We have a 16 month old. According to Mint, we have spent a total of $1,890.17 on him since his birth. This includes obvious things like diapers & supplies, kid-specific medicine, clothing, shoes, and outerwear, toys, etc. This doesn't include food - I would guess that is $20-30 per month out of the $400-450 that we spend. On a monthly level, in January he cost $103.55, February was $156.77, and March so far is $4.24 (eczema cream!)
Some things that affect this number:
-Breastfed almost exclusively. The formula that we did need we got for free from formula companies. Somehow they find out that you're pregnant.
-Cloth diaper about 75% of the time.
-We have really good health insurance. Labor & Delivery cost the $175 co-pay for the standard hospital stay. We've had to pay two co-pays since then for him, a total of $50. Family health insurance premium is higher than that for two adults, which is not part of that $1,890 number.
-Grandma really wants to spend money on him, so we make a day of hitting up the big kid consignment sales twice a year. This probably runs $40-50 for the next season's clothes. She also has bought both of his car seats (baby shower gift, and the next as a Xmas present.)
-Grandma was also our full-time Nanny until we moved out of state. I stay home now (since he was 10 months old), so there's the loss of my $100k salary in lieu of child care costs.
-We are very minimalist, very laid back parents. VERY. He has one water bottle that he uses. I know a mom who bought about a dozen different ones for her kid. We have never purchased kid specific cutlery or dishes or toddler snack containers. As a baby he had two bottles, one was sent to use for free, the other was part of a gift. He has one pair of sneakers, and one pair of boots. Six pairs of socks. One sweatshirt, one winter hat, etc. He has a shelf full of books and a basket of toys, and that's about it. We spend a lot of time at the local library and playing outside at the parks and playgrounds etc. In contrast, we were at a friend's house yesterday, and it was honestly like visiting a children's museum. They have a goddamn train table! Amongst many many many other toys. It works for them and their two kids, but geez it would never work for us.
We joined the YMCA for $85 because it includes child care, which is not part of that $1,890 figure. We haven't stopped drinking or going out to eat, and we drink WAY more coffee. You will usually find us on a Sunday afternoon having some beers at the bar down the street. We haven't stopped traveling. We are heading to Europe (all 3 of us) next month, staying at Air BNBs for less than the cost of hotels, but more expensive than hostels. We've got some tent camping trips planned for this summer, and we'll be flying to visit family as well.
In the end, the cost of child care will (hopefully) be the biggest cost issue. Crack that nut and the rest is dirt cheap in comparison.