S$800,000 Hdb Loan: Monthly Repayment and Total Interest
A S$800,000 HDB loan at 2.6% over 25 years costs S$3,629.36 a month. Over the full term you repay S$1,088,806.82, of which S$288,806.82 is interest.
Repayment by tenure
| Tenure | Monthly | Total interest |
|---|---|---|
| 10 years | S$7,578.03 | S$109,363.09 |
| 15 years | S$5,372.05 | S$166,969.86 |
| 20 years | S$4,278.30 | S$226,793.06 |
| 25 years | S$3,629.36 | S$288,806.82 |
If rates change
| Rate | Monthly instalment |
|---|---|
| 2% | S$3,390.83 |
| 2.5% | S$3,588.93 |
| 3% | S$3,793.69 |
| 3.5% | S$4,004.99 |
| 4% | S$4,222.69 |
| 4.5% | S$4,446.66 |
Income needed
Under the 30% Mortgage Servicing Ratio for HDB flats, an instalment of S$3,629.36 needs a gross household income of at least S$12,097.85 a month. Under the 55% TDSR, it needs at least S$6,598.83 with no other debts. Banks test affordability at a higher stress-test rate, so the real requirement is higher for bank loans.
Things to check
- HDB loans are capped at 25 years and must be fully repaid by age 65.
- Seller's Stamp Duty can wipe out the gains on a quick resale, so check your holding period before selling.
- Budget for legal fees, valuation, renovation and moving costs on top of the downpayment and stamp duties.
- Using CPF for housing reduces what is left for retirement, and you must refund the amount used plus accrued interest when you sell.
Background
Beyond the price, buyers should budget for legal fees, valuation, home insurance, renovation and furnishing. Running the figures in advance helps you decide how much cash to hold back and whether a smaller loan or longer tenure makes more sense.
CPF Ordinary Account savings can pay for the downpayment, stamp duties and monthly instalments, but using CPF reduces the money compounding for retirement, and the amount withdrawn plus accrued interest must be refunded to your CPF account when you sell.
Singapore's property market is shaped by cooling measures introduced since 2009, including Additional Buyer's Stamp Duty, loan-to-value limits and debt servicing ratios. These rules are adjusted when the market runs hot, so the numbers you see today may differ from what friends paid a few years ago.
Related calculations
- Buyer's Stamp Duty (BSD) Calculator: Calculates Buyer's Stamp Duty on a Singapore residential property using the tiered rates from 1% to 6%.
- Additional Buyer's Stamp Duty (ABSD) Calculator: Calculates ABSD by buyer profile and the number of residential properties owned, using the rates in force since 27 April 2023.
- Total Property Stamp Duty Calculator: Adds BSD and ABSD together so you know the full stamp duty bill before you sign an option to purchase.
- Seller's Stamp Duty (SSD) Calculator: Calculates SSD for residential property bought on or after 4 July 2025 and sold within four years.
Model your own loan in the S$800,000 HDB Loan Repayment Calculator.
Run your own numbers: S$800,000 HDB Loan Repayment Calculator