HIBOR mortgage calculator
With a HIBOR-based mortgage (often called an H plan), the rate is one-month HIBOR plus a margin, and the offer may set a cap rate.
Enter your loan, term, margin and cap to see the rate you'd pay today and the monthly repayment.
How it's calculated
- Take the latest one-month HIBOR fixing published by the HKMA: 2.6386% on 12 November 2026.
- Add your margin. If the result is above your cap rate, the cap applies instead.
- The monthly repayment comes from the standard formula for a loan repaid in equal monthly instalments.
An example
A $4 million loan over 30 years with a 1.3% margin and a 3.5% cap: when HIBOR plus the margin is above 3.5%, you pay 3.5%, about $17,962 a month.
Frequently asked questions
What is one-month HIBOR today?
The latest fixing in this calculator is 2.6386%, for 12 November 2026, from the HKMA's daily monetary statistics.
Why does my payment change?
Because HIBOR moves every business day. When HIBOR plus your margin is below the cap, your rate follows it.
Where do I find my margin and cap?
In your mortgage offer from the bank.
Key terms
- HIBOR
- Hong Kong Interbank Offered Rate, the rate at which banks lend to each other in Hong Kong dollars.
- Cap rate
- The highest rate your HIBOR mortgage can charge, set in your loan offer.
Up-to-date official data
One-month HIBOR fixing: updated , with the latest figure from Hong Kong Monetary Authority.
We check the official sources automatically, every day.
See all sources