If you have looked into a property loan in Singapore, you have probably seen the term TDSR. It is one of several rules designed to keep borrowing sustainable and protect households from over-stretching.
This guide explains TDSR and related affordability concepts in plain English. It is general educational information, not financial advice, and the exact rules and thresholds are set by the authorities and can change.
Key points
- TDSR limits total monthly debt repayments to a share of your gross monthly income.
- It applies across your debts, not just the new loan you are seeking.
- MSR is a separate cap that applies to certain property purchases.
- The rules exist to keep borrowing affordable and sustainable.
- Thresholds are set by regulators and may be updated over time.
What TDSR actually measures
The Total Debt Servicing Ratio compares all your monthly debt repayments against your gross monthly income. The idea is simple: your combined repayments should not exceed a set portion of what you earn.
Because it looks at total debt, things like car loans, personal loans and credit-card obligations all count alongside any new loan you are applying for.
TDSR vs MSR — what's the difference?
TDSR is the broad affordability rule across all your debts. The Mortgage Servicing Ratio (MSR) is a narrower cap that applies to specific types of property purchases, limiting how much of your income can go toward the home loan alone.
| TDSR | MSR | |
|---|---|---|
| Scope | All monthly debt repayments | Property loan repayment only |
| Applies to | Most loan types | Certain property purchases |
| Purpose | Overall affordability | Limits housing loan burden |
A simple worked example
Imagine a borrower with a gross monthly income of S$6,000. Suppose the applicable TDSR threshold means total monthly repayments should stay within a set share of that income.
If existing commitments (say a car loan and credit-card minimums) already take up part of that allowance, only the remainder is available for a new loan repayment. This is why reducing existing debt before applying can increase what you may qualify for.
- Add up all your current monthly debt repayments.
- Compare them against the applicable share of your gross income.
- The gap that remains is what's available for new borrowing.
- Lenders also apply their own stress assumptions and checks.
Why these rules exist
Affordability frameworks like TDSR are there to keep borrowing sustainable — both for individuals and the wider financial system. They encourage people to borrow within their means and reduce the risk of repayment stress if circumstances change.
The exact percentages and how income is assessed are set by the authorities and can be revised, so always check the current rules when you apply.
Practical tips
- Tally your existing monthly repayments before you apply.
- Reducing existing debt can increase your available borrowing room.
- Remember variable income may be assessed conservatively.
- Check the current official thresholds — they can change.
- Use a loan calculator to sanity-check affordability first.
Final thoughts
TDSR and related rules aren't there to block you — they exist to keep borrowing within healthy limits. Understanding them helps you plan realistically and avoid surprises.
This is general information only. Your eligibility is always assessed by participating financial institutions and our Network Partners against the rules in force at the time.
