Not enough facts to draw conclusion, maybe it helps you or maybe it helps the company and/or agent. What date does your policy renew on? Maybe it's 31 and he/she is just trying to keep things simple. Even if it helps them, it would be for 1 day which is no big deal (on a $1000yr premium if you are looking at $3-4 difference if it was the primary vehicle, secondary is probably even less)
Righto, that's the info I was trying to suss out. How does the billing breakdown? What's typical in the insurance industry? Or is there no typical but by ins. co. to ins. co. different(I imagine it's regulated) I know there are instances where if you use a portion(month in this case) you pay the whole thing. Like renting a house, y'know?