Conn. Gen. Stat. § 7-361: Procurement of fund.

Upon the recommendation of the budget-making authority and approval by the legislative body, there shall be paid into such reserve fund (a) amounts authorized to be transferred thereto from the general fund cash surplus available at the end of any fiscal year, (b) amounts raised by the annual levy of a tax not exceeding four mills for the benefit of such fund, and for no other purpose, such tax to be levied and collected in the same manner and at the same time as the regular annual taxes of the municipality or (c) surplus cash funds already held in reserve and available for such capital or nonrecurring expenditures as are contemplated by the terms of section 7-364. All money so accumulated, as hereinbefore provided, together with all interest that accrues thereon, shall be deposited in a separate bank account by the treasurer of the municipality.