@notacooldad - £20k might be a lot for some, I don't think £10k is excessive for anyone once a few emergencies and basic bills are taken into account.
Our expenses are approx £320 council tax, £260 gas/electric, £60 for 2 mobiles plus broadband, £40 water, £40 insurance, £40 TV license plus streaming services, £100 or so on clubs, £550 cleaner / window cleaner, £235 business running cost, £50 childcare vouchers for holiday camps, £100 DS saving = £1795 fixed expenses. Then any food, travel, entertainment, toiletries, cleaning products, new clothes, shoes, school trips, party gifts, days out, Birthday/ Christmas, holiday, pensions, our savings etc. It would take months to give a cleaner notice, adjust funded items like vouchers and cancel clubs or subscriptions, and we can't wind up the business if we want to work the next month, so the costs simply have to be factored in for a bit. Great if you don't have much in regular expenses but it might help to see how they can add up.