Beyond Returns: A Modern Approach to Sales Tax Compliance

The scale and interconnected nature of these challenges have elevated indirect tax into a broader operational and governance concern for both CFOs and tax leadership. This has accelerated post-pandemic, with a push toward digital-first models and generative AI.

Business models have become far more difficult to classify from a tax perspective. Companies are increasingly selling bundled offerings that combine software, digital services, AI-enabled functionality, subscriptions, support, and tangible products into a single customer experience. Traditional distinctions between product and service are becoming less clear, while state and local tax rules continue to vary widely in how these offerings are sourced and taxed. SaaS, digital goods, cloud-based platforms, and AI-driven solutions remain areas of ongoing evolution and inconsistency across jurisdictions.

This complexity is occurring alongside major changes in company system architecture. Many organizations now operate across multiple ERPs, billing platforms, ecommerce systems, marketplaces, procurement tools, and data environments. These intricate ecosystems are often layered together through acquisitions, rapid growth initiatives, or disconnected system decisions across departments. As a result, tax departments are increasingly managing fragmented transactional ecosystems where data quality, integration gaps, and inconsistent tax logic create compliance risk through manual processes and best guesses.

Taxing authorities themselves are becoming more technologically sophisticated. States are investing in digital enforcement capabilities, automated matching processes, and modernized audit approaches. Taxing authorities now have greater visibility into transactional activity through marketplace reporting, payment processors, and interconnected datasets. This has significantly reduced the likelihood that inconsistencies, under-collections, or registration gaps remain undetected. Audits and subsequently, tax assessments, are on the rise.

Another important shift is the growing expectation that tax departments provide operational insight rather than simply execute technical compliance. CFOs increasingly want visibility into audit exposure, nexus risk, refund opportunities, system weaknesses, reserve considerations, and the financial impact of tax process failures. Tax leaders are being asked whether the underlying compliance process itself is scalable, controlled, and sustainable.

In recent years, many tax departments have been required to absorb this additional complexity without increases in headcount—and often with decreased headcount. This has forced sales and use tax departments to rethink how work is structured, documented, automated, and governed. Highly manual processes, spreadsheet dependencies, and knowledge living in one person’s mind are viewed as operational risks.

The question, “Did we file returns?” is no longer the sole indicator for increased risk. For tax departments, the biggest questions to ask include:

• Can we trust the underlying data?
• Are tax decisions occurring consistently upstream?
• How dependent are we on one individual’s institutional knowledge?
• Can our processes scale without linear headcount growth?

As a result, the strongest tax departments are moving toward more integrated operating models that combine compliance, data validation, analytics, workflow management, notice resolution, audit readiness, and technology coordination into a more cohesive monthly compliance framework.

Today’s indirect tax environment increasingly requires professionals who can operate across finance, technology, data analytics, operations, process design, and cross-functional business coordination. Tax leaders are now expected to understand ERP and billing systems, evaluate data integrity risks, participate in automation and transformation initiatives, interpret operational impacts of new business models, communicate effectively with executive leadership, and translate technical tax issues into broader financial and operational considerations.

This transformation forces the modern sales and use tax function to evolve from a narrowly specialized discipline into a multidisciplinary operational capability requiring a broader and more diverse skillset. Unfortunately, most sales and use tax departments are not designed to support the demands of modern business environments.

A New Operating Model

Organizations are increasingly exploring outsourced and co-sourced operating models not simply as a staffing solution, but as a way to create greater operational resilience and scalability within the tax function.

Modern outsourced tax department solutions differ significantly from traditional “return preparation outsourcing” models. Rather than functioning as a disconnected filing vendor, these operating models are increasingly designed to integrate into the broader compliance lifecycle, supporting activities such as data validation, use tax accrual, reconciliation processes, audit support, workflow coordination, and process documentation.

For many organizations, the objective is not to remove internal ownership of tax strategy or decision-making. Instead, the goal is often to establish a more stable and sustainable operational framework that reduces key-person dependency, improves consistency, and creates more predictable monthly execution.

This is particularly important in environments experiencing rapid growth, ERP transitions, acquisitions, decentralized operations, or fragmented billing and transactional systems. In these cases, the challenge is frequently less about technical tax knowledge alone and more about building repeatable processes capable of functioning consistently across changing operational environments.

Technology also plays a growing role in these operating models. Modern outsourced tax department solutions often incorporate the outsourced partner’s tools, allowing companies to benefit from cutting-edge technological advances without the heavy investment and maintenance required internally. At DMA, this includes tools such as TaxARC™, a premier tax data warehouse and analytic tool that incorporates OCR, ML/AI, and MPU functionality into a sales and use tax review and accrual powerhouse.

Asking the Right Question

Ultimately, the conversation around outsourcing indirect tax is evolving.

Instead of asking: “Who can prepare the returns?”

Ask: “How do we build a scalable, resilient sales and use tax operation that can support the business long term?”