Can a photovoltaic system be included in financing retroactively?

Musketeer, I don’t need to look that up, that’s my job and so I have done it many times... A loan, apply the interest for the €12,000 and that’s it. The tax office doesn’t ask about that...

How does it then work with the consideration of the repayment? Do you calculate that anew every year?

No, the percentage share stays the same.

Musketeer, I don't need to look that up, that's my job and I've done it many times... A loan, apply the interest for the €12,000 and that's it. The tax office doesn't ask about it...

Then you can surely provide us with sources for your statements.

Then you can surely provide us with sources for your statements.

It is enough if you look at the Income Tax Act, Paragraph 4, Section 4.

I buy a photovoltaic system and finance it through the bank, so the portion that I have financed for the photovoltaic system is business-related and I can deduct the interest incurred for it.

It does not matter at all whether I have equity or not. Because what I do with the equity is none of the tax office's business.... I could also park a Porsche in front of the door with the €100,000, so what...

Good morning, to briefly return to the topic:

The bank has now offered me the 2nd option, i.e., a separate loan just for the photovoltaic system.

They would pass this on to me under the same conditions as the existing loan. However, I should take enough time now and think about the amount so that we don’t have to start again in about a quarter of a year because something else needs refinancing. The idea is that I only want to go through the processing effort once.

But there is no mention of additional fees or mortgage. Therefore, I find it quite good.

However, the interest rate is of course based on the level from almost a year ago like the rest. In the meantime, the interest rate has of course gone down, especially for a 10-year fixed rate. The question is whether I can get a cheaper rate elsewhere for the incredibly high loan amount of 12k without a mortgage (which no other bank wants anyway because of ranking, etc.) or additional fees that would then offset the interest savings.

Moreover, the interest itself doesn’t really matter to me since I can deduct it as an operating expense. The question would be whether the cheaper interest rate would allow for better repayment, and thus the system would be paid off earlier and generate profit.

But I think for the small amount, the additional hassle (finding another bank that goes along with the spiel for 12k€) isn’t worth it.

From an accounting perspective, it is of course simpler to have a separate loan. However, since you usually operate as a sole proprietorship as a photovoltaic operator and all amounts are attributed to you personally, you can also simply reallocate the respective share of the photovoltaic financing from the [Hausdarlehen].