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Buying an apartment in South Korea usually begins with two questions:

1. How much will the bank lend me?
2. How much of my own cash will I need?

At first, the calculation appears simple:

Apartment price − mortgage = cash needed

Korean mortgage rules, however, use several overlapping limits. Your actual loan is generally determined by the lowest applicable amount, not by one fixed percentage.

A practical model is:

Estimated mortgage = the lowest of the LTV limit, DSR limit, regional mortgage cap, product limit, and bank approval

Your cash requirement is then:

Total cash needed = purchase price − approved mortgage + taxes and transaction costs

This guide explains how each limit works and includes an interactive calculator that you can use for a preliminary estimate.

Last updated: July 12, 2026

Korean housing finance regulations can change relatively quickly. Always obtain a current bank assessment before signing a legally binding purchase contract.

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The Quick Answer

The minimum cash required depends on the percentage of the apartment price that the final mortgage actually covers.

Final mortgage as a percentage of price	Minimum buyer’s equity before costs
80%	20%
70%	30%
60%	40%
40%	60%
30%	70%

For example, if a bank approves a mortgage equal to 70% of the apartment price, you need at least 30% in your own funds.

However, a 70% LTV ceiling does not guarantee that the mortgage will cover 70% of the price. DSR, regional caps, appraisal values, existing debts, and bank policies may reduce the final amount.

You must also prepare money for:

• acquisition tax,
• the real estate agent’s fee,
• ownership and mortgage registration,
• judicial scrivener or legal expenses,
• public bond discount costs,
• moving and renovation, and
• an emergency reserve.

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Key Mortgage Terms in Korea

Mortgage: 주택담보대출

A mortgage is a loan secured by real estate.

The Korean term is:

• 주택담보대출 — housing-secured loan
• 주담대 — common abbreviation
• 아파트담보대출 — apartment-secured loan

The bank registers a mortgage over the apartment. If the borrower fails to repay the debt, the bank may enforce its security rights against the property.

An “apartment loan” is not one specific product. It may refer to:

• a mortgage used to purchase an apartment,
• a balance-payment loan for a newly built apartment,
• refinancing of an existing mortgage, or
• a loan secured against an apartment already owned.

This article focuses mainly on mortgages used to purchase an existing apartment.

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LTV: Loan-to-Value Ratio

LTV means Loan-to-Value ratio.

It limits the mortgage according to the value of the apartment accepted as collateral.

LTV loan limit = recognized property value × permitted LTV

Suppose:

• Purchase price: KRW 800 million
• Bank-recognized property value: KRW 800 million
• Permitted LTV: 70%

The theoretical LTV limit is:

KRW 800 million × 70% = KRW 560 million

This is only one limit. The bank must still consider DSR, regional caps, existing debts, and its own underwriting criteria.

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DSR: Debt Service Ratio

DSR means Debt Service Ratio.

LTV evaluates the property. DSR evaluates whether the borrower’s income is sufficient to repay all relevant debts.

DSR = annual principal and interest payments on applicable debts ÷ annual verified income

The general borrower-level DSR ceiling is currently 40% for banks and 50% for second-tier financial institutions, although exemptions, product definitions, and detailed calculation rules may apply.

For a person earning KRW 80 million per year, a 40% DSR would provide a theoretical annual debt-payment capacity of:

KRW 80 million × 40% = KRW 32 million per year

Existing debts must normally be deducted from this capacity.

These may include:

• personal credit loans,
• car loans,
• card loans,
• overdraft credit lines,
• other mortgages, and
• other debts included under the applicable DSR rules.

Two people buying the same apartment can therefore receive very different loan offers.

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Stress DSR

Korea also applies a system called Stress DSR.

When calculating borrowing capacity, the bank may use an interest rate higher than the borrower’s actual initial rate. This tests whether the borrower could continue repaying the loan if interest rates rise.

The stress rate is used for underwriting. It is not necessarily additional interest charged to the borrower.

For mortgages in the Seoul metropolitan area and regulated areas, the applicable stress-rate floor is 3.0 percentage points. For mortgages in non-regulated local areas, the basic floor is currently 1.5 percentage points, although the final stress rate depends on factors such as the loan’s fixed-rate period and interest-rate structure.

This is one reason why a basic online mortgage calculator using only the advertised interest rate may overestimate the actual loan amount.

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Down Payment and Contract Deposit Are Not Exactly the Same

In English, down payment usually means the total amount of the purchase price paid with the buyer’s own funds.

Korean real estate transactions usually divide the price into stages:

Korean term	English explanation	Typical timing
계약금 (gyeyakgeum)	Contract deposit	When the contract is signed
중도금 (jungdogeum)	Interim payment	Between contract and closing, if agreed
잔금 (jangeum)	Final balance	On the closing date

The contract deposit is commonly around 10% of the purchase price, but 10% is a market convention rather than a universal legal requirement.

The purchase mortgage is usually released around the final balance date. Buyers therefore generally need enough liquid cash to pay the contract deposit before the mortgage is disbursed.

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The Five Limits That Determine Your Mortgage

1. The Bank’s Recognized Property Value

The bank may not calculate LTV using the purchase price alone.

Depending on the lender, property, and loan product, the bank may use:

• an accepted apartment market-price database,
• an official property value,
• a formal appraisal, or
• another collateral valuation method.

Suppose:

• Contract price: KRW 800 million
• Bank-recognized value: KRW 750 million
• LTV: 70%

The LTV calculation may be:

KRW 750 million × 70% = KRW 525 million

It may not be 70% of the KRW 800 million contract price.

The resulting KRW 50 million difference between the price and recognized value must effectively be covered by the buyer’s own funds.

Always ask the bank:

“What property value will you use for the LTV calculation?”

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2. The Applicable LTV Ceiling

The LTV ceiling depends on factors such as:

• the location of the property,
• whether the area is regulated,
• whether the buyer already owns a home,
• first-time-buyer status,
• policy-loan eligibility, and
• the purpose of the loan.

The following table is a simplified guide to several major cases.

Buyer and property category	Main LTV ceiling
Buyer without a home in a non-regulated area	Generally up to 70%
Ordinary buyer without a home in a regulated area	Generally up to 40%
Eligible first-time buyer in the Seoul metropolitan area or a regulated area	Up to 70%
Eligible first-time buyer in a non-metropolitan, non-regulated area	Up to 80%
Certain eligible low-income end users in a regulated area	Preferential ceiling may reach 60%

The first-time-buyer LTV ceiling for purchases in the Seoul metropolitan area and regulated areas was reduced from 80% to 70% in June 2025. The 80% ceiling was retained for qualifying first-time purchases in non-metropolitan, non-regulated areas.

For ordinary borrowers purchasing in a regulated area, the general LTV ceiling is currently 40%. First-time buyers remain subject to a 70% ceiling, while certain qualifying end users may receive different preferential treatment.

“Up to 70%” Does Not Mean “Guaranteed 70%”

The bank may approve less because of:

• DSR,
• Stress DSR,
• existing loans,
• insufficient verified income,
• short employment history,
• a low collateral valuation,
• credit history,
• visa or residency concerns,
• bank lending quotas, or
• internal risk-management policies.

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What Is a Regulated Area?

A regulated area is a location designated for stronger housing, tax, or lending controls.

Common Korean terms include:

• 조정대상지역 — adjustment target area
• 투기과열지구 — speculative overheating district

A regulated area is not identical to the Seoul metropolitan area, called 수도권 in Korean.

The Seoul metropolitan area includes:

• Seoul,
• Incheon, and
• Gyeonggi Province.

A property can therefore be inside the Seoul metropolitan area without being inside a regulated area.

As of July 2026, the government’s real-estate map identifies all 25 districts of Seoul and selected areas of Gyeonggi Province as regulated areas. Because designations can change, check the current property address through the Ministry of Land’s regulated-area information service rather than relying on an old blog list.

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3. The DSR and Stress DSR Limit

Even when LTV permits a large mortgage, DSR may produce a much lower result.

Example

Assume:

• Annual verified income: KRW 80 million
• Bank DSR ceiling: 40%
• Existing annual debt payments: KRW 6 million

The remaining annual repayment capacity is roughly:

KRW 80 million × 40% − KRW 6 million
= KRW 26 million

The bank then converts this annual repayment capacity into a mortgage amount using its applicable:

• underwriting interest rate,
• stress rate,
• loan term,
• repayment method, and
• detailed DSR calculation rules.

A personal loan can reduce mortgage capacity significantly because its principal may be assessed over a shorter calculation period than a long-term mortgage.

For this reason, taking out a large personal loan shortly before a mortgage application may reduce, rather than increase, the total amount available for the apartment purchase.

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4. Regional Property-Price Mortgage Caps

A separate maximum applies to home-purchase mortgages in the Seoul metropolitan area and regulated areas.

Property market value	Maximum home-purchase mortgage
KRW 1.5 billion or less	KRW 600 million
More than KRW 1.5 billion and up to KRW 2.5 billion	KRW 400 million
More than KRW 2.5 billion	KRW 200 million

These price-tier limits took effect on October 16, 2025. The amount actually approved can still be lower because of LTV, DSR, policy-product limits, or bank underwriting.

The First-Time-Buyer Cap Example

Suppose a qualifying first-time buyer wants to purchase a KRW 1.2 billion apartment in Seoul.

A 70% LTV calculation produces:

KRW 1.2 billion × 70% = KRW 840 million

However, the regional maximum for a property valued at KRW 1.5 billion or less is:

KRW 600 million

The buyer cannot assume that KRW 840 million will be available.

If the DSR-supported amount is only KRW 520 million, the actual preliminary limit becomes:

KRW 520 million

The lowest limit wins.

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5. Product Limits and Bank Underwriting

A mortgage may also be limited by:

• the maximum amount of a specific product,
• nationality or residency requirements,
• income conditions,
• property-price conditions,
• the bank’s internal credit score,
• the bank’s annual or quarterly lending quota, and
• the bank’s treatment of foreign income and documents.

Korean financial authorities are maintaining tighter household-loan growth management in 2026. As a result, a bank’s practical lending capacity may become stricter even when a borrower appears to satisfy the basic regulatory ratios.

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Interactive 2026 Korea Mortgage and Cash Estimator

Use this calculator to estimate which limit may control your mortgage.

Enter all monetary values in millions of Korean won.

For example:

• KRW 800 million → enter 800
• KRW 1.2 billion → enter 1200
• Annual income of KRW 80 million → enter 80

This calculator is an educational planning tool. Its DSR calculation uses a simplified equal-payment formula and cannot reproduce a bank’s complete underwriting model.

There are 2 type of calculator.
Please use it in a way that is convenient for you.

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How Much Cash Do You Actually Need?

1. The Part Not Covered by the Mortgage

This is the largest component.

Required purchase equity = purchase price − approved mortgage

For an apartment costing KRW 800 million with a KRW 440 million mortgage:

KRW 800 million − KRW 440 million
= KRW 360 million

The KRW 360 million includes any contract deposit already paid.

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2. The Contract Deposit

A resale-apartment contract commonly requires a deposit of approximately 10%.

For a KRW 800 million apartment:

KRW 800 million × 10%
= KRW 80 million

The percentage is negotiable and must be written clearly in the contract.

Do not assume the mortgage will pay the contract deposit. A purchase mortgage is generally disbursed closer to the final balance date.

Before transferring the deposit:

• obtain a preliminary bank assessment,
• check the property registry,
• verify that the seller’s bank account is genuine,
• keep the transfer receipt, and
• discuss a financing-related contract clause when appropriate.

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3. Cash Still Needed on the Closing Date

The remaining purchase cash can be estimated as:

Purchase price − deposit already paid − mortgage proceeds

Example:

• Purchase price: KRW 800 million
• Deposit already paid: KRW 80 million
• Mortgage: KRW 440 million

The remaining purchase cash is:

KRW 800 million − KRW 80 million − KRW 440 million
= KRW 280 million

Taxes, registration, brokerage, and other expenses must be added separately.

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4. Acquisition Tax

The buyer must pay acquisition tax, called 취득세.

For a standard paid purchase of a home, the basic rates are:

Home acquisition price	Basic acquisition-tax rate
KRW 600 million or less	1%
More than KRW 600 million and up to KRW 900 million	Progressive rate from 1% to 3%
More than KRW 900 million	3%

The middle bracket uses a statutory formula that gradually increases the rate between 1% and 3%.

This table is not sufficient for every buyer. The final tax can differ because of:

• the number of homes already owned,
• household and ownership structure,
• purchases by corporations,
• luxury-home classifications,
• tax exemptions or reductions, and
• additional local taxes or surcharges.

Foreign nationality by itself should not be treated as an automatic acquisition-tax exemption.

Confirm the tax amount before signing the contract, especially if the buyer or spouse already owns another property.

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5. Real Estate Brokerage Fee

The real estate agent’s fee is called:

• 중개보수 — brokerage remuneration
• 중개수수료 — commonly used expression

For home purchases, the maximum rate depends on the transaction amount.

Purchase price	Maximum rate charged to each party
Less than KRW 50 million	0.6%, maximum KRW 250,000
KRW 50 million to less than KRW 200 million	0.5%, maximum KRW 800,000
KRW 200 million to less than KRW 900 million	0.4%
KRW 900 million to less than KRW 1.2 billion	0.5%
KRW 1.2 billion to less than KRW 1.5 billion	0.6%
KRW 1.5 billion or more	0.7%

The amount is negotiated within the applicable maximum. The buyer and seller normally pay their respective fees, and local ordinances may govern the detailed application.

Ask the agent:

• what rate will be charged,
• whether the amount is negotiable, and
• whether VAT will be added.

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6. Registration and Legal Costs

Other closing expenses may include:

• ownership-transfer registration,
• registration of the bank’s mortgage,
• judicial scrivener fees,
• public housing bond discount costs,
• document issuance,
• appraisal charges, and
• bank administrative expenses.

A judicial scrivener, called a 법무사, commonly coordinates registration work, especially when a bank mortgage is involved.

Using a judicial scrivener is common, but it is more accurate to describe it as standard professional practice rather than a universal requirement in every transaction.

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7. Emergency and Moving Costs

Do not use your entire available cash balance for the purchase itself.

Keep a separate reserve for:

• moving,
• repairs,
• furniture and appliances,
• apartment management fees,
• renovation,
• temporary accommodation, and
• unexpected closing adjustments.

For an early budget, reserving roughly an additional 2% to 5% of the purchase price for taxes and transaction expenses can be a useful planning range for a straightforward purchase.

This is not an official fixed rate. It may be insufficient when acquisition-tax surcharges or complex ownership issues apply.

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Three Sample Mortgage Calculations

Example 1: KRW 600 Million Apartment in a Local Non-Regulated Area

Assume:

• Purchase price: KRW 600 million
• Recognized property value: KRW 600 million
• LTV ceiling: 70%
• LTV limit: KRW 420 million
• DSR-supported limit: KRW 350 million
• Bank product limit: KRW 400 million

The estimated mortgage is the lowest amount:

KRW 350 million

The buyer’s minimum purchase equity is:

KRW 600 million − KRW 350 million
= KRW 250 million

The buyer must then add taxes and transaction costs.

Although the LTV ceiling is 70%, the actual mortgage covers only about 58% of the purchase price because DSR is the binding limit.

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Example 2: First-Time Buyer Purchasing a KRW 1.2 Billion Apartment in Seoul

Assume:

• Purchase price: KRW 1.2 billion
• Recognized value: KRW 1.2 billion
• First-time-buyer LTV ceiling: 70%
• LTV limit: KRW 840 million
• Regional mortgage cap: KRW 600 million
• DSR-supported amount: KRW 520 million

The estimated mortgage is:

KRW 520 million

The buyer’s minimum purchase equity is:

KRW 1.2 billion − KRW 520 million
= KRW 680 million

Even though the buyer qualifies for a 70% LTV ceiling, DSR reduces the actual loan.

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Example 3: KRW 2 Billion Apartment in the Seoul Metropolitan Area

Assume:

• Recognized property value: KRW 2 billion
• LTV-based amount: KRW 1.4 billion
• DSR-supported amount: KRW 700 million
• Regional price-tier cap: KRW 400 million

The mortgage cannot exceed:

KRW 400 million

The minimum purchase equity becomes:

KRW 2 billion − KRW 400 million
= KRW 1.6 billion

This example shows why buyers of high-priced apartments cannot calculate their cash requirement from LTV alone.

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The Five Stages of an Apartment Purchase

Stage 1: Check Credit, Income, and Loan Capacity

Before viewing apartments seriously, calculate:

• available cash,
• verified annual income,
• existing debt,
• realistic monthly repayment capacity,
• likely LTV,
• likely DSR limit, and
• the property-price mortgage cap.

A preliminary assessment is not a final approval, but it reduces the risk of signing a contract that cannot be financed.

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Stage 2: Sign the Contract and Pay the Deposit

When signing:

• verify the seller’s identity,
• review the real estate register,
• confirm the payment account,
• transfer the deposit through a traceable bank channel, and
• keep the contract and payment evidence.

The contract should state the dates and amounts for:

• deposit,
• interim payment, if any, and
• final balance.

When appropriate, discuss a written clause covering what happens if the expected mortgage is not approved.

Do not rely only on a verbal statement that “the loan should be fine.”

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Stage 3: Report the Transaction Within 30 Days

A Korean real estate sale must generally be reported within 30 days of signing. When a licensed real estate agent brokers the deal, the agent commonly handles the reporting process.

For contracts concluded on or after February 10, 2026, the transaction-reporting system was strengthened.

Foreign buyers must report information including:

• visa or residence status,
• their address, or
• whether they maintain a place of residence for at least 183 days.

The revised system also generally requires transaction-contract and deposit-payment evidence to accompany relevant reports. Additional funding-plan documents and evidence apply to certain purchases, including homes in land-transaction-permit zones.

This does not mean every foreign buyer must prove that they have already lived in Korea for 183 days. The requirement is to report the relevant address or residence-status information.

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Stage 4: Pay the Final Balance

Before final payment:

• obtain a fresh copy of the property register,
• confirm whether any new lien or seizure has appeared,
• finalize the bank’s mortgage documents,
• calculate acquisition tax and registration costs, and
• coordinate the payment and registration process.

The mortgage is commonly disbursed on or near the closing date. The exact payment flow depends on the bank, the seller’s existing mortgage, and the registration arrangement.

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Stage 5: Transfer and Register Ownership

Ownership-transfer registration must generally be applied for within 60 days after both parties have fulfilled their contractual obligations. Buyers often complete it on the closing date rather than waiting until the legal deadline.

When the seller has an existing mortgage, the bank and registration professionals usually coordinate:

• repayment of the seller’s secured loan,
• cancellation of the seller’s mortgage registration,
• transfer of ownership, and
• registration of the buyer’s new mortgage.

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Special Considerations for Foreign Buyers

Property Ownership and Mortgage Approval Are Separate Questions

A foreign national may be permitted to purchase an apartment, but that does not mean a Korean bank must approve a mortgage.

Banks may consider:

• visa type and remaining period,
• residence card status,
• duration of residence in Korea,
• Korean employment history,
• employer stability,
• Korean taxable income,
• salary deposits,
• Korean credit history,
• source of funds,
• existing domestic and overseas debt, and
• whether a Korean spouse or co-borrower is involved.

The treatment of overseas income and overseas credit information varies by bank. Do not assume that all foreign income will be accepted or rejected in the same way.

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Documents Commonly Requested

Depending on the bank and transaction, a foreign applicant may be asked for:

• passport,
• residence card,
• certificate of alien registration,
• employment certificate,
• employment contract,
• income withholding certificate,
• Korean tax documents,
• salary-account records,
• credit information,
• property purchase contract,
• property register,
• proof of the source of funds,
• marriage documents, and
• translated or authenticated overseas documents.

Korean banks note that identification is required and that employment, salary, income, and other supporting documents may be requested depending on the transaction. A branch consultation is often necessary for detailed foreign-customer requirements.

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Compare More Than One Bank

Different banks may produce different results because of:

• collateral valuation,
• recognition of foreign income,
• visa requirements,
• internal credit models,
• available lending quota,
• interest-rate discounts,
• co-borrower rules, and
• required documentation.

Compare at least:

• maximum mortgage amount,
• fixed or variable interest rate,
• repayment period,
• monthly payment,
• early repayment fee,
• required documents,
• processing schedule, and
• conditions attached to approval.

The bank offering the largest loan is not automatically the best choice. A smaller, stable mortgage may be safer than the maximum possible variable-rate loan.

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Can Foreigners Use Bogeumjari or Didimdol Loans?

Bogeumjari Loan

The Bogeumjari Loan, or 보금자리론, is a long-term policy mortgage.

Its general current conditions include:

• applicant must be a Korean national, including certain overseas Koreans and foreign-national Koreans,
• eligible home price of KRW 600 million or less,
• household income generally no more than KRW 70 million,
• LTV of up to 70%,
• general limit of KRW 360 million, and
• first-time-buyer limit of up to KRW 420 million.

Longer maturities require additional eligibility conditions.

An ordinary foreign citizen who does not meet the nationality requirement should not assume direct eligibility.

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Didimdol Loan

The Didimdol Loan, or 디딤돌대출, is a policy mortgage for qualifying households without a home.

Its general conditions include:

• Korean nationality,
• household income and net-asset limits,
• home-price and floor-area limits,
• LTV of up to 70%,
• up to 80% for certain first-time buyers outside the Seoul metropolitan and regulated-area restrictions, and
• separate maximum amounts based on household category.

The current general maximum is KRW 200 million, increasing to KRW 240 million for eligible first-time buyers and KRW 320 million for qualifying newlywed or two-child households.

Most ordinary foreign nationals are therefore not directly eligible.

A household involving a Korean borrower and foreign spouse should request an individual review of:

• borrower nationality,
• ownership structure,
• spouse’s income,
• household assets, and
• registration requirements.

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A Safe Way to Set Your Apartment Budget

Step 1: Start With the Monthly Payment

Do not begin with the maximum amount the bank might lend.

Begin with the monthly amount your household can repay comfortably after paying for:

• food,
• childcare,
• insurance,
• transportation,
• maintenance fees,
• savings, and
• emergencies.

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Step 2: List Every Existing Debt

Include:

• personal loans,
• overdraft accounts,
• car loans,
• card loans,
• installment balances,
• rental-related loans, and
• mortgages on other properties.

Ask the bank how each debt will be treated under DSR.

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Step 3: Confirm the Property’s Regulatory Category

Check whether it is:

• in the Seoul metropolitan area,
• in a regulated area,
• in a land-transaction-permit zone, or
• outside these categories.

These classifications can affect:

• LTV,
• regional loan caps,
• Stress DSR,
• loan maturity,
• occupancy obligations, and
• transaction-reporting documents.

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Step 4: Obtain Preliminary Assessments

Provide the bank with:

• expected property price,
• apartment address,
• annual income,
• existing debt,
• employment information,
• visa status, and
• available cash.

Ask for three figures:

1. the LTV-based limit,
2. the DSR-based limit, and
3. the estimated amount the bank would actually approve.

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Step 5: Use a Conservative Loan Estimate

Do not plan the transaction using only the largest verbal estimate.

Allow for:

• a lower appraisal,
• changes in interest-rate assumptions,
• additional debts found during screening,
• a reduced bank quota, and
• final document verification.

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Step 6: Calculate the Entire Cash Requirement

Include:

• contract deposit,
• remaining purchase equity,
• acquisition tax,
• brokerage fee,
• registration expenses,
• moving costs,
• renovation, and
• emergency savings remaining after closing.

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Final Buyer’s Checklist

Before signing an apartment purchase contract, confirm:

• Purchase price
• Bank-recognized property value
• Current regulated-area status
• Applicable LTV
• First-time-buyer eligibility
• DSR-supported mortgage amount
• Stress DSR assumptions
• Regional property-price mortgage cap
• Bank or product maximum
• Contract deposit amount
• Acquisition tax estimate
• Brokerage rate and VAT
• Registration and judicial scrivener costs
• Transaction-reporting documents
• Amount of cash remaining after closing

The most important rule is:

Never calculate your apartment budget from LTV alone.

Your real mortgage is the lowest amount allowed by the property value, your income, your existing debts, regional rules, the loan product, and the bank’s final review.

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Frequently Asked Questions

How much down payment do I need to buy an apartment in Korea?

There is no single percentage that applies to everyone.

If the final mortgage covers 70% of the purchase price, the buyer needs at least 30% in equity. If the mortgage covers only 40%, the buyer needs at least 60%.

DSR, regional mortgage caps, and a low bank valuation may increase the required cash further.

Taxes and closing costs must be added separately.

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Can a foreigner obtain a mortgage in Korea?

Some foreign residents can obtain commercial mortgages, especially when they have stable Korean employment, verified income, a residence card, and Korean credit history.

Approval is not guaranteed. Requirements and maximum amounts vary significantly between banks.

An in-person branch review is often more realistic than relying on an automated online application.

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Is a 70% LTV mortgage guaranteed?

No.

A 70% LTV is a ceiling, not a promise.

The final mortgage can be lower because of:

• DSR,
• Stress DSR,
• existing debt,
• bank appraisal,
• property-price caps,
• product limits, or
• internal bank policies.

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Does a 3% stress rate mean I pay 3% more interest?

Not necessarily.

The stress rate is primarily added for the bank’s DSR calculation. It tests repayment ability under a higher-rate scenario.

It can reduce the maximum loan without becoming the interest rate actually charged under the mortgage contract.

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Can I use a personal loan for the contract deposit?

It may be possible in some cases, but it can reduce the mortgage later.

A new personal loan increases total debt and consumes DSR capacity. The bank may also ask how the borrowed money will be used.

Discuss the full financing plan with the mortgage bank before taking out additional debt.

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Can the bank value the apartment below the contract price?

Yes.

The bank may use an accepted market value or appraisal instead of automatically accepting the purchase price.

When the recognized value is lower, the LTV-based mortgage also becomes lower, and the buyer must provide more cash.

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When is the mortgage disbursed?

For a resale apartment, the mortgage is commonly disbursed on or near the final balance date.

The exact flow depends on:

• whether the seller has an existing mortgage,
• the bank’s closing procedures,
• registration arrangements, and
• the purchase contract.

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Can foreigners use Bogeumjari or Didimdol loans?

Most ordinary foreign nationals do not directly satisfy the nationality requirements.

Bogeumjari is available to Korean nationals, including certain overseas Koreans and foreign-national Koreans. Didimdol generally requires Korean nationality.

A household with a Korean spouse should request a product-specific eligibility review.

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How much should I reserve for taxes and fees?

For an early estimate, reserving approximately 2% to 5% of the purchase price can be a useful starting range for a straightforward purchase.

The actual amount depends on:

• acquisition tax,
• number of homes owned,
• apartment price,
• brokerage rate,
• registration costs, and
• possible tax surcharges.

Use an individualized tax calculation before signing the contract.

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Should I sign the contract before receiving final mortgage approval?

A final mortgage approval normally requires property and contract documents, so complete approval may not always be available before signing.

However, you should obtain the strongest preliminary assessment possible and discuss a financing-related clause before transferring a large deposit.

The contract language should be reviewed with a licensed real estate agent, judicial scrivener, attorney, or other qualified professional.

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Disclaimer

This article and calculator provide general educational information about apartment mortgages and home-purchase costs in South Korea as of July 12, 2026.

They do not constitute:

• financial advice,
• tax advice,
• legal advice,
• immigration advice,
• a property appraisal, or
• a mortgage offer or approval.

Mortgage regulations, regulated-area designations, Stress DSR rates, policy-loan requirements, bank quotas, tax rules, and foreign-borrower policies can change.

The calculator uses simplified assumptions and cannot reproduce each bank’s detailed treatment of income, existing debt, interest-rate structure, exemptions, or collateral value.

Before signing a property contract or paying a deposit:

1. obtain an individualized mortgage assessment from a licensed Korean financial institution,
2. confirm the current regulatory status of the property,
3. calculate acquisition tax with the local tax authority or a qualified professional, and
4. obtain legal assistance when the ownership or financing structure is complex.