Home Loans in Singapore: How to Calculate Affordability?

Home Loans in Singapore: How to Calculate Affordability?
For many, buying a home is one of the biggest milestones in their lives. This is why understanding home loan affordability is key for a smooth homeownership journey.
With property prices, bank regulations, and mortgage terms constantly shifting, being well-informed and careful planning are needed to make smarter decisions to save you money and stress. This article will guide you through the key terms, factors, and steps that go into calculating affordability for a home loan in Singapore.
Home Loan Terms Every Singapore Homebuyer Should Know
Before diving into loan comparisons and calculations, it’s essential to understand the common terms you’ll encounter when applying for a housing loan:
- Home loan is a loan provided by banks or financial institutions to help you finance your property purchase.
- Home loan interest rate is the percentage charged on your outstanding loan amount. In Singapore, interest rates can be either:
- Fixed (unchanging over a set period) or
- Floating (subject to market fluctuations).
Fixed rates provide stability, while floating rates can be riskier due to the volatility, but can save you money if the interest rates trend down for prolonged periods.
- Loan tenure is the period over which you repay your loan. A longer tenure lowers monthly repayments but increases total interest paid.
- Mortgage Servicing Ratio (MSR) and Total Debt Servicing Ratio (TDSR) are regulatory limits that cap the proportion of your monthly income that can go toward housing and overall debt obligations.
The next step is checking whether you can qualify for a loan to buy your dream home. This is where affordability comes into play. You need to measure how much you can borrow without overstretching your finances and be comfortable in making repayments during your loan tenure.
What Are the Key Factors Affecting Housing Loan Affordability

Banks and financial institutions in Singapore assess multiple factors before approving a housing loan, such as:
- Monthly Income: Determines how much you can borrow and repay sustainably.
- Loan Tenure: Extending your tenure lowers monthly repayments but increases interest over time. A shorter tenure can make you debt-free faster but your monthly repayment amount will increase.
- TDSR: This limits your total monthly debt obligations to 55% of your gross monthly income.
- MSR: Caps property-related repayments to 30% for HDB and executive condominiums.
- Property Price and Loan-to-Value (LTV) Ratio: The higher the property price, the more you’ll need to borrow. LTV also limits (up to 75% for first loans) the maximum loan amount you can secure.
All these factors shape how banks assess your affordability and determine your maximum eligible loan.
Comparing Home Loan Interest Rates
When it comes to home loan rates in Singapore, comparison is key to securing the best deal for your property financing. Home loan rates can vary widely across lenders as each package has different terms for repayment flexibility, lock-in periods, and refinancing options. These aspects should be considered as it can affect your affordability.
To identify the best mortgage options, use mortgageplus’s rate comparison tools to quickly review and compare current home loan rates in Singapore. This makes it easier to weigh not just the headline interest rate but also hidden costs or conditions attached to each package.
Estimating Affordability: Step-by-Step Calculations

Once you understand the basics, estimating your loan affordability can be a breeze if you follow these steps:
- Estimating Maximum Loan Amount: Based on your income, TDSR, MSR, and property price, banks will calculate the maximum loan amount you qualify for.
- Calculate Monthly Repayments: Calculate how much you need to pay monthly utilising mortgageplus’s calculators for a clear breakdown of affordability and total loan costs.
- Factor in Additional Costs: Consider expenses like insurance, stamp duties, and maintenance.
Get the Best Home Loan in Singapore with mortgageplus!
Understanding affordability and home loan interest rates are crucial when buying property. But to confidently secure your dream home, advice from a mortgage consultant can go a long way, not just to purchase property but to also save money in the long run.
At mortgageplus, we provide the resources you need to make smarter, informed choices, from mortgage calculator tools to expert home loan advisors. Take the first step towards homeownership today by contacting us for a free consultation.