„In this world, nothing can be said to be certain, except death and taxes.“
You can find plenty of tax advisors in the US. But you might want someone who is also reasonably familiar with German tax law and can talk to your German tax advisor on an equal footing, for example, to clarify the strategy for license payments between companies and discuss the German-US double taxation agreement for your specific case.
In Europe, you have to use MOSS to settle VAT payments, whereas in the US, you have to keep a constant eye on sales tax thresholds in a three digit number of areas with different thresholds and rules!
In other countries, such as India or Taiwan, however, your customers deduct a percentage of withholding as source tax from each invoice. You must obtain meticulous proof of this so that you can offset it later against your German corporate income tax.
While taxes in the state of Delaware in the U.S. may be relatively low, in California you’ll have to pay a minimum tax of a few hundred dollars in any case. However, this can still be worth it if, for example, you can take advantage of a business location right near your customers. The same applies in New York, Texas, and Florida.
So far, I’ve had a very positive experience with the tax consulting firm Aprio in Atlanta. Feel free to reach out to me if you’d like me to put you in touch with one of their outstanding experts, who, thanks to their German background, are also very knowledgeable about German tax law.
By the way: Nothing I write here constitutes legal advice within the meaning of the German Rechtsdienstleistungsgesetzes. The content has been compiled to the best of my knowledge. I am not a lawyer (but I know a few, if necessary).