I received my monthly statement for my auto loan and noticed two different interest payments. It looked like the amount was fairly accurate, but I wondered why it was billed separately. I sent an email to ask what was going on. This was the response "... the remainder of your March 28th payment went to the principal and interest of your April payment and some additional went to the principal of your May payment. " How is it accurate to apply any of my March payment toward the interest in April before interest has even accrued? It seems illegal that the credit union is billing me for interest before it is accrued. I specifically stated I wanted to pay above my planned principal every month for the last eight months. Is it common practice to charge me for interest prior to the due date of my loan payment or simply before any interest has accrued over a thirty day period?