Bank Details will be requested each year when drafting your German Annual VAT Return. The German Tax Office need these to directly refund any money owed for local purchases, imports, and credit notes during the previous year. This refund is dependent on all payments being made according to the VAT obligations throughout the year. Bank Details will always be requested regardless of a refund being due or not. The German Tax Office requires the IBAN, BIC, Name of Bank/Building Society, and Name of the Account Holder.