The NTS oversees 7 regional tax offices (Seoul, Central, Incheon, Daejeon, Gwangju, Daegu, Busan) with over 100 local tax offices beneath them, each assigned by business/residential address. Business registration and filings are, in principle, handled by your jurisdictional office, though most tasks can be done remotely through Hometax.
Phone consultations are unified under a single number regardless of jurisdiction — the National Tax Counseling Center (126, no area code) — which handles tax law interpretation, Hometax usage guidance, and more.
Where to direct each type of inquiry
Book ahead before visiting in person
For complex matters (like responding to a tax audit inquiry), booking an appointment via Hometax or the counseling center before visiting lets you skip the wait and meet directly with the responsible officer.
Frequently Asked Questions
Related Topics
Finding Your Tax Office and Checking Business Registration Status
How to find your jurisdictional tax office and check a business registration number's status (or your own) on Hometax.
A Complete Guide to Taxpayer Services for Foreigners
Every channel a foreign taxpayer can use — NTS English support, Hometax multilingual features, and KakaoTalk consultation.