Mortgage Refinance Cost Calculator
Compare monthly payments, full remaining-term repayments, cash rebates and refinance costs to estimate net savings and the break-even period.
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Refinance parameters
Net benefit
Monthly change HK$979
Rebate and fees (net HK$5,500)
Estimated net saving from refinancing
Full remaining terms compared
Monthly repayment falls by HK$979 after refinancing; net gain after costs is HK$229,418, about 6 months to break even.
Switching outlay
HK$25,500
Penalty, legal and valuation
After cash rebate
HK$5,500
Break-even about 6 months
View costs and break-even details
Current monthly repayment
New monthly repayment
Monthly saving
Total savings
Total costs
After cashback deduction
Break-even months
Break-even period
Is it worthwhile?
Monthly repayment falls by HK$979 after refinancing; net gain after costs is HK$229,418, about 6 months to break even.
Rate spread
Current interest rate minus new interest rate
Cash rebate is often subject to a lock-in. If you sell or refinance again during that period, the bank may claw back part or all of the rebate. This page does not assume a clawback schedule; check the new facility letter before treating the rebate as cash in hand.
Hong Kong remortgage: rate gap, costs and break-even
A remortgage moves the same remaining loan to another bank. The useful comparison is not the advertised rate. It is what the current loan costs from today to the end of its remaining term, what the new loan costs from today to the end of its term, then cash rebate, penalty, legal fees and valuation.
A lower monthly payment is not automatically a saving. Stretching a remaining 10-year loan to 25 years can cut the instalment even if the rate barely changes, while extra years of interest wipe out the difference. This page therefore compares the full remaining repayment on both sides, and also shows the same-term estimate when the new term is longer.
Enter the outstanding balance, current rate and remaining years, then the new rate, new term, rebate and fees. The tool does not estimate a cash-out top-up, property valuation or a higher loan amount.
Ask the existing bank for a redemption quote on a stated date, and check daily interest, penalty, administration fees and any rebate clawback. Ask the new bank about the rebate lock-in, legal arrangement and approval conditions. If you may sell or refinance again soon, the break-even period matters more than the first lower instalment.
Related guide
Hong Kong Mortgage Refinance Costs, Cashback and Break-Even Guide
Compare refinancing cashback, legal fees, early-repayment penalties and net break-even time.
Read the guideData status
Residential stamp-duty rates effective 2026-02-26; mortgage data checked 2026-08-09
Residential AVD bands, subsidised-housing LTV limits and mortgage-insurance framework follow government, Housing Authority and HKMCI information.
Rates, bank approval, valuation, income, term and property price are user assumptions; stress-test results are for planning only.
Excludes some bank rebates, developer incentives, renovation, management fees, rates and government rent, extra legal fees and case-specific insurance loadings.
2026-08-08: Rechecked the residential stamp-duty bands effective 26 February 2026 and current LTV limits, and adopted HKMCI's official premium table effective 16 October 2024.
References
Site data last reviewed: 2026-08-09 · The sources above are for reference only; please refer to the latest official announcements from the relevant organisations.
Think a figure, rule or source needs updating? Report this pageFAQs
What is refinancing?
Does this tool calculate cash-out refinancing?
What costs are involved in refinancing?
Is the cash rebate received directly?
When is refinancing suitable?
把年期拉長是否等於慳錢？
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Client-side only: All data is calculated on your device and is not uploaded to any server. Results are for reference only and do not constitute professional financial or legal advice.