Just go to your local banks and ask about the different options for fixed-term deposits and similar products… it was quite a few years ago, but my former landlord wanted the deposit to be held at the local savings bank. They then offered me a top interest rate (or something similar), basically a savings book for 7 years with fixed, increasing interest rates. In the first three years, you got something around the fixed deposit rate valid at the time, 0.8-1.0%, and then it increased further; in the seventh year, I believe there was a guaranteed 3.5%. When the seventh year came around, there was the 3.5%, whereas for fixed deposits, there was no longer anything like that. I don’t know if this product still exists, but something like that obviously doesn’t appear in any Check24 comparison… so it’s best to go to the branches and get informed. As mentioned above, don’t forget the withholding tax; you also have to earn that first. PS: of course, you can also buy bonds directly, but at least the 10-year government bonds are not yet at the interest rate you need.