Stock Control

Hi Guys
Just looking to see if there's anywhere i can get a pre-made excel sheet to control stock flow on a month by month basis.
Just need to be able to see what we have in stock (i.e what's not booked out one month will carry over to the next)
We don't keep a lot of stock so it doesn't have to be very advanced.

If not then a pointer in the right direction on how to create one?

Cheers

Ian