Conn. Gen. Stat. § 47a-3a: Rental agreement: Payment of rent. Written receipt for cash payment. Ledger or equivalent accounting re.

(a) Rent is payable without demand or notice at the time and place agreed upon by the parties.

(b) Unless otherwise agreed: (1) Rent is payable at the dwelling unit; (2) periodic rent is payable at the beginning of any term of one month or less and for terms of more than one month in equal monthly installments at the beginning of each month.

(c) Upon receipt of a payment in cash from or on behalf of an occupant, a landlord shall provide the person making the payment with a receipt stating the date of the payment, the amount received and the purpose for which the payment was made.

(d) Upon request by an occupant, the landlord shall provide such occupant with a copy of the ledger or equivalent accounting for the occupant's dwelling unit, showing charges assessed, payments made and any balance owed or surplus paid by such occupant.