Many people often choose to pay their car insurance premiums in installment. Spreading the cost of the auto insurance throughout the year only helps by making the payment feel less painful. However, paying in installments costs more than paying your premium upfront. Many insurance companies always charge interests when you spread the cost. If at all possible, pay upfront and prevent being overcharged. But if the enterprise does not have extra charges for paying in installments, then you can opt to pay your insurance on a monthly basis.