Well I could accept that taxes in the first 5 years are seen as loan
I don't think we're going to agree on this to be honest. My view is; in each financial year if you make no profit you don't pay tax. Personally, you'd scare off business and it would go somewhere else if you tax in the first year. That is why France has had tepid growth for years.
A lot of entrepreneurs have to put a lot of their own money in to starting a business - and businesses take time to mature. So in your world; if the business fails - not only does the owner lose his own cash but he gets stung for taxes. No thanks.
I'm going to have to look up starting a company in Deutschland and see what actually happens. But Mein Deutsch ist nicht sehr gut. But I'd be surprised to see it work the way you say.
Just found this about German taxes - and it has left me speechless. Wow, pay
*in advance* you're shitting me!
"Everyone working or running their own business pays income tax, quarterly in advance, with a tax assessment at the end of the calendar year. Profits are taxed at the personal tax rate, with a tax-free personal allowance for a single person at EUR 8,130. If you’re married, your income is taken together and the rate is EUR 16,620. The base tax rate is 14 percent rising to 42 percent for a taxable income of EUR 52,882.