Average 1997 Federal and State Income Tax Rates, by Income Class

Size of Income

Federal Tax as Percentage of Adjusted Gross Income

State Tax as Percentage of Adjusted Gross Income

All Returns

13.0 %

3.4 %

Under $10,000

1.6

0.3

$10,000 under $20,000

4.9

0.3

$20,000 under $30,000

7.8

0.9

$30,000 under $50,000

9.8

2.4

$50,000 under $75,000

11.6

4.3

$75,000 under $100,000

14.4

5.4

$100,000 under $150,000

17.1

5.6

$150,000 under $200,000

19.9

5.7

$200,000 under $500,000

25

5.9

$500,000 under $1,000,000

29.6

5.7

$1,000,000 or more

29.7

4.7

Source: U.S. Department of the Treasury, 1998