Feedback on financing offer requested

I ran the loan over 30 years and 9 months to be able to compare it with the building savings scheme and that's why I arrived at the 2.25%. Also, I calculated monthly.

Then your calculation is probably a bit more accurate :)

Is that an Excel sheet of yours or is there a calculator available on the internet?

You still have a small mistake in there. The TA loan is being repaid, even if only slightly. But that could also be related to the difference between annual/monthly calculation.

Get a combination of annuity loans (and [BSP] if applicable) with different (shorter) terms and special repayment options arranged. Then compare what remaining amount is still on the statement after 5, 10, 14 (!) and 20 years.

I also included bridge financing with [BSP] because the [BSP] was not fully allocated at the time of purchasing our house, but that is only part of the total amount and will also be paid off soon. A 14-year bridge financing period would never occur to me, especially since you are putting everything into one product. Okay, you also have special repayments included, but can you afford them if children arrive?

Best regards Dirk Grafe

Is that an Excel spreadsheet from you or is the calculator available on the internet?

This is an Excel spreadsheet from me with which I compared several alternatives and durations back then.

You still have a small error in there. The TA loan is being repaid, even if only slightly. But that could also be related to the difference between annual/monthly calculation.

Yes, I have noticed that as well. For simplicity, I calculated with the interest rate that the OP mentioned.

The preferred option should be recalculated on a monthly basis anyway. The spreadsheet is only intended as an aid for rough orientation.

You don't have to base the entire structure solely on [TA/Bausparvertrag], it can also be done partially.

From an advisor's perspective, of course, basing the entire financing on [TA/Bausparvertrag] is the best, because they earn the highest possible commission from it. On the one hand from the loan, on the other hand from the [Bausparvertrag] contract fee.

Since the OP said it is a new build, I wonder why [KFW] is not involved? Is it only built according to the Energy Saving Ordinance 2016, or is it even [Kfw55]?

here are the data for the annuity offer:

amount 369,000,-
fixed interest period 30 years
nominal interest rate 2.68 %
effective annual interest rate 2.73 %
installment 1,439.10 euros
repayment rate 2.00 %
special repayment options 5% once annually
outstanding debt at the end of the fixed interest period 44,516.04 euros (assumed repayment start June 2017)

we hope our house bank can undercut this

as mentioned, we have not requested [KFW], if then for us [KFW124] is an option.