MSR vs TDSR: What's the Difference and Why It Matters for HDB Buyers

When you're financing an HDB flat or Executive Condominium (EC), you'll encounter two separate borrowing limits: MSR and TDSR. Many buyers assume they're the same thing with different names. They're not, and confusing them can lead to borrowing more than you're eligible for, or worse, having your loan application rejected.

Here's the clearest breakdown of how both work, and why both matter.

The Core Difference

MSR (Mortgage Servicing Ratio): Caps the monthly mortgage repayment at 30% of gross monthly income. Applies only to HDB flats and new Executive Condominiums.

TDSR (Total Debt Servicing Ratio): Caps all monthly debt obligations, including your mortgage - at 55% of gross monthly income. Applies to all property loans.

The key distinction: MSR looks at your mortgage repayment alone. TDSR looks at every debt you have.

If you're buying an HDB flat or a new EC, you must satisfy both limits. Your loan has to pass the MSR check first, then the TDSR check.

MSR in Detail

MSR was introduced by MAS to ensure HDB and EC buyers don't overcommit on their housing loan. The cap is 30%, unchanged as of 2025.

Calculation: Monthly mortgage repayment ÷ Gross monthly income × 100 ≤ 30%

Example:

Household gross income: $8,000/month

MSR cap: $2,400/month

At a 4% stress-test rate over 25 years, a $2,400/month repayment supports a loan of approximately $456,000. That's your MSR ceiling for the housing loan.

MSR does not count your car loan, personal loan, or any non-property debt. It only looks at the housing loan being applied for.

TDSR in Detail

TDSR is a broader measure. It captures every debt obligation you carry: the new housing loan plus car loans, personal loans, outstanding credit card facilities, and any other property loans.

Calculation: (All monthly debt obligations including new mortgage) ÷ Gross monthly income × 100 ≤ 55%

Example using the same household:

Gross income: $8,000/month

TDSR cap: $4,400/month

Existing car loan repayment: $1,000/month

Maximum housing repayment under TDSR: $3,400/month

But recall: MSR already capped the housing repayment at $2,400. TDSR is less restrictive here, so the MSR cap governs.

Now add a personal loan of $800/month:

TDSR ceiling remaining for housing: $4,400 - $1,000 - $800 = $2,600/month.

In this case, TDSR still allows more than MSR, so MSR still governs.

If debts are high enough, TDSR becomes the binding constraint. Either limit can govern depending on your situation.

The Stress Test Rate

Banks don't use the actual market interest rate to calculate your loan eligibility. They apply a minimum stress-test rate of 4% for private property and 3% for HDB loans from HDB directly. This is set by MAS (as updated in September 2022) and ensures borrowers can still service the loan if rates rise.

Always calculate your eligibility at the stress-test rate, not the promotional rate the bank quotes you.

What About Variable Income?

Commission earners, business owners, and those with bonuses need to be aware: MAS allows only 70% of variable income to be counted in the TDSR and MSR calculation. If your base salary is $5,000 and your average monthly commission is $3,000, only $2,100 of that commission counts, giving you an effective income of $7,100 for calculation purposes, not $8,000.

Which Applies to EC With a Bank Loan?

For Executive Condominiums purchased from a developer (new launches), both MSR and TDSR apply. However, when buying a resale EC after its 5-year MOP, where it's treated more like a private property - only TDSR applies. This can increase borrowing capacity for resale EC buyers.

Our Take

Before you shortlist a single HDB or EC unit, calculate both your MSR and TDSR position. Know exactly what your monthly repayment ceiling is, and back-calculate the maximum loan amount you qualify for at the stress-test rate.

Most buyers who get surprises at the bank stage haven't done this pre-work. It takes 15 minutes and can save months of frustration.

Want us to run through your numbers? That's exactly what a planning session is for.

Frequently Asked Questions

Does MSR apply to private condo purchases?

No. MSR applies only to HDB flats and new Executive Condominiums. For private condos, only TDSR applies.

What is the MSR cap in Singapore as of 2025?

The MSR cap is 30% of gross monthly income. This has remained unchanged through 2025.

Does a car loan affect my HDB loan eligibility?

Not directly through MSR. MSR only counts the housing loan. But your car loan reduces your TDSR headroom, which can still constrain your maximum loan amount.

Can I use my spouse's income to increase my borrowing limit?

Yes. For joint applications, the combined gross income of both borrowers is used to calculate MSR and TDSR. Both parties' debt obligations are also included.

What stress-test rate do banks use for HDB loans in 2025?

For HDB loans from HDB directly, the stress-test rate is 3%. For bank loans, the rate is 4% or the prevailing interest rate, whichever is higher.

Not Sure What the Right Move Is for You?

Every property situation is different. If you're trying to work out what this means for your specific flat, income, or timeline, a planning session is the clearest way forward.

We'll look at your current numbers, map out your options, and give you an honest view of what each path looks like financially, no obligation, no pressure.

[Book a planning session with Serene & Mei →]