Korean Tax & Property Calculators
Free calculators for Korean taxes, property and loans. Each one is built from the current statute and shows the article and effective date.
The calculators themselves are in Korean
This page is here so you can find the right one. Numbers, dates and statute references are the same in both languages, and every input field is labelled, so most people manage fine with a translator open. We are translating the calculators in order of demand.
What suikbang.com is
suikbang.com is a set of free calculators for the places where Korean tax, property, loans, year-end tax settlement, business filings and financial income change the amount you pay or receive. There are 104calculators in English, and every one of them shows the statute and article it is built on, together with the date from which that figure applies. Before any rate goes on screen, the article is read in the original on the national law portal and worked by hand once against the calculator's result.
The thing we guard against most is numbers going quietly stale. The build refuses to ship if a statute cited on screen is missing from the code, and it stops if an effective date has passed while the old value is still in place. Rules that are not yet in force are kept out of the main rates and listed separately under upcoming changes; government proposals that have not passed the National Assembly sit under tax reform proposals and never enter a calculation until they are law.
This is not tax, legal or investment advice. Each calculator covers the typical case, so individual circumstances can change the result, and anything hard to undo, such as a filing or a contract, deserves a professional's check first. If you are not sure which calculator you need, describe your situation in the box below. Who runs the site and how errors are caught is set out on the about page.
Not sure which calculator you need?
Ask in plain English and we will point you to the right one. Values are not pre-filled in English, so open the calculator and enter them yourself.
Do not enter names, contact details or other personal data. Your question is sent to an external AI service to pick a calculator.
Things people actually ask
Why not just ask an AI?
Because Korean tax law moves faster than most sources keep up with. Three things we checked against the statute this year alone:
Corporate tax starts at 9%
It rose to 10% for 2026, and every bracket above it went up a point too.
Corporate Tax Calculator →Foreigners should always take the 19% flat rate
The flat rate strips every deduction. It only wins past roughly ₩140M a year.
Foreign Worker Flat Tax →Never let pension withdrawals pass ₩15M
With no other income you often pay less above the line. The bad zone is about ₩2M wide.
Pension Withdrawal Tax →
Every value we use is traced to a statute article and an effective date, and the build fails if the map and the code disagree. You can read the whole list.
More things people ask
104 questions in total, each linking straight to the calculator that answers it.
- I earn ₩60M a year. Can I actually afford a ₩800M apartment?
- What will the tax office want for a ₩1.2B apartment?
- My flat is assessed at ₩900M. How bad is the property tax?
- Ten years owned, ten years lived in. How much of my gain survives?
- Ten years of empty land, now selling. Does the surcharge bite?
- I inherited a let shop. Which figure do I put on the filing?
- Just laid off on ₩3M a month. What does unemployment pay?
- Taking a year of parental leave on ₩4M. What lands each month?
- 90 days of maternity leave. Who pays which part?
- Dropping from 40 to 20 hours a week. What does that pay?
- If I take the pension five years early, when does that stop paying off?
- I earn ₩3M a month. What pension will I get at 65?
- Contracted in Gangnam before May 9. When must I close to dodge the surcharge?
- 20 days of leave for my wife’s birth. What does that pay?
All 104 calculators
Loans4
Mortgage Limit Calculator
How much a bank will actually lend you, after LTV, DSR and the stress rate.
Open calculatorRegulated Zone Checker
What changes when a district is designated: caps, residency duties, extra tax.
Open calculatorDSR Calculator
Your debt service ratio across every loan you already have.
Open calculatorLoan Repayment Simulator
Monthly payment and total interest, including grace periods.
Open calculator
Buying9
Commercial Property Acquisition Tax
Acquisition tax and closing costs for shops, offices, land and warehouses.
Open calculatorAcquisition Tax Relief Calculator
Relief for first-time buyers and newlyweds, and what disqualifies you.
Open calculatorHome Acquisition Tax Calculator
Acquisition tax on a home, including the heavier rates for multiple owners.
Open calculatorAgent Commission Calculator
The legal ceiling on what a real estate agent can charge you.
Open calculatorForeign Buyer Reporting Deadline
When a foreign national must report a Korean property purchase, and when prior permission is required.
Open calculatorRegistration and License Tax
Tax on registrations and licences that are not property acquisitions.
Open calculatorRegistration Cost Calculator
Everything you pay at closing beyond the price itself.
Open calculatorGifted Property Acquisition Tax
Acquisition tax when a home is transferred as a gift rather than sold.
Open calculatorVehicle Acquisition Tax Calculator
Acquisition tax and bond purchase when you buy a car or motorcycle.
Open calculator
Owning6
Rental Income Tax Calculator
Tax on rent received, including deemed rent on large deposits.
Open calculatorAnnual Vehicle Tax Calculator
Yearly car tax by engine displacement, with the age discount.
Open calculatorComprehensive Real Estate Tax
The national tax on top of property tax once your holdings pass the threshold.
Open calculatorRegional Resource Facility Tax
The fire-service portion that rides along with your property tax bill.
Open calculatorLand and Building Property Tax
Property tax on land and non-residential buildings.
Open calculatorProperty Tax Calculator
Annual property tax on a home, with the single-home special rate.
Open calculator
Selling & Inheritance13
Inheritance Tax Calculator
Inheritance tax with spousal and lump-sum deductions.
Open calculatorGift vs Inheritance Tax Comparison
Whether receiving family property now as a gift or later as an inheritance costs less.
Open calculatorInheritance Tax Instalments
Paying inheritance or gift tax over two months or up to ten years.
Open calculatorNon-Resident Capital Gains Tax
Sell Korean property while living abroad and two big reliefs disappear.
Open calculatorGift With Debt Calculator
Hand over a home with a loan or lease attached and two taxes appear at once.
Open calculatorGift Tax Calculator
Tax on a gift, with the allowance that resets every ten years.
Open calculatorSingle-Home Exemption Checker
Whether your sale is exempt, and what the holding and residency rules require.
Open calculatorInheritance and Gift Property Valuation
Which figure settles the value of inherited or gifted real estate, and the exact dates the valuation window runs between.
Open calculatorNon-Business Land Surcharge
Whether farmland, forest or vacant land is caught by the period rule, and how far the surcharge lifts the capital gains tax.
Open calculatorLong-Term Holding Deduction
How much of your gain is deducted for holding the property and for living in it.
Open calculatorMulti-Home Capital Gains Surcharge
The grace period ended on 9 November 2026. See whether selling a home in a regulated area now carries the multi-home surcharge, and how much more tax it adds.
Open calculatorCapital Gains Tax Calculator
Tax when you sell property, including the surcharge for multiple owners.
Open calculatorDetached House Sale Capital Gains Tax Calculator
Where the house ends and the land begins when you sell a detached house with its yard.
Open calculator
Renting6
Deposit Guarantee Premium
What deposit insurance costs, and which insurer suits your case.
Open calculatorDeposit Priority Checker
Where your deposit ranks against the bank's mortgage.
Open calculatorLease Reporting Checker
Whether your lease must be reported, by when, and the fine if it is not.
Open calculatorLease Renewal Notice Deadline
The window in which notice must be given, for both sides.
Open calculatorRent Increase Cap Calculator
The legal ceiling on a rent increase, and deposit-to-rent conversion.
Open calculatorSmall Tenant Priority Payment
The portion of your deposit protected ahead of everyone else.
Open calculator
Housing Lottery5
Special Supply Eligibility Calculator
Screens the special-supply categories against the absolute requirements in the rules. Income limits are given as percentages. The won figure is in the public announcement.
Open calculatorSubscription Deposit Credit Calculator
What counts is not what you paid but the months and total the rules credit. This applies the three statutory caps.
Open calculatorRe-win Restriction Calculator
How long a previous win bars you from applying again, under article 54 of the Housing Supply Rules.
Open calculatorFirst-Priority Eligibility Checker
Whether your savings account qualifies you for first priority.
Open calculatorHousing Subscription Score
Your points for the apartment lottery, and where you are losing them.
Open calculator
Year-End Settlement34
Social Insurance Calculator
The four insurances taken out of your pay, split with your employer.
Open calculatorJeonse Loan Interest Deduction
Deduction on principal and interest for a rental deposit loan.
Open calculatorMonthly Rent Tax Credit
Credit for rent paid, if you meet the income and home-size limits.
Open calculatorPension Account Tax Credit
Credit for paying into a pension savings account or IRP.
Open calculatorCard Spending Deduction
The deduction for card and cash-receipt spending above the threshold.
Open calculatorChild Tax Credit Calculator
How much your children reduce your tax bill.
Open calculatorMedical, Education and Insurance Credits
Credits for medical bills, tuition and protection-type insurance.
Open calculatorHometown and Political Donations
The unusually generous credit on hometown-love and political donations.
Open calculatorDonation Tax Credit
Credit for donations, including religious organisations.
Open calculatorIndustrial Accident Benefit
Temporary disability benefit while you are off work after a workplace injury, and why visa status is not a condition.
Open calculatorHealth Insurance Status Checker
Whether you are a workplace subscriber, regional subscriber or dependent, and why arrears stop your benefits.
Open calculatorDeparture Insurance & Workplace Change
For employment-permit workers: the severance shortfall to claim before you leave, and how many workplace changes remain.
Open calculatorUnpaid Wages & Late-Payment Interest
The 20% statutory interest that runs on wages unpaid after you leave, and how long you have left to claim.
Open calculatorOvertime, Night & Holiday Pay, Annual Leave
The premium pay the law adds on top, the leave you have earned, and what is owed if you are dismissed without notice.
Open calculatorStudent Part-Time Job Tax
Tax and social insurance on a student part-time job, and the work permit you need before any of it matters.
Open calculatorMinimum Wage & Weekly Holiday Pay
Whether your hourly rate is legal, and what you are owed once weekly holiday pay is counted in.
Open calculatorResident or Non-Resident
Which one you are under Korean tax law, and whether your income from back home has to be reported here.
Open calculatorForeign Worker Take-Home Pay
Pay after tax and social insurance, plus whether you get your pension back when you leave.
Open calculatorForeign Worker Flat Tax (19%)
The 19% flat rate against normal progressive tax, and where it stops being worth it.
Open calculatorSME Young Worker Tax Relief
Income tax relief for young employees at small and medium firms.
Open calculatorYear-End Tax Settlement
Your refund or extra bill in February, estimated before it arrives.
Open calculatorEarned Income Tax Credit
The refundable credit for low-income households.
Open calculatorSeverance Pay Tax Calculator
Tax on a lump-sum severance payment, softened by years of service.
Open calculatorHousing Savings Deduction
Deduction on deposits into a housing subscription savings account.
Open calculatorSpouse's Birth and Fertility Treatment Leave
What employment insurance pays for spouse's birth leave and fertility treatment leave, and what the employer must pay.
Open calculatorSpouse's Miscarriage and Stillbirth Leave
Three paid days out of five when a spouse has a miscarriage or stillbirth, and the 20-day window to claim it. In force from 18 September 2026.
Open calculatorHourly Rate From Monthly Pay
Work the hourly rate backwards from what you are paid a month, and see whether it meets the minimum wage.
Open calculatorMonthly Take-Home Pay
What reaches your account after the four social insurances and withheld income tax, using the official simplified withholding table.
Open calculatorGross Salary from Take-Home Pay
The gross monthly salary you need to end up with a target take-home amount, adding back the four social insurances and withheld income tax.
Open calculatorReduced Working Hours Benefit
What employment insurance makes up when you cut hours for childcare, split between the first 10 hours and beyond.
Open calculatorMaternity Leave Benefit
What employment insurance covers over maternity leave and what the employer has to make up.
Open calculatorParental Leave Benefit
What parental leave pays month by month, and what the both-parents and single-parent schemes add.
Open calculatorUnemployment Benefit
The daily job-seeking benefit and the number of days payable after leaving a job, and whether you land on the floor or the ceiling.
Open calculatorMortgage Interest Deduction
Deduction on long-term mortgage interest, by loan term and rate type.
Open calculator
Business16
Corporate Tax Calculator
Corporate tax and local income tax, with the rate rise that started in 2026.
Open calculatorSole Trader vs Company
Which structure pays less tax at your income level.
Open calculatorSimplified VAT Eligibility
Whether you qualify as a simplified taxpayer, and whether you want to.
Open calculatorVAT Calculator
VAT payable from sales and purchases.
Open calculatorPenalty Tax Calculator
What a late or understated filing costs, day by day.
Open calculatorSmall Business Mutual Aid Deduction
Deduction for the Noran Umbrella mutual aid fund.
Open calculatorInterim Tax Payment Calculator
The November bill based on last year, and how to cut it using this year's numbers.
Open calculatorBusiness Entertainment Limit
How much client entertainment is actually deductible.
Open calculatorCompany Car Expense Calculator
What a business vehicle really deducts, and what a missing logbook costs.
Open calculatorKorean Car Lease Comparison Calculator
Finance lease, operating lease or rental: which one deducts more, and why.
Open calculatorBookkeeping Duty Checker
Double-entry books, simplified books, or a verified return: which applies to you.
Open calculatorGlobal Income Tax Return
Your May tax return, with expenses and withholding already paid.
Open calculatorOther Income Tax Calculator
Tax on lecture fees, prizes, royalties and one-off income.
Open calculatorCrypto Tax Calculator
Korean tax on crypto gains and lending income from 2027: ₩2.5M deducted, 22% on the rest.
Open calculatorDaily and Part-Time Wage Tax
Tax on daily wages, where a large deduction usually leaves nothing to pay.
Open calculatorSemiannual Withholding Tax Payment
Whether last year's average headcount lets you pay withheld income tax twice a year instead of monthly, and the dates to apply and pay by.
Open calculator
Investments6
Financial Income Tax Calculator
What happens when interest and dividends cross the aggregation threshold.
Open calculatorPension Withdrawal Tax
Tax when you draw your pension, and why crossing ₩15M is not always a mistake.
Open calculatorISA Tax Saving Calculator
How much an ISA account actually saves you.
Open calculatorStock Trading Tax Calculator
Transaction tax, overseas gains and dividend tax in one place.
Open calculatorNational Pension Estimator
Your future monthly old-age pension in today's money, with the correct replacement constant for each enrollment period.
Open calculatorNational Pension Timing
How the national pension changes with when you start drawing it, and at what age claiming early stops paying off.
Open calculator
Yield3
Lease Investment Breakeven Calculator
How far vacancy can rise and the loan rate can climb before cash flow turns negative, and how much room is left today.
Open calculatorTarget Yield Purchase Price Calculator
Enter the lease terms and your target yield to work backwards to the highest purchase price that still meets it.
Open calculatorProperty Investment Yield
Yield on a commercial property after vacancy, costs and borrowing.
Open calculator
Everyday2
Power Bank Flight Carry-On Calculator (Korea)
Converts a power bank's mAh and voltage to watt-hours and tells you whether Korea's rules let you carry it on board without approval, and how many you may take.
Open calculatorCar Fire Extinguisher Requirement Checker (Korea)
Tells you whether Korean law requires your car, van, truck or bus to carry a fire extinguisher, and how many of what rating.
Open calculator
Results are estimates based on what you enter and the rules in force on the date shown. They may differ from an actual bank decision or tax assessment, and the rules change often. Check with a professional before anything that matters. 한국어로 보기