For purposes of payment of contributions on remuneration paid to individuals, if two (2) or more related corporations concurrently employ the same individual and compensate such individual through a common paymaster which is one of such corporations, each such corporation shall be considered to have paid as remuneration to such individual only the amounts actually disbursed by it to such individual and shall not be considered to have paid as remuneration to such individual such amounts actually disbursed to such individual by another of such corporations. In the payment of any contributions, a fractional part of a cent shall be disregarded unless it amounts to One-half Cent (1/2¢) or more, in which case it shall be increased to One Cent (1¢).