1. In Taiwan, for any company-related purchases, we ask the cashier to print our employer's tax ID on the receipt so that we can apply for reimbursement from our employer.2. Cashier: Do you need me to print the tax ID on the receipt? Customer: Yes please. The tax ID is 12345678. Cashier: Thank you. Here is your receipt.
 tax ID employer identification number employer ID federal tax identification number business registration number company registration number company identification numbertax ID 又短又明確，是統一編號最佳的翻譯。美國的公司也有類似統一編號的 ID，就叫做 employer identification number，或簡稱 EIN。你也可以白話的說 business tax ID 或 company tax ID，大家也懂。