We serve customers worldwide and thus receive money from multiple different areas. We do need to pay within our country a %VAT, however a company doens't need to charge this for customers abroad (Especially when it is for companies that we serve). Is there a way to get around this?

@Hugo
You may need to use different solution in this case.

Hi, do you have a solution or a proposal in mind?

@Hugo
I would recommend to use specific software or service for this.

Is it easy to (doable with developers) to add external php code?

cannot estimate.