Vertex Sōl: Connected. Intelligent. Governed.
A governed foundation for Decision-to-Defence™—connecting tax intelligence, workflows, decisions, and evidence.
See sooner, understand the impact, act with control, and stand behind the outcome.
Tax problems surface late. The story behind them is scattered. A tax decision can travel across systems, workflows, teams, and time. When its context is disconnected, teams spend more time finding, reconciling, and reconstructing the information needed to explain the outcome.
Work is fragmented.
Tax work, approvals, and evidence span applications, reports, spreadsheets, inboxes, and specialist knowledge.
Issues surface late.
Important conditions may become visible only at close or when an authority asks, leaving less time to understand and respond.
Proof must be reconstructed.
When a decision is questioned, teams may have to piece together the records, reasoning, and approvals behind it.
One connected journey, from determination to defence.
Vertex Sōl brings the Decision-to-Defence journey into a connected, governed experience that helps your team see sooner, understand the impact, act with control, and preserve the context and evidence behind the outcome.
See sooner.
Bring relevant changes and conditions forward while there is still time to understand what they mean and decide what to do next.
Understand the impact.
Connect regulatory change to the policies, configurations, and transactions it may affect, so your team can see what is affected and decide what to do next.
Act with control.
Apply levels of trust to AI-supported analysis and recommendations, allowing automation within defined controls while tax professionals retain authority over consequential decisions.
Keep the record connected.
Carry context, actions, approvals, and available evidence forward, creating a clearer record for future audit and defence workflows.
Bring intelligence into the work.
Apply Vertex intelligence and expertise in the context of the decisions and workflows where your team needs it.
Connect the journey.
Bring tax decisions, compliance work, and defence into one connected experience—built on your Vertex foundation and expanding over time.
See Decision-to-Defence come to life.
Follow three familiar tax moments across one connected journey, from understanding the impact of a change, to governed action during the period, to bringing forward the record when an auditor calls
Decide.
A rule changes. See how Vertex Sōl brings a regulatory change and relevant tax context together, presents the potential impact, and prepares supporting evidence for your team’s review.
Comply.
Work continues. See how Vertex Sōl surfaces relevant changes and issues, traces the cause, recommends a next step for professional review, and keeps action within defined controls.
Defend.
The auditor calls. See how Vertex Sōl brings together a notice, relevant records, and available evidence—and makes gaps visible for customer or advisor review.
Companies trust Vertex to transact, comply and grow with confidence.
“Vertex's software has consistently improved our indirect tax compliance process, reducing our financial exposure during an audit.”
Why Vertex can connect Decision-to-defence.
Among enterprises with at least US$250m in revenues and 1,000 employees.
Source: 2026 primary research conducted by Emerald Research Group; n=650 enterprise decision-makers, US/EU markets; statistically significant at 95% confidence.
Starts with the tax decision.
Vertex connects that decision to the transaction—the atomic unit of commerce—and carries its context through e-invoicing, reporting, and defence, creating the foundation for a more connected journey.
Puts governance into the work.
Intelligence and automation support the workflow while professional judgment and defined controls govern consequential decisions.
Builds toward a connected record.
Vertex connects more of the context, actions, approvals, and available evidence across the journey, making outcomes easier to understand and support.