[Tax Rate Schedule X, Internal Revenue Code section 1(c)] 10% on income between $0 and $8,375 15% on the income between $8,375 and $34,000; plus $837.50 25% on the income between $34,000 and $82,400; plus $4,681.25 28% on the income between $82,400 and $171,850; plus $16,781.25 33% on the income between $171,850 and $373,650; plus [...]