systems.  Provides advanced technology that calculates taxes correctly, no matter how complex, such as flat fee, percentage, per item, tax on tax, self-taxing, etc.
  • CCH CCHGroup provides a full range of sales & use tax compliance software, including rate look-up by ZIP code, a CD with all sales & use tax forms, tax calculation, liability reporting, and tax databases for system integration, all of which are updated monthly.
  • eDocSolutions eDocSolutions specializes in document imaging and management software. Their software package, eNable! for Resale & Exemption Certificates, is the industry leader for tracking, validating and managing your certificates. eNable! interfaces to Vertex, Taxware and many other systems. eDocSolutions is a tax technology corporation that has been in business over 18 years.
  • Industry Sales Tax Solutions Industry Sales Tax Solutions offers an up-to-date subscription database that provides easy to use taxability matrices to assist companies with sales and use tax decisions for transactions involving software and related services.
  • LexisNexis LexisNexis® is a leading global provider of content-enabled workflow solutions designed specifically for professionals in the legal, risk management, corporate, government, law enforcement, accounting, and academic markets. LexisNexis originally pioneered online information with its Lexis® and Nexis® services. A member of Reed Elsevier, LexisNexis serves customers in more than 100 countries with more than 15,000 employees worldwide
  • Pro Sales Tax The ProSalesTax database is updated as changes are issued by the various taxing authorities. We cross-check our Sales Tax data with multiple public, private, and government sources to insure the highest level of accuracy for your compliance.
  • The Sales Tax Clearinghouse The Sales Tax Clearinghouse offers sales and use tax assistance and tools to taxing authorities, merchants, and/or providers that offer any form of eCommerce service. By designing a database to specifically calculate sales and use taxes, STC clients have access to software, services, and raw sales tax data needed to determine and calculate the correct rates in over 7,000 states, counties, and cities.
  • Tax Data Systems Tax Data Systems has joined Thomson Reuters, the world’s leading source of intelligent information for businesses and professionals. Among numerous well-known and established brands, Thomson Reuters is home to ONESOURCE, the most comprehensive tax accounting solution, including ONESOURCE Indirect Tax, the only end-to-end global solution for centralizing the process for managing indirect tax determination, calculation, and compliance reporting. Thomson Reuters tax experts maintain the broadest and deepest coverage of indirect tax content in 14,500 tax jurisdictions in more than 175 countries. Together, we will deliver more robust indirect tax solutions to our combined customer base.
  • Taxware Taxware, part of ADP Tax and Financial Services, headquartered in San Dimas, CA., is a leading developer of global commercial tax compliance systems. Taxware's products simplify the tax calculation and compliance process with solutions for sales and use taxes, address verification, exemption processing, automated returns, e-commerce transactions, and value added tax (VAT) for businesses around the globe. Breaking new ground in the field of taxation for over 20 years, Taxware's solutions combine the most current research and changes in legislation with the best available automated processes-resulting in comprehensive tax compliance solutions that facilitate audits and support constantly changing tax laws.
  • Thomson Reuters ONESOURCE Indirect Tax ONESOURCE Indirect Tax is part of the Tax & Accounting business of Thomson Reuters with solutions designed to help companies effectively and efficiently comply with the growing complexity of indirect tax requirements around the world, including sales and use tax, VAT, GST, and industry and country specific taxes. The ONESOURCE Indirect Tax solution was formed from three renowned brands:  Sabrix, Abacus VAT Compliance and ONESOURCE Sales & Use Tax.  ONESOURCE Indirect Tax offers end-to-end global software solutions and implementation services to streamline tax planning, indirect tax determination, calculation, and reporting processes, and local tax compliance for companies of all sizes.

Tax Resources and Associations

  • is a free web-site which provides educational and reference content, specific to the topic of sales tax. Content is organized from a user perspective for quick and easy access. The site also includes a comprehensive sales tax product directory, as well as a job board which accepts free posts from employers, recruiters and candidates. The "Sales Tax Questions" section is a popular feature on the site, where submitted questions are answered by sales tax specialists (YETTER).
  • Council on State Taxation (COST) The Council on State Taxation is the premier state tax organization representing taxpayers. COST is a non-profit trade association consisting of nearly 600 multistate corporations engaged in interstate and international business. The primary objective is to preserve and promote equitable and nondiscriminatory state and local taxation of multijurisdiction business entities. As a member of COST, you will receive continuing education and training, legislative/regulatory advocacy and monitoring, networking opportunities with other state tax professionals, COST On-Line Information Network (COIN), COST Studies and Special Reports, COST Publications and Other Communications, Attorney/Consultant Referral Service, and many other important activities of COST.
  • The Institute for Professionals in Taxation (IPT) The Institute for Professionals in Taxationis a non-profit educational association serving over 4,400 members representing approximately 1,450 corporations, firms, or taxpayers throughout the United States and Canada. The Institute equips tax professionals in the private/corporate sectors to do a better job every day with valuable tools, top-flight educational programs, and timely notification of legislative actions and court decisions.
  • Tax Executives Institute (TEI) The Tax Executives Institute is dedicated to the development of sound tax policy, compliance with and uniform enforcement of tax laws, and minimization of administration and compliance costs to the benefit of both government and taxpayers. The mission of TEI is to enhance and improve the tax system and to serve its members, their employers, and society generally by facilitating interaction and training among members and their staff.
  • A Guide to Internet Resources Tax Sites Directory (Maintained by Dennis Schmidt, Associate Professor of Accounting, University of Northern Iowa. Copyright 1995-97) An excellent resource of hyperlinks to many primary sites, including several federal court sites, state tax sites, articles and international tax sites.
  • Will Yancey's Home Page Provides links to tax, accounting, finance, law, and other Web sites. Similar format to the site of his co-author, Dennis Schmidt.
  • Barry Rubin's Home Page Provides links to state tax forms, regulations and state tax codes when available in addition to various other federal tax sites, such as the IRS.
  • Arizona Tax Arizona Tax provides information on all areas of Arizona taxation, including sales, use, property, state income, including residency and unitary, city sales and various others. It covers judicial and administrative decisions, legislation, new and amended regulations, informal tax rulings, and all other sources of information in this field, including unpublished decisions. It also serves as a forum for raising issues, discussing audit positions and activities of the Arizona taxing authorities and anything similar.
  • National Association of Unclaimed Property Administrators (NAUPA) Provides links to various internet resources to search databases for state and federal unclaimed money and property.
  • Provides links to comprehensive accounting resources.
  • Comprehensive Human-Edited Directory
  • AICPA Provides links to all states for sales and use tax information, including tax rate tables, sales tax licenses, guides, publications, rules and regulations.
  • Affiliate Nexus and State Sales Tax Provides information on affiliate nexus and "Amazon" laws



  • Federation of Tax Administrators (FTA) The Federation of Tax Administrators' (FTA) mission is to improve the quality of state tax administration by providing services to state tax authorities and administrators. These services include research and information exchange, training, and intergovernmental and interstate coordination. The Federation also represents the interests of state tax administrators before federal policymakers where appropriate. This web page includes a handy link to forms pages for all states that maintain this information on the web in addition to many helpful state tax links.
  • Multistate Tax Commission The Multistate Tax Commission is an organization of state governments that works with taxpayers to administer, equitably and efficiently, tax laws that apply to multistate and multinational enterprises. Created by an interstate compact, the Commission: encourages tax practices that reduce administrative costs for taxpayers and States alike, develops and recommends uniform laws and regulations that promote proper state taxation of multistate and multinational enterprises, encourages business compliance with state tax laws through education, negotiation and enforcement, and protects state fiscal authority in Congress and the courts.
  • IRS' Small Business and Self-Employed Tax Center Offers small business employers and self-employed a one-stop guide to federal and state tax and wage reporting information. The One-Stop Guide for Businesses page walks employers through the process of starting a business, hiring employees, and understanding reporting requirements. It also links to tax forms, publications, electronic reporting opportunities, state tax offices, and other tax-related web sites.
  • Streamlined Sales Tax Project This website is designed to keep you informed with all the latest news and developments regarding the Streamlined Sales Tax Project.
  • United States Post Office The US Postal Service Zip code look up provides not only 9-digit zip codes, but also the county of the requested address.
  • WowWorks City Guide This web page has links to each state and then from each state you can link to cities in the state official web page and in some cases the Chamber of Commerce. In some cities, you can get to the Revenue page.
  • State and Local Government on the Net The State and Local Government on the Net Directory provides convenient one-stop access to the websites of thousands of state agencies and city and county governments. Only pages that are controlled and managed by state and local government agencies are included.
  • Municipal Code Corporation This web page has links to Ordinances and Codes for a variety of municipalities.
  • Colorado Municipal League This web page has links to Colorado municipalities including special reports and options to purchase additional materials.
  • Canadian Web Pages

  • Puerto Rico Sales Tax This website is provided to keep you up-to-date with sales and use tax regulations. It provides an array of sources, such as tax filing, payment system, application for registration, and Sales and Use Tax general information. Although the site is in Spanish, much of the information offered is translated into English.

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