“Typically, an insurer allows you to pay for car insurance in monthly installments or upfront on a semi-annual or annual basis.
The advantage of paying semi-annually is that you can usually get a discount for paying in full. So the issue becomes whether or not you can afford to pay your premium upfront.
You’ll save money by paying semi-annually, but if you don’t have the budget to do this, there’s no sense in stretching yourself too thin. If you have the cash, go for it. “