On avarage month (for now) I think that our net income is about the same (1500ish each), he may have 100-200 more if he has a good bonus. It's little above the national avarage but we live in capital (obviously not in UK).
Mortgage (and therefore the property) is on my name so he gives me 1/3 of that as "rent". I pay my loan and life insurance alone and it's pretty high because of my medical condition. TV, Internet, heat, electricity and other household expenses are around 200. Food and other bits are 350-400 a month but he sometimes eats lunch as a takeaway and it's his separate expense. Other named expenses are 50/50.
Cars (each have ole own but he mostly uses his company car and petrol for free), car insurances, petrol, phones bills etc are personal expenses. I save for the home (moved in less than a year ago to an empty property and some big bits are still missing) so my spare money goes there and I'll try to save some as well. He likes to buy (expensive) tools.
We don't have a joint property or any kids. If we did then it would be 50/50 or if one of us would earn more, it would be % of our income I think. If we'd rent it would be 50/50. Same with children, because he would be equally responsible for them. Full time childcare (from age 1,5 if you get a place but it's more like from age 2) is about 100 a month per child, including food and you can stay home for the first 1,5 years while the government pays you the same as your salary was before you gave birth. So it's little different in here but we'd still have to figure it out together as parents.
Although I'd like him to save more, he is very generous with his money. If I have ran out before the payday, he would give me cash. My car broke down few days ago and he bought the parts and repaired it because I'm skint this month. I will repay the parts from next salary but if I'd have no money to give back even on my payday, he wouldn't ask. He has given me money when I was about to leave to a posh restaurant to my friend's birthday party (everybody pays their own bill) and ate before leaving because I didn't have any spare money for an expensive bill. And money for taxy as well because I was ill shortly before and the weather was freezing! So yeah, he has more spare cash because mine goes to expensive home items and when it's done I'd like to pay my mortgage back in bigger chunks but it's entirely my choice. Then again if we would seperate I'd have my own home and he would have some expensive (and by then used) tools 