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Early Repayment Fee Calculator

Calculate the early repayment penalty before you prepay your loan.

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When you come into a lump sum and consider paying off your loan early to reduce interest costs, you may encounter an unexpected expense called an "early repayment fee." This fee is essentially a penalty charged by the lender when you repay the principal before the agreed loan term is fulfilled.

Financial institutions such as banks forecast the interest income they'll earn over the loan period and use this to plan their fund management. When a customer repays early, not only do they lose the expected interest income, but they also face the difficulty of redeploying the sudden influx of capital efficiently. The early repayment fee exists to compensate for this opportunity cost and administrative burden.

Generally, if you repay within 3 years of loan execution, a fee is charged. The fee rate typically ranges from 0.5% to 1.5%, varying by institution, product, and agreement terms. Variable-rate loans tend to have lower fees than fixed-rate loans, and in recent years, some internet banks have introduced fee-exempt products.

SeriesCalc's Early Repayment Fee Calculator is a powerful tool to help you make informed decisions. Beyond simply calculating the fee, it helps you weigh the pros and cons of different repayment timings and develop an optimal financial strategy to avoid unnecessary expenses.

Term Glossary

Early Repayment Fee
A penalty-type fee charged by the lender when principal is repaid before the agreed loan term ends.
Sliding Scale
A calculation method where the fee burden gradually decreases as the loan maturity approaches; usually waived after 3 years.

How Is the Fee Calculated?

Most financial institutions in Korea use the "sliding method", where the fee burden gradually decreases over time. The more time that has passed since loan execution, the lower the fee.

Estimated Fee=Early Repayment Principal×Fee Rate×Remaining DaysFee Period\text{Estimated Fee} = \text{Early Repayment Principal} \times \text{Fee Rate} \times \dfrac{\text{Remaining Days}}{\text{Fee Period}}

1. Early Repayment Principal

The amount of principal you wish to repay ahead of schedule. The larger this amount, the higher the fee.

2. Early Repayment Fee Rate

The rate agreed upon at the time of loan execution, typically expressed as an annual percentage. Generally set between 1.0% and 1.4%.

3. Remaining Period / Fee Period (Core of the Sliding Method)

Regardless of the actual total loan term, the fee period is typically limited to 3 years (1,095 days). After 3 years, the early repayment fee drops to zero.

Worked Example

- Total loan: 300 million KRW (30-year mortgage)
- Fee rate: 1.2%
- Repayment timing: 1 year 6 months (548 days) after execution
- Amount to prepay: 50 million KRW

1. Remaining fee days: 1,095 - 548 = 547 days

2. Final fee: 50,000,000 × 1.2% × (547 ÷ 1,095) = approx. 299,726 KRW

Smart Tips to Save on Early Repayment Fees

  • 1. Remember the "3-Year Magic"

    The simplest and most reliable strategy: most loan products waive the fee entirely after 3 years. Even if you have spare cash, waiting until you're close to the 3-year mark can save you the penalty.

  • 2. Use the "Partial Repayment Exemption"

    Many banks allow you to repay up to 10% of the principal once a year without any fee. For example, on a 300 million KRW loan, you can prepay up to 30 million KRW annually for free. Check your loan agreement for details.

  • 3. Compare "Interest Savings" vs. "Fee" for Refinancing

    If you're considering refinancing to a lower rate, always compare the total interest savings over the remaining term against the early repayment fee plus any additional costs. Use this calculator alongside the Loan Interest Calculator for a complete picture.

  • 4. Check If You Qualify for Fee Exemption

    Certain circumstances — such as borrower death, natural disaster, or government-mandated property acquisition — may qualify for fee reduction or exemption. Some policy loan products (e.g., Ddimgol, Bogeumjarone) also offer exemptions based on income/asset criteria.

  • 5. Always Verify with Your Loan Agreement

    This calculator uses the standard sliding method as a baseline, but the actual fee rate, calculation method, and exemption conditions are defined in your loan agreement. Always review your agreement before executing any repayment and contact your lender with questions.

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