July 20, 2012 Tax Equity and the Growth in Nonpayers Will Freeland Scott Hodge Will Freeland, Scott Hodge Print this page Subscribe Support our work Download Special Report No. 200: Tax Equity and the Growth in Nonpayers Key Findings In 2010, 41 percent of all tax returns filed had no income tax liability. This represents over 58 million income tax filers. Nonpayers have grown substantially over the last two decades. In 1990, only about 21 percent of returns had no tax liability, about half of what it is today. The expansion of tax credits is the primary driver of the increased number of nonpayers. The budgetary cost of tax credits reached $224 billion in 2010. Though most nonpayers of the income tax are generally low income, the number of nonpayers in middle income categories has grown. The median income of nonpayers has increased by 40% over the last 9 years. The threshold at which a typical married couple with two children will likely be a nonpayer is now $47,000. Introduction Recent debates over the equity of the income tax system have centered chiefly on whether high-income Americans are paying their “fair share” in taxes. There has been less discussion about the growing number of Americans who pay no federal income tax—the so-called nonpayers. Today, the percentage of tax filers who pay no income taxes due to the generous credits and deductions in the tax code has reached levels not seen since the income tax became a “mass tax” in 1940. This trend raises serious concerns about the equity of the U.S. tax system, the fiscal stability of the federal government, and the political implications of disconnecting millions of citizens from the primary means of funding government programs. Recent IRS data reveals that in 2010, over 58 million federal income tax filers had no income tax liability after taking deductions and credits. This amounts to nearly 41 percent of the roughly 143 million tax returns filed that year. Indeed, many of these filers actually had a negative income tax burden because they were eligible for “refundable” tax credits even though they had no income tax liability. These taxpayers did this through the wholly legal and legitimate use of deductions and credits provided in the income tax code. These 58 million nonpayers represent the second highest percentage of nonpayers since 1940, behind only 2009, where nearly 42 percent of income tax filers were nonpayers. By contrast, the low point in the modern era for nonpayers was 1969, when only 16 percent of filers had no income tax liability. As recently as 2000, 25.2 percent of filers paid no income taxes. What is a Nonpayer? A nonpayer is an individual or couple who, after taking advantage of their legal credits and deductions, has zero income tax liability. This is not the same as those who have overpaid their taxes through paycheck withholding and then receive a portion of that withholding back after filing a tax return and receiving a refund. Table 1 demonstrates how a family of four making $45,000 in adjusted gross income can become a nonpayer.[1] After taking a standard deduction of $12,200 and personal exemptions of $14,800 (four times $3,700) the family’s taxable income is reduced to $17,200. This income level puts them in the 10 percent tax bracket, at which they would have a tax liability before credits of $1,720. From this, they are allowed to deduct two tax credits of $1,000 for each of their two children. As the table indicates, these two credits bring their $1,720 liability to zero. However, since the child credits are refundable, the family also receives a check for $280 from the IRS for the remaining value of their two dependent child credits. Some families may also be eligible for other credits such as the child care credit, education credit, or the tax credit for purchasing a hybrid vehicle. Table 1: Married Couple with Two Children: Tax Liability Under 2011 Tax Law Adjusted Gross Income in 2011 $45,000 Minus Standard Deduction -$11,600 Minus Personal Exemption -$14,800 Taxable Income $18,600 Gross Taxes Owed Before Credits $1,940 Minus Two Child Credits -$2,000 Minus EITC -$214 Taxes Owed $0 "Refundable" Credit Received $274 What is the Real Number of Nonpayers? There is frequent confusion about the true number of Americans outside the income tax system. The 58 million figure cited here is strictly the number of Americans who file an income tax return but have no income tax liability after credits and deductions.[2] There are, however, millions of other Americans who earn some income but not enough to be required to file an income tax return. Currently, the threshold for filing a tax return is $9,500 for a single person and $19,000 for a married couple. When these non-filers are added to the number of nonpayers, the total number of Americans outside the income tax system jumps to roughly 50 percent of all households by some estimates. [3] The Historic Growth in the Paying and Nonpaying Population Since the early days of the income tax, the tax code has contained provisions that exempt low-income workers or greatly reduce their tax burden. The standard deduction, personal exemption, dependent exemption, and earned income tax credit are all examples of these types of provisions. Indeed, during the decades following the enactment of the income tax, the filing threshold was set so high that few Americans were even required to file a tax return. Fewer still ended up paying income taxes because of the value of the personal exemption and the deductions allowed for such things as interest, state and local taxes, and business losses. The number of Americans who filed a tax return remained very small all the way up to the start of World War II, during which virtually all Americans were brought into the income tax system (see Figure 1). In the early years of the income tax, the personal exemption for taxable income was very high relative to the majority of incomes in the nation. For example, in 1916, the average employee income was $705 in current dollars,[4] yet the personal exemption was set at $3,000 for single filers and $4,000 for married filers.[5] In today’s dollars, this equates to about $62,000 for a single individual and roughly $82,500 for a married couple. Only about 1.1 percent of working age Americans even filed a tax return[6] and roughly 17 percent of the 437,036 Americans who did file a tax return had no income tax liability. In 1917, the personal exemption dropped to $1000 for single filers and $2,000 for married filers. This increased the number of filers to nearly 3.5 million. At the same time, however, lawmakers enacted a $200 per dependent exemption, which helped increase the percentage of nonpayers to 22 percent. During World War I, the percentage of Americans who were required to file a tax return climbed to as high as 17 percent. After the war, the percentage of filers fell to below 10 percent and remained at roughly that level through the mid-1930s. During the post-World War I period, the value of the personal exemption was increased, which in turn boosted the percentage of nonpayers to over 56 percent in 1934—even though the top marginal income tax rate hit 63 percent that year. The years leading up to the start of World War II changed the income tax from a tax on the relatively wealthy to a tax on the masses. In 1939, the personal exemption stood at $1,000 for single filers (equal to the income level required to file a tax return) and $2,500 for married filers. In today’s dollars, this equates to roughly $16,200 for singles and nearly $40,500 for married couples. That year, less than 14 percent of working adults filed a tax return.[7] By 1942, the value of the personal exemption dropped to $500 for singles and $1,000 for married couples. As a result, the number of tax returns jumped from 7.7 million in 1939 to 36.7 million in 1942. In 1945, the number of tax filers approached 50 million while the percentage of Americans who filed an income tax return neared 85 percent. By contrast, the percentage of nonpayers fell to 10 percent in 1945 (see Table 3 at the end of this Special Report for each year’s data). Since the end of World War II, the percentage of working Americans who file a return has remained very high—typically between 85 percent and 95 percent—but the percentage of nonpayers has fluctuated wildly over the decades (see Figure 2). Causes of the Growth in Nonpayers In the modern era, the percentage of nonpayers began to climb significantly after the Tax Reform Act of 1986, which increased the value of the standard deduction and nearly doubled the size of the personal exemption. Indeed, between 1986 and 1989, the personal exemption for singles grew from $1,080 to $2,000, and for married couples it grew from $2,160 to $4,000. As a result, the percentage of filers who became nonpayers jumped from 18.5 percent to 20.5 percent. In the 25 years since then, the percentage of nonpayers has doubled thanks to the expansion of the Earned Income Tax Credit (EITC) and the enactment of a plethora of new credits, such as the child credit and the more recent Making Work Pay Credit. With respect to the EITC, the Omnibus Budget Reconciliation Act of 1993 increased number of taxpayers qualifying for the EITC as well as the value of the credit.[8] By 1995, the percentage of nonpayers reached 24.5 percent, nearly 29 million tax filers. This growth accelerated following the enactment of the Taxpayer Relief Act of 1997, which created a $500 per child tax credit for families earning less than $110,000.[9] By 2000, the number of nonpayers topped 32.5 million, or 25.2 percent of all filers. The child credit was then expanded by the Economic Growth and Tax Relief Reconciliation Act of 2001 which increased the child credit at a graduated rate from $600 in 2001 to $1,000 in 2010. The Jobs and Growth Tax Relief Reconciliation Act of 2003 then more rapidly increased this amount to $1,000 for 2003 and 2004. The $1,000 credit was further extended from 2005 through 2010 by the Working Families Tax Relief Act. The EITC was also subsequently expanded multiple times throughout the late 1990s and 2000s. These changes boosted the number of nonpayers dramatically during that period. Between 2000 and 2006, the number of nonpayers grew by 13 million, or 40 percent, from 32.5 million to 45.6 million. In 2006, more than one-third of all Americans who filed a tax return paid no income taxes after benefiting from their credits and deductions. More recently, the new tax credits introduced in 2008 and 2009 by both the Bush and Obama administrations in response to the recession have accelerated the growth in nonpayers. These include the Making-Work Pay credit, the American Opportunity tax credit for education expenses, the first time homebuyer credit, and the alternative motor vehicle credit. These new credits boosted the number of nonpayers by another 28 percent, nearly 13 million, between 2006 and 2010–thus increasing the percentage of nonpayers from one in three tax filers to more than two in five. The Growing Cost of Tax Credits and Refundable Credits As the number of nonpayers has grown, so too has the number of tax filers who receive cash payments because of the expansion of refundable credits. The combined budgetary cost of basic tax credits (non-refundable credits that offset only a filer’s income tax liability) and refundable tax credits (the cash payments) has soared over the past few years. Figure 3 details the growing cost of both types of tax credits over the past two decades.[10] In 1990, the combined value of these credits was roughly $20 billion after adjusting for inflation. In today’s dollars, the budgetary cost of basic tax credits was around $8 billion, while the refundable credits under the EITC totaled $12 billion. By 2000, basic tax credits had a budgetary cost of $46.5 billion, in 2012 dollars. The child credit was by far the biggest portion of this at more than $25 billion after adjusting for inflation. Some 26 million taxpayers took advantage of the child credit that year. Refundable credits amounted to $43.4 billion in 2000, nearly all of which was attributed to the EITC. A decade later, the combined budgetary cost of both the basic and refundable tax credits reached a remarkable $224 billion in 2010. This was larger than the budgetary cost of the tax exclusion for employer-provided health insurance that year, the largest tax expenditure in the federal budget. As of 2010, refundable cash payments to nonpayers comprised over half ($120 billion) of the total cost of tax credits. The largest refundable credits in 2010 were the EITC ($59 billion), the child credit ($27.5 billion), and the Making Work Pay credit ($16 billion). The budgetary cost of basic tax credits in 2010 was $104 billion. Roughly two-thirds of these total costs were comprised of the Making Work Pay credit and the Child Credit. Another 24 percent of these costs were attributable to the foreign tax credit and the education credit. Nonpayers Due to Economic Factors In addition to the introduction of new tax credits, the post-2007 increase in nonpayers could also be caused in part by labor market effects of the recession. It is possible that some workers were made eligible for the Making Work Pay credit, for example, because they lost their jobs midyear, accepted lower wages at their current job, or settled for a lower paying job after losing their job as a result of the recession. However, it is difficult to parse out the magnitudes of causes for the growth in nonpayers between the recession and the new credits. Tax Credits Also Cost Taxpayers These credits have a larger impact than their pure monetary cost. Some 73 percent of those claiming the EITC had to use a tax preparer according to the 2010 annual report of the IRS’s National Taxpayer Advocate.[11] That rate is 62 percent for all taxpayers. The high rate at which taxpayers must seek the assistance of a tax preparer is indicative of the complexity of the tax code and the extent to which that complexity creates a substantial compliance cost. That same report by the National Taxpayer Advocate found that complexity is a contributing factor to the estimated $10 billion to $12 billion in erroneous overpayments made to those claiming the credit in 2006. Those overpayments represent almost a quarter of the total $44 billion in EITC claims that year. Moreover, these costs do not begin to estimate potential economic distortion and deadweight loss, resulting in credits that incentivize certain types of social and economic behavior. More Middle Class Taxpayers Becoming Nonpayers Though most nonpayers are low income by conventional standards, the income level at which one can become a nonpayer has crept upward over the last decade. Table 2 details the percentage of tax filers with no income tax burden by income group.[12] Income brackets for this table are not adjusted for inflation.[13] For example, in 2001, only 60 percent of tax filers making between $7,000 and $9,000 of income were nonpayers. By 2005, the share of nonpayers in this income group had grown to 74 percent, and by 2009 had jumped again to 84 percent. Similarly, for those making between $25,000 and $30,000 a year, the share of nonpayers was 18 percent in 2001 but then increased to 33 percent by 2005 and 47 percent by 2009. Even for those in middle to upper-middle income categories, the share of nonpayers has substantially increased. For those making between $50,000 and $75,000, only 1 percent were nonpayers in 2001. By 2005, that figure was almost 5 percent, and by 2009 had hit 12 percent. For those making between $75,000 and $100,000 the share was 0.3 percent in 2001, a little over 1 percent in 2005, and over 4 percent by 2009. In 2001, the share of nonpayers making over $50,000 (inflation adjusted to 2009 dollars) is roughly only 1 percent of tax filers or 2 percent of total nonpayers. By 2009, the share of nonpayers making over $50,000 was 3.8 percent of tax filers and 4.5 percent of total nonpayers. The threshold at which the typical married couple with two children will likely be a nonpayer given the standard deduction, personal exemption, and only two dependent child credits is now roughly $47,000.[14] Table 2: Percentage of Tax Filers who were Nonpayers by Income Group 2001 2002 2003 2004 2005 2006 2007 2008 2009 Total 27.2 30.1 31.8 32.6 32.6 33.0 32.7 36.4 41.7 No adjusted gross income 99.6 99.7 99.8 99.8 99.7 99.8 99.7 99.9 99.9 $1 under $1,000 93.5 95.4 95.8 95.2 95.8 97.6 98.4 99.9 99.7 $1,000 under $3,000 87.4 91.2 92.6 92.3 90.8 90.1 88.9 94.8 96.0 $3,000 under $5,000 85.5 89.9 92.1 94.1 94.0 93.4 93.2 94.8 97.2 $5,000 under $7,000 69.0 70.4 72.3 70.1 70.5 70.9 73.6 78.4 84.3 $7,000 under $9,000 60.2 68.3 70.6 72.2 73.5 75.7 76.8 80.7 83.6 $9,000 under $11,000 46.6 51.0 49.8 53.4 54.1 56.5 57.8 71.8 86.8 $11,000 under $13,000 46.4 47.8 49.6 50.8 51.0 50.6 50.9 62.8 83.6 $13,000 under $15,000 42.8 49.9 48.7 51.5 50.6 51.3 52.0 62.0 65.8 $15,000 under $17,000 37.6 39.7 47.7 49.1 49.4 50.4 51.0 54.9 60.1 $17,000 under $19,000 36.3 38.4 43.1 42.8 45.3 47.4 48.0 50.9 55.6 $19,000 under $22,000 33.4 37.6 39.8 41.3 40.9 42.2 42.7 47.2 57.3 $22,000 under $25,000 26.8 35.4 36.3 38.1 39.2 40.2 40.8 44.2 51.4 $25,000 under $30,000 17.6 23.8 28.7 31.3 33.0 34.0 36.2 39.1 47.0 $30,000 under $40,000 7.2 10.9 15.1 18.9 20.3 21.2 22.2 26.1 33.4 $40,000 under $50,000 2.9 4.9 7.5 10.4 12.2 12.7 12.6 16.0 22.4 $50,000 under $75,000 1.0 1.3 2.0 3.9 4.7 5.5 5.8 8.0 12.0 $75,000 under $100,000 0.3 0.4 0.6 1.0 1.2 1.4 1.6 2.5 4.1 $100,000 under $200,000 0.1 0.2 0.2 0.2 0.4 0.4 0.6 0.8 1.0 $200,000 under $500,000 0.1 0.1 0.1 0.1 0.2 0.2 0.3 0.5 0.5 $500,000 under $1,000,000 0.2 0.1 0.1 0.1 0.2 0.2 0.3 0.6 0.5 $1,000,000 under $1,500,000 0.2 0.2 0.1 0.1 0.2 0.2 0.2 0.6 0.5 $1,500,000 under $2,000,000 0.2 0.2 0.1 0.1 0.2 0.2 0.3 0.7 0.5 $2,000,000 under $5,000,000 0.2 0.1 0.1 0.1 0.2 0.2 0.3 0.7 0.5 $5,000,000 under $10,000,000 0.3 0.2 0.1 0.1 0.2 0.2 0.3 0.7 0.4 $10,000,000 or more 0.2 0.2 0.2 0.1 0.3 0.2 0.2 0.8 0.6 Although many low-income nonpayers do pay other federal taxes such as payroll and excise taxes, the value of refundable credits is getting so large as to offset these other tax costs. For example, the Joint Committee on taxation estimated that in 2009, the value of refundable credits exceeded the employee share of payroll taxes for 23 million tax filers and exceeded the employer's share of payroll taxes for 15.5 million filers.[15] What this means is that these Americans are not just being absolved from contributing to the basic cost of government, but they are also avoiding contributing to the cost of their own retirement as well. Conclusion Since the first income tax code was enacted in 1913, the tax system has protected certain classes of Americans from paying the income tax. Starting in about 1940, however, the federal income tax changed from being a tax largely on high-income workers, to a mass tax on virtually all working Americans. But thanks to the rampant growth in tax credits over the past two decades or so, the federal income tax is reverting to its original composition – a tax largely on high-income Americans. 2009 and 2010 saw a record number of tax filers pay no income taxes because of the generous credits and deductions in the code. More than one out of every four tax filers no longer contributes to the basic cost of government because of these credits and deductions. In addition, millions of these nonpayers also received cash back through refundable credits, such as the EITC, child credit, and Making Work Pay credit. These credits not only have a major budgetary cost – both in terms of the lost revenue and the outlay cost for the refundable portion – they undermine the financial stability of the government by narrowing the tax base and disconnect people from the basic cost of government. The latter consequence is what Noble Laureate James Buchanan calls “fiscal illusion.”[16] When people perceive government to be cheaper than it really is, they will demand ever more of it because they either don’t have a true sense of its cost or they assume that others will bear the cost. As lawmakers debate the equity of the current tax system, the conversation cannot be solely about the tax burden borne by the rich. It must include an honest discussion about how many Americans should we allow to be nonpayers and, thus, held harmless from the basic cost of government. Table 3: Federal Individual Income Tax Returns with Zero or Negative Tax Liability Year Number of Returns Filed Returns with Zero or Negative Tax Liability Percentage of Returns with Zero or Negative Tax Liability 1916 437,036 74,096 17.0% 1917 3,472,890 765,056 22.0% 1918 4,425,114 1,032,251 23.3% 1919 5,332,760 1,101,579 20.7% 1920 7,259,944 1,741,634 24.0% 1921 6,662,176 3,072,191 46.1% 1922 6,787,481 3,106,232 45.8% 1923 7,689,321 3,428,200 44.6% 1924 7,369,788 2,880,090 39.1% 1925 4,171,051 1,669,885 40.0% 1926 4,138,092 1,667,102 40.3% 1927 4,101,547 1,660,606 40.5% 1928 4,070,851 1,547,788 38.0% 1929 4,044,327 1,586,278 39.2% 1930 3,707,509 1,669,864 45.0% 1931 3,225,924 1,700,378 52.7% 1932 3,877,430 1,941,335 50.1% 1933 3,723,558 1,975,818 53.1% 1934 4,094,420 2,298,500 56.1% 1935 4,575,012 2,464,122 53.9% 1936 5,413,499 2,552,391 47.1% 1937 6,350,148 2,978,705 46.9% 1938 6,251,009 3,255,345 52.1% 1939 7,715,660 4,041,758 52.4% 1940 14,710,725 7,273,464 49.4% 1941 25,964,801 8,207,709 31.6% 1942 36,700,729 8,819,059 24.0% 1943 43,819,194 3,283,854 7.5% 1944 47,111,495 4,757,027 10.1% 1945 49,932,783 7,282,281 14.6% 1946 52,816,547 14,900,851 28.2% 1947 55,099,008 13,520,484 24.5% 1948 52,072,006 15,660,758 30.1% 1949 51,814,124 16,185,829 31.2% 1950 53,060,098 14,873,416 28.0% 1951 55,447,009 12,798,399 23.1% 1952 56,528,817 12,652,544 22.4% 1953 57,838,184 12,615,033 21.8% 1954 56,747,008 14,113,948 24.9% 1955 58,250,188 13,561,123 23.3% 1956 59,197,004 12,938,358 21.9% 1957 59,825,121 12,959,806 21.7% 1958 59,085,182 13,433,048 22.7% 1959 60,271,297 12,774,384 21.2% 1960 61,027,931 12,966,946 21.2% 1961 61,499,420 12,916,655 21.0% 1962 62,712,386 12,620,023 20.1% 1963 63,943,236 12,620,015 19.7% 1964 65,375,601 14,069,263 21.5% 1965 67,596,300 13,895,506 20.6% 1966 70,160,425 13,451,349 19.2% 1967 71,651,909 12,978,971 18.1% 1968 73,728,708 12,440,000 16.9% 1969 75,834,388 12,112,994 16.0% 1970 74,279,831 14,962,460 20.1% 1971 74,576,407 14,660,035 19.7% 1972 77,572,720 16,703,713 21.5% 1973 80,692,587 16,425,425 20.4% 1974 83,340,190 16,005,423 19.2% 1975 82,229,332 20,738,595 25.2% 1976 84,670,389 20,249,022 23.9% 1977 86,634,640 22,253,502 25.7% 1978 89,771,551 21,083,246 23.5% 1979 92,964,302 20,999,319 22.6% 1980 93,902,469 19,996,225 21.3% 1981 95,396,123 18,671,399 19.6% 1982 95,337,432 18,302,132 19.2% 1983 96,321,310 18,304,987 19.0% 1984 99,438,708 17,799,199 17.9% 1985 101,660,287 18,813,867 18.5% 1986 103,045,170 19,077,757 18.5% 1987 106,996,270 20,272,474 18.9% 1988 109,708,280 22,572,948 20.6% 1989 112,135,673 22,957,318 20.5% 1990 113,717,138 23,854,704 21.0% 1991 114,730,123 25,996,536 22.7% 1992 113,604,503 26,872,557 23.7% 1993 114,601,819 28,166,452 24.6% 1994 115,943,131 28,323,685 24.4% 1995 118,218,327 28,965,338 24.5% 1996 120,351,208 29,421,858 24.4% 1997 122,421,991 28,950,791 23.6% 1998 124,770,662 31,722,764 25.4% 1999 127,075,145 32,529,065 25.6% 2000 129,373,500 32,555,897 25.2% 2001 130,255,237 35,491,707 27.2% 2002 130,076,443 39,112,547 30.1% 2003 130,423,626 41,501,722 31.8% 2004 132,226,042 43,124,108 32.6% 2005 134,372,678 43,802,114 32.6% 2006 138,394,754 45,681,047 33.0% 2007 143,030,461 46,655,760 32.6% 2008 142,450,569 51,790,465 36.4% 2009 140,494,127 58,603,938 41.7% 2010 142,856,282 58,390,289 40.9% Source: Tax Foundation calculations based on IRS Data Note: 2010 numbers are based on preliminary data represent estimates of income and tax items based on a sample of individual income tax returns filed between January and late September of a given processing year. These returns are then weighted to represent a full year of taxpayer reporting. In general, some of the returns processed during the remainder of the year may have somewhat different characteristics compared to these earlier ones. Therefore, these preliminary data are best utilized by comparisons made to the preliminary estimates from the prior year. When available, the estimates from the Complete Year Data should be used in place of the primary data. Errata: An earlier version of this report used a sample tax calculation that was mislabeled as using 2011 tax law when it actually used Tax Foundation projections for 2013. The calculation has changed to reflect 2011 parameters. [1] Hypothetical tax return generated using Tax Foundation’s MyTaxBurden tax policy calculator. This hypothetical return can be viewed or modified at: http://goo.gl/Oj8bB . [2] Internal Revenue Service, Tax Year 2008 Preliminary Data: Selected Income and Tax Items by Size of Adjusted Gross Income, Table 1: Individual Income Tax Returns. [3] See Tax Policy Center, Baseline Distribution of Tax Units with No Tax Liability, Current Law, 2004-2011, Table T11-0173 (June 14, 2011), http://www.taxpolicycenter.org/numbers/displayatab.cfm?Docid=3054&DocTypeID=7. See also Memorandum from the Joint Committee on Taxation, Information on Income Tax Liability for Tax Year 2009 (Apr. 29, 2011), http://finance.senate.gov/newsroom/ranking/download/?id=9fe27e9f-a5e0-4010-8461-ffc00b5c00ef. [4] U.S. Census Bureau, Historical Statistics of the United States: Colonial Times to 1970, Average Annual Earnings of Employees: 1900 to 1970. [5] Tax Foundation, Federal Individual Income Tax: Exemptions and Treatment of Dividends, 1913-2006 (Dec. 12, 2006), https://taxfoundation.org/article/federal-individual-income-tax-exemptions-and-treatment-dividends-1913-2006. [6] Thomas Piketty & Emmanuel Saez, Income Inequality in the United States, 1913-2002 (Nov. 2004), Table A0, http://emlab.berkeley.edu/users/saez/piketty-saezOUP04US.pdf. The estimate is based on the percentage of “tax units” who filed. Tax units are roughly the number of working age, single and married, adults who could be considered the universe of possible taxpayers. [7] Ibid. [8] The EITC was originally enacted in 1975 by the Tax Reduction Act of 1975. [9] The child credit was phased out over a $20,000 income band—$50 for every $1,000 of income over $110,000. As a result, a family of four could get some portion of the credit up to $150,000. [10] Internal Revenue Service, Statistics of Income, Table A. Selected Income and Tax Items for Tax Years, 1990-2009, in Current and Constant 1990 Dollars, http://www.irs.gov/pub/irs-soi/09intba.xls. [11] National Taxpayer Advocate, Report to Congress: Fiscal 2010 Objectives, June 30, 2009, http://www.irs.gov/pub/irs-utl/fy2010_objectivesreport.pdf. [12] Internal Revenue Service, Statistics of Income, Table A. Selected Income and Tax Items for Tax Years, 1990-2009, in Current and Constant 1990 Dollars, http://www.irs.gov/pub/irs-soi/09intba.xls. [13] The IRS has not published a time series of nonpayers by income level that is inflation adjusted, making Table 2 the best data available. This makes comparing year-over-year changes imprecise, but the growth of nonpayers at higher income levels is still demonstrated by the table. [14] Hypothetical tax return generated using Tax Foundation’s MyTaxBurden tax policy calculator. This hypothetical return can be viewed or modified at: http://goo.gl/YvGRj. [15] Joint Committee on Taxation, Letter to Representative Dave Camp and Senator Kent Conrad, May 28, 2010. [16] James M. Buchanan, Public Finance in Democratic Process: Fiscal Institutions and Individual Choice, http://www.econlib.org/library/Buchanan/buchCv4c10.html. Topics Center for Federal Tax Policy Individual Income and Payroll Taxes Individual Tax Expenditures, Credits, and Deductions Research Tags Putting a Face on America's Tax Returns