How are Hong Kong mortgage repayments calculated?

The tool uses the standard amortising loan formula. The monthly rate is the annual rate divided by 12, and the repayment is the loan times that rate divided by one minus (1 plus the monthly rate) to the negative number of months. Every monthly payment is equal.

What LTV can I get in Hong Kong?

The HKMA sets loan-to-value caps. Standard mortgages are commonly capped at 70% for properties under about HK$10 million, with lower limits for higher-value homes. Higher LTV is possible through the mortgage insurance programme but adds an insurance premium.

What is an H-plan mortgage?

An H-plan prices your rate as HIBOR plus a margin (often around 1.3 to 1.5 percentage points), but caps it at a prime-linked rate so it never exceeds prime minus a set discount. You effectively pay the lower of the two, which is why HK rates track interbank rates closely.

What is the HKMA stress test?

The Hong Kong Monetary Authority requires lenders to check you could still afford repayments if rates rose by 2 percentage points. The tool shows the repayment at this stressed rate so you can see the buffer built into approval and judge your own headroom.

Does this include rates, fees or insurance?

No. It is a principal-and-interest estimate. Government rates and management fees, legal costs, valuation fees and mortgage insurance premiums are excluded, so budget extra. Use it to compare scenarios, not as a final approval figure.

Hong Kong Mortgage Calculator

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A Hong Kong mortgage calculator that models a home loan the way HK banks and the regulator treat it: your monthly repayment, the down payment implied by your loan-to-value ratio, total interest, and the repayment stress-tested at your rate plus the HKMA 2% buffer.

How it works

The loan is the price times your LTV; the down payment is the rest. Repayments use the standard amortising formula:

M = P * r / (1 - (1 + r)^-n)

where P is the loan, r is the monthly rate (annual rate divided by 12) and n is the number of months. Two local rules shape the result:

LTV cap — the HKMA commonly limits standard mortgages to 70% for homes under about HK$10m (lower above), so the tool flags an LTV over 70%.
Stress test — repayments are recalculated at your rate +2 percentage points, the HKMA’s affordability check, so you can see whether you still have comfortable headroom.

Hong Kong banks usually quote an H-plan: HIBOR plus a margin, capped by a prime-linked rate, so you pay whichever is lower.

Example and notes

Buy an 8,000,000 HKD flat at 70% LTV, 4.0% over 30 years. The loan is 5,600,000 HKD with a 2,400,000 HKD down payment, and the monthly repayment is about HK$26,738. Stress-tested at 6.0%, the assessed repayment rises to roughly HK$33,573 a month.

This is a principal-and-interest estimate; rates, management fees, legal costs and mortgage insurance are excluded. All figures are calculated locally in your browser.