A CFO’s Playbook To Transform the Indirect Tax Function

Why indirect tax can't stay on the sidelines

Rapid changes in global commerce, technology, and tax regulation are making indirect tax management harder than ever. E-commerce growth is driving more audits. Jurisdictions are hiring more auditors to close revenue gaps. And real-time reporting mandates already common in Europe are heading to the U.S. For CFOs, the question is no longer whether to modernize the indirect tax function. It's how.

The ongoing impact of Wayfair

The 2018 South Dakota v. Wayfair ruling eliminated the physical-presence requirement for sales tax nexus. Five years on, states continue to enact economic nexus legislation, and the rules keep changing. Remote workers, inventory locations, and even trade show attendance can create nexus exposure. Staying current on these definitions is a real challenge, and getting it wrong creates real risk.

Accurate tax mapping is harder than it looks

Mapping products and services to the right tax categories sounds straightforward. In practice, it's complex. Tax rules vary by jurisdiction, taxability changes frequently, and even vendor classification inside your ERP can create audit exposure. As Larry Mellon, tax director in the Chief Tax Office at Vertex, explains: no financial decision should be made without evaluating the tax impact. That standard requires both disciplined processes and reliable technology.

When indirect tax is overlooked, the risk spreads

Companies that leave indirect tax out of digital transformation initiatives pay a price. Manual processes slow down expansion into new markets. Misclassified transactions can trigger audits that affect not just your business but your vendors. And inaccurate filings (even minor ones) can create penalties, budget overruns, and inconsistent customer experiences across channels.

What the right technology makes possible

A third-party tax engine integrated with your financial systems gives your team faster access to accurate data, automates rate and rule updates, and frees up bandwidth for higher-value work. Even lean tax teams can shift from reactive to proactive, catching errors before they become audit findings. The key is thoughtful implementation: technology can update tax rules automatically, but your team still owns the responsibility of mapping products and services to the correct taxability categories.

Treating indirect tax as a strategic priority

Indirect tax touches nearly every area of your business: compliance, reporting, risk management, and growth planning. This eBook gives CFOs a practical framework for closing gaps in current processes, building a more integrated approach to tax management, and making the case for technology investment. The goal is a tax function that supports growth with confidence, not one that's always catching up.