Mortgage Calculator
Enter the property price, your downpayment, the interest rate and the loan tenure: you'll see the monthly instalment, the total interest and the gross monthly income needed for the instalment to fit within the 30% Mortgage Servicing Ratio. Open «More options» to test a partial prepayment.
More options
General values (Singapore). They don't account for regional rules or other costs that may apply. Check them with your lender or advisor.
Rate discounts for bank products
Enter the rate above with every discount applied. Here, each product the bank asks for: how much it lowers the rate and what it costs a year. The discount is assumed to last the whole term.
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Count as cost what you pay extra for having it with the bank: if the same insurance costs $150 elsewhere and the bank's costs $250, that's $100. If the premium rises over the years, as life insurance does, enter the average.
Enter the price, downpayment, interest rate and loan tenure.
The instalment is principal plus interest: it doesn't include insurance, property tax or conservancy and maintenance fees.
Yearly repayment schedule
Enter the price, downpayment, interest rate and loan tenure.
Results are estimates. Solvemis accepts no responsibility for the results obtained or for how they are used. Always double-check the result and talk to a qualified professional before making decisions.
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How it works
How to use it
- Enter the property price and your downpayment.
- Add the annual interest rate and the loan tenure in years.
- Open «More options» to change the repayment type or buying costs, or to add a partial prepayment.
- Check the monthly instalment, the total interest, the cash and CPF needed upfront and the yearly schedule.
How it is calculated
The monthly rate is the annual rate divided by 12, and the loan is simulated month by month. If the rate changes after some years, the payment is recalculated in the year it changes, on the outstanding balance and the months left. Prepayments are applied at the end of the chosen year. The income needed tests the instalment at the higher of your rate and 4%, the floor MAS sets for banks, against the share of income. Buying costs, share of income and loan-to-value limit are general values for Singapore that you can change. With rate discounts, the rate you enter is the one you pay with every product; without each one, the rate goes up by its discount (also after a rate change) and the extra interest is compared with its cost over the years the mortgage lasts.
Instalment = L · i / (1 − (1 + i)^−n) · L = loan, i = annual rate ÷ 12, n = months
Sources
- Buying a property: How much can you afford? — MoneySense (Government of Singapore)
- Calculating TDSR for Property Loans — Monetary Authority of Singapore
- CPF interest rates from 1 July to 30 September 2026 — Central Provident Fund Board
- Buyer's Stamp Duty (BSD) — Inland Revenue Authority of Singapore (IRAS)
About this calculator
An example with an HDB flat
A S$600,000 resale flat with a 25% downpayment leaves a S$450,000 loan. At 2.6% over 25 years the instalment is S$2,041.51 a month, and the total interest comes to about S$162,454. Assessed at 4%, the instalment would be S$2,375.27, so the 30% Mortgage Servicing Ratio needs a gross income of about S$7,918 a month. The chart shows each year’s interest in blue.
Prepayments: shorter tenure or lower instalment
When you make a partial prepayment, you choose what goes down. Shortening the tenure keeps the instalment and pays the loan off sooner, which usually saves the most interest. Lowering the instalment keeps the tenure. HDB loans have no penalty for repaying early; bank loans may charge a fee, especially during the lock-in period.
What the values for Singapore don’t cover
The 75% loan-to-value limit applies to a first housing loan whose tenure is up to 25 years for an HDB flat (30 years for other property) and ends by age 65; otherwise the limit drops to 55%. With a bank loan, at least 5% of the price must be paid in cash. The 30% limit only applies to HDB flats and to ECs within their minimum occupation period. For private property the limit is the 55% Total Debt Servicing Ratio, which counts all your debts, so set the share of income to 55% minus your other monthly repayments.
Buyer’s stamp duty is 1% on the first S$180,000, 2% on the next S$180,000 and 3% on the next S$640,000: S$12,600 on a S$600,000 flat. Legal fees and valuation come on top, and permanent residents, foreigners and buyers who already own a home also pay Additional Buyer’s Stamp Duty. The 3% filled in is a general value: check it with your bank or HDB.
Frequently asked questions
What income do I need for an HDB flat or an EC?
For an HDB flat or an executive condominium, the monthly instalment can't be more than 30% of your gross monthly income (the Mortgage Servicing Ratio). Banks work it out at the higher of your loan rate and 4%, and the calculator does the same.
HDB loan or bank loan?
HDB loans are only for HDB flats. Their rate is 0.1 percentage points above the CPF Ordinary Account rate (2.6% in the third quarter of 2026), the tenure is up to 25 years and there is no penalty for repaying early. Bank loans can be fixed or floating, run up to 30 years for HDB flats and 35 for private property, and may charge fees for repaying early.
What doesn't the instalment include?
Only principal and interest. Property tax, fire and mortgage insurance, and conservancy or maintenance fees come on top, and buying costs such as stamp duty and legal fees are paid upfront.
Is it worth taking the bank's products to get a lower rate?
It depends on what they cost. Under «Rate discounts for bank products», in «More options», enter the discounted rate (with every product) as the interest rate and, for each product, such as insurance, a card or having your salary paid into the account, how much it lowers the rate and what it costs a year. You'll see how much interest each one saves and whether it's worth it; if you don't know the cost, how much it could cost a year and still pay off. Count as cost only what you pay extra for having it with the bank: if the same insurance is cheaper elsewhere, the difference.
Updated 20 October 2026
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