
ONESOURCE Determination
ONESOURCE Determination automates calculations for sales tax, use tax, GST, VAT, and excise tax.
What ONESOURCE Determination is
ONESOURCE Determination automates calculations for sales tax, use tax, GST, VAT, and excise tax. The web-based product connects with ERP, financial, billing, e-commerce, point-of-sale, and payment systems through pre-built or custom integrations. It delivers global tax rates, rules, and calculations in real time, and supports high transaction volumes through synchronization with its cloud tax engine. Deployment options include a cloud-based indirect-tax engine and edge computing. Determination Anywhere is intended to support business-specific security and data-residency requirements. The product provides tax content for specialized jurisdictions and industries, with offerings for oil and gas, retail, manufacturing, and technology. Configuration features cover company structures, global calculations, and tax-return streamlining. Thomson Reuters says its automated calculations and certified processes aim to reduce audit-triggering mistakes; those processes are backed by SSAE 18 and ISAE 3402 certifications. Pricing is available on request, and prospective customers can request a free demo.
Good
- Calculates five listed indirect tax types
- Connects through pre-built or custom integrations
- Delivers tax rates and rules in real time
- Supports high transaction volumes
Watch out
- Pricing is available on request
- No listed price for the product
Who it suits
ONESOURCE Determination suits organizations handling multiple indirect tax types across connected business systems. Its industry-specific content and deployment options may suit businesses with specialized jurisdiction, security, or data-residency requirements.
Verdict
ONESOURCE Determination brings multi-jurisdiction tax calculations and business-system integrations into a web-based product. Interested organizations can request a demo, but need to ask for pricing.
Plans and prices
From ONESOURCE Determination's own pricing page, checked 11 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| ONESOURCE Determination | Priced on request | Pricing by request; contact sales for a demo |
The facts
Each one read from ONESOURCE Determination's own pages, with the date it was checked.
What it does
- API
- Thomson Reuters describes API and integration offerings for connecting Determination to business systems and adding capabilities.checked 11 Oct 2026
- Audit risk reduction
- Aims to reduce audit-triggering mistakes through automated calculations and certified processes.checked 27 Sep 2026
- Certificates
- Certificate Manager centralizes customer exemption certificates and includes reminders, reporting, customizable email templates, and a customer portal.checked 11 Oct 2026
- Configuration features
- Supports company-structure configuration, global tax calculations, and tax-return streamlining.checked 27 Sep 2026
- Data residency
- Determination Anywhere supports business-specific security and data residency requirements.checked 27 Sep 2026
- Deployment model
- Offers a cloud-based ONESOURCE Indirect Tax engine with an edge-computing option.checked 27 Sep 2026
- Edge deployment
- Determination Anywhere uses edge computing and can maintain business-specific security and data residency requirements while synchronizing with the cloud tax engine.checked 11 Oct 2026
- Global tax content
- Provides current global tax content for specialized jurisdictions and industries.checked 27 Sep 2026
- High-volume processing
- Supports high transaction volumes through automatic synchronization with the cloud tax engine.checked 27 Sep 2026
- Industry support
- Provides industry-specific offerings for oil and gas, retail, manufacturing, and technology.checked 27 Sep 2026
- Integrations
- The product offers pre-built integrations for 60+ financial systems, including SAP, Oracle, and Microsoft Dynamics 365 for Finance and Operations.checked 11 Oct 2026
- Integration types
- Supports both pre-built and custom integrations.checked 27 Sep 2026
- Intended users
- The product is positioned for business tax teams and supports industries including oil and gas, retail, manufacturing, and technology.checked 11 Oct 2026
- Notable limit
- Production-environment load testing is not supported under the product-specific terms; load tests may be run in pre-production with prior written notice and an agreed schedule.checked 11 Oct 2026
- Pricing availability
- Pricing is not provided; the pricing page reports that it cannot find the page.checked 27 Sep 2026
- Product provider
- The product is provided by Thomson Reuters.checked 27 Sep 2026
- Purpose
- Automates global indirect tax calculations for sales tax, use tax, GST, VAT, and excise tax.checked 11 Oct 2026
- Real-time updates
- Automatically delivers global tax rates, rules, and calculations in real time.checked 27 Sep 2026
- Reporting
- Reporting and analytics support compliance, reconciliation, audit defense, and data analysis, with production-ready and custom reports.checked 11 Oct 2026
- Sales support
- Users can contact a representative with questions about the product.checked 27 Sep 2026
- Security and compliance
- The features page states that ONESOURCE is SOC 1 and SOC 2 certified annually.checked 11 Oct 2026
- Security certifications
- Its processes are backed by SSAE 18 and ISAE 3402 certifications.checked 27 Sep 2026
Money
- Free demo
- A free demo can be requested.checked 27 Sep 2026
The company
- Headquarters
- New York, New York, United Stateschecked 23 Sep 2026
The full review of ONESOURCE Determination
ONESOURCE Determination is a web-based indirect-tax product for organizations calculating tax across jurisdictions and connecting those calculations to business systems. It best suits businesses with complex, high-volume or industry-specific tax needs. Its breadth and real-time tax content are compelling; custom pricing and a sales-led demo make it a less direct fit for teams seeking a self-serve tool.
Overview
Provided by Thomson Reuters, Determination automates sales tax, use tax, GST, VAT and excise tax calculations. It combines global tax content with connections to ERP, finance, billing, commerce, point-of-sale and payment systems. That scope is useful when tax has to follow transactions across several operational systems, rather than being handled in a single checkout flow.
Key features
- Broad tax coverage: Automated calculations span multiple tax types and jurisdictions, including specialized industries and regions. Real-time delivery of rates and rules helps keep calculations current as transactions are processed.
- Business-system connections: Pre-built and custom integrations give organizations options for connecting existing systems. The range is an advantage for varied technology environments, though custom work may be needed to match a particular setup.
- Deployment and scale: The cloud-based indirect-tax engine has an edge-computing option, and automatic synchronization supports high transaction volumes. Determination Anywhere supports business-specific security and data-residency requirements.
- Controls and configuration: Company-structure configuration, global calculations and tax-return streamlining address more than checkout arithmetic. Automated calculations and certified processes are intended to reduce mistakes that can trigger audits; the processes are backed by SSAE 18 and ISAE 3402 certifications.
- Industry offerings: Dedicated options for oil and gas, retail, manufacturing and technology make the product more relevant to organizations with sector-specific tax needs.
Pricing
Determination is paid software with custom pricing. Organizations can request a free demo and contact a representative, but there is no self-serve price to compare against a budget before speaking with sales. That route is more suited to businesses evaluating a substantial tax operation than smaller teams looking for a clearly priced subscription.
Platforms
Determination is web-based. Its cloud engine and edge-computing option provide deployment flexibility within that web product, while integrations connect it with operational systems. The product supports exemption certificates as well as real-time tax calculations.
Who it's for
Consider Determination if your organization needs multiple indirect-tax types, global jurisdiction coverage, high transaction throughput and integrations spanning business systems. Its industry-specific content and data-residency support are particular strengths for complex organizations. A team with a narrower need, limited transaction volume or a preference for transparent, self-service pricing may find the sales-led custom-pricing model harder to justify.
Pros and cons
Pros
- Wide tax and jurisdiction coverage: One product handles sales, use, GST, VAT and excise calculations, including specialized jurisdictions and industries.
- Built for connected operations: Pre-built and custom integrations, plus automatic synchronization, suit businesses processing tax across multiple systems and high transaction volumes.
- Operational safeguards: Certified processes, real-time rule updates and support for data-residency requirements address compliance and deployment concerns.
Cons
- Custom pricing requires a sales conversation: A free demo can be requested, but teams cannot assess a published subscription price up front.
- Its breadth may be unnecessary for simpler needs: Organizations needing tax calculations in only one narrow workflow may not benefit from the global and industry-specific scope.
- Web is the supported platform: The product offers cloud and edge deployment options, but its listed platform is web.
Alternatives
For organizations comparing tax software, Tax Engine Software and Tax Compliance Software are useful category starting points.
- Zamp is worth considering for teams that want a free 30-day sandbox before choosing a paid tax solution.
- CCH SureTax offers a choice between technology-only, filing and remittance, or fully outsourced service models.
- Stripe Tax may suit teams seeking tax calculation and collection integrations for Stripe Billing, Checkout, Invoicing or Payment Links.
- Kintsugi is a freemium alternative with a free plan for nexus monitoring, exposure and historical liability audits, and risk assessment.
- Vertex Cloud Indirect Tax is another paid API-based option.
- Anrok may suit businesses preferring published starting prices, including $50 a month per market for eCommerce companies.
- Numeral offers a freemium option with free nexus study and monitoring.
- Sphere may fit teams with fewer than 10 regions seeking a published Starter price of $100 a month.
Verdict
Choose ONESOURCE Determination when your organization needs global, multi-tax calculations tied into a complex business environment, especially at high volume or with industry-specific requirements. Its integration breadth, real-time content and deployment flexibility are the strongest reasons to shortlist it. Look elsewhere if a narrow tax workflow and an upfront, self-serve price matter more than that breadth.
Getting started
- Open the ONESOURCE Determination website
- Contact a representative about pricing and a demo
- Request the free demo
- Choose cloud, edge, or self-hosted deployment requirements
- Connect supported ERP, financial, billing, commerce, POS, or payment systems
- Configure company structures and tax calculations
Limits worth knowing
Pricing is provided by request, and there is no free plan. Production-environment load testing is excluded; load tests may be run in pre-production with prior written notice and an agreed schedule.
Questions
What tax types does it calculate?
It calculates sales tax, use tax, GST, VAT, and excise tax.
Which platforms are supported?
Platforms include API, Linux, self-hosted, web, and Windows.
Is there a free plan?
No. Pricing is paid and available on request, while a free demo can be requested.
Can it connect to existing business systems?
Yes. It supports pre-built and custom integrations with ERP, financial, billing, e-commerce, POS, and payment systems, including more than 60 financial-system connectors.
Does it manage exemption certificates?
Yes. Certificate Manager centralizes exemption certificates and provides reminders, reporting, customizable email templates, and a customer portal.
Who provides the product?
The product is provided by Thomson Reuters; the listed maker is ONESOURCE Determination.




