Tax provision software

Close faster and with confidence using ONESOURCE Tax Provision

Get accurate tax estimates faster and streamline your close process so your finance and tax teams can focus on what matters most — confident, defensible reporting

Built to power every step of your close

Generate accurate tax entries automatically

Cut manual rework and protect your close with the market-leading calculation engine inside ONESOURCE Tax Provision. Tax entries are generated automatically, so your team spends less time re-checking numbers and more time delivering estimates that finance and auditors can trust.

Drill down and report on your terms in seconds

Move from consolidated tax amounts to entity-level detail in a few clicks, then build reports customized to your department's specific needs, all with filtering available throughout the application. Answer audit questions, stakeholder requests, and internal reviews fast, without digging through spreadsheets.

Connect to any ERP system and your existing Excel workpapers

Keep the systems you've already invested in. ONESOURCE Tax Provision integrates directly with your enterprise resource planning (ERP) system and Excel workpapers, syncing data automatically across jurisdictional levels. Your team stops doing double work and you avoid the cost and disruption of replacing systems you've already built around.

Scale your organization with a powerful tax provision software

Upper-mid-sized corporations

Simplify growing provision complexity with tax provision software built for teams at growing companies.

Multinational enterprises

Navigate cross-border reporting demands with confidence as a global tax and finance team at large organizations.

Enterprise corporations

Scale enterprise-grade control, automation, and audit readiness for tax departments at international corporations.

Trust a product built on speed, accuracy, and decades of tax expertise

See ONESOURCE Tax Provision in action

Watch how ONESOURCE Tax Provision transforms your close process, from data consolidation to defensible estimates — every step in minutes instead of days.

Engineered for forecasts you can stand behind

Deliver accurate, auditable forecasts that hold up even as tax rules change. Our tax provision software is built on deep tax domain expertise, not just spreadsheet formulas.

Built for audit-readiness and easy integration

Keep your existing systems in place. ONESOURCE Tax Provision connects seamlessly to your ERP and Excel workpapers, so you get audit-ready results without rework.

Designed to be used, not endured

Stop wrestling with complicated tax software. ONESOURCE Tax Provision has an intuitive interface that lets your whole team — not just tax specialists — own tax entry, analysis, and reporting.