How to Calculate If Refinancing is Worth It: Your Singapore Homeowner's Guide
Refinancing your home loan can save you thousands of dollars—but only if the numbers work in your favour. The key to making this decision with confidence is understanding how to calculate whether refinancing is actually worth it for your specific situation. This guide walks you through the exact methodology used by mortgage professionals, with practical examples tailored to Singapore's current interest rate environment.
Understanding the Refinancing Decision
Refinancing means replacing your existing home loan with a new one, typically at a lower interest rate. While this sounds straightforward, the financial reality is more nuanced. You'll incur upfront costs—legal fees, valuation charges, and potentially clawback penalties—that must be offset by your monthly savings before refinancing becomes worthwhile.
At Homejourney, we believe informed decisions start with transparent information. That's why we've built tools and resources to help you evaluate refinancing opportunities accurately, ensuring you understand both the benefits and the true costs involved.
The Break-Even Analysis: Your Essential Calculation
The break-even point is the moment when your cumulative monthly savings equal your total refinancing costs. Until you reach this point, you're operating at a loss. After this point, every month represents pure savings.
Here's the formula:
Break-Even Period (months) = Total Refinancing Costs ÷ Monthly Savings
Let's work through a realistic Singapore example:
- Current loan: S$500,000 at 3.5% interest rate, 20 years remaining
- Current monthly payment: S$2,864
- New loan: S$500,000 at 2.8% interest rate, 20 years
- New monthly payment: S$2,626
- Monthly savings: S$238
Now for the costs. Based on current Singapore bank practices, refinancing typically costs:
- Legal fees: S$800–S$1,200
- Valuation fee: S$600–S$1,000
- Early redemption fee (if applicable): 0.75%–1.5% of outstanding loan
- Clawback penalty (if within lock-in period): varies by bank
In this example, assume total costs are S$3,500 (including a modest redemption fee). Your break-even calculation would be:
S$3,500 ÷ S$238 = 14.7 months
This means you'd recover your refinancing costs in approximately 15 months. If you plan to stay in the property for at least 2–3 years, refinancing is likely worth it.
Identifying All Refinancing Costs
Many homeowners underestimate the true cost of refinancing. Beyond the obvious fees, several hidden charges can significantly impact your break-even calculation.
Primary costs include:
- Legal fees: Typically S$800–S$1,500 depending on the bank and property type
- Valuation fee: S$600–S$1,200 for a professional property valuation
- Early redemption penalty: 0.75%–1.5% of the outstanding loan amount if you're breaking your current loan early
- Clawback fee: If your current loan is within a lock-in period (usually 2–3 years), your bank may charge a clawback penalty—sometimes called a prepayment penalty
- Appraisal or inspection fee: Some banks charge additional fees for property inspections
For a S$500,000 loan with an early redemption fee of 1%, you're looking at S$5,000 in penalties alone. This significantly extends your break-even period and is crucial to factor into your decision.
For a comprehensive breakdown of these costs and strategies to minimize them, read our detailed guide on Hidden Costs of Refinancing: What You Really Need to Know | Homejourney " style="text-decoration: none; color: inherit;">hidden costs of refinancing.
Interest Rate Environment: Timing Your Refinancing
The decision to refinance depends heavily on the current interest rate environment. When rates are falling, refinancing becomes more attractive. When rates are stable or rising, the savings may not justify the costs.
The chart below shows recent SORA trends to help you understand how rates have moved:
Currently in 2026, Singapore's interest rates are influenced by the 3-month and 6-month SORA (Singapore Overnight Rate Average), which most banks use as their benchmark.[1] If you locked in your mortgage when SORA was higher, refinancing to a lower SORA-based package could deliver substantial savings.
To make the most informed decision, compare current refinancing rates from major Singapore banks. On Homejourney's Bank Rates " style="text-decoration: none; color: inherit;">bank rates page, you can instantly see competitive refinancing offers from DBS, OCBC, UOB, HSBC, Standard Chartered, and other major lenders in one place.
Step-by-Step Refinancing Calculation Worksheet
Use this structured approach to calculate whether refinancing is worth it for your specific situation:
Step 1: Gather Your Current Loan Details
- Outstanding loan amount
- Current interest rate
- Current monthly payment
- Years remaining on the loan
- Lock-in period status (are you still within it?)
Step 2: Determine Your New Loan Terms
- New interest rate from your chosen bank
- Loan amount (usually the same as outstanding balance)
- New loan tenure (can be same or extended)
- Calculate new monthly payment using a mortgage calculator
Homejourney's Bank Rates " style="text-decoration: none; color: inherit;">refinancing calculator automatically computes your new payment based on current bank rates, saving you time and ensuring accuracy.
Step 3: Calculate Monthly Savings
Monthly Savings = Current Monthly Payment − New Monthly Payment
Step 4: List All Refinancing Costs
- Legal fees (confirm with your chosen bank)
- Valuation fee
- Early redemption fee (if applicable)
- Clawback penalty (if within lock-in period)
- Any other bank-specific charges
Step 5: Calculate Break-Even Point
Break-Even Period (months) = Total Refinancing Costs ÷ Monthly Savings
Step 6: Make Your Decision
- If break-even is less than 2 years and you plan to stay longer: Refinancing is likely worth it
- If break-even is 2–3 years: Refinancing may be worth it depending on your circumstances
- If break-even exceeds 3 years: Refinancing is probably not worth it unless rates drop significantly
Real-World Refinancing Scenarios
Scenario 1: The Clear-Cut Case
Sarah has a S$600,000 loan at 3.8% with 18 years remaining. Her current monthly payment is S$3,580. A new refinancing package offers 2.9% with total costs of S$4,200. Her new monthly payment would be S$3,210, saving S$370 monthly. Break-even: 11.4 months. Since Sarah plans to stay in her property for at least 10 years, refinancing is a clear win.
Scenario 2: The Lock-In Dilemma
James has a S$750,000 loan at 3.2% but is only 18 months into a 3-year lock-in period. His bank charges a S$15,000 clawback penalty for early redemption. A new rate of 2.7% would save him S$312 monthly. Break-even: 48 months (4 years). Since James can't break even within his remaining lock-in period, he should wait another 18 months before refinancing.
Scenario 3: The Marginal Case
Maya has a S$400,000 loan at 3.5% with 15 years remaining. A refinancing offer at 3.2% would save S$95 monthly, with total costs of S$3,000. Break-even: 31.6 months (2.6 years). Maya is planning to sell and upgrade in 3 years, so refinancing makes sense—but just barely. She should compare rates across multiple banks to potentially negotiate better terms.
Comparing Refinancing vs. Repricing
Before you commit to refinancing, understand that Singapore banks offer an alternative: repricing. This allows you to change your interest rate package without fully redeeming your loan, often with lower costs.
Repricing typically costs S$0–S$500 compared to S$3,000–S$5,000 for full refinancing. However, repricing may limit your options to your current bank's packages. For a detailed comparison of when each option makes sense, see our guide on Refinancing vs Repricing: Which is Better for You? Homejourney " style="text-decoration: none; color: inherit;">refinancing vs. repricing.
How to Get the Best Refinancing Rates
Once you've confirmed that refinancing is worth it mathematically, maximizing your savings requires strategic rate shopping.
Compare rates across multiple banks: Don't accept your current bank's repricing offer without exploring alternatives. DBS, OCBC, UOB, HSBC, and Standard Chartered regularly offer competitive refinancing packages. On Homejourney, you can compare current rates from all major lenders instantly.
Negotiate cash rebates: Many banks offer sign-up bonuses for refinancing. As of March 2026, UOB offers up to S$2,500 cash for refinancing loans above S$450,000.[1] OCBC offers similar promotions. These rebates can offset your refinancing costs significantly.
Time your application strategically: Submit applications when you're confident rates won't drop further. If you're uncertain about rate direction, consider fixing your rate for 2–3 years to lock in current levels.
Use Homejourney's multi-bank application: Instead of visiting multiple bank branches, submit one refinancing application through Homejourney and receive competitive offers from multiple lenders simultaneously. This approach saves time and gives you genuine negotiating power—banks will compete for your business.
The Role of Loan Tenure in Your Calculation
When refinancing, you have the option to extend your loan tenure. While this lowers your monthly payment, it increases total interest paid and may reduce your refinancing savings.
Example: If you have 15 years remaining and refinance for another 20 years, your monthly payment drops further—but you're paying interest for 5 additional years. Calculate both scenarios (same tenure vs. extended tenure) to understand the true long-term cost.
For most homeowners, maintaining your original tenure maximizes refinancing benefits. Only extend your tenure if you need to reduce monthly payments for cash flow reasons.
Key Considerations Before You Refinance
- How long do you plan to stay? Your break-even period must fit within your expected timeline in the property
- Are you within a lock-in period? Clawback penalties can dramatically extend your break-even point
- What's the interest rate outlook? If rates are expected to drop further, waiting might be prudent
- Can you negotiate better terms? Banks often have flexibility on rates and fees for qualified borrowers
- Will refinancing affect your other financial goals? Consider the impact on your overall financial planning
FAQ: Refinancing Worth It Questions
Q: What's the minimum rate difference that makes refinancing worth it?
A: Generally, a rate reduction of 0.5% or more makes refinancing financially attractive, assuming reasonable refinancing costs. However, even smaller reductions (0.25%–0.5%) can be worthwhile if your break-even period is short (under 12 months).
Q: Can I refinance if I'm still within my lock-in period?
A: Yes, but you'll pay a clawback penalty. Calculate whether the savings justify this penalty. In many cases, it's better to wait until your lock-in period expires.
Q: How long does the refinancing process take?
A: Typically 2–4 weeks from application to fund disbursement. During this time, your old loan remains active, so you continue making regular payments.
Q: Should I refinance if rates are expected to rise?
A: If rates are rising, refinancing becomes more urgent. Lock in lower rates now before they climb further. However, still ensure your break-even calculation justifies the costs.
Q: What if my property value has decreased since I bought?
