1. Daycare cost/Nanny. Anywhere from 3K - 4K
2. Medical but should not be too crazy given you work in FB and should have excellent insurance. I would say max 1K a year if you have a healthy baby
3. Biggest cost would be other baby expenses with wipes/diapers/food. Anywhere from 250 - 500 a month.
4. One time cost of baby room, car seats, stroller, bag and all comes to about 1.5K
5. Insurance costs would go up for family. About 120 bucks a month or so
I would say miscellanies cost another 200 a month.
For someone in FB, minting millions this should all be chicken feed 😁