Tool
TDSR Calculator — How Much Can You Borrow?
Enter your income and add all your debts — car loans, credit cards, personal loans, everything. See how each one eats into your borrowing power.
Quick answer: With a $8,000 monthly income and no existing debts, you can borrow up to ~$921,000 at the MAS 4% stress test rate (30-year tenure). That supports a property up to ~$1.23M at 75% LTV. A $500/month car loan reduces your max loan by about $105K.
Combined gross income if applying jointly.
Existing Monthly Debts
The bank doesn't just look at your mortgage. They count everything.
Your TDSR
55.0%
Over limit — will not be approved
Max Monthly Mortgage Payment
$4,400
At 4% stress test rate
Max Property Price (75% LTV)
$1,228,839
TDSR cap: 55% of gross monthly income | MAS stress test rate: 4% p.a.
LTV: 75% (1st property, bank loan) | Max tenure: 35 years
Next step: Got your TDSR number. Now see the full upgrade picture — HDB equity, CPF, stamp duty, monthly payment.
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How TDSR Works
The Total Debt Servicing Ratio (TDSR) is a regulation by the Monetary Authority of Singapore (MAS) that limits your total monthly debt payments to 55% of your gross monthly income. It applies to all property loans from financial institutions.
Your TDSR calculation includes every recurring debt obligation: your proposed mortgage payment, car loans, personal loans, credit card minimum payments, student loans, and any other ongoing commitments. The bank adds them all up and checks if the total stays under 55%.
For the mortgage portion, banks must use the MAS stress test rate of 4% p.a. instead of the actual interest rate offered. This means even if your bank offers 2.5%, your affordability is assessed at 4%. The purpose is to ensure you can still afford payments if rates rise.
MSR vs TDSR — When Does MSR Apply?
The Mortgage Servicing Ratio (MSR) is an additional cap of 30% of gross monthly income that applies specifically to HDB flats and Executive Condominiums (ECs). Unlike TDSR which covers all debts, MSR limits just your mortgage payment.
If you're buying a private condo, only TDSR applies. If you're buying an HDB or EC, you need to pass both TDSR and MSR. In practice, for buyers with low existing debts, MSR is usually the binding constraint — it's the tighter limit.
| TDSR | MSR | |
|---|---|---|
| Cap | 55% | 30% |
| Covers | All debts + mortgage | Mortgage only |
| Applies to | All property types | HDB & EC only |
| Stress test rate | 4% p.a. | 4% p.a. |
How Debts Reduce Your Borrowing Power
Every dollar of monthly debt payment directly reduces how much you can borrow. Here's how common debts impact your maximum loan (at 4% stress test, 30-year tenure):
| Monthly Debt | Max Loan Reduction | Max Property Reduction |
|---|---|---|
| $500/mo (e.g. car loan) | ~$105K | ~$140K |
| $1,000/mo (e.g. car + personal) | ~$209K | ~$279K |
| $1,500/mo | ~$314K | ~$419K |
| $2,000/mo | ~$419K | ~$558K |
Based on 75% LTV for 1st property. Property reduction = loan reduction / 0.75.
TDSR Tips
1. Pay off debts before applying. Clearing a $500/month car loan before your mortgage application increases your max loan by ~$105K. If you can pay off outstanding debts, do it before applying — the math is dramatic.
2. Apply jointly. A co-borrower's income gets added to yours for TDSR calculations. Two incomes of $6,000 give you $12,000 gross — the same TDSR headroom as one person earning $12,000.
3. Extend your tenure. A longer tenure reduces your monthly payment, which means more room under TDSR. Going from 25 to 30 years can increase your max loan by 10-15%. But watch the age cap — age plus tenure cannot exceed 65 for full 75% LTV.
4. Cancel unused credit cards. Banks may factor in credit card limits (not just minimum payments) for TDSR. Cancelling cards you don't use removes potential liabilities from your assessment.
5. Check variable income rules. If part of your income is variable (commissions, bonuses), banks may only count 70% of that portion for TDSR. Get clarity from your bank on what they'll accept before house hunting.
FAQ
What is TDSR and how is it calculated?
TDSR (Total Debt Servicing Ratio) is a MAS regulation that caps your total monthly debt obligations at 55% of your gross monthly income. This includes your mortgage (calculated at the 4% stress test rate), car loans, personal loans, credit card minimum payments, and any other recurring debts.
What is the difference between TDSR and MSR?
TDSR (55%) applies to all property purchases and covers ALL your debts. MSR (30%) is an additional cap that applies only to HDB and Executive Condo (EC) purchases — it limits your mortgage payment alone to 30% of income. If you're buying an HDB or EC, you must pass both TDSR and MSR.
Why does the bank use 4% instead of my actual interest rate?
MAS requires banks to stress-test your loan at 4% p.a., regardless of the actual rate offered. This protects borrowers from future rate hikes. Even if your bank offers 2.5%, your TDSR is calculated as if you're paying 4%. This means you qualify for a smaller loan than you might expect.
How much can I borrow with a $10,000 monthly salary?
With $10,000 gross monthly income and no existing debts, the TDSR cap allows $5,500/month for all debts. At a 4% stress test rate over 30 years, this supports a maximum loan of about $1,152,000 — meaning a property up to roughly $1,536,000 at 75% LTV. Existing debts will reduce this amount.
Does paying off my car loan increase my borrowing power?
Yes, significantly. Every $500/month in debt payments reduces your maximum loan by roughly $105,000 (at 4% stress test, 30-year tenure). Paying off a $1,000/month car loan before applying could increase your borrowing capacity by about $209,000.
Related Tools & Guides
- Mortgage Calculator — monthly payment, interest, and amortization breakdown
- HDB to Condo Affordability Calculator — find your max condo budget after HDB sale
- Stamp Duty Calculator — BSD + ABSD breakdown for any property purchase
- TDSR Guide Singapore — the complete guide to TDSR rules and strategies
- Salary Needed for a Condo — minimum income for different condo price points
Last updated Feb 2026. This is an estimate — not financial advice. TDSR rules are set by MAS. Banks may have additional internal lending criteria.