Jeonse Monthly Conversion Calculator

Convert deposit differences into monthly rent, or monthly rent differences into equivalent deposit amounts.

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Conversion inputs

Use a user-entered annual conversion rate to convert between deposit and monthly rent.

Conversion mode

Current deposit

KRW

300M KRW

Current monthly rent

KRW

Target deposit

KRW

200M KRW

Target monthly rent

KRW

700K KRW

Annual conversion rate

Enter a value above 0 to calculate the conversion.

Management fee

KRW

100K KRW

Converted estimate

Monthly and annual housing costs are shown separately.

Converted monthly rent₩416,667416.67K KRW

Converted deposit₩200,000,000200M KRW

Annualized housing cost₩6,200,0006.2M KRW

Monthly payment difference₩416,667416.67K KRW

Formula: deposit difference × annual conversion rate ÷ 12.

Management fee is included only in annualized housing cost, not in the rent conversion formula.

This uses the annual conversion rate you entered. It does not automatically load statutory conversion rates or market rates.

About Jeonse Monthly Conversion Calculator

Convert a deposit difference into monthly rent using a rate you supply.

Choose deposit-to-rent or rent-to-deposit, enter current and target amounts, and use a positive annual conversion rate.

Compare rent plus management fees as a housing-cost scenario. Confirm whether the rate is lawful for the actual agreement.

The calculation or rendering runs in this browser tab. Copy, download and share actions make the chosen output available outside this tab.

Worked example

Input / settings: Deposit 300,000,000 → 200,000,000 KRW; current rent 0; annual rate 5%; fee 100,000/month
Action: Convert deposit to rent
Result: Rent about 416,667 KRW/month; annual rent plus fees 6,200,000 KRW.

Calculation model

New monthly rent = current rent + (current deposit−target deposit) × annual rate / 12.

Target deposit = current deposit − (target rent−current rent) × 12 / annual rate. Annual cost = (rent + monthly management fee) × 12.

Scope and limits

The 5% sample is not a verified legal ceiling. For applicable deposit-to-monthly-rent conversions, the statutory limit uses the lower of 10% and the Bank of Korea base rate plus 2 percentage points. This tool does not fetch the base rate, enforce that limit or decide legal applicability.

Frequently asked questions

Is converting rent back into deposit legally symmetric?: The arithmetic is reversible, but the legal rule concerns specified deposit-to-rent conversions. Negotiation, contract type and legal applicability require separate checking.

Sources and review dates

Housing Lease Protection Act, Article 7-2 Reviewed 2026-09-17
Legal scope of the deposit-to-monthly-rent ceiling.
Housing Lease Protection Act Enforcement Decree, Article 9 Reviewed 2026-09-17
10% and base-rate-plus-2-percentage-point parameters; no live base rate is supplied here.

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