S$400,000 Home Loan: Monthly Repayment and Total Interest
A S$400,000 home loan at 2.8% over 30 years costs S$1,643.58 a month. Over the full term you repay S$591,688.00, of which S$191,688.00 is interest.
Repayment by tenure
| Tenure | Monthly | Total interest |
|---|---|---|
| 20 years | S$2,178.56 | S$122,853.60 |
| 25 years | S$1,855.50 | S$156,649.40 |
| 30 years | S$1,643.58 | S$191,688.00 |
If rates change
| Rate | Monthly instalment |
|---|---|
| 2% | S$1,478.48 |
| 2.5% | S$1,580.48 |
| 3% | S$1,686.42 |
| 3.5% | S$1,796.18 |
| 4% | S$1,909.66 |
| 4.5% | S$2,026.74 |
Income needed
Under the 30% Mortgage Servicing Ratio for HDB flats, an instalment of S$1,643.58 needs a gross household income of at least S$5,478.59 a month. Under the 55% TDSR, it needs at least S$2,988.32 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
- Stamp duty is based on the purchase price or market value, whichever is higher.
- Using CPF for housing reduces what is left for retirement, and you must refund the amount used plus accrued interest when you sell.
- Budget for legal fees, valuation, renovation and moving costs on top of the downpayment and stamp duties.
- Seller's Stamp Duty can wipe out the gains on a quick resale, so check your holding period before selling.
Background
Stamp duties are paid upfront. Buyer's Stamp Duty applies to every purchase at tiered rates up to 6%, while ABSD depends on the buyer's residency status and how many residential properties they already own. Sellers who dispose of a property within the holding period pay Seller's Stamp Duty.
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stamp duties and monthly instalments, but using CPF reduces the money compounding for retirement, and the amount withdrawn plus accrued interest must be refunded to your CPF account when you sell.
Related calculations
- 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.
- HDB Loan Calculator: Calculates monthly repayments on an HDB concessionary loan, which is pegged at 0.1% above the CPF Ordinary Account rate (2.6% a year).
- Home Loan (Mortgage) Calculator: Estimates monthly repayments on a bank home loan for private property or HDB flats.
Model your own loan in the S$400,000 Home Loan Repayment Calculator.
Run your own numbers: S$400,000 Home Loan Repayment Calculator