Confused by 1M and 3M SORA? Here's How These Rates Could Shape Your Mortgage and Property Moves in Singapore

Table of Contents:

1. Introduction: Why SORA Matters to You
2. What Exactly Is SORA?
3. The Rise of SORA: Replacing SIBOR and SOR
4. 1M vs 3M SORA: What Do They Mean?
5. How Banks Use SORA to Price Home Loans
6. Key Differences: 1M vs 3M SORA Side-by-Side
7. Who Should Consider 1M SORA Loans?
8. When Is 3M SORA the Smarter Choice?
9. Case Study: 1M vs 3M SORA Loan Comparison (Real Numbers)
10. Factors to Consider Before Choosing a SORA-Pegged Loan
11. How SORA Impacts Refinancing Strategy
12. Tips for Managing Your Mortgage in a SORA-Based Market
13. Frequently Asked Questions (FAQ)
14. Common Myths: Debunking Misconceptions Around SORA

Why SORA Matters to You The loan interest rate you choose can have a significant impact on your financial future. One of the most important factors to understand? The type of benchmark rate your mortgage is pegged to.

In 2021, Singapore transitioned away from SIBOR and SOR, moving towards a more transparent and reliable benchmark: SORA. If you've ever come across terms like "1M SORA" or "3M SORA" and felt unsure, you're not alone. These aren't just technical finance lingo — they directly affect how much you pay each month and how your mortgage behaves over time.

What Exactly Is SORA? SORA stands for Singapore Overnight Rate Average. It's the volume-weighted average rate of borrowing transactions in Singapore's unsecured overnight interbank market. Simply put, it's the average cost for banks to lend money to each other overnight.

SORA is administered by the Monetary Authority of Singapore (MAS) and is considered:

• Transaction-based: Derived from actual transactions rather than estimates
• Transparent: Publicly available on MAS’s website daily
• Stable: Less prone to manipulation than its predecessors

The Rise of SORA: Replacing SIBOR and SOR Until recently, most housing loans in Singapore were pegged to SIBOR (Singapore Interbank Offered Rate) or SOR (Swap Offer Rate). However, global financial reforms have driven a shift towards benchmarks like SORA that are more transparent and robust.

MAS announced a roadmap to transition all SIBOR and SOR-linked loans to SORA by end-2024. Most major banks have already adjusted their new loan packages accordingly.

1M vs 3M SORA: What Do They Mean?

• 1M SORA (1-Month SORA): Your loan interest rate is revised every month based on the latest SORA rate.
• 3M SORA (3-Month SORA): Your interest rate is reviewed every three months instead.

Both are floating rate structures, but the frequency of revision is the key difference.

How Banks Use SORA to Price Home Loans When you take a home loan pegged to SORA, it typically looks like this:

[Loan Interest Rate] = SORA (1M or 3M) + Bank Spread

For example:

• If the 1M SORA is 3.60% and the bank spread is 0.80%, your effective rate is 4.40%
• If the 3M SORA is 3.62% with the same spread, the effective rate is 4.42%

The bank spread (or margin) is fixed for the lock-in period, but SORA can fluctuate based on market conditions.

Key Differences: 1M vs 3M SORA Side-by-Side

Who Should Consider 1M SORA Loans? A 1M SORA-pegged loan might be suitable if:

• You expect interest rates to decline
• You can handle monthly fluctuations
• You plan to refinance within a short timeframe
• You actively monitor market trends and are financially agile

When Is 3M SORA the Smarter Choice? You may prefer 3M SORA if:

• You value consistent monthly repayments
• You have a tighter household budget
• You’re purchasing a property for long-term stay
• You prefer predictability over marginal savings

Case Study: 1M vs 3M SORA Loan Comparison (Real Numbers) Let's assume:

• Loan amount: $600,000
• Tenure: 25 years
• Bank Spread: 0.80%
• 1M SORA: 3.60% | 3M SORA: 3.62%

The difference might seem minor — but in volatile markets, 1M SORA could dip and create more savings. Conversely, it could rise and increase your cost.

Factors to Consider Before Choosing a SORA-Pegged Loan

• Your risk appetite: Are you comfortable with rate changes?
• Loan tenure: Shorter tenures might justify more aggressive rate structures
• Lock-in period: Can you refinance if rates spike?
• Prepayment plans: Will you make lump-sum payments that reduce interest burden?

How SORA Impacts Refinancing Strategy If you already have a mortgage pegged to SIBOR or a board rate, refinancing to a SORA-based loan could lower your interest — especially in today’s elevated rate climate.

Tip: Chat with Moshin to find out if switching makes sense for your profile. We'll help you assess your break-even point after factoring in legal, valuation, and clawback costs.

Tips for Managing Your Mortgage in a SORA-Based Market

• Set aside 10–15% buffer in your budget for rising rates
• Review your mortgage every 2–3 years (especially after lock-in ends)
• Monitor MAS daily SORA rates: MAS Official Site
• Ask your bank about free repricing opportunities

Frequently Asked Questions (FAQ) 

Q1: Can I switch between 1M and 3M SORA later? Yes, via repricing or refinancing, depending on your lender’s terms.

Q2: Is SORA better than fixed rates? It depends. Fixed rates offer certainty, but SORA could result in lower costs over time, especially if interest rates drop.

Q3: Is there a lock-in period for SORA loans? Most packages include a 1–3 year lock-in. Always check your Letter of Offer.

Q4: Can foreigners take SORA-based loans? Yes, most local banks offer these packages to foreigners purchasing residential properties.

Common Myths: Debunking Misconceptions Around SORA 

Myth 1: 1M SORA is always cheaper. Truth: Not always. It depends on market trends.

Myth 2: 3M SORA is fixed for 3 months. Truth: It’s reviewed every 3 months — but can still rise over time.

Myth 3: SORA loans don’t fluctuate much. Truth: Like any floating-rate structure, they still track macroeconomic shifts.

Myth 4: You can’t refinance out of SORA. Truth: You can, subject to lock-in clauses and fees.

Myth 5: All banks offer the same SORA package. Truth: Bank spreads vary — even 0.2% can cost thousands over the years.

Making SORA Work for You At the end of the day, choosing between 1M and 3M SORA isn’t about which is "better" — it’s about which matches your financial habits and goals.

Ask yourself:

• Do I need stability in repayments?
• Am I watching the interest rate environment closely?
• Am I planning to refinance in a few years?

SORA offers clarity and transparency in a shifting economic climate — but it requires active decision-making. Don’t leave your mortgage to chance.

Still unsure which SORA package fits your needs? Chat with Moshin. Our AI-powered mortgage expert will walk you through your options step-by-step — no jargon, no pressure.