Some other costs to consider when it comes to having a newborn are pediatrician expenses and whether or not you plan to save for college. For our pediatrician costs, we will reference this link. It actually gives us the cost for a year's worth of visits so we'll need to divide that by 12.
As for savings, whether it's for savings or even just a rainy day, you need to multiply the amount you want to set aside each month by twelve (months in the year) and then multiply that number by eighteen. If you follow this, you could have your child's college fund taken care of by their 18th birthday.