Nobody wants to financially evaluate a child as you would the purchase of a car or home, but by the time your kid reaches the age of 18, he or she will have cost you more than some houses. You’re going to pay a lot of money for that cute little bundle – somewhere around $233,610 by the time the baby turns 18, according to a 2017 Department of Agriculture (USDA) study. Knowing your numbers will allow you to better control your costs. The USDA assumes that you had childcare and education expenses, for example, and the figure cited is for a middle-income married couple with two children.
http://www.investopedia.com/articles/personal-finance/090415/cost-raising-child-america.asp