스마트 위택스 is a mobile application that allows users to access and pay local taxes and other income taxes. To use the service, users need to have a public certificate (formerly known as a public authentication certificate) and import it from their PC through the authentication center.

Before using the service, there are a few preparation steps. If you are already a member of 위택스, you can import your certificate to your smartphone by following the instructions in the 스마트 위택스 app. Once logged in, you can view and pay any outstanding tax notices that have been issued to you. If you are not a member, you can sign up through the "회원가입" menu and start using the service. Alternatively, if you are unable to sign up, you can still make payments without logging in by using the "전자납부번호로 조회" menu and entering the electronic payment number from your tax notice.

The app offers various features such as viewing and paying local taxes and other income taxes, checking payment results, receiving electronic notifications for regular local tax payments, checking refund eligibility and application status, paying water and sewage fees, declaring vehicle registration taxes, setting up automatic payments for various taxes, and applying for a discount on vehicle taxes by making a lump sum payment. 스마트위택스 requires Android version 5.0 or above to function properly.

For any inquiries or assistance, you can contact the developer via email at or call the customer center at 110.