チョンセ・月額賃料変換機 (전월세 전환 계산기)
전환율を使って보증금と월세を相互変換します。
Overview
Jeonse is a Korean lease in which the tenant lodges a large refundable deposit and pays no monthly rent, the landlord taking the return on the deposit as compensation. Converting between a jeonse deposit and a monthly rent applies a conversion rate (전월세 전환율) to the portion of the deposit being exchanged, and the annual figure is divided by twelve to give the monthly amount.
法定上限：韓国銀行基準金利（3.0%）＋3.5% = 6.5%
月額賃料 (월 임대료)
| 保証金差額 (보증금 차액) | |
| 月額賃料 (월세) | |
| 年間賃料 (연 임대료) |
計算式 (산정 공식)
- 法定転換率上限 ＝ 韓国銀行基準金利 ＋ 3.5%
- 現在の韓国銀行基準金利：3.0%（2025年時点）
- 現在の上限：6.5%
- 家主は法定上限を超える転換率を請求できません
How to Use
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1
Enter your values
Type your numbers into the Jeonse-Monthly Rent Converter (Korea) input fields.
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2
Adjust the options
Choose the units, method, or region that fits your situation, or apply a quick preset.
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3
Read the result instantly
The result updates as you type — no submit button, and nothing is sent to a server.
About
The rate is capped by law at the Bank of Korea base rate plus 3.5 percentage points. With a base rate of 3.0 percent, the ceiling stands at 6.5 percent, which limits how much monthly rent a landlord may demand in exchange for reducing a deposit. The cap binds on conversions during an existing tenancy rather than on the terms of a new contract.
Semi-jeonse (반전세), combining a reduced deposit with a monthly payment, has grown as interest rates made pure jeonse less attractive to landlords, and the conversion rate is what sets the exchange between the two components.