For any municipality, chapter plan, local law municipality, or local law plan under this chapter: (1) The municipal police officers’ retirement trust fund in each municipality described in s. 185.03 shall be created and maintained in the following manner:
(a) By the net proceeds of the .85-percent excise tax which may be imposed by the respective cities and towns upon certain casualty insurance companies on their gross receipts of premiums from holders of policies, which policies cover property within the corporate limits of such municipalities, as is hereinafter expressly authorized.
(b) Except as reduced or increased contributions are authorized by subsection (2), by the payment to the fund of 5 percent of the salary of each full-time police officer duly appointed and enrolled as a member of such police department, which 5 percent shall be deducted by the municipality from the compensation due to the police officer and paid over to the board of trustees of the retirement trust fund wherein such police officer is employed. No police officer shall have any right to the money so paid into the fund except as provided in this chapter.
(c) By all fines and forfeitures imposed and collected from any police officer because of the violation of any rule adopted by the board of trustees.
(d) By payment by the municipality or other sources of a sum equal to the normal cost and the amount required to fund any actuarial deficiency shown by an actuarial valuation as provided in part VII of chapter 112.
(e) By all gifts, bequests and devises when donated to the fund.
(f) By all accretions to the fund by way of interest or dividends on bank deposits or otherwise.
(g) By all other sources of income now or hereafter authorized by law for the augmentation of such municipal police officers’ retirement trust fund.
(2) Member contribution rates may be adjusted as follows:
(a) The employing municipality, by local ordinance, may elect to make an employee’s contributions. However, under no circumstances may a municipality reduce the member contribution to less than one-half of 1 percent of salary.
(b) Police officer member contributions may be increased by consent of the members’ collective bargaining representative or, if none, by majority consent of police officer members of the fund.
Nothing in this section shall be construed to require adjustment of member contribution rates in effect on the date this act becomes a law, including rates that exceed 5 percent of salary, provided that such rates are at least one-half of 1 percent of salary.