(a) General. -- The West Virginia standard deduction of a resident individual, or of husband and wife whose West Virginia taxable income is determined jointly, shall be ten per centum of West Virginia adjusted gross income or one thousand dollars, whichever is less.
(b) Husband and wife determining income separately. -- The West Virginia standard deductions of husband and wife whose West Virginia taxable incomes are determined separately (whether or not on a single form) shall not exceed ten per centum of the aggregate of their separate West Virginia adjusted gross incomes or one thousand dollars, whichever is less, but may be taken by either or divided between them in such proportions as they may elect.
(c) Expiration. -- The West Virginia standard deduction provided in this section shall not apply to taxable years beginning after the thirty-first day of December, one thousand nine hundred eighty-six.