Thomson Reuters and CERTifyTax
Find your sales tax audit exposure before auditors do
Move beyond certificate storage with CERTifyTax, built by tax attorneys to do what legacy exemption certificate management (ECM) tools can’t — validate, quantify, and remediate exposure
In partnership with
Auditors check taxed and exempt sales — your compliance should too
ONESOURCE Determination handles every taxed transaction across all U.S. and Canadian states and jurisdictions, integrating with your enterprise resource planning (ERP), customer relationship management (CRM), and e-commerce platforms. CERTifyTax handles every exempt sale — identifying discrepancies, quantifying exposure, and automating certificate acquisition to close every compliance gap.
Built for the way audits actually work
Built by attorneys
Use a platform founded by tax attorneys with real audit experience, built to reflect how audits actually work, not how compliance software assumes they do.
Powered by AI
Trust in AI that identifies, validates, and remediates certificate exposure with the precision required in high-stakes audit environments.
Designed to think like an auditor
Stay a step ahead with detection rules, exposure calculations, and remediation workflows that reflect real-world audit logic.
Every exempt sale is documented and defended
CERTifyTax is not a certificate storage tool. It is an exempt-sales risk mitigation tool that identifies improperly documented exempt sales, quantifies your exposure in real dollars by state and customer, and automates remediation before auditors arrive.
Identify
Rely on AI that automatically detects missing, expired, or improperly executed certificates across your entire portfolio — including all existing certificates — before auditors do.
Quantify
Pinpoint precise dollar exposure by state and customer segment so you can tell auditors exactly where the gaps are and which customers need to provide updated documentation.
Remediate
Close documentation gaps with automated outreach and collection workflows that handle the full remediation cycle — no manual chasing, no surprises at audit time.
ONESOURCE covers every taxed transaction. CERTifyTax covers every exempt sale. Together, they close compliance gaps so you can face any audit with confidence.
Latest insights
Stay informed with expert perspectives, trends, and thought leadership resources.
Blog
What triggers a sales tax audit? Tips to reduce the risks
Learn what puts companies on auditors' radar — and how to protect your exempt sales before it's too late.
Blog
Are hidden sales and use tax risks threatening your business agility?
See why manual compliance processes create audit exposure, and what it takes to stay ahead of risk.
Blog
Embracing AI and closed-loop automation for tax exemption certificate management
Certificate storage is not compliance. See how AI-driven automation is redefining exempt sales risk — before auditors do.
Ready to see it for yourself?
Tell us about your exempt sales compliance needs and a representative will follow up shortly to discuss how CERTifyTax can help you close audit exposure gaps.
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