Is that supposed to be shared fairly? No one here can tell me that.
Of course it is fair. If you have a fully paid-off house, it belongs to you and you bring it as property into the marriage. It then remains yours, you would have to pay out 50% of the increase in value as accrued gains, but this usually doesn’t make much of a difference with most real estate. It’s different if you bring a house worth €500k into the marriage, but there’s still a loan of €400k on it. Then you don’t really have a house, but only 1/5 of the house. From then on, you repay together, because, as you yourself have noticed, there is no longer “mine” and “yours.” What’s unfair about that? You both pay the repayments! Marriage simply means: both equal, no matter who earns how much.
On the subject of fairness:
- Do you both then also have tax class 4 afterwards?
- Do you make sure that household expenses are also exactly split 50/50?
- Do you pay her lost wages into her account if you have children and she temporarily stays at home?
- During the non-working time she also has pension entitlements towards you.
Many roads lead to Rome or marital happiness. Everyone should shape their partnership as they see fit. When you get married, there are certain legal claims and they simply look like this:
From the day of marriage, there is only one joint pool of assets. Whatever is paid from that during the marriage belongs to both equally, no matter who is on the land register, who paid the bill from which account, and who used the paid service more often. That is quite fair and good, and our whole state is based on a similar solidarity principle (health insurance, unemployment insurance, etc.). The (higher-earning) person does not have to like that, but they are free to emigrate to another country or not get married. A marriage contract allows deviation within certain limits, but you can never fully get out of the community of accrued gains. How else should you calculate it afterwards.
My wife and I are both employed. I earn a bit more than she does, so I have tax class 3. We both have our own accounts and a small emergency savings account. I pay interest, repayments, most ancillary costs such as building insurance, water, electricity, property tax, etc. She takes care of all household costs instead. When we go out to eat, she usually pays. At the end of the month, we put the money that we didn’t use over the month into the savings account. If something bigger needs to be bought, it gets paid from there or there is an extra repayment, vacation, etc. If one of us is short on money, the other pays or we take something from the savings account.
That has been working great for us for almost 8 years. Everyone has their own account, but there is no real mine/yours. For bigger expenses you should talk things over anyway, no matter how the funds/accounts are split.