How much can a rental agent charge in Seoul?
Estimate the legal brokerage-fee ceiling and your move-in cash. You can enter USD or CNY for convenience; Korean fee brackets are always calculated from the KRW equivalent.
Why the calculator still uses KRW internally
Seoul brokerage ceilings are defined by Korean transaction-value brackets. If you type USD or CNY, KoreaHomeGuide converts your inputs to KRW first, applies the Korean rule, and then converts the result back for display.
For monthly-rent contracts, the transaction value is generally deposit + monthly rent × 100. If that amount is below ₩50 million, deposit + monthly rent × 70 is used instead. Actual fees are negotiated within the legal ceiling.