Table 1
Summary of Federal Individual Income Tax Data, 2006
(Updated July 2008)

 

Number of Returns with Positive AGI

AGI ($ millions)

Income Taxes Paid ($ millions)

Group's Share of Total AGI

Group's Share of Income Taxes

Income Split Point

Average Tax Rate

All Taxpayers

135,719,160

$8,122,040

$1,023,739

100%

100%

-

12.60%

Top 1%

1,357,192

$1,791,886

$408,369

22.06%

39.89%

> $388,806

22.79%

Top 2-5%

5,428,766

$1,185,828

$207,311

14.60%

20.25%

 


17.48%

Top 5%

6,785,958

$2,977,714

$615,680

36.66%

60.14%

> $153,542

20.68%

Top 6-10%

6,785,958

$865,430

$109,060

10.66%

10.65%

 


12.60%

Top 10%

13,571,916

$3,843,144

$724,740

47.32%

70.79%

 

> $108,904

18.86%

Top 11-25%

20,357,874

$1,692,686

$158,413

20.84%

15.47%

 

9.36%

Top 25%

33,929,790

$5,535,830

$883,153

68.16%

86.27%

> $64,702

15.95%

Top 26-50%

33,929,790

$1,569,769

$110,023

19.33%

10.75%

 


7.01%

Top 50%

67,859,580

$7,105,599

$993,176

87.49%

97.01%

> $31,987

13.98%

Bottom 50%

67,859,580

$1,016,441

$30,563

12.51%

2.99%

< $31,987

3.01%

Source: Internal Revenue Service, http://www.irs.gov/taxstats/indtaxstats/article/0,,id=133521,00.html ("Individual Income Tax Returns with Positive Adjusted Gross Income (AGI) Returns Classified by Tax Percentile - Early Release")

Table 2
Number of Federal Individual Income Tax Returns Filed with Positive AGI 1980-2006
(In thousands)

Year

Total

Top 1%

Top 2-5%

Top 5%

Top 6-10%

Top 10%

Top 11-25%

Top 25%

Top 26-50%

Top 50%

Bottom 50%

1980

93,239

932

3,730

4,662

4,662

9,324

13,986

23,310

23,310

46,619

46,619

1981

94,587

946

3,783

4,729

4,729

9,459

14,188

23,647

23,647

47,293

47,293

1982

94,426

944

3,777

4,721

4,721

9,443

14,164

23,607

23,607

47,213

47,213

1983

95,331

953

3,813

4,767

4,767

9,533

14,300

23,833

23,833

47,665

47,665

1984

98,436

984

3,937

4,922

4,922

9,844

14,765

24,609

24,609

49,218

49,219

1985

100,625

1,006

4,025

5,031

5,031

10,063

15,094

25,156

25,156

50,313

50,313

1986

102,088

1,021

4,084

5,104

5,104

10,209

15,313

25,522

25,522

51,044

51,044

1987

106,155

1,062

4,246

5,308

5,308

10,615

15,923

26,539

26,539

53,077

53,077

1988

108,873

1,089

4,355

5,444

5,444

10,887

16,331

27,218

27,218

54,436

54,436

1989

111,313

1,113

4,453

5,566

5,566

11,131

16,697

27,828

27,828

55,656

55,656

1990

112,812

1,128

4,512

5,641

5,641

11,281

16,922

28,203

28,203

56,406

56,406

1991

113,804

1,138

4,552

5,690

5,690

11,380

17,071

28,451

28,451

56,902

56,902

1992

112,653

1,127

4,506

5,633

5,633

11,265

16,898

28,163

28,163

56,326

56,326

1993

113,681

1,137

4,547

5,684

5,684

11,368

17,052

28,420

28,420

56,841

56,841

1994

114,990

1,150

4,600

5,749

5,749

11,499

17,248

28,747

28,747

57,495

57,495

1995

117,274

1,173

4,691

5,864

5,864

11,727

17,591

29,319

29,319

58,637

58,637

1996

119,442

1,194

4,778

5,972

5,972

11,944

17,916

29,860

29,860

59,721

59,721

1997

121,503

1,215

4,860

6,075

6,075

12,150

18,225

30,376

30,376

60,752

60,752

1998

123,776

1,238

4,951

6,189

6,189

12,378

18,566

30,944

30,944

61,888

61,888

1999

126,009

1,260

5,040

6,300

6,300

12,601

18,901

31,502

31,502

63,004

63,004

2000

128,227

1,282

5,129

6,411

6,411

12,823

19,234

32,057

32,057

64,114

64,114

2001

128,817

1,288

5,153

6,441

6,441

12,882

19,323

32,204

32,204

64,409

64,409

2002

128,324

1,283

5,133

6,416

6,416

12,832

19,249

32,081

32,081

64,162

64,162

2003

128,610

1,286

5,144

6,430

6,430

12,861

19,291

32,152

32,152

64,305

64,305

2004

130,371

1,304

5,215

6,519

6,519

13,037

19,556

32,593

32,593

65,186

65,186

2005

132,612

1,326

5,304

6,631

6,631

13,261

19,892

33,153

33,153

66,306

66,306

2006

135,719

1,357

5,429

6,786

6,786

13,572

20,358

33,930

33,930

67,860

67,860

Source: Internal Revenue Service

Table 3
Adjusted Gross Income of Taxpayers in Various Income Brackets, 1980-2006
($ Billions)

Year

Total

Top 1%

Top 2-5%

Top 5%

Top 6-10%

Top 10%

Top 11-25%

Top 25%

Top 26-50%

Top 50%

Bottom 50%

1980

$1,627

$138

$204

$342

$181

$523

$400

$922

$417

$1,339

$288

1981

$1,791

$149

$223

$372

$201

$573

$442

$1,015

$458

$1,473

$318

1982

$1,876

$167

$231

$398

$207

$605

$460

$1,065

$478

$1,544

$332

1983

$1,970

$183

$245

$428

$217

$646

$481

$1,127

$498

$1,625

$344

1984

$2,173

$210

$272

$482

$240

$723

$528

$1,251

$543

$1,794

$379

1985

$2,344

$235

$296

$531

$260

$791

$567

$1,359

$580

$1,939

$405

1986

$2,524

$285

$323

$608

$278

$887

$604

$1,490

$613

$2,104

$421

Tax Reform Act of 1986 changed the definition of AGI, so data above and below this line not strictly comparable

1987

$2,814

$347

$376

$722

$316

$1,038

$671

$1,709

$664

$2,374

$440

1988

$3,124

$474

$417

$891

$342

$1,233

$718

$1,951

$707

$2,658

$466

1989

$3,299

$468

$450

$918

$368

$1,287

$768

$2,054

$751

$2,805

$494

1990

$3,451

$483

$470

$953

$385

$1,338

$806

$2,144

$788

$2,933

$519

1991

$3,516

$457

$487

$943

$400

$1,343

$832

$2,175

$809

$2,984

$532

1992

$3,681

$524

$508

$1,031

$413

$1,444

$856

$2,299

$832

$3,131

$549

1993

$3,776

$521

$528

$1,048

$426

$1,474

$883

$2,358

$854

$3,212

$563

1994

$3,961

$547

$556

$1,103

$449

$1,552

$929

$2,481

$890

$3,371

$590

1995

$4,245

$620

$603

$1,223

$482

$1,705

$985

$2,690

$938

$3,628

$617

1996

$4,591

$737

$657

$1,394

$515

$1,909

$1,043

$2,953

$992

$3,944

$646

1997

$5,023

$873

$724

$1,597

$554

$2,151

$1,116

$3,268

$1,060

$4,328

$695

1998

$5,469

$1,010

$786

$1,797

$597

$2,394

$1,196

$3,590

$1,132

$4,721

$748

1999

$5,909

$1,153

$859

$2,012

$641

$2,653

$1,274

$3,927

$1,199

$5,126

$783

2000

$6,424

$1,337

$931

$2,267

$688

$2,955

$1,358

$4,314

$1,276

$5,590

$834

2001

$6,241

$1,097

$899

$1,996

$694

$2,691

$1,380

$4,071

$1,308

$5,379

$862

2002

$6,114

$986

$882

$1,868

$686

$2,553

$1,382

$3,936

$1,309

$5,244

$870

2003

$6,288

$1,055

$906

$1,961

$703

$2,663

$1,415

$4,078

1,330

$5,408

$880

2004

$6,875

$1,306

$993

$2,300

$750

$3,049

$1,497

$4,546

$1,406

$5,953

$922

2005

$7,508

$1,592

$1,092

$2,684

$803

$3,487

$1,582

$5,069

$1,475

$6,545

$963

2006

$8,122

$1,792

$1,186

$2,978

$865

$3,843

$1,693

$5,536

$1,570

$7,106

$1,016

Source: Internal Revenue Service

Table 4
Total Income Tax after Credits, 1980-2006
($ Billions)

Year

Total

Top 1%

Top 2-5%

Top 5%

Top 6-10%

Top 10%

Top 11-25%

Top 25%

Top 26-50%

Top 50%

Bottom 50%

1980

249

$47

$44

$92

$31

$123

$59

$182

$50

$232

$18

1981

$282

$50

$49

$99

$36

$135

$69

$204

$57

$261

$21

1982

$276

$53

$47

$100

$34

$134

$66

$200

$56

$256

$20

1983

$272

$55

$46

$101

$34

$135

$64

$199

$54

$252

$19

1984

$297

$63

$50

$113

$37

$150

$68

$219

$57

$276

$22

1985

$322

$70

$55

$125

$41

$166

$73

$238

$60

$299

$23

1986

$367

$94

$62

$156

$44

$201

$78

$279

$64

$343

$24

1987

$369

$92

$68

$160

$46

$205

$79

$284

$63

$347

$22

1988

$413

$114

$74

$188

$48

$236

$85

$321

$68

$389

$24

1989

$433

$109

$81

$190

$51

$241

$93

$334

$73

$408

$25

1990

$447

$112

$83

$195

$52

$248

$97

$344

$77

$421

$26

1991

$448

$111

$83

$194

$56

$250

$96

$347

$77

$424

$25

1992

$476

$131

$87

$218

$58

$276

$97

$374

$78

$452

$24

1993

$503

$146

$92

$238

$60

$298

$101

$399

$80

$479

$24

1994

$535

$154

$100

$254

$64

$318

$108

$425

$84

$509

$25

1995

$588

$178

$110

$288

$70

$357

$115

$473

$88

$561

$27

1996

$658

$213

$123

$335

$76

$411

$124

$535

$95

$630

$28

1997

$727

$241

$136

$377

$82

$460

$134

$594

$102

$696

$31

1998

$788

$274

$150

$425

$88

$513

$139

$652

$103

$755

$33

1999

$877

$317

$169

$486

$97

$583

$150

$733

$109

$842

$35

2000

$981

$367

$187

$554

$106

$660

$164

$824

$118

$942

$38

2001

$888

$301

$172

$473

$103

$576

$160

$736

$117

$853

$35

2002

$797

$269

$160

$429

$95

$524

$145

$669

$100

$769

$28

2003

$748

$256

$150

$407

$86

$492

$135

$627

$95

$722

$26

2004

$832

$307

$168

$475

$92

$567

$139

$706

$99

$804

$27

2005

$935

$368

$190

$558

$99

$657

$147

$804

$102

$906

$29

2006

$1,024

$408

$207

$616

$109

$725

$158

$883

$110

$993

$31

Source: Internal Revenue Service

Table 5
Adjusted Gross Income Shares, 1980-2006
(Percent of total AGI earned by each group)

Year

Total

Top 1%

Top 2-5%

Top 5%

Top 6-10%

Top 10%

Top 11-25%

Top 25%

Top 26-50%

Top 50%

Bottom 50%

1980

100%

8.46%

12.55%

21.01%

11.12%

32.13%

24.57%

56.70%

25.62%

82.32%

17.6800%

1981

100%

8.30%

12.48%

20.78%

11.20%

31.98%

24.69%

56.67%

25.58%

82.25%

17.7500%

1982

100%

8.91%

12.32%

21.23%

11.03%

32.26%

24.53%

56.79%

25.50%

82.29%

17.7100%

1983

100%

9.29%

12.45%

21.74%

11.04%

32.78%

24.44%

57.22%

25.30%

82.52%

17.4800%

1984

100%

9.66%

12.53%

22.19%

11.06%

33.25%

24.31%

57.56%

25.00%

82.56%

17.4400%

1985

100%

10.03%

12.64%

22.67%

11.10%

33.77%

24.20%

57.97%

24.77%

82.74%

17.2600%

1986

100%

11.30%

12.81%

24.11%

11.01%

35.12%

23.92%

59.04%

24.30%

83.34%

16.6600%

Tax Reform Act of 1986 changed the definition of AGI, so data above and below this line not strictly comparable

1987

100%

12.32%

13.35%

25.67%

11.23%

36.90%

23.85%

60.75%

23.62%

84.37%

15.6300%

1988

100%

15.16%

13.35%

28.51%

10.94%

39.45%

22.99%

62.44%

22.63%

85.07%

14.9300%

1989

100%

14.19%

13.65%

27.84%

11.16%

39.00%

23.28%

62.28%

22.76%

85.04%

14.9600%

1990

100%

14.00%

13.62%

27.62%

11.15%

38.77%

23.36%

62.13%

22.84%

84.97%

15.0300%

1991

100%

12.99%

13.84%

26.83%

11.37%

38.20%

23.65%

61.85%

23.02%

84.87%

15.1300%

1992

100%

14.23%

13.78%

28.01%

11.22%

39.23%

23.24%

62.47%

22.61%

85.08%

14.9200%

1993

100%

13.79%

13.97%

27.76%

11.29%

39.05%

23.40%

62.45%

22.63%

85.08%

14.9200%

1994

100%

13.80%

14.05%

27.85%

11.34%

39.19%

23.45%

62.64%

22.47%

85.11%

14.8900%

1995

100%

14.60%

14.21%

28.81%

11.35%

40.16%

23.21%

63.37%

22.09%

85.46%

14.5400%

1996

100%

16.04%

14.32%

30.36%

11.23%

41.59%

22.73%

64.32%

21.60%

85.92%

14.0800%

1997

100%

17.38%

14.41%

31.79%

11.04%

42.83%

22.22%

65.05%

21.11%

86.16%

13.8400%

1998

100%

18.47%

14.38%

32.85%

10.92%

43.77%

21.86%

65.63%

20.70%

86.33%

13.6700%

1999

100%

19.51%

14.53%

34.04%

10.85%

44.89%

21.57%

66.46%

20.29%

86.75%

13.2500%

2000

100%

20.81%

14.49%

35.30%

10.71%

46.01%

21.14%

67.15%

19.86%

87.01%

12.9900%

2001

100%

17.53%

14.46%

31.99%

11.12%

43.11%

22.12%

65.23%

20.96%

86.19%

13.8100%

2002

100%

16.12%

14.43%

30.55%

11.22%

41.77%

22.60%

64.37%

21.40%

85.77%

14.2300%

2003

100%

16.77%

14.41%

31.18%

11.18%

42.36%

22.50%

64.86%

21.15%

86.01%

13.9900%

2004

100%

19.00%

14.45%

33.45%

10.90%

44.35%

21.78%

66.13%

20.46%

86.58%

13.4156%

2005

100%

21.20%

14.55%

35.75%

10.70%

46.44%

21.08%

67.52%

19.65%

87.17%

12.8282%

2006

100%

22.06%

14.60%

36.66%

10.66%

47.32%

20.84%

68.16%

19.33%

87.49%

12.51%

Source: Internal Revenue Service

Table 6
Total Income Tax Shares, 1980-2006
(Percent of federal income tax paid by each group)

Year

Total

Top 1%

Top 2-5%

Top 5%

Top 6-10%

Top 10%

Top 11-25%

Top 25%

Top 26-50%

Top 50%

Bottom 50%

1980

100%

19.05%

17.79%

36.84%

12.44%

49.28%

23.74%

73.02%

19.93%

92.95%

7.0500%

1981

100%

17.58%

17.48%

35.06%

12.90%

47.96%

24.33%

72.29%

20.26%

92.55%

7.4500%

1982

100%

19.03%

17.10%

36.13%

12.46%

48.59%

23.91%

72.50%

20.15%

92.65%

7.3500%

1983

100%

20.32%

16.94%

37.26%

12.45%

49.71%

23.39%

73.10%

19.73%

92.83%

7.1700%

1984

100%

21.12%

16.86%

37.98%

12.58%

50.56%

22.93%

73.49%

19.16%

92.65%

7.3500%

1985

100%

21.81%

16.97%

38.78%

12.68%

51.46%

22.60%

74.06%

18.77%

92.83%

7.1700%

1986

100%

25.75%

16.82%

42.57%

12.12%

54.69%

21.33%

76.02%

17.52%

93.54%

6.4600%

1987

100%

24.81%

18.45%

43.26%

12.35%

55.61%

21.31%

76.92%

17.01%

93.93%

6.0700%

1988

100%

27.58%

18.04%

45.62%

11.66%

57.28%

20.56%

77.84%

16.44%

94.28%

5.7200%

1989

100%

25.24%

18.70%

43.94%

11.84%

55.78%

21.44%

77.22%

16.95%

94.17%

5.8300%

1990

100%

25.13%

18.51%

43.64%

11.72%

55.36%

21.66%

77.02%

17.17%

94.19%

5.8100%

1991

100%

24.82%

18.56%

43.38%

12.44%

55.82%

21.47%

77.29%

17.23%

94.52%

5.4800%

1992

100%

27.54%

18.34%

45.88%

12.13%

58.01%

20.47%

78.48%

16.46%

94.94%

5.0600%

1993

100%

29.01%

18.35%

47.36%

11.88%

59.24%

20.03%

79.27%

15.92%

95.19%

4.8100%

1994

100%

28.86%

18.66%

47.52%

11.93%

59.45%

20.10%

79.55%

15.68%

95.23%

4.7700%

1995

100%

30.26%

18.65%

48.91%

11.84%

60.75%

19.61%

80.36%

15.03%

95.39%

4.6100%

1996

100%

32.31%

18.66%

50.97%

11.54%

62.51%

18.81%

81.32%

14.36%

95.68%

4.3200%

1997

100%

33.17%

18.70%

51.87%

11.33%

63.20%

18.47%

81.67%

14.05%

95.72%

4.2800%

1998

100%

34.75%

19.09%

53.84%

11.20%

65.04%

17.65%

82.69%

13.10%

95.79%

4.2100%

1999

100%

36.18%

19.27%

55.45%

11.00%

66.45%

17.09%

83.54%

12.46%

96.00%

4.0000%

2000

100%

37.42%

19.05%

56.47%

10.86%

67.33%

16.68%

84.01%

12.08%

96.09%

3.9100%

2001

100%

33.89%

19.36%

53.25%

11.64%

64.89%

18.01%

82.90%

13.13%

96.03%

3.9700%

2002

100%

33.71%

20.09%

53.80%

11.93%

65.73%

18.17%

83.90%

12.60%

96.50%

3.5000%

2003

100%

34.27%

20.09%

54.36%

11.48%

65.84%

18.04%

83.88%

12.66%

96.54%

3.4600%

2004

100%

36.89%

20.23%

57.13%

11.07%

68.19%

16.67%

84.86%

11.85%

96.70%

3.2960%

2005

100%

39.38%

20.29%

59.67%

10.63%

70.30%

15.69%

85.99%

10.94%

96.93%

3.0678%

2006

100%

39.89%

20.25%

60.14%

10.65%

70.79%

15.47%

86.27%

10.75%

97.01%

2.99%

Source: Internal Revenue Service

Table 7
Dollar Cut-Off, 1980-2006
(Minimum AGI for tax return to fall into various percentiles)

Year

Total

Top 1%

Top 5%

Top 10%

Top 25%

Top 50%

1980

0

$80,580

$43,792

$35,070

$23,606

$12,936

1981

0

$85,428

$47,845

$38,283

$25,655

$14,000

1982

0

$89,388

$49,284

$39,676

$27,027

$14,539

1983

0

$93,512

$51,553

$41,222

$27,827

$15,044

1984

0

$100,889

$55,423

$43,956

$29,360

$15,998

1985

0

$108,134

$58,883

$46,322

$30,928

$16,688

1986

0

$118,818

$62,377

$48,656

$32,242

$17,302

Tax Reform Act of 1986 changed the definition of AGI, so data above and below this line not strictly comparable

1987

0

$139,289

$68,414

$52,921

$33,983

$17,768

1988

0

$157,136

$72,735

$55,437

$35,398

$18,367

1989

0

$163,869

$76,933

$58,263

$36,839

$18,993

1990

0

$167,421

$79,064

$60,287

$38,080

$19,767

1991

0

$170,139

$81,720

$61,944

$38,929

$20,097

1992

0

$181,904

$85,103

$64,457

$40,378

$20,803

1993

0

$185,715

$87,386

$66,077

$41,210

$21,179

1994

0

$195,726

$91,226

$68,753

$42,742

$21,802

1995

0

$209,406

$96,221

$72,094

$44,207

$22,344

1996

0

$227,546

$101,141

$74,986

$45,757

$23,174

1997

0

$250,736

$108,048

$79,212

$48,173

$24,393

1998

0

$269,496

$114,729

$83,220

$50,607

$25,491

1999

0

$293,415

$120,846

$87,682

$52,965

$26,415

2000

0

$313,469

$128,336

$92,144

$55,225

$27,682

2001

0

$292,913

$127,904

$92,754

$56,085

$28,528

2002

0

$285,424

$126,525

$92,663

$56,401

$28,654

2003

0

$295,495

$130,080

$94,891

$57,343

$29,019

2004

0

$328,049

$137,056

$99,112

$60,041

$30,122

2005

0

$364,657

$145,283

$103,912

$62,068

$30,881

2006

0

$388,806

$153,542

$108,904

$64,702

$31,987

Source: Internal Revenue Service

Table 8
Average Tax Rate, 1980-2006
(Percentage of AGI paid in income taxes)

Year

Total

Top 1%

Top 2-5%

Top 5%

Top 6-10%

Top 10%

Top 11-25%

Top 25%

Top 26-50%

Top 50%

Bottom 50%

1980

15.31%

34.47%

21.71%

26.85%

17.13%

23.49%

14.80%

19.72%

11.91%

17.29%

6.10%

1981

15.76%

33.37%

22.08%

26.59%

18.16%

23.64%

15.53%

20.11%

12.48%

17.73%

6.62%

1982

14.72%

31.43%

20.44%

25.05%

16.61%

22.17%

14.35%

18.79%

11.63%

16.57%

6.10%

1983

13.79%

30.18%

18.77%

23.64%

15.54%

20.91%

13.20%

17.62%

10.76%

15.52%

5.66%

1984

13.68%

29.92%

18.41%

23.42%

15.57%

20.81%

12.90%

17.47%

10.48%

15.35%

5.77%

1985

13.73%

29.86%

18.44%

23.50%

15.69%

20.93%

12.83%

17.55%

10.41%

15.41%

5.70%

1986

14.54%

33.13%

19.10%

25.68%

15.99%

22.64%

12.97%

18.72%

10.48%

16.32%

5.63%

Tax Reform Act of 1986 changed the definition of AGI, so data above and below this line not strictly comparable

1987

13.12%

26.41%

18.13%

22.10%

14.43%

19.77%

11.71%

16.61%

9.45%

14.60%

5.09%

1988

13.21%

24.04%

17.85%

21.14%

14.07%

19.18%

11.82%

16.47%

9.60%

14.64%

5.06%

1989

13.12%

23.34%

17.97%

20.71%

13.93%

18.77%

12.08%

16.27%

9.77%

14.53%

5.11%

1990

12.95%

23.25%

17.60%

20.46%

13.63%

18.50%

12.01%

16.06%

9.73%

14.36%

5.01%

1991

12.75%

24.37%

17.10%

20.62%

13.96%

18.63%

11.57%

15.93%

9.55%

14.20%

4.62%

1992

12.94%

25.05%

17.21%

21.19%

13.99%

19.13%

11.39%

16.25%

9.42%

14.44%

4.39%

1993

13.32%

28.01%

17.48%

22.71%

14.01%

20.20%

11.40%

16.90%

9.37%

14.90%

4.29%

1994

13.50%

28.23%

17.93%

23.04%

14.20%

20.48%

11.57%

17.15%

9.42%

15.11%

4.32%

1995

13.86%

28.73%

18.19%

23.53%

14.46%

20.97%

11.71%

17.58%

9.43%

15.47%

4.39%

1996

14.34%

28.87%

18.68%

24.07%

14.74%

21.55%

11.86%

18.12%

9.53%

15.96%

4.40%

1997

14.48%

27.64%

18.78%

23.62%

14.87%

21.36%

12.04%

18.18%

9.63%

16.09%

4.48%

1998

14.42%

27.12%

19.14%

23.63%

14.79%

21.42%

11.63%

18.16%

9.12%

16.00%

4.44%

1999

14.85%

27.53%

19.68%

24.18%

15.06%

21.98%

11.76%

18.66%

9.12%

16.43%

4.48%

2000

15.26%

27.45%

20.07%

24.42%

15.48%

22.34%

12.04%

19.09%

9.28%

16.86%

4.60%

2001

14.23%

27.50%

19.12%

23.68%

14.89%

21.41%

11.58%

18.08%

8.91%

15.85%

4.09%

2002

13.03%

27.25%

18.15%

22.95%

13.87%

20.51%

10.47%

16.99%

7.67%

14.66%

3.21%

2003

11.90%

24.31%

16.58%

20.74%

12.22%

18.49%

9.54%

15.38%

7.12%

13.35%

2.95%

2004

12.10%

23.49%

16.95%

20.67%

12.28%

18.60%

9.26%

15.53%

7.01%

13.51%

2.97%

2005

12.45%

23.13%

17.36%

20.78%

12.37%

18.84%

9.27%

15.86%

6.93%

13.84%

2.98%

2006

12.60%

22.79%

17.48%

20.68%

12.60%

18.86%

9.36%

15.95%

7.01%

13.98%

3.01%

Source: Internal Revenue Service

(1) All tax returns that have a positive AGI are included, even those that do not have a positive income tax liability.

(2) Income tax after credits (the tax measure above) does not account for the refundable portion of EITC. If it were included (as is often the case with other organizations), the tax share of the top income groups would be higher. The refundable portion is legally classified as a spending program by the Office of Management and Budget and therefore is not included by the IRS in these figures.

(3) The only tax analyzed here is the federal individual income tax, which is responsible for about 25 percent of the nation's taxes paid (at all levels of government). Federal income taxes are much more progressive than payroll taxes, which are responsible for about 20 percent of all taxes paid (at all levels of government), and are more progressive than most state and local taxes (depending upon the economic assumption made about property taxes and corporate income taxes).

(4) As any public finance economist would tell you, AGI is a fairly narrow income concept (too narrow according to most experts), as it does not include certain income items like government transfers (except for the portion of Social Security benefits that is taxed), the value of employer-provided health insurance, underreported or unreported income (most notably that of sole proprietors), income derived from municipal bond interest, taxes paid on corporate income and those indirectly paid by businesses, employer contributions for Social Security and Medicare taxes, net imputed rental income, worker's compensation benefits and others.

(5) Tax return is the unit of analysis, which is broader than households, especially for those at the bottom end, many of which are dependent returns. Some dependent returns are included in the figures here, and under other units of analysis (like Treasury's Family Economic Unit), would likely be paired with their parents' returns. Also worth noting is that by using tax returns as the unit of analysis, single tax units are being compared with married units when analyzing the income share and tax share of various groups. The top income groups are much more likely to be married due to the mere fact that married couples often have two wages. While CBO makes an attempt to adjust for this by dividing a household's income by the square root of the household's size, the data in these tables makes no such adjustment.

(6) The source data is the IRS Statistics of Income Division, which uses a national sample of tax returns to provide the figures used here. The figures above were taken from data that was labeled an "early release" by SOI in July 2008, and may be revised in subsequent months.

NOTE: This page is adapted from Summary of Latest Federal Individual Income Tax Data by Gerald Prante. It is basically the tables with the analysis stripped out. I did this because a very intelligent friend of mine completely misinterpreted the analysis, coming the near opposite conclusion of reality, which suggests some of the analysis is, probably unintentionally, misleading. These are government data.