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

How to share income after marriage and kids?
This would be my suggestion: I would approach the problem thinking about the loss of monthly income you (as a couple) will be facing due to your wife's change to a part time job and divide that loss between the two of you. This means that if she goes from 2200 to 1100 monthly, you'd be losing 1100 per month.  To share this loss, you could repay your wife your part of the loss (550) so both of you are 550 euro down. However, this 550 loss is a bigger burden for your wife than it is for you, so this amount could be adjusted to make up for this inequality.  To make calculations simple and avoid developing a complicated model, you could give the 800 euro above your 3k to your wife for as long as she has to work part time.