Home Loans 101: How Much Can You Really Borrow?

Before you shortlist a single unit, the honest starting point is a financing conversation, not a viewing. Three regulatory limits — TDSR, MSR (for HDB/EC), and LTV — decide your ceiling long before any bank quotes you a rate. Here's how each one works, in plain terms, and where to run the actual numbers.

The three limits that decide your ceiling

TDSR (Total Debt Servicing Ratio): under MAS's framework, all your monthly debt obligations — the new home loan plus car loans, student loans, credit card minimums, and any other property loans — cannot exceed 55% of your gross monthly income. This applies to every residential property purchase in Singapore, HDB or private.

MSR (Mortgage Servicing Ratio): if you're buying an HDB flat or an Executive Condominium directly from a developer, there's a second, tighter cap — your home loan instalment alone cannot exceed 30% of gross monthly income. MSR sits inside TDSR; you need to clear both.

LTV (Loan-to-Value limit): this caps how much of the purchase price a bank loan can cover. The exact tier depends on how many outstanding home loans you already have and the loan tenure — first-time bank loan borrowers with a shorter tenure and no other mortgages typically qualify for the highest tier; a second loan, a longer tenure relative to your age, or an existing mortgage all step the tier down. The remainder of the price has to be covered by CPF, cash, or a mix.

Why your "affordable" number is usually lower than you think

Two things quietly shrink the number most buyers have in their head:

• Stress-testing. Banks don't assess TDSR/MSR against today's rate — they use a higher, MAS-mandated medium-term rate, so your qualifying loan amount is based on a more conservative monthly instalment than what you might actually pay at the current rate.
• Existing obligations. A car loan, a large credit card balance, or a guarantor role on someone else's loan all count against your TDSR ceiling, even if you never miss a payment.

What actually goes into the upfront cost

Beyond the loan itself, budget for: the down payment (cash and/or CPF, depending on LTV tier), Buyer's Stamp Duty on every purchase, Additional Buyer's Stamp Duty if it applies to your profile, legal fees, and — for private property — the option fee and exercise fee before the main purchase agreement.

A practical order of operations

1. Get an In-Principle Approval (IPA) from a bank before you make an offer — it tells you your realistic loan quantum, not just a rough estimate.
2. Run your numbers through a TDSR/MSR and BSD/ABSD calculator so you know your ceiling before you fall in love with a unit above it.
3. Separate "comfortable" from "stretch" — a loan that clears TDSR isn't automatically a monthly instalment you'll be comfortable paying for the next 25–30 years.

None of this is a substitute for a proper conversation with a banker or mortgage broker about your specific income, obligations, and the property you're considering — this article explains the framework, not your personal affordability.

This is general educational context based on the prevailing MAS TDSR/MSR framework and HDB/LTV rules as at the publish date above, not financial advice. Figures illustrative — confirm current percentages and rates with your bank or mortgage adviser before making a decision.