Bob and Mary are married. Bob earns £60,000 and Mary earns £30,000. They have two joint accounts. No children or intention of them.
The first is for the boring bits, so mortgage and bills, maintenance and insurance etc. They pay 50% each into this account.
The second is for holidays and more fun things like a new sofa, carpets etc. Just general luxuries. Bob pays 66% into this and Mary pays 33%
Any other money is their own so they pay for their own cars, phones, separate hobbies and expenses etc.
When it comes to nights and meals out etc nobody keeps score they just kind of go with the flow but Bob tends to treat a bit more as he's the higher earner.
Is this fair enough?