The issuance of a business license in Luxembourg requires a stamp duty of €50. Proof of payment must accompany the application and can be completed by purchasing a €50 tax stamp from the Registration Duties, Estates, and VAT Authority (AED) or transferring €50 to the Diekirch Revenue Office's specified IBAN. Alternatively, the fee can be paid online through the MyGuichet.lu platform when submitting the application digitally. Additional expenses may arise for documents, translations, or certifications, depending on the business's specific requirements.