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1
Gross income p.a.Current tax ratesCurrent tax payableNewtstartCurrent net income (inc. Newstart)Current average tax rateNew net income, N (inc. UBI)new average tax ratenew marginal tax rate
income increase (decrease)
Current Newstart income limit:
 27,820
2
 - 25,480 25,480 0% 25,480
3
 5,000 20,901 25,901 0% 27,980 -460%50.0%2,079
PwC suggests income tax rates that increase progressively from 0.2 per cent up for every $1000 earned
4
 10,000 13,388 23,388 0% 30,480 -205%50.0%7,092
https://www.smh.com.au/politics/federal/australia-is-in-trouble-the-plan-to-fix-australia-s-tax-system-20181010-p508ws.html
5
 15,000 6,169 21,169 0% 32,980 -120%50.0%11,811
But as the tax rate increases linearly, eventually it will become extremely high (even > 100% !)
6
 18,200 19.0% 2,133 20,333 0% 34,580 -90%50.0%14,247
7
 20,000 342 600 20,258 2% 35,480 -77%50.0%15,222
Log formula avoids this problem, is continuously progressive & simpler to calculate ("ln" = natural log to base e)
8
 25,000 1,292 61 23,769 5% 37,980 -52%50.0%14,211Two segments:
Minimum income =
UBI of 25,480 plus50%
x Gross income, G
9
 30,000 2,242 - 27,758 7% 40,480 -35%50.0%12,722up to 110,000
10
 35,000 3,192 - 31,808 9% 42,980 -23%50.0%11,172
Above this, Net income, N = A.ln(r.G + b), where G = Gross income
11
 37,000 32.5% 3,572 - 33,428 10% 43,980 -19%50.0%10,552
New net income is << current for high incomes
Abr * 1000r
12
 40,000 4,547 - 35,453 11% 45,480 -14%50.0%10,027 90,000 0.2500.0200.000020
13
 45,000 6,172 - 38,828 14% 47,980 -7%50.0%9,152
14
 50,000 7,797 - 42,203 16% 50,480 -1%50.0%8,277
15
 55,000 9,422 - 45,578 17% 52,980 4%50.0%7,402
16
 60,000 11,047 - 48,953 18% 55,480 8%50.0%6,527
17
 65,000 12,672 - 52,328 19% 57,980 11%50.0%5,652
18
 70,000 14,297 - 55,703 20% 60,480 14%50.0%4,777
19
 75,000 15,922 - 59,078 21% 62,980 16%50.0%3,902
20
 80,000 17,547 - 62,453 22% 65,480 18%50.0%3,027
21
 85,000 19,172 - 65,828 23% 67,980 20%50.0%2,152
22
 90,000 37.0% 20,797 - 69,203 23% 70,480 22%50.0%1,277
23
 95,000 22,647 - 72,353 24% 72,980 23%50.0%627
24
 100,000 24,497 - 75,503 24% 75,480 25%50.0%23
25
 105,000 26,347 - 78,653 25% 77,980 26%50.0%673
26
 110,000 28,197 - 81,803 26% 80,648 27%53.4%1,155
27
 115,000 30,047 - 84,953 26% 84,248 27%72.0%705
28
 120,000 31,897 - 88,103 27% 87,710 27%69.2%393
29
 125,000 33,747 - 91,253 27% 91,044 27%66.7%209
30
 130,000 35,597 - 94,403 27% 94,259 27%64.3%144
31
 135,000 37,447 - 97,553 28% 97,362 28%62.1%191
32
 140,000 39,297 - 100,703 28% 100,363 28%60.0%340
33
 145,000 41,147 - 103,853 28% 103,266 29%58.1%587
34
 150,000 42,997 - 107,003 29% 106,079 29%56.3%924
35
 155,000 44,847 - 110,153 29% 108,806 30%54.5%1,347
36
 160,000 46,697 - 113,303 29% 111,454 30%52.9%1,849
37
 165,000 48,547 - 116,453 29% 114,025 31%51.4%2,428
38
 170,000 50,397 - 119,603 30% 116,525 31%50.0%3,078
39
 175,000 52,247 - 122,753 30% 118,958 32%48.7%3,795
40
 180,000 45.0% 54,097 - 125,903 30% 121,327 33%47.4%4,576
41
 185,000 56,347 - 128,653 30% 123,634 33%46.2%5,019
42
 190,000 58,597 - 131,403 31% 125,885 34%45.0%5,518
43
 195,000 60,847 - 134,153 31% 128,080 34%43.9%6,073
44
 200,000 63,097 - 136,903 32% 130,223 35%42.9%6,680
45
 205,000 65,347 - 139,653 32% 132,316 35%41.9%7,337
46
 210,000 67,597 - 142,403 32% 134,361 36%40.9%8,042
47
 215,000 69,847 - 145,153 32% 136,361 37%40.0%8,792
48
 220,000 72,097 - 147,903 33% 138,318 37%39.1%9,585
49
 225,000 74,347 - 150,653 33% 140,233 38%38.3%10,420
50
 230,000 76,597 - 153,403 33% 142,108 38%37.5%11,295
51
 235,000 78,847 - 156,153 34% 143,945 39%36.7%12,208
52
 240,000 81,097 - 158,903 34% 145,745 39%36.0%13,158
53
 245,000 83,347 - 161,653 34% 147,510 40%35.3%14,143
54
 250,000 85,597 - 164,403 34% 149,241 40%34.6%15,162
55
 255,000 87,847 - 167,153 34% 150,939 41%34.0%16,214
56
 260,000 90,097 - 169,903 35% 152,605 41%33.3%17,298
57
 265,000 92,347 - 172,653 35% 154,242 42%32.7%18,411
58
 270,000 94,597 - 175,403 35% 155,849 42%32.1%19,554
59
 275,000 96,847 - 178,153 35% 157,428 43%31.6%20,725
60
 280,000 99,097 - 180,903 35% 158,980 43%31.0%21,923
61
 285,000 101,347 - 183,653 36% 160,505 44%30.5%23,148
62
 290,000 103,597 - 186,403 36% 162,005 44%30.0%24,398
63
 295,000 105,847 - 189,153 36% 163,481 45%29.5%25,672
64
 300,000 108,097 - 191,903 36% 164,932 45%29.0%26,971
65
 305,000 110,347 - 194,653 36% 166,361 45%28.6%28,292
66
 310,000 112,597 - 197,403 36% 167,767 46%28.1%29,636
67
 315,000 114,847 - 200,153 36% 169,152 46%27.7%31,001
68
 320,000 117,097 - 202,903 37% 170,516 47%27.3%32,387
69
 325,000 119,347 - 205,653 37% 171,859 47%26.9%33,794
70
 330,000 121,597 - 208,403 37% 173,182 48%26.5%35,221
71
 335,000 123,847 - 211,153 37% 174,487 48%26.1%36,666
72
 340,000 126,097 - 213,903 37% 175,772 48%25.7%38,131
73
 345,000 128,347 - 216,653 37% 177,040 49%25.4%39,613
74
 350,000 130,597 - 219,403 37% 178,290 49%25.0%41,113
75
 355,000 132,847 - 222,153 37% 179,523 49%24.7%42,630
76
 360,000 135,097 - 224,903 38% 180,739 50%24.3%44,164
77
 365,000 137,347 - 227,653 38% 181,939 50%24.0%45,714
78
 370,000 139,597 - 230,403 38% 183,124 51%23.7%47,279
79
 375,000 141,847 - 233,153 38% 184,292 51%23.4%48,861
80
 380,000 144,097 - 235,903 38% 185,446 51%23.1%50,457
81
 385,000 146,347 - 238,653 38% 186,585 52%22.8%52,068
82
 390,000 148,597 - 241,403 38% 187,710 52%22.5%53,693
83
 395,000 150,847 - 244,153 38% 188,822 52%22.2%55,331
84
 400,000 153,097 - 246,903 38% 189,919 53%22.0%56,984
85
 405,000 155,347 - 249,653 38% 191,004 53%21.7%58,649
86
 410,000 157,597 - 252,403 38% 192,075 53%21.4%60,328
87
 415,000 159,847 - 255,153 39% 193,134 53%21.2%62,019
88
 420,000 162,097 - 257,903 39% 194,180 54%20.9%63,723
89
 425,000 164,347 - 260,653 39% 195,215 54%20.7%65,438
90
 430,000 166,597 - 263,403 39% 196,238 54%20.5%67,165
91
 435,000 168,847 - 266,153 39% 197,249 55%20.2%68,904
92
 440,000 171,097 - 268,903 39% 198,249 55%20.0%70,654
93
 445,000 173,347 - 271,653 39% 199,238 55%19.8%72,415
94
 450,000 175,597 - 274,403 39% 200,216 56%19.6%74,187
95
 455,000 177,847 - 277,153 39% 201,184 56%19.4%75,969
96
 460,000 180,097 - 279,903 39% 202,141 56%19.1%77,762
97
 465,000 182,347 - 282,653 39% 203,089 56%18.9%79,564
98
 470,000 184,597 - 285,403 39% 204,026 57%18.8%81,377
99
 475,000 186,847 - 288,153 39% 204,954 57%18.6%83,199
100
 480,000 189,097 - 290,903 39% 205,872 57%18.4%85,031