I often hear that they get more expensive as they age, but I would be interested in hearing which areas those expenses increase.
We just sent our first off to college, and there are still five more in the house. Here are some examples of ways kids get more expensive as they age:
--clothes get more expensive. Ages 0-5 you can get used clothes for pennies on the dollar. Some day I'd like to fund a startup company making kevlar pants for 6-10-year-old boys. Bigger clothes get more expensive.
--orthodontia and other dental work
--activities and interests get more expensive
--driver's ed. And the hike in car insurance premiums when they get their license.
--busier social lives means more gas money, and possibly another car, depending on circumstances
--(variable depending on location). Our school registration, class, and activity fees go *way* up for high schoolers. We also have to pay for the AP tests. Our school district's finances are in *terrible* shape, and so we get nickel-and-dimed to the ends of the earth.
--Christmas gifts (for things they want) get more expensive.
--college visits, and moving out to college. We helped DS1 get settled (i.e. paid for a bunch of his apartment stuff), and that cost a bit. We're also flying him home for Christmas, and that costs, too.
--Food. Got a kid involved in a rigorous sport? Groceries will go WAY up. When I was in high school, I was eating probably 4-5,000 calories per day.