Follow-up Financing 2030 Prepare Now Building Savings Contract/Special Repayment/Fixed Deposit

The question is how far away you still are from retirement in those 7.5 years.
My personal goal is to have the place paid off by retirement (ideally earlier).
If there are still a few years in between for the last 100k, I wouldn’t worry too much about it.

I also don’t see the interest rates rising to an excessive degree.
Sure, nobody has a crystal ball, but at the moment construction loan rates are significantly higher than the base rate. Although it has been raised, it is still nowhere near 4%. And if in 7.5 years we really are at 7-10%, then Italy and Greece are probably bankrupt, and who knows who else. I see the current interest rates as strongly tied to the current crises, which - hopefully - won’t last forever.

I am now 38 :)

So don’t tie yourself to a building savings contract now, but save flexibly and take some risks?
Prepayment is definitely a nice tool... But I can’t access the possible 12K annually...

Am I the only one here in the forum who still finds 100T a lot? :)

A lot for what? For a car, that's a lot. As the outstanding debt of a 420k loan after 10 years, 140k is little. You can obviously repay so much that there is no big risk. In that respect, I would not look defensively at how you can secure cheap interest rates, but offensively think about how to best invest the available money. Honestly, I would go to the stock market here, but without Oskar and co as parasites in between. 60/40 or whatever your allocation is, you can easily implement yourself.

You can obviously repay so much that there is no major risk.

Sorry, I should have added here that through a family-internal real estate sale all other loans were paid off, except for this one. Hence the big jump... Oskar as a robo-advisor is guided ETF saving. Until now, I haven't dealt with anything else, and without guidance, I would have to really get into it... But I'm not that risk-loving to just go to the stock market with my money like that.

A robo-advisor is nothing more than a packaging around a few ETFs. With the money, you are already at the stock exchange. The packaging is quite transparent and also poorly done. As an institution, Oskar relies on bonds, but these are bad with rising interest rates and lose value. In this case, overnight money or fixed deposits would have been better and are recommended for ordinary investors as well. If you spend an evening dealing with the topic, you can immediately save Oskar and increase your return by 0.7-1% simply by replicating it. Without ending up investing differently. ;)

Sorry, here I should have added that due to a family-internal real estate sale, all other loans were paid off except for this one. Hence the big jump...

Then let’s get to the point. What is your current rate? What is your net income? Basically, I still maintain that if you got a loan for 420k, you can definitely afford 140k. 2030 is still a long way off, who knows what will happen by then. It is not a law of nature that interest rates will rise to 5-6%, and a building savings contract means that aside from the closing fee, you realize a loss every year until then (0.1% interest on credit while you could do better with your money). The building savings contract has to make that up again. Calculate from which interest rate it manages that. I would also tend not to split the follow-up financing further. Under 100k, many banks already charge a premium today because the effort for a loan is relatively independent of the amount. Regardless of which solution you choose, I would either already cover the entire follow-up financing now or postpone the entire problem to 2030.

Then let's get straight to the point. What is your current rate? What is your net income?

I earn about 2600 euros net and probably around 2800 from 2023 onwards. My wife about 1100... So just under 4000 euros in total. The current rate is 759 euros, of which about 280 are interest.

What I've gathered so far is that building savings contracts and ETFs via robo-advisors are out...

I would either already cover the entire follow-up financing now

May I ask what you mean by that?

So is fixed deposit the solution with amount X and the rest saved with a certain share of special repayment?