Green Form Subsidised Home Ownership Scheme (GSH) Mortgage Calculator
Built for Green Form buyers. Borrow up to 95% LTV with no mortgage insurance and no interest-rate stress test; the debt-to-income ratio only needs to be within 50%.
GSH mortgage inputs
Monthly repayment
Loan amountHK$2,375,000 · Down paymentHK$125,000
Current debt-to-income ratio
GSH requirement: no more than 50%
Total interest
Stamp duty
Tax rate 0.00%
Total cost of buying
Includes down payment, taxes and repayments (no mortgage insurance)
Loan-to-value (LTV)
Government-guaranteed, up to 95% LTV
Estimated mortgage insurance premium
GSH exempt from mortgage insurance
Affordable property price based on income:With monthly income of HK$40,000 and a 50% debt-to-income ratio, maximum loan is aboutHK$3,995,018, corresponding to a property price of aboutHK$4,205,282.
The entered property price is affordable, but remember to set aside funds for renovation, management fees and maintenance reserves.
GSH is government-guaranteed and does not require mortgage insurance or an interest-rate stress test. The current debt-to-income ratio is below 50%, so it preliminarily meets bank approval conditions.
Compare how the remaining principal, cumulative principal repaid and cumulative interest change over time to see the impact of compounding on total cost.
Green Form tips:Green Form buyers can borrow up to 95% LTV, so the down payment hurdle is low, but still budget for stamp duty, legal fees, renovation and management fees. Unsubsidised units can usually only use prime-rate mortgages, and resale is restricted. Decide based on long-term owner-occupation needs.
Understanding GSH and Green Form Mortgages
The Green Form Subsidised Home Ownership Scheme (GSH) is a subsidised housing scheme launched by the Hong Kong Housing Authority, allowing eligible Green Form applicants to purchase new or recovered subsidised sale flats at lower prices. Green Form applicants include public housing residents, persons allocated public housing and citizens holding a valid Green Form Certificate. Compared with private housing, GSH's biggest advantage is that Green Form buyers can borrow up to 95% mortgage and do not need to pay mortgage insurance.
Because GSH has a government guarantee, banks approving Green Form mortgages only need to ensure the current debt servicing ratio does not exceed 50% (the HKMA suspended the +2 percentage point stress test from February 2024). The maximum repayment term can be 25 to 30 years depending on the project and bank policy. However, GSH has restrictions on resale and premium payment: before premium payment, it can only be sold at Green Form prices to eligible persons, and generally only the prime rate (P-rate) mortgage is available.
HK FinBox's GSH / Green Form mortgage calculator presets parameters suitable for GSH buyers, including a lower property price, 5% down payment, 25-year repayment term and HOS/GSH property type. The calculator automatically locks in the Green Form maximum 95% loan-to-value ratio, waives mortgage insurance and waives the interest-rate stress test, and shows the monthly payment, payment-to-income ratio, stamp duty and total home purchase cost.
Before applying for GSH, confirm your Green Form eligibility and income/asset limits. Although the down payment requirement is low, buyers still need to set aside funds for stamp duty, legal fees, renovation and management fees. In addition, GSH flats are unsubsidised units with restricted resale options before premium payment, so their capital appreciation potential may be lower than private housing. It is advisable to make the decision based on long-term self-occupation needs.
References
Rules and links last reviewed: 26 July 2026 · The sources above are for reference only; please refer to the latest official announcements from the relevant organisations.
FAQs
What is the Green Form Subsidised Home Ownership Scheme?
What is the maximum mortgage loan-to-value ratio for Green Form applicants?
Can GSH flats use H-rate mortgages?
What resale restrictions apply to GSH flats?
How is this calculator different from a normal mortgage calculator?
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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.