Glad to hear things got sorted out. The tax authorities are often a bit random. Like they forgot to send me a bill one year and since I only work 40% and can't really save money, I spent the money I had set aside on medical bills and things like that. Biiig mistake, suddenly I was told I owe "Vater Staat" a grand. Doesn't sound like much but on my salary, it's a fortune.

But as was said before, it should not be much more than 25%, unless you are earning the kind of salary where you can easily spare a third and still have more than most people to play with, like dentists.