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(CNSNews.com) - Of the 150,272,157 tax returns filed for the 2016 tax year, 50,219,667—or 33.4 percent--were classified by the Internal Revenue Service as “nontaxable returns,” meaning the people who filed them paid $0 or less in income taxes, according to data published by the Statistics of Income Division of the IRS.

At the same time, 80 percent of all income taxes paid that year were paid by tax return filers who had adjusted gross incomes of $100,000 or more.

Table 2.3 in the Statistics of Income data released by the IRS lists the total number of all returns the IRS estimates it received in a tax year. It also breaks that number down by the number “taxable returns” and the number of “nontaxable returns.”

“A taxable return,” the IRS says, “is a return that has total income tax greater than $0.”

“A nontaxable return, on the other hand, could either have a zero or negative tax liability after accounting for all credits (including refundable credits),” says the IRS.

In 2016, according to Table 2.3, the IRS received 150,272,157 total tax returns. Of these, 100,052,490 were “taxable returns”—meaning the filers paid some income taxes—and 50,219,667 (or 33.4 percent) were “nontaxable returns”—meaning the filers paid $0 or less in income taxes.

In the years from 1986 to 2016, the percentage of tax returns that were “nontaxable” peaked at 41.7 percent in 2009, the year the last recession ended. The lowest percentage of nontaxable returns during that same period was in 1986, when only 18.5 percent of all returns filed with the IRS were from taxpayers who paid $0 or less in income taxes.

In 2009, the peak year for “nontaxable returns,” according to Table 2.3, the IRS estimates it received a total of 140,494,127 tax returns. Of these 81,890,189 were “taxable” and 58,603,939 were “nontaxable.”

In 2016, according to Statistics of Income Table 1.1, the IRS estimates that it collected a total of $1,446,047,984,000 in income taxes. Of that, $1,157,534,262,000—or 80.0 percent-- was paid by filers with adjusted gross incomes of $100,000 or more.

In the years from 1996 to 2016, the percentage of total income taxes paid by filers with adjusted gross incomes of $100,000 or more peaked at 80.5 percent in 2015. In that same period, the lowest percentage of total income taxes paid by filers with adjusted gross incomes of $100,000+ was in 1996, when it was 51.4 percent.

In 1996, the IRS estimates it collected $658,244,750,000 in income taxes and that $338,010,561,000 of that—or 51.4 percent--was paid by filers who had adjusted gross incomes of $100,000 or more.

Even when dependents who filed tax returns are removed from the data, nearly a third of tax filers still paid no income taxes.

“Dependent returns,” says the IRS, “are those filed by individuals who could be claimed as exemptions on another taxpayer’s return (usually that of a parent). In other words, the taxpayer claiming the exemption supplied more than one-half of that person’s support.”

The Tax Cuts and Jobs Act that President Donald Trump signed into law in December 2017 eliminated the personal exemption through at least 2025—but it still applied to taxes paid for 2016.

In 2016, according to Statistics of Income Table 1.7, 9,383,372 dependents filed income tax returns. Of these, 4,148,923 paid some income tax (totaling $3,663,049,000) and 5,234,449 did not pay any income tax.

When dependents and their tax payments are deducted from the national totals for 2016, there were 140,888,785 nondependent returns filed that year. Of these 95,903,567 were taxable returns and 44,985,218—or 31.9 percent of the total 140,888,785--were nontaxable returns, representing filers who paid $0 or less in income taxes.

The 150,272,157 tax returns the IRS estimated were filed for tax year 2016 included 54,042,991 jointly filed by a married couple; 3,068,134 filed by a married person filing separately; 21,659,639 filed by a head of household; 71,410,690 filed by a single person; and 90,703 filed by a surviving spouse.

The business and economic reporting of CNSNews.com is funded in part with a gift made in memory of Dr. Keith C. Wold.

Addendum: In its “Individual Income Tax Returns Complete Report-2016”, the IRS Statistics of Income Division provided a more detailed explanation of the distinction between “taxable and nontaxable returns.” It stated the following: