TDSR Singapore Explained: How It Affects Your Mortgage Eligibility

This definitive guide from Homejourney demystifies TDSR Singapore, the total debt servicing ratio framework that caps your borrowing at 55% of income. Discover how TDSR calculation determines mortgage eligibility, real examples, and strategies to boost your capacity. As Singapore's trusted property platform prioritizing user safety and transparency, Homejourney equips you with verified tools like our bank rates page for confident decisions.[6][2]

Whether you're a first-time HDB buyer in Toa Payoh or upgrading to a condo in Orchard, understanding TDSR limit 55% is crucial amid 2026's cooling market. We'll cover regulations from MAS, practical calculations, and Homejourney's eligibility calculator to simulate your scenario instantly.

What is TDSR in Singapore?
TDSR vs MSR: Key Differences
How TDSR Calculation Works
The TDSR Framework and Limits
Real-World TDSR Examples
How to Improve Your TDSR and Eligibility
Homejourney Tools for TDSR Success
FAQ: TDSR Singapore Common Questions

What is TDSR in Singapore?

Total Debt Servicing Ratio (TDSR) is a MAS-mandated rule ensuring all your monthly debt repayments do not exceed 55% of your gross monthly income. Introduced on 29 June 2013, it promotes responsible borrowing amid high property prices in Singapore.[1][6]

TDSR Singapore applies to all property loans from financial institutions (FIs), including private banks like DBS, OCBC, and UOB. Unlike past policies focusing only on housing debt, TDSR considers your full debt picture—car loans, credit cards, even guarantor obligations.[2]

For joint applicants, banks aggregate total debt over total income. This levels the playing field but can surprise couples where one partner has existing debts. Homejourney verifies this via Singpass integration for accurate, safe assessments.[1]

Why 55%? It buffers against rate hikes and income volatility, stabilizing households. In 2022, MAS tightened from 60% to 55% to curb debt amid rising prices— a move still in effect in 2026.[2][6]

TDSR History and Updates

TDSR evolved through revisions, latest on 30 Sep 2022. It now uses a 4% interest floor for stress-testing, higher than current SORA rates around 3%. This conservative approach protects buyers in areas like Punggol or Sengkang HDBs.[1][2]

Exemptions exist for refinancing: owner-occupied properties skip TDSR if passing credit checks; investments require 3% principal paydown over 3 years. Always confirm with FIs, as they set internal limits.[1]

TDSR vs MSR: Key Differences for HDB and EC Buyers

MSR (Mortgage Servicing Ratio) caps HDB and unexpired EC housing payments at 30% of income, separate from TDSR's 55% total debt cap. Both apply, so HDB buyers face dual scrutiny.[2][6]

Aspect	TDSR	MSR
Limit	55% of gross income (all debts)	30% of gross income (housing only)
Applies to	All property loans	HDB/EC (MOP not met)
Stress Rate	4% floor	3.5% typically

HDB upgraders from Yishun flats often hit MSR first. Use Homejourney's calculator at https://www.homejourney.sg/bank-rates#calculator to test both.[2]

How TDSR Calculation Works: Step-by-Step

TDSR = (Total Monthly Debt Obligations / Gross Monthly Income) x 100. Must ≤55%.[6]

Gross Income: Fixed pay at 100%; variable (bonuses, rentals) haircut 30% over 12 months. Rental needs valid tenancy ≥6 months.[2][1]
Debts: All mortgages (pro-rated if joint), car loans, credit card minimums, 20% guarantor loans.[1]
Stress Test: Use 4% p.a. rate, shorter tenure: min(35y-private/30y-HDB minus age, 75 - income-weighted age).[1][2]
Assets Boost: SGD deposits (no cut), others 70% haircut over 48 months.[1]

Example: $10,000 income, $2,000 existing debt. New mortgage stress payment must fit within $3,500 (55%).

Income-Weighted Average Age Formula

For couples: (Age1 x Income1 + Age2 x Income2) / Total Income, rounded up. E.g., Husband 40 ($10k), Wife 30 ($5k): (40x10k + 30x5k)/15k = 37 years. Max tenure: 75-37=38y, capped by property age.[1]

The TDSR Framework: Tenure, Rates, and Exemptions

Banks project payments at 4%+ rates for realism. Current SORA ~3%, but TDSR assumes hikes. Tenure: Lower of property max minus disbursement years or age-based.[1]

The chart below shows recent interest rate trends in Singapore:

As seen, SORA volatility underscores TDSR's stress testing. Track live rates on Homejourney's bank rates page.[2]

Refinancing exemptions: Owner-occ skip TDSR; investments need 3% paydown. Not guaranteed—FIs like HSBC may reject high-geared cases.[1]

Real-World TDSR Examples: Singapore Scenarios

Single Buyer, Toa Payoh HDB ($800k): $8k income, no debt. MSR 30%=$2.4k; TDSR 55%=$4.4k. At 4%, ~$650k loan (75% LTV). Walk 5min from Braddell MRT Exit A.[3]

Income	Max Borrow (TDSR 55%, 4%, 30y)	Monthly Payment
$10,000	$1.35M	$6,500
$15,000 (joint)	$2.02M	$9,750
$8,000 + $2k car loan	$900k	$4,000 housing

Investor with Rental: $12k income incl. $3k rental (haircut to $2.1k). Existing condo loan $1.5k. New BTO EC in Tengah: Limited to $1.1M loan. Use Homejourney property search for budget fits.[1][2]

Insider tip: Self-employed? Banks average 24 months income, stricter haircuts. Prep IR8As early.

How to Improve Your TDSR and Mortgage Eligibility

Pay down debts: Clear credit cards first (min payments count 100%). Refinance car loans to lower instalments.[2]

Reduce Obligations: Consolidate, pay 20%+ on revolving credit.
Boost Income Proof: Stabilize variables; pledge assets for +income (e.g., $100k stocks = $625/mth).[1]
Timing: Apply post-bonus; wait 6 months after debt clearance.
Joint Apps: Add low-debt spouse, but watch weighted age.

For HDB in Bedok, combine with ABSD checks. See TDSR总债务偿还比率详解：如何提高申请成功率 | Homejourney for tips.

Disclaimer: This is general advice. Consult Homejourney mortgage brokers for personalized guidance. Rates as of 2026; subject to change.[2]

Homejourney Tools: Calculate TDSR and Apply Safely

Homejourney prioritizes your safety with verified data. Instant TDSR calculator at https://www.homejourney.sg/bank-rates#calculator factors MSR/TDSR, SORA trends.