We both put £750 a month into the joint account. This usually gives us a surplus of around £200-£300, which we leave in to cover any big expenses, replace stuff that breaks or to pay for holidays. This month, we had to have 2 new tyres and a CV joint on the car, plus MOT and re-gas the aircon, so that accounted for £450 and we'll probably have spent a bit more than we've put in.
After that £750 comes out of my account, I'm left with around £400 my (part-time) wages and tiny pension for personal spends. I'm pretty frugal, and most months my savings go up a little. My biggest spend is probably books.
DP had around £800 personal spending, but he's jacked his job in and will be living on his savings until he gets another one. He smokes a lot though, and is adamant that he's going to stop while he's between jobs, because he can never stop while he's working.
He wants to work shorter hours so we can spend more time together.
We're in our 60s though, so no dependants and we've paid off our mortgage. If we had kids and a mortgage, we'd be skint.