Korean Jeonse ↔ Monthly Rent Converter
Convert lump-sum lease to monthly rent or vice versa. Conversion-rate cap from the Housing Lease Protection Act applied automatically.
How to Use
"Jeonse → Monthly": convert part of a lump-sum lease into a deposit + monthly rent. "Monthly → Jeonse": convert a deposit + monthly into a lump-sum jeonse equivalent.
Enter the existing jeonse (or rent) and the new deposit (or target jeonse). The conversion rate defaults to BoK base rate + 2%; adjust freely for negotiation.
Monthly rent (KRW/month) or jeonse amount computes instantly. If the conversion rate exceeds the Housing Lease Protection Act cap, a red warning is shown. Annualized rent and effective yield (landlord side) are also displayed.
FAQ
Jeonse → monthly rent formula?
monthly = (jeonse − new deposit) × annual rate / 12. e.g., 500M jeonse → 200M deposit + monthly X. Converted 300M × 5%/yr = 15M/yr → 1.25M/month.
Monthly → jeonse formula?
jeonse = new deposit + (monthly × 12 / rate). e.g., 100M deposit + 1M/month → 100M + (12M / 0.05) = 100M + 240M = 340M.
Conversion-rate cap?
Housing Lease Protection Act §7-2: cap = min(BoK base rate + 2%, 10%) as of 2026. With base rate 3%, cap = 5%. Conversions above the cap are void and the tenant can claim reimbursement. This tool warns on exceedance.
Why a conversion rate?
A jeonse deposit is interest-free; rent is a fee. Reducing the deposit and switching to monthly creates an opportunity cost on the reduced deposit, monetized as monthly rent. The conversion rate is that annual yield.
Actual market rates?
Legal cap is around 5%, but market rates range 4–6% depending on tenant leverage. Popular areas tend lower, weak-jeonse areas higher. This tool uses the cap as default; adjust freely.
Management fee / broker fee?
Excluded. This tool calculates rent only. Use the "Real Estate Broker Fee Calculator" for fees.
Is my input sent to a server?
No. All computation runs in your browser; inputs are never sent over the network.
