If the amount with respect to which the
tentative tax to be computed is:

Not over $10,000

Over $10,000 but not over $20,000

Over $20,000 but not over $40,000

Over $40,000 but not over $60,000

Over $60,000 but not over $80,000

Over $80,000 but not over $100,000

Over $100,000 but not over $150,000

Over $150,000 but not over $250,000

Over 250,000 but not over $500,000

Over $500,000 but not over $750,000

Over $750,000 but not over $1,000,000

Over $1,000,000 but not over $1,250,000

Over $1,250,000 but not over $1,500,000

Over $1,500,000

The tentative tax is:

18% of that amount

$1,800 + 20% of excess over $10,000

$3,800 + 22% of excess over $20,000

$8,200 + 24% of excess over $40,000

$13,000 + 26% of excess over $60,000

$18,200 + 28% of excess over $80,000

$23,800 + 30% of excess over $100,000

$38,800 + 32% of excess over $150,000

$70,800 + 34% of excess over $250,000

$155,800 + 37% of excess over $500,000

$248,300 + 39% of excess over $750,000

$345,800 + 41% of excess over $1,000,000

$448,300 + 43% of excess over $1,250,000

$555,800 + 45% of excess over $1,500,000