The tax imposed shall in no case be less than two hundred fifty dollars for each income year.

(1951, 1953, June, 1955, S. 1108d; 1957, P.A. 80, S. 1; 1959, P.A. 175, S. 1; 564, S. 1; 1961, P.A. 604, S. 4; February, 1965, P.A. 461, S. 9; June, 1969, P.A. 1, S. 16; June, 1971, P.A. 5, S. 113; 1972, P.A. 285, S. 8; P.A. 73-350, S. 16, 27; P.A. 81-66, S. 4, 5; 81-255, S. 24, 37; P.A. 85-159, S. 4, 19; 85-469, S. 4, 6; P.A. 99-121, S. 9, 28.)

History: 1959 acts included contingent reserves and open book accounts in computation of tax basis, and added exclusion for trade accounts payable; 1961 act increased alternate tax rate from 1.9 mills per dollar to 2.5 mills per dollar, and increased the minimum tax from $20 to $25; 1965 act specified that 2.5 mill rate applies through income years beginning before January 1, 1966, and increased rate to two and five-eighths mills thereafter and specified that $25 minimum tax applies through same years and is increased to $30 thereafter; 1969 act set temporary mill rate increase at four mills and temporary increase in minimum tax to $45 for income years beginning on and after January 1, 1969, and before January 1, 1971; 1971 act substituted 1973 for 1971 as closing date of temporary increase; 1972 act made four mill rate and $45 minimum tax permanent; P.A. 73-350 deleted provisions specifically applicable to unincorporated air carriers, leaving provision re reduction of taxes when incorporated air carrier has operated 11 months or less, changed reference to taxes under “this section” to taxes imposed under “this chapter and chapter 208” and raised minimum tax to $50, effective May 9, 1973, and applicable to income years beginning on or after January 1, 1973; P.A. 81-66 increased minimum tax from $50 to $100, effective May 4, 1981, and applicable to income years commencing on or after January 1, 1981; P.A. 81-255 increased minimum tax to $250, effective July 1, 1981, and applicable to income years commencing on or after January 1, 1981; P.A. 85-159 reduced minimum tax to $100 for income years of corporations commencing on or after January 1, 1985; P.A. 85-469 revised effective date of P.A. 85-159 but without affecting this section; P.A. 99-121 deleted provisions re reduction of tax in proportion to fractional part of year during which air carrier operated and increased the amount of the minimum tax from $100 to $250, effective June 3, 1999, and applicable to income years commencing on or after January 1, 2000.