Childcare is the most expensive bit.
£50-60 per day for nursery between 12 months and when they start school can be a huge hit. Government funding doesn’t make much of a dent.
Wrap around care is about £14 a day in my area for 8-6pm.
School holiday childcare is costing me about £27 a day this summer for primary aged child.
The first year is pretty expensive, kitting out a nursery with cot and wardrobe, baby monitor, then the pram, sets of clothes every couple of months as they grow so quickly, one off purchases to make life easier like a Moses basket, bouncer, jumperoo, breast feeding kit, first pair of shoes etc. Then the odd desperation purchases like a sling or side by side cot because they Just Won’t Sleep!
Kitting out a kid’s room as they grow too - toddler bed or big bed, a desk to do homework.
The experiences you might want to give them - books, bike, computer/tablet, activities/classes like karate, swimming, dancing, whatever. School trips are cheap until they start going on residentials. Trips eg to petting farm, theme parks
Then they grow so need a new bike, bigger clothes, a new coat as they’ve lost one at school….
School uniform… In primary I’ve paid maybe £200 a year. (2 pairs of school shoes a year as they get wrecked, logo school jumpers, supermarket trousers/skirts/shirts, logo PE kit). High school will cost more as bigger bodies need bigger clothes/shoes.
Saving for their future as much as you’re able… university, car, driving lessons, house deposit.
Birthdays and Christmas - a party out somewhere can cost about £200.