Navigating sales tax: Making sense of the new normal

From tariffs to ongoing battles against inflation, the e-commerce sector has once again found itself squarely in the eye of the storm that has unfolded so far in 2026. Yet, while geopolitical upheaval and tariff uncertainty have dominated headlines, one longstanding issue continues to induce more headaches for retail finance teams than any other: sales tax.

The sales tax landscape is notoriously complex, with over 12,000 local jurisdictions — each with their own unique and frequently shifting rates — that retail brands need to wade through. This is just the tip of the iceberg. Retail has moved beyond a brick-and-mortar proposition. With sales increasingly occurring via the web and third-party marketplaces and an ever-growing number of SKUs, retail financial teams are facing greater sales tax governance risks than ever before.

To combat these growing challenges, financial teams are looking for ways to optimize their sales tax operations. This is, of course, easier said than done but is eminently possible by prioritizing the right fundamentals and adopting the correct modernization tools and tactics for their organization.

Here are some of the most pressing challenges organizations are facing and how their financial teams can tackle them effectively.

Establishing where you have nexus

One of the biggest challenges financial teams face today is determining where they have nexus — where exactly they need to collect sales tax. For decades, businesses only needed to keep track of their physical nexus. Simply put, whether an organization has a physical presence in a given state such as store or office location or employees based in the state. This changed dramatically in 2018, when the Supreme Court allowed individual states to begin setting economic thresholds for nexus as well, such as total annual sales or a number of annual transactions in a state, in its landmark South Dakota vs. Wayfair, Inc. ruling. Therefore, retail and e-commerce businesses are no longer solely responsible for paying sales taxes in states where they have a physical presence but in any state where their sales or transaction numbers meet a certain benchmark. The fact that each state has its own thresholds further complicates matters. For example, California's nexus threshold is $500,000 in total sales. New York, on the other hand, has both a revenue and transaction threshold.

Needless to say, one of the first steps that need to be taken in closing sales tax compliance gaps is making sure you have a firm grasp of your nexus requirements for each state. From there, organizations need to establish streamlined workflows to aggregate nexus exposure and identify any potential liabilities. Once these baselines have been identified, organizations can then begin to get better visibility into what compliance expectations they face and how they are progressing toward them in real-time.

Dynamic and granular sales tax rate visibility

Because of the thousands of jurisdictions that exist, ensuring sales tax rates are accurate is arguably the biggest legacy headache that retail financial teams face. Beyond the volume of jurisdictions that need to be parsed through, the sales tax rate ecosystem is also layered and incredibly complex. For example, rates not only vary at a state-by-state level. Often, they differ on a county or city level as well. This means organizations could face hundreds if not thousands of potential rate shifts on a yearly basis that need to be accounted and adjusted for. 

Traditionally, financial organizations have relied on Zip+4 codes and static rate intelligence to determine exact sales tax rates. The problem becomes that these methods are notoriously unreliable and do not offer the accuracy and proactive intelligence needed to meet compliance regulations. Organizations that are able to embrace technology to identify rooftop rates – the exact rates for a given physical address – versus relying on a more vague and generic Zip+4 view will be able to unlock a new level of sales tax efficiency and intelligence that relies on science as opposed to best guesses. This will also aid them in getting a better sense of their nexus, and make filing for necessary state-level permits and reporting that much easier.

Modernize product classification

Today's retail world is definitely not your grandparents' retail world. Depending on the vertical, it is now commonplace for retailers to have upwards of 30,000 individual SKUs – a far cry from the independent department stores of the 1980s and earlier. Whereas even as recently as the 1990s when the shopping economy was based on tangible products, today's purchases are becoming more and more intangible and digital. And states are beginning to realize this is where the revenue is and are adapting in response. For example, California, arguably the state with the most identifiable digital economy today, will begin collecting sales tax on canned software — whether it's delivered electronically or accessed over the internet via the cloud — statewide in 2027 after it passed Senate Bill 122 in July. Custom software and digital goods like streaming services and e-books continue to be nontaxable. But how long will that last?

This means organizations need to adapt their product classification ops as a result. The way products are classified is hugely influential and highly nuanced when it comes to how sales tax is collected. For example, while some states may tax footwear that exceeds a certain value, others may largely have no sales tax on clothing at all. And a third category of states may not exempt footwear, except during special sales-tax-free periods called "sales tax holidays."  These usually span a weekend. But increasingly states are extending these tax-free periods.  Florida, for example, is in the middle of a back-to-school sales tax holiday that spans from July 20 to August 20.  The point is, if you're not accurately categorizing your products, you'll miss these tax free periods and potentially lose customers upset that you're charging tax when you shouldn't be.

These parameters are constantly changing, and with new digital products needing to be factored in as well, classification is only going to become more complex. Financial teams that can find ways to automate their classification will no longer have to sink significant amounts of time into manually checking and adjusting sales tax requirements. Streamlining these processes will also give financial teams a more centralized view of what is ultimately taxable and what is not.

Finding sales success in 2026 and beyond

For many financial teams, tackling all of their sales tax priorities during these rapidly evolving times feels like a Herculean effort. However, by keeping these few core fundamentals in mind and rethinking operations to proactively meet shifting expectations, financial teams will be able to close their gaps while unlocking new value for their organizations, in parallel, in a way that they haven't done before.