What is HomeTax
- FLip Korea
- Jun 17
- 5 min read
What is HomeTax?
HomeTax (홈택스) is the Korean National Tax Service’s (NTS) online portal designed to streamline and digitize tax-related tasks for individuals, businesses, and tax professionals. It allows users to perform a wide range of tax functions without visiting a tax office.
HomeTax is operated by the 국세청 (National Tax Service, NTS) and is widely used for both personal and corporate tax administration in South Korea.

What Can You Do on HomeTax?
HomeTax offers a wide range of services across personal and business categories. Here's a breakdown:
For Individuals:
View tax payment history
Check income and tax deduction details (근로소득/사업소득 자료)
Apply for and download electronic tax certificates
Issue or verify tax invoices (세금계산서)
Request a refund or payment of taxes
Pre-fill and submit year-end tax settlement forms
Check property-related taxes like 종합부동산세
For Businesses:
Issue and manage electronic tax invoices
File VAT, corporate, and income taxes
Check withholding tax records
Submit various business tax reports
Request tax exemption documentation
Access real-time tax account information
Common Services:
Tax payment and refund status tracking
Digital certificate (공동인증서) management
My NTS Inbox (내 문서함)
Mobile services via 손택스 (SonTax), the mobile version of HomeTax
How to Log In to HomeTax
You can access HomeTax through https://www.hometax.go.kr.
Login Methods:
Digital Certificate (공동/금융인증서):
Required for most services, especially involving personal or corporate data.
You can obtain one from banks, accredited providers, or directly through HomeTax.
PASS Mobile App (Biometric Login):
Limited to certain functions.
Requires smartphone authentication and prior setup.
Simple Login (간편인증):
Uses methods like Kakao, Naver, KB, Toss, etc.
Increasingly supported for personal tax services.
Mobile Access: 손택스 (Sontax)
HomeTax also has a mobile version called 손택스 (Sontax), available on iOS and Android. This app offers many of the same features as the web version, including:
Year-end tax settlement review
Income deduction certificate issuance
Simple login and biometric authentication
Language Support
HomeTax’s default interface is in Korean, but they offer limited English, Chinese, and Vietnamese versions for foreigners, covering key services like:
Tax return guidance
Residency certificate issuance
Business registration support
For full functionality, Korean proficiency or support from a local accountant may be needed.
Who Uses HomeTax?
HomeTax is mandatory for:
Corporations
Freelancers and sole proprietors
Foreign residents with income in Korea
Employers for payroll tax filing
Anyone filing personal or business tax forms
Tips for Foreign Users
You’ll need a Korean Alien Registration Card (ARC) to register and obtain a digital certificate.
Foreigners can also designate an accounting agent to access HomeTax on their behalf.
Most embassies and global consulting firms in Korea are familiar with HomeTax navigation for expats.
Step-by-Step Guide to Using HomeTax for Businesses
1. Prepare Required Items
To use HomeTax as a business, you'll need:
A business registration number (사업자등록번호)
A corporate/representative digital certificate (사업자용 공동인증서) – this is different from a personal one
A PC with security modules (ActiveX or EXE-based) or the Sontax app if mobile
2. Access the HomeTax Website
Go to: https://www.hometax.go.kr
Click the 로그인 (Login) button on the top right.
3. Choose Login Method
For businesses, the recommended method is:
▶ 공동/금융 인증서 로그인 (Certificate Login)
Choose 사업자 (Business) if prompted
Insert your USB or smartcard (if using hardware-based certificate)
Click “인증서 로그인”
4. Logging in With a Business Digital Certificate
Here’s how to log in step-by-step:
Click “공동인증서 로그인”
Select the 사업자용 인증서 from the list
Enter the business certificate password (not your personal one)
If using a card reader (범용인증서 카드 or 기업용 보안토큰), insert the card and authenticate
Wait for the security modules to verify and approve login
Once logged in, you'll be in the business dashboard.
Common Post-Login Services for Businesses
After login, you can access:
Service | Description |
전자(세금)계산서 발급/조회 | Issue or view tax invoices |
부가가치세 신고 | VAT filing |
원천세 신고 | Withholding tax filing |
사업자등록 관련 신청 | Business registration or change |
세금 납부 | Pay taxes or view payment status |
각종 증명서 발급 | Issue tax-related certificates (납세증명서, 사업자등록증명 등) |
How to Issue a Tax Invoice (전자세금계산서)
로그인 후 click "전자세금계산서"
Click "세금계산서 작성"
Enter:
Supplier (공급자) info – auto-filled if you're logged in
Buyer (공급받는자) info – business number, name
Transaction details – item, amount, VAT
Click 저장 및 전송
Optional: Set Up and Use 손택스 (Sontax) App
Download 손택스 from the App Store or Google Play
Register your business certificate on your smartphone
Use biometric login or 인증서 login
Access year-end settlements, basic filings, and certificate issuance on the go
How to Register or Renew a Business Certificate
Visit a certified authority like KFTC, KICA, NICE, or your corporate bank
Request a business certificate (사업자용 공동인증서)
Provide:
Business registration certificate
Representative's ID
Power of attorney if not the representative
Store it securely in:
USB drive
Secure token
PC hard drive
Troubleshooting Login Issues
Issue | Solution |
인증서가 안 보임 | Reinstall 인증서 program (설치프로그램 링크 on HomeTax login page) |
로그인 안 됨 | Try using Internet Explorer or Edge in compatibility mode |
사업자 인증서 분실 | Reissue through issuing authority or bank |
공동대표 로그인 | Must register each 대표’s 인증서 separately under the business name |
Step-by-Step Guide: HomeTax for Individuals
1. What You Need to Get Started
Before you log in as an individual, make sure you have:
Korean resident registration number (주민등록번호) or Alien Registration Number (외국인등록번호) if you're a foreigner
A personal digital certificate (개인용 공동인증서) — obtained from your bank or a certification authority
A PC (with ActiveX-type security programs) or smartphone (for biometric access)
Optional: Mobile apps like PASS, Kakao, or Toss for simple login
2. Go to the HomeTax Website
Click 로그인 (Login) on the top-right corner
3. Choose a Login Method
You’ll see several login options. As an individual, these are your main choices:
Option 1: 공동/금융 인증서 로그인 (Digital Certificate Login)
Most secure and commonly used
Click 공동인증서 로그인
Choose your certificate (must be 개인용)
Enter your certificate password
Option 2: 간편인증 로그인 (Simple Login)
Available through services like:
PASS
Kakao
KB
Naver
Toss
Click your preferred provider and follow their mobile verification process
Option 3: 아이디 로그인 (ID Login) – Limited Features
Only for viewing basic content, not for tax filing or document requests
4. How to Obtain a Digital Certificate (개인 공동인증서)
Option A: Via Your Bank
Visit your Korean bank's online banking site
Register for online banking and request a 공동인증서
Download and save it to:
PC (hard drive or USB)
Mobile device (via apps)
Set a password you’ll remember
Option B: Use the HomeTax-issued certificate
Navigate to 인증센터 (Certificate Center)
Follow prompts to issue or import an existing certificate
After Login: What Can Individuals Do?
Menu | Description |
My NTS (마이홈택스) | Personalized dashboard |
소득/세액공제 조회 | View income and tax deductions |
연말정산 간소화 | Pre-fill year-end tax settlement (simplified data) |
전자세금계산서 조회 | View tax invoices you’ve received |
세금 신고 및 납부 | File and pay income, local, and VAT taxes |
납세증명서 발급 | Issue tax payment certificates |
종합부동산세 확인 | Property-related taxes (if applicable) |
Using the 손택스 (Sontax) Mobile App
Download “손택스” from your app store
Register your 인증서 or activate biometric login
Use it for:
Year-end tax settlement
Checking tax invoice history
Downloading certificates
Income deduction review
How to Use HomeTax for Year-End Tax Settlement (연말정산 간소화)
Log in using your certificate
Click 연말정산간소화
Select the year
View pre-filled data: income, health insurance, donations, education expenses, etc.
Download and submit data to your employer or accounting software
Troubleshooting Common Issues
Problem | Solution |
인증서가 안 뜸 | Reinstall HomeTax’s 보안프로그램 (security modules) |
비밀번호 오류 | Use the certificate reset option via issuing authority |
외국인 인증서 발급 불가 | Visit your bank with ARC and passport to get a 인증서 |
모바일 인증 실패 | Use USB or cloud-based certificate import method |
Language Support
Limited English interface: https://www.nts.go.kr/eng
Or call the NTS Foreign Taxpayer Service Center at ☎ 1588-0560 (press 7 for English)
If you need to issue any type of tax related certificates don't hesitate to use this service!
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