Hometax
Hometax is the National Tax Service’s online service for tax-related work, available through the web and Android and iOS apps.
What Hometax is
Hometax is the National Tax Service’s online service for tax-related work, available through the web and Android and iOS apps. Its mobile service covers tax filing and payment, applications and submissions, certificates, inquiries, and reports. Sontax includes a capital-gains estimate calculator, while businesses can create electronic tax invoices in bulk by uploading an Excel file. Mobile invoice uploads may contain up to 100 entries, with batch issuance options of 50 or 10 depending on invoice type. Login methods include joint or financial certificates, simple authentication, mobile ID, fingerprint, and username and password. Some content works without login, but username access has restrictions. Electronic invoice issuance requires an eligible certificate. Hometax supports individuals and businesses, including self-employment, investment-income, and rental-income needs. The service is free, with consultation at 126 on weekdays from 9:00–18:00.
Good
- Free web, Android, and iOS access
- Tax filing and payment functions
- Capital-gains estimate calculator
- Bulk Excel invoice creation
- Multiple mobile login methods
Watch out
- Bulk uploads are limited to 100 entries
- Electronic invoices require an eligible certificate
- Username login has mobile restrictions
- Security programs may be required on PC
Who it suits
It suits individuals and businesses handling Korean tax filing, payments, certificates, reports, income estimates, or electronic invoices. Web and mobile access support users working across those tax tasks.
Verdict
Hometax provides broad National Tax Service functions across web and mobile, including filing, payments, certificates, estimates, and electronic invoices. Its free access is useful for both personal and business tax work, subject to certificate and upload requirements.
Plans and prices
From Hometax's own pricing page, checked 12 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Hometax | Free | Official National Tax Service service; pages opened do not state a subscription price or usage limit |
The facts
Each one read from Hometax's own pages, with the date it was checked.
What it does
- Bulk invoice limit
- The mobile bulk invoice page says upload files must contain no more than 100 entries and gives batch issuance options of 50 or 10 depending on invoice type.checked 12 Oct 2026
- Certificate limitation
- Electronic tax invoice issuance requires an eligible certificate, and joint certificates and biometric login are supported only in the Sontax app.checked 12 Oct 2026
- Electronic invoices
- Sontax supports bulk electronic tax invoice creation using an Excel file.checked 12 Oct 2026
- Income tax
- Sontax provides an easy capital gains tax estimate calculator.checked 12 Oct 2026
- Intended users
- The service offers tax features for individuals and businesses, including personal tax estimates and business electronic invoice functions.checked 12 Oct 2026
- Investment income
- Yeschecked 22 Sep 2026
- Login limitation
- The service says some content is available without login, while username login has some mobile service restrictions.checked 12 Oct 2026
- Login options
- Mobile login options include joint or financial certificates, simple authentication, mobile ID, fingerprint, and username and password.checked 12 Oct 2026
- Mobile access
- The mobile Hometax service is called Sontax and is available as an app and on the mobile web.checked 12 Oct 2026
- PC requirements
- Hometax says security programs are required for taxpayer information security and installation may depend on the PC, operating system, and browser.checked 12 Oct 2026
- Privacy and security
- The privacy policy says personal information and important data are encrypted in storage and transmission, and security software is regularly updated and checked.checked 12 Oct 2026
- Purpose
- Hometax is the National Tax Service’s online service for tax-related services.checked 12 Oct 2026
- Rental income
- Yeschecked 22 Sep 2026
- Self-employment support
- Yeschecked 22 Sep 2026
- Support
- The National Tax Service lists tax consultation at 126 and says weekday service hours are 9:00–18:00.checked 12 Oct 2026
- Tax tasks
- The mobile service includes tax filing and payment, applications and submissions, certificate services, inquiries, and reports.checked 12 Oct 2026
The company
- Founded
- 1966checked 28 Sep 2026
- Headquarters
- Sejong, South Koreachecked 28 Sep 2026
Money
- Free plan
- Yeschecked 22 Sep 2026
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