국세청에

국세청에

"To the National Tax Service."

'국세청에' indicates direction towards the National Tax Service for the inquiry.

국세청에 문의할 사항이 있습니다.

There is a matter to inquire with the National Tax Service.

'국세청에' indicates the destination to which the documents were submitted.

저는 국세청에 서류를 제출했습니다.

I submitted the documents to the National Tax Service.

'국세청에' expresses the entity being contacted to resolve the issue.

국세청에 전화하여 그 문제를 해결했습니다.

I resolved the issue by calling the National Tax Service.