Tax

Faithful Business Owner Tax Credit for Medical, Education and Monthly Rent Expenses (성실사업자 의료비·교육비·월세 세액공제): How to Apply, Amount & Eligibility (2026)

Tax credit of 15% for faithful business owners' medical and education expenses (20% for some medical expenses, 30% for infertility), 15-17% for monthly rent (limit KRW 10,000,000 per year)

This page is a translation of the Korean original and is for reference only. The official Korean guidance is the authoritative source for amounts and conditions, so be sure to confirm on the official website before applying. View Korean original (한국어)

Benefit: Faithful business owners (or those submitting a faithful reporting confirmation) who meet requirements such as revenue above 50% of the previous 3-year average, 2 or more years in business, and no tax delinquency can deduct 15% (20% and 30% for some) of the medical and education expenses they spent from business income tax. With comprehensive income of KRW 70,000,000 or below, 15% of monthly rent (17% if KRW 45,000,000 or below; monthly rent limit KRW 10,000,000 per year).
Who is eligible: Individual business owners meeting the faithful business owner requirements (including those submitting a faithful reporting confirmation)
When to apply: Apply when filing comprehensive income tax (May)
How to apply: Confirm faithful business owner status and apply for the tax credit when filing comprehensive income tax on Hometax (홈택스) · National Tax Service 126
Important notes: Confirmed through amounts attributable to 2026 (extension afterward not confirmed).
Note: For expenses in the taxable year including 2026.12.31 (sunset) — check the 2026 tax law amendments for extension from 2027. Separate from the tax credits for wage earners.

Go to the official guide →

Based on official sources as of 2026년 10월. Amounts and requirements may change, so please confirm with the official guide before applying.

Frequently asked questions

Faithful Business Owner Tax Credit for Medical, Education and Monthly Rent Expenses (성실사업자 의료비·교육비·월세 세액공제): who can receive it?

Individual business owners meeting the faithful business owner requirements (including those submitting a faithful reporting confirmation)

Faithful Business Owner Tax Credit for Medical, Education and Monthly Rent Expenses (성실사업자 의료비·교육비·월세 세액공제): how do I apply?

Confirm faithful business owner status and apply for the tax credit when filing comprehensive income tax on Hometax (홈택스) · National Tax Service 126

Faithful Business Owner Tax Credit for Medical, Education and Monthly Rent Expenses (성실사업자 의료비·교육비·월세 세액공제): how much will I receive?

Faithful business owners (or those submitting a faithful reporting confirmation) who meet requirements such as revenue above 50% of the previous 3-year average, 2 or more years in business, and no tax delinquency can deduct 15% (20% and 30% for some) of the medical and education expenses they spent from business income tax. With comprehensive income of KRW 70,000,000 or below, 15% of monthly rent (17% if KRW 45,000,000 or below; monthly rent limit KRW 10,000,000 per year).

Faithful Business Owner Tax Credit for Medical, Education and Monthly Rent Expenses (성실사업자 의료비·교육비·월세 세액공제): when can I apply?

Apply when filing comprehensive income tax (May)