Where construction services are passed on under a commission, VAT may be owed by the recipient.
First check whether the specific service is a construction service and whether your company was itself commissioned to provide construction services. If both conditions apply, section 19(1a) of the Austrian VAT Act generally makes the recipient liable for VAT. The recipient must point out that it has been commissioned to provide construction services.
Match the commission, service description, invoice and reverse-charge notice. Private use or the mere fact that the recipient is a taxable person does not replace the statutory commission requirement.