noun
Regional Taxation Bureau
A specific government organization name; refers to regional offices of the National Tax Agency in Japan.
地方国税局は国税庁の地方支分部局です。
The Regional Taxation Bureau is a local branch office of the National Tax Agency.
国税庁 is the National Tax Agency, the central authority; 地方国税局 are its regional offices.
Compound of 地方 (regional) + 国税 (national tax) + 局 (bureau).