SmartBill

SmartBill is a web-based electronic tax invoice service for businesses, described as providing tools to manage tax risk. It supports creating, issuing, viewing, and storing electronic invoices, as well as sending them to South Korea's National Tax Service. Its developer center documents APIs for individual or bulk invoice issuance, viewing, editing, deleting, and tax-authority transmission. The SmartBill mobile app lets users issue invoices, review issued and received histories, and view sales and purchase statistics. The developer center says communications are encrypted with TLS and personal information is encrypted for storage. Customer support channels include one-to-one inquiries, remote assistance, a resource library, and service manuals. Billing is available as postpaid monthly use or prepaid bundles. Postpaid costs ₩11,000 a month for 1–50 invoices, with each additional invoice charged at 220 KRW. Prepaid bundles range from 10 to 50 invoices and cost ₩11,000 to ₩55,000, paid once. Unused postpaid invoice counts do not carry over.

SmartBill combines electronic tax invoicing with mobile tools and APIs for invoice workflows. Buyers should account for the monthly postpaid limit or the five-year expiry on prepaid balances.

SmartBill suits businesses that issue electronic tax invoices and need mobile access or API-based invoice handling. Its prepaid and postpaid options offer different ways to pay for invoice issuance.