4. To provide for the expenditures incurred for an acquisition under this Act, the municipal corporation may, in the by-law mentioned in section 2, order a loan, allocate sums of money from its general fund or impose a special tax to be levied in the year following the date on which the by-law comes into force.
Upon approval of the by-law, the amount of the expenditure is subtracted from the amount fixed under section 1.