Best Enterprise Sales Tax and VAT Compliance Software

How Many Sales Tax and VAT Compliance Software Products Does G2 Track?

Total Products under this Category: 188

Category Stats (Oct 2026)

  • Average Rating: 4.58/5 (↑0.05 vs Sep 2026) The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Numeral (+2.67%) - Among all products in this category, Numeral recorded the largest rating increase compared to last month

Last updated: October 07, 2026

How Does G2 Rank Sales Tax and VAT Compliance Software Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 4,400+ Authentic Reviews
  • 188+ Products
  • Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

G2 Grid® for Sales Tax and VAT Compliance Software

G2 Grid® for Sales Tax and VAT Compliance Software plotting products by satisfaction and market presence

Highlighted products: Vertex, Avalara, SAP Document and Reporting Compliance, Fonoa, Sovos, ONESOURCE Indirect Tax, and tax.com.

Underlying data: [Grid® JSON](https://www.g2.com/categories/sales-tax-and-vat-compliance/grids.json?focus%5B%5D=vertex-inc-vertex&focus%5B%5D=avalara&focus%5B%5D=sap-document-and-reporting-compliance&focus%5B%5D=fonoa&focus%5B%5D=sovos&focus%5B%5D=onesource-indirect-tax&focus%5B%5D=tax-com-tax-com&segment=enterprise)

Vertex

Vertex is the Decision-to-Defense global indirect tax and compliance company. We help enterprises control indirect tax and compliance with confidence. From tax determination and e-invoicing to reporting, filing and audit defense, we make outcomes easier to prove and improve over time. Our ability to integrate across ERP, e-commerce, marketplace, procurement, CRM, and other financial systems means customers can centralize tax determination and compliance to improve accuracy and consistency for the business. Since 1978, Vertex has specialized in helping businesses navigate one of their most critical responsibilities: indirect tax and compliance. We combine deep domain expertise, trusted tax data, and innovative technology to ensure businesses and communities thrive through trusted transactions.

Average Rating: 4.4/5.0

Total Reviews: 458

How Do G2 Users Rate Vertex?

  • Integrations: 7.9/10 (Category avg: 9.0/10)
  • Has the product been a good partner in doing business?: 8.2/10 (Category avg: 9.4/10)
  • Global/Cross Borders: 7.4/10 (Category avg: 8.5/10)
  • Analytics: 7.3/10 (Category avg: 8.9/10)

Who Is the Company Behind Vertex?

  • Seller: Vertex Inc.
  • Company Website:
  • Year Founded: 1978
  • HQ Location: King of Prussia, PA
  • Twitter: @vertexinc
    4,857 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    2,487 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Tax Manager
  • Top Industries: Retail, Manufacturing
  • Company Size: 56% Large, 24% Medium

What Do G2 Reviewers Say About Vertex?

AI-generated summary from verified user reviews

Pros
  • Users find Vertex to be super user-friendly, making it easy to train and access for all levels of expertise.
  • Users commend the responsive customer support of Vertex, making it easy to implement and user-friendly.
  • Users value the easy and quick tax updates from Vertex, which save money and simplify compliance for audits.
  • Users find the support associates very helpful, providing easy-to-understand instructions and friendly assistance.
  • Users value the accuracy of tax calculations, ensuring precise tax codes and rates readily available for audits.
Cons
  • Users feel that improvement is needed in finding materials and updating lookup tables efficiently.
  • Users find the interface complex, lacking onboarding and requiring support for essential changes, complicating their experience.
  • Users express frustration over poor customer support, with slow resolutions and difficulties reaching appropriate representatives.
  • Users experience technical issues with Vertex, including slow updates and performance problems affecting overall functionality.

What Are Recent G2 Reviews of Vertex?

What Are G2 Users Discussing About Vertex?

Avalara

Avalara is the agentic AI leader in global tax and compliance. For more than two decades, Avalara's trusted tax content, deep compliance expertise, proprietary data, and technology have helped customers succeed on a global scale. Avalara now pairs that foundation with agentic AI to help businesses execute complex compliance work while keeping people in control. Avalara processes more than 54 billion AvaTax API calls annually and supports millions of businesses worldwide. For more information, visit Avalara.com.

Average Rating: 4.1/5.0

Total Reviews: 909

How Do G2 Users Rate Avalara?

  • Integrations: 7.3/10 (Category avg: 9.0/10)
  • Has the product been a good partner in doing business?: 7.1/10 (Category avg: 9.4/10)
  • Global/Cross Borders: 6.2/10 (Category avg: 8.5/10)
  • Analytics: 7.2/10 (Category avg: 8.9/10)

Who Is the Company Behind Avalara?

  • Seller: Avalara, Inc.
  • Company Website:
  • Year Founded: 2004
  • HQ Location: Durham, NC
  • Twitter: @avalara
    24,788 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    5,633 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Controller, CFO
  • Top Industries: Computer Software, Retail
  • Company Size: 46% Medium, 37% Small

What Do G2 Reviewers Say About Avalara?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the ease of use of Avalara, simplifying sales tax filing and transaction tracking effectively.
  • Users value the tax automation of Avalara, significantly saving time and reducing compliance risks in their processes.
  • Users appreciate the ease of filing with Avalara, making sales tax compliance simple and efficient.
  • Users appreciate the ease of use of Avalara, especially for managing customer exemption certificates and nexus thresholds.
  • Users value the excellent customer support from Avalara, appreciating the ease of access and implementation assistance.
Cons
  • Users note that communication on changes and updates needs improvement for a smoother Avalara experience.
  • Users experience poor customer support, noting a lack of guidance and quick ticket closures without solid resolutions.
  • Users encounter tax issues with Avalara, often requiring additional support and documentation for effective usage.
  • Users experience poor support services with slow responses and lack of proactive communication during implementations.
  • Users face numerous billing issues with Avalara, including unexpected charges and poor account management communication.

What Are Recent G2 Reviews of Avalara?

What Are G2 Users Discussing About Avalara?

SAP Document and Reporting Compliance

SAP Document and Reporting Compliance (DRC) is SAP’s integrated compliance solution designed to automate electronic document processing and statutory reporting. Key features include automated e-invoicing, electronic document exchange, VAT and tax reporting, real-time connectivity with government authorities, compliance dashboards, audit trails, and country-specific localization support. SAP DRC also supports global regulatory mandates such as Peppol, SAF-T, and continuous transaction controls while providing centralized monitoring and exception handling within SAP S/4HANA. The primary value of SAP DRC is helping organizations simplify and automate complex regulatory compliance processes across multiple countries. Many businesses struggle with fragmented reporting systems, changing legal requirements, manual reporting tasks, and compliance risks. SAP DRC addresses these challenges by providing a unified, ERP-integrated platform that reduces manual effort, minimizes reporting errors, improves audit readiness, and enables faster adaptation to evolving tax and e-invoicing regulations. This helps companies lower operational costs, reduce compliance penalties, and improve overall financial process efficiency. SAP SE is a German multinational software company headquartered in Walldorf, Baden-Württemberg, Germany. Founded in 1972 by five former IBM engineers, SAP has grown into one of the world’s largest enterprise software providers, serving over 400,000 customers across more than 180 countries. The company specializes in ERP, finance, supply chain, HR, and business transformation solutions.

Average Rating: 4.1/5.0

Total Reviews: 36

How Do G2 Users Rate SAP Document and Reporting Compliance?

  • Has the product been a good partner in doing business?: 9.2/10 (Category avg: 9.4/10)

Who Is the Company Behind SAP Document and Reporting Compliance?

  • Seller: SAP
  • Company Website:
  • Year Founded: 1972
  • HQ Location: Walldorf
  • Twitter: @SAP
    297,052 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    149,349 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Financial Services, Accounting
  • Company Size: 45% Large, 42% Medium

What Are Recent G2 Reviews of SAP Document and Reporting Compliance?

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Fonoa

Fonoa is the first global tax automation platform that allows you to validate tax IDs, calculate taxes, generate invoices and e-invoices, report transactions and file your tax returns through a single solution. 6 reasons to choose Fonoa: 1. Comprehensive Global Tax Technology Solution - Fonoa is the only provider that offers a full suite of tax automation products on a global scale: tax ID validation, invoicing and e-invoicing, calculations, and returns. 2. Fast implementation - Our enterprise solutions are on average implemented 16 times faster than the legacy players. This is thanks to our simple API which offers quick integration and flexibility to meet your needs, allowing for new market or product launches in days. 3. Automated Data Processing - Our system automatically processes data from yours, thoroughly cleans it, and then returns it post-processing, reducing your hands-on work. 4. Scalability - Fonoa offers a timely delivery of new requirements, easy expansion to new countries, and effortless handling of increased volumes. 5. Agile Support - 80% of tickets are solved in one touch and with an average solving time of under 16 hrs. You will have a dedicated team of tax, engineering, and product experts throughout implementation and the entire engagement lifecycle. 6. Full Transparency - Fonoa was built as a single global platform with one UI and the same data format across countries. Fonoa has rapidly grown to become a trusted partner for businesses worldwide seeking to navigate the intricacies of tax compliance effectively, which is why companies such as Zoom, Uber, Remote, Groupon, Squarespace and Netflix trust Fonoa to automate and manage their global tax obligations.

Average Rating: 4.6/5.0

Total Reviews: 43

How Do G2 Users Rate Fonoa?

  • Integrations: 8.5/10 (Category avg: 9.0/10)
  • Has the product been a good partner in doing business?: 9.7/10 (Category avg: 9.4/10)
  • Global/Cross Borders: 7.1/10 (Category avg: 8.5/10)
  • Analytics: 7.7/10 (Category avg: 8.9/10)

Who Is the Company Behind Fonoa?

  • Seller: Fonoa
  • Company Website:
  • Year Founded: 2019
  • HQ Location: Dublin, County Dublin, Ireland
  • LinkedIn® Page: www.linkedin.com
    267 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Information Technology and Services, Computer Software
  • Company Size: 77% Large, 21% Medium

What Do G2 Reviewers Say About Fonoa?

AI-generated summary from verified user reviews

Pros
  • Users commend Fonoa's exceptional customer support, noting prompt responses and a seamless transition experience.
  • Users commend Fonoa's helpful customer support and prompt assistance that enhances their overall experience.
  • Users value the prompt and effective communication from Fonoa, enhancing their project management and support experience.
  • Users value Fonoa's compliance simplification, enjoying seamless tax validation and improved operational efficiency across markets.
  • Users value the easy integrations with Fonoa, enabling seamless expansion into new markets with minimal compliance burdens.
Cons
  • Users note a need for improved integration understanding while Fonoa expands and refines its postpaid invoice features.
  • Users face tax issues with VAT validation and US sales tax, although support from Fonoa's team is responsive.
  • Users find the pricing model quite expensive, making it challenging to forecast costs for growing transaction volumes.
  • Users note the limited service availability as Fonoa lacks full country coverage and specific postpaid features.
  • Users find complex customization challenging, as unclear guidelines make initial setup difficult and confusing.

What Are Recent G2 Reviews of Fonoa?

Sovos

Sovos is tax compliance software that helps businesses determine, report, and remit taxes and meet e-invoicing mandates across nearly 200 countries from a single platform. Companies use Sovos to automate sales & use tax and VAT determination, comply with real-time e-invoicing and continuous transaction control (CTC) mandates, file and remit returns, manage exemption certificates, and handle tax information reporting such as 1099 and related forms. Built for enterprises and high-growth businesses, the Sovos Compliance Cloud unifies indirect tax, e-invoicing, and regulatory reporting so finance and tax teams can keep pace as governments move to real-time, digital enforcement. Sovos processes 16 billion+ transactions per year for 100,000+ customers — including half the Fortune 500 - and integrates with the ERP, billing, and procurement systems businesses already run, such as SAP, Oracle, NetSuite, and Microsoft Dynamics. Sovos Intelligence, powered by the Sovi AI assistant, adds natural-language analytics and cross-dataset reconciliation, so teams can catch discrepancies before filing and answer tax-authority questions in hours, not weeks. Sovi is Sovos's AI assistant, part of Sovos Intelligence. Tax and finance teams can ask questions about their own compliance data in plain language and get instant reports, charts, and insights. No SQL or analyst ticket required. Paired with Mirror Visibility, which reconciles e-invoicing, VAT, and SAF-T data across sources, Sovi helps teams catch discrepancies before filing and respond to audits with source-backed evidence.

Average Rating: 4.2/5.0

Total Reviews: 101

How Do G2 Users Rate Sovos?

  • Integrations: 7.1/10 (Category avg: 9.0/10)
  • Has the product been a good partner in doing business?: 8.1/10 (Category avg: 9.4/10)
  • Global/Cross Borders: 8.0/10 (Category avg: 8.5/10)
  • Analytics: 8.2/10 (Category avg: 8.9/10)

Who Is the Company Behind Sovos?

  • Seller: Sovos
  • Company Website:
  • Year Founded: 2015
  • HQ Location: Wilmington, MA
  • Twitter: @SovosCompliance
    1,360 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    1,856 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Accounting, Insurance
  • Company Size: 46% Medium, 39% Large

What Do G2 Reviewers Say About Sovos?

AI-generated summary from verified user reviews

Pros
  • Users value the quick and responsive customer support from Sovos, enhancing their overall experience and efficiency.
  • Users value the excellent customer service of Sovos, citing their responsiveness and support in addressing issues effectively.
  • Users value the automation capabilities of Sovos for efficient "womb to tomb" 1099 processing, streamlining their workflows.
  • Users find Sovos' platform to have ease of use, benefiting from quick support and helpful tutorials.
  • Users appreciate the excellent communication and timely support available with Sovos, enhancing their overall experience.
Cons
  • Users find the complex interface of Sovos can complicate troubleshooting and hinder a smooth experience.
  • Users find that improvement is needed in user-friendliness and overall navigation of the Sovos platform.
  • Users find the user interface complex, especially during troubleshooting and when accessing reporting options.
  • Users find the user interface complex, suggesting it should be more intuitive for occasional use.
  • Users find the separate login requirement for the compliance portal inconvenient and wish for better integration.

What Are Recent G2 Reviews of Sovos?

What Are G2 Users Discussing About Sovos?

ONESOURCE Indirect Tax

ONESOURCE Indirect Tax from Thomson Reuters is a cloud-native platform that helps organizations automate indirect tax determination, compliance, reporting, and e-invoicing across global jurisdictions. Combining trusted tax content with powerful automation, ONESOURCE enables businesses to accurately calculate VAT, GST, sales and use tax, and excise tax while keeping pace with changing regulations. By connecting tax, finance, and business systems in a single platform, ONESOURCE reduces complexity, improves accuracy, and helps organizations stay compliant while scaling confidently in an evolving regulatory landscape.

Average Rating: 3.8/5.0

Total Reviews: 42

How Do G2 Users Rate ONESOURCE Indirect Tax?

  • Integrations: 8.1/10 (Category avg: 9.0/10)
  • Has the product been a good partner in doing business?: 8.3/10 (Category avg: 9.4/10)
  • Global/Cross Borders: 8.9/10 (Category avg: 8.5/10)
  • Analytics: 9.0/10 (Category avg: 8.9/10)

Who Is the Company Behind ONESOURCE Indirect Tax?

  • Seller: Thomson Reuters
  • Company Website:
  • Year Founded: 2008
  • HQ Location: Toronto, CA
  • Twitter: @thomsonreuters
    150,224 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    36,803 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 47% Large, 28% Small

What Are Recent G2 Reviews of ONESOURCE Indirect Tax?

What Are G2 Users Discussing About ONESOURCE Indirect Tax?

tax.com

tax.com, powered by Ryan, helps corporate tax teams simplify compliance across property tax, transfer pricing, and unclaimed property. The platform automates complex workflows, centralizes documentation, and delivers precision built on decades of Ryan tax expertise. Companies use tax.com to reduce audit exposure, eliminate manual effort, and gain confidence in every filing.

Average Rating: 4.6/5.0

Total Reviews: 80

How Do G2 Users Rate tax.com?

  • Integrations: 8.3/10 (Category avg: 9.0/10)
  • Has the product been a good partner in doing business?: 9.1/10 (Category avg: 9.4/10)
  • Global/Cross Borders: 9.2/10 (Category avg: 8.5/10)
  • Analytics: 9.7/10 (Category avg: 8.9/10)

Who Is the Company Behind tax.com?

  • Seller: tax.com™
  • Company Website:
  • Year Founded: 2022
  • HQ Location: Dallas, TX
  • LinkedIn® Page: www.linkedin.com
    112 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Manufacturing, Accounting
  • Company Size: 39% Large, 34% Small

What Do G2 Reviewers Say About tax.com?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the ease of use of Tax.com, facilitating quick and secure information sharing for tax compliance.
  • Users find Tax.com to be a significant time-saver, making tax preparation smoother and less overwhelming.
  • Users appreciate the real-time tracking features of Tax.com, ensuring timely updates and efficient property tax management.
  • Users highlight the exceptional customer support at tax.com for being quick, knowledgeable, and responsive to needs.
  • Users appreciate the real-time visibility and control provided by tax.com, enhancing insights across multiple tax types.
Cons
  • Users find that improvement is needed in support response times and feature limitations, complicating their overall experience.
  • Users note the missing features in Tax.com, requiring additional providers and leading to inefficient data handling.
  • Users report poor customer support with Tax.com, frequently facing delays and difficulty in reaching assistance when needed.
  • Users find the complex interface of tax.com cumbersome, though they appreciate ongoing improvements to enhance usability.
  • Users report that the complexity of issues can lead to longer turnaround times for resolutions.

What Are Recent G2 Reviews of tax.com?

Nathan Calabrese
NC
Researched and written by Nathan Calabrese
Updated