@christydee This system works when there's at least near-peer salaries, but I find that the exact opposite works best for me and my family. I make ~3x what my wife makes, but we agreed early on to mingle our finances and we would contribute 100% into the household pot and get to keep a flat 200$/paycheck as our own spending money.
This puts on equal footing in terms of "lets go out to dinner" or "I want to buy a video game console" or "OMG,
shoez" and there are no hard feelings - my allowance lets me buy what I want, she can spend her money how she sees fit. We still have the occasional "I want to buy this thing that's on sale right now, but don't have the cash, can I 'borrow' from the joint account until next month" and the partner has to agree. it's a rubber stamp, mostly, but that gives a bit of a check and balance.
No one's allowed to open new credit cards, take out loans, etc without consulting the other. It's a pretty good partnership in my mind, and we are able to support each other whiel still accomplishing all our other financial goals (vacations, new vehicles, home renos, etc).
We both recently got a pair of decent raises last year, so we're going to bump up the allowance to 300/paycheck as a treat