Writer, Blogger, Editor Avalara
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How Most States Uncover Noncompliant Sellers More Than Auditors

States now expect out-of-state businesses to register to collect and remit sales tax as required

Apr 2nd 2020
Writer, Blogger, Editor Avalara
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It’s been more than 18 months since the Supreme Court of the United States overruled the physical presence rule in South Dakota v. Wayfair, Inc. States now have economic nexus: They can require a business with no physical presence in the state to register to collect sales tax if that business has significant sales in the state.

For the most part, states eased into enforcing economic nexus; they understand it represents an enormous change for businesses and they’ve been working to educate rather than audit out-of-state sellers. Those days are gone. 

States these days are willing to put some effort into finding those that aren’t complying with their sales tax rules. So, how do they find noncompliant businesses based in other states? Read on.

Cross-Reference

Starting with what one knows can pay off. Marketplace facilitator and non-collecting seller use tax reporting laws enable state tax departments to identify out-of-state marketplace sellers that have had inventory in the state (in marketplace-owned or operated fulfillment centers) for years. That inventory creates a physical presence — and an obligation to collect sales tax.

California is among the states pursuing marketplace sellers for these uncollected back taxes. The California Department of Tax and Fee Administration can hold businesses liable for up to three years of back taxes.

Encourage Tips

Many states encourage citizens to identify businesses they suspect of tax evasion or fraud. For example, the Connecticut Department of Revenue Services has a referral form individuals can submit to report incidences of suspected noncompliance.

The Alabama Department of Revenue makes tax fraud personal: “Prosecuting tax evasion is about simple honesty and fair play between citizens that pay their fair share and those that willfully do not.” The department notes that tax evasion can lead to revenue shortages, which in turn “may inevitably influence tax increases on everyone.”

Examine Businesses That Change Hands

States often review businesses that change hands. If prospective owners don’t verify the company they’re buying is compliant, they could receive unwelcome attention from tax authorities after the sale goes through.

Hire More Auditors

Tax departments in numerous states, including Arizona, Oklahoma, and Wisconsin, have hired additional auditors in recent years in an effort to find noncompliant businesses. Kentucky and South Dakota will soon do the same.

More staff translates to more audits. If suspected businesses are selected with care — through data mining, references, or other means — those audits can be particularly lucrative for states.

Investigate

One of the simplest ways to determine whether an online seller is collecting sales tax in a state is to shop with them. Auditors sometimes do just that.

Not all remote vendors are required to collect sales tax in all states because most state economic nexus laws provide an exception for small businesses (e.g., those with less than $100,000 in sales or fewer than 200 transactions in the state in the current or previous calendar year). When auditors find online retailers that aren’t collecting tax, they may first contact the business to see if they’re aware of their potential collection responsibilities. Or they may go straight for the audit.

Mine Data

Numerous tax authorities in the United States and abroad use data analysis to help identify businesses with a high probability of noncompliance. According to a New York State Department of Taxation and Finance report, data mining provides a “more scientific data-driven approach to case selection” and helps discover “new patterns of non-compliance.”

Data mining techniques vary widely but all allow tax authorities to analyze massive amounts of data. Often used to identify anomalous behavior by registered vendors, data analysis is increasingly being used to identify out-of-state sellers that should be registered but aren’t.

Share Information

States share taxpayer information with each other through various regional information-sharing agreements; a business known to have significant sales in one state could have them in another state. States may also combine resources.

Members of the Multistate Tax Commission can participate in its Joint Audit Program, which “helps states learn of any inconsistent reporting to different states by multistate taxpayers.” The more information state tax authorities have, the better they’re able to locate noncompliant businesses.

Travel

Auditors can be most effective when they leave their desks: California sent auditors door to door for years to educate taxpayers and find noncompliant businesses; auditors in Idaho and Washington have approached entrepreneurial youth at their fruit and lemonade stands; and auditors sometimes attend trade shows to verify that exhibitors are registered as required.

It’s also common for state tax authorities to set up shop in other states. For example, the Oklahoma Tax Commission maintains divisions in other states and contracts with out-of-state private auditors to increase collections. And representatives from the Utah State Tax Commission travel nationwide to perform their work.

What This Means for Non-Collecting Sellers

This increased audit activity, or the threat of it, is starting to pay off. At last count, 5,715 businesses had registered through the Streamlined Sales Tax Registration System since the Wayfair decision. Thousands more have registered directly with individual state tax departments: some 5,026 in Illinois alone.

Related Articles

What it Means to Register for Sales Tax Collection

Why Economic Nexus Isn't Just for Sales Tax

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