Offer your thoughts or opinion on the input financial query or topic using your financial background.

How to share income after marriage and kids?
I can only share with you my happened with my wife and I. First, and foremost, if you think you need to protect your assets for some reason then do so. Be open and honest about it. If we get a divorce, X stays with me, and Y stays with you.  This seems silly, even when your doing it, but it's important. You can speak with a lawyer about this stuff as you need to, but get it in writing. Now I know this seems like planning for failure, but if you feel that foo is important to you, and you want to retain ownership of foo no mater what, then you have to do this step. It also works both ways. You can use, with some limitations, this to insulate your new family unit from your personal risks. For example, my business is mine. If we break up it stays mine. The income is shared, but the business is mine. This creates a barrier that if someone from 10 years ago sues my business, then my wife is protected from that. Keep in mind, different countries different rules. Next, and this is my advise. Give up on "his and hers" everything. It's just "ours". Together you make 5400€ decide how to spend 5400€ together. Pick your goals together. The pot is 5400€. End of line. It doesn't matter how much from one person or how much from another (unless your talking about mitigating losses from sick days or injuries or leave etc.). All that matters is that you make 5400€. Start your budgeting there.  Next setup an equal allowance. That is money, set aside for non-sense reasons. I like to buy video games, my wife likes to buy books. This is not for vacation, or stuff together, but just little, tiny stuff you can do for your self, without asking  "permission". The number should be small, and equal. Maybe 50€.  Finally setup a budget. House Stuff 200€, Car stuff 400€. etc. etc. then it doesn't matter who bought the house stuff. You only have to coordinate so that you don't both buy house stuff. After some time (took us around 6 months) you will find out how this works and you can add on some rules. For example, I don't go to Best Buy alone. I will spend too much on "house stuff". My wife doesn't like to make the budget, so I handle that, then we go over it. Things like that.