Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

VAT and German freelance working on international project
The VAT number should be equivalent from the point of view of your client. The fact that you are a sole trader and not a limited liability doesn't matter when it comes down to pay VAT. They should pay the VAT to you and you will pay it to the government. I'll guess that their issue is with tax breaks, it is a bit more tricky to receive a tax break on paid taxes if you buy something abroad (at least it is here in Finland). If they won't pay you because of that, you could open a LTD or contract the services of a 'management company' which will do the job of invoicing, receiving the money and passing it back to you, for a fee.