So we are on £85k joint, pay £500 pcm childcare, £1500 mortgage (350k house, before you all get excited - that's how much mortgages are these days with a 10% deposit!!) and can afford one (out of school hols!!) holiday a year. There are 3 of us. And I work p/t (4 hours away from f/t) to bring down childcare costs.
What mismanagement are we doing? We share a car, I get no beauty treatments at all, we shop at Morrisons / Tesco / Lidl, I sit in 2 pairs of socks and 2 jumpers to WFH in the winter, we buy all clothes except shoes and underwear second hand. That's before all bills and food.
We save £200 per month - £300 if we're being super frugal.
It all adds up and things are fucking expensive. I just bought ham, cheese, bread, washing up liquid, yoghurt, snack bars and veg to chop up for my kids packed lunch - one weeks worth - that was £20.
How lower income / single parent families do it, I'll never know. If we had another kid we would seriously struggle.
£100k for a household income is not a huge amount, OP. Especially with 2 kids. It's all relative and all it takes is illness / a break up / the boiler to break for that £100k household to be in serious financial trouble.
If my boiler broke tomorrow we'd be fucked. It would take all of our savings.