Billing methods refer to the various ways businesses charge customers for goods or services. Common methods include credit card payments, debit card transactions, and cash payments. Some businesses also offer online payment options, allowing customers to pay through platforms like PayPal or Apple Pay. Another popular billing method is subscription billing, where customers pay a recurring fee for ongoing access to a product or service. This method is often used by streaming services and software companies. Additionally, businesses may use invoicing for larger transactions, allowing customers to pay after receiving the product or service.