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SCOTUS’ online sales tax ruling might not be the final word

March 18, 2018

Internet shopping is now the preferred purchasing method for millions. Just ask Toys R Us, which has blamed its decision to shutter its operations largely on losses to remote sellers.

But the taxation of products bought online is still a mish-mash of state laws.

That could change in a few months depending on what the Supreme Court of the United States (SCOTUS) decides in a high-profile remote sales tax case. 

Internet-Sales-Tax_map_Tax-Foundation

The oral arguments in the case, South Dakota vs. Wayfair, are set for April 17, which just happens to be this year's federal tax return filing deadline. SCOTUS' decision is likely to be announced in late June.

Many states could be affected: As the Tax Foundation map above shows, 13 states still rely on the current physical presence rule set out in the Supreme Court's 1992 North Dakota vs. Quill decision.

The Quill ruling said only sellers actually located in a state, for example, with a subsidiary there, had to collect sales taxes on items purchased remotely. Back then, mail order was the primary remote sales option.

In recent years, as the internet grew and popularized online shopping, states have enacted their own and various nexus designation rules, as shown in the Tax Foundation map. In these states, Quill's physical presence standard is expanded.

Overall, writes Joseph Bishop-Henchman, executive vice president of the Washington, D.C.-based tax policy nonprofit in a Fiscal Fact examining the coming SCOTUS ruling and potential Congressional action, 31 of the 45 states with a sales tax have rewritten their state tax collection authority to sellers with no physical presence in the state.

That earns 31 this week's honor as the By the Numbers figure.

Undercutting the Commerce Clause: This variety of sales tax laws is problematic, for buyers, sellers and states.

"Some of these laws are well-crafted, but many are not and are imposing significant and disparate compliance burdens on out-of-state sellers," writes Bishop-Henchman. "To date, federal and state courts have upheld these laws, and there is strong likelihood that the U.S. Supreme Court will do so as well."

And this, adds Bishop-Henchman, has created precisely the scenario that the Commerce Clause sought to avoid: unlimited tax authority that burdens interstate commerce. 

Congressional standard preferred: What really is needed is federal legislation that would, in the words of the Tax Foundation white paper, reestablish meaningful limits on state tax powers.

"Congress should act to rebuild limits on state tax power, and these limits should include a nexus standard that scales with the burden it imposes," writes Bishop-Henchman.

Specifically, the paper cites four pending Congressional interstate sales tax proposals:

  • the Mobile Workforce bill, which would limit state income taxes only to those physically present in the state for at least 30 days (many now tax from day 1);
  • the Business Activity Tax Simplification Act (BATSA), which would require a threshold of activity in the state before corporate or gross receipt tax is owed;
  • the Digital Goods and Services Tax Fairness Act, which defines which one state (the address of the purchaser) gets to tax digital transactions that are everywhere and nowhere; and
  • the Remote Transactions Parity Act (RTPA), which would authorize states to collect sales taxes on internet purchases made by their residents (and only their residents, physically present in the state), so long as the state adopts meaningful simplifications to their sales tax system.

These proposals seek to pare back state tax authority, according to the Tax Foundation, to ensure that state taxes not burden interstate commerce, that they not discriminate against interstate commerce relative to in-state commerce and that they not tax more than their share of interstate commerce.

Final decision by…: Given that the days of no-sales-tax on online shopping are effectively over, what do you think should happen?

Should we just let the Supreme Court justices decide? Of course, that decision could be so narrow as to not affect the rest of the sales-tax-collecting states.

Or do you think comprehensive federal action on interstate sales tax collection is necessary, regardless of the coming SCOTUS ruling?

While Congress has a spotty record on tax legislation, personally I'd prefer a federal law in this area.

My main reason for preferring federal action is that it would be easier, relatively speaking, to make future changes to a law than to go through the tedious legal system.

Let's be real. The Quill ruling on mail order sales made it clear that time and taxes march on. Changes to sales tax laws will be necessary as technology, shopping and interstate commerce continue to evolve.

You also might find these items of interest:

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TO WRAP UP 2026

It’s over! With October’s extended filing deadline behind us, it is now time to focus on year-end moves to reduce your 2026 tax bill. 

You’ll find ways to do just that on the Tax Tips page (see the More Tax Posts drop-down menu at the top of the blog), as well as the separate tax tip pages for each month, notably October through December. If you’re on the Tax Tips page, you’ll find a monthly list at the end of this column. If you’re on another blog page, you can head straight to the October tips; at the bottom of that tips page you’ll find links to all the other 11 months’ collections of tax advice.

Not to spoil what you’ll find in that tax advice, but it does cover such things as tax deductions for charitable donations, investment moves that could reduce tax due, and ways to max out your tax-favored retirement savings. 

Finally, as the year winds down, things get hectic. There are lots of other things to occupy our time, like the much more fun upcoming holidays. But don’t lose sight of taxes, since timing is key. To be of use, most tax moves must be made by the end of the tax year. That’s Thursday, Dec. 31, which also is the last business day of the year. 

So that you don’t miss that final tax year deadline, also keep an eye on the countdown clock below. It will keep you on top of just how much time is left to make important, tax-saving moves. (Note: I’m in the Central Time Zone, so adjust accordingly for where you live.)

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