To calculate if refinancing is worth it in Singapore, you need to compare total savings from a lower interest rate against all costs of switching banks, then work out how long it takes to break even. If your expected savings over your planned holding period are higher than your total costs – and you are comfortable with the new rate structure and lock-in – refinancing is likely worthwhile.
On Homejourney, you can make this decision safely by comparing refinancing packages across DBS, OCBC, UOB, HSBC, Standard Chartered and more on one platform, then using our refinancing calculator to estimate savings before you commit. This cluster article sits under our main mortgage pillar guide on Homejourney, and focuses specifically on How to Calculate If Refinancing is Worth It for Singapore homeowners and investors in the current rate environment and the refinancing timing 2026 context.
Refinancing vs Repricing: Know Your Options First
Before you even do the maths, you must be clear whether you are looking at refinancing or repricing, because the costs and calculations differ.
Refinancing means moving your home loan from your current bank to a different bank. You usually do this to secure a lower rate or a more suitable package, but you will incur legal and valuation fees – often around S$1,600–S$1,800 for HDB and S$1,800–S$2,200 for private property, although these are frequently subsidised by the new bank for larger loans.[3][1]
Repricing means staying with the same bank and switching to a new package internally. Banks typically charge an administrative or conversion fee, often around S$800, and there is usually no need for fresh legal or valuation work.[1]
In practice, homeowners in places like Punggol, Sengkang and Yishun often start by calling their existing bank to ask for a repricing quote, then compare it against refinancing offers they see through Homejourney’s bank rates comparison at Bank Rates . If the repricing rate is close enough to external offers once you factor in legal subsidies and fees, repricing can be the simpler, lower-risk move.
Refinancing Fundamentals: When Each Option Makes Sense
As a rule of thumb, consider:
- Repricing if your remaining loan is small (for example < S$250,000), your bank’s new rate is competitive, and you want minimum paperwork.
- Refinancing if your outstanding loan is larger (S$400,000–S$500,000 and above), another bank is offering a significantly lower rate or better structure, and legal subsidies cover most costs.[3][1]
- Check your lock-in period: exiting during lock-in can trigger early redemption penalties of around 1.5% of your outstanding loan, which often makes refinancing not worthwhile unless the rate differential is huge.[1]
In many 4-room HDB flats in towns like Tampines or Jurong West, owners who took SORA-pegged or fixed packages in 2021–2022 are now seeing higher “reversion” rates after the initial period. This is usually when it’s time to relook both repricing and refinancing options – ideally about six months before your lock-in ends.
How to Calculate If Refinancing Is Worth It: The Core Formula
The basic calculation for whether to refinance is:
Net Benefit = Total Interest Saved – Total Refinancing Costs
If Net Benefit is positive over your planned holding period, refinancing is financially attractive. To refine this further, you compute the break-even period:
Break-even Months = Total Refinancing Costs ÷ Monthly Savings
If you plan to keep the property and the loan longer than the break-even period – and you are comfortable with the new package’s risks (such as floating rate volatility) – refinancing is likely worth it.
Step 1: Find Your Current and New Monthly Installments
To do the calculation properly, you need:
- Your latest loan statement: outstanding balance, remaining tenure, current interest rate, and monthly instalment.
- A quote from another bank (or from Homejourney’s comparison) showing the proposed rate and estimated monthly instalment for the same remaining tenure at Bank Rates .
For example, an owner of a 3-room HDB in Queenstown with an outstanding bank loan of S$450,000 at 2.9% interest over 23 years might be paying around S$2,350 per month. A new bank package at 2.3% over the same tenure might reduce monthly instalments by around S$150–S$170, depending on the amortisation schedule.
On Homejourney, you can plug these numbers into our refinancing calculator at Bank Rates (scroll to the calculator section) to get precise monthly payment estimates for each bank, including DBS, OCBC, UOB, HSBC, Standard Chartered, Maybank, CIMB and others.
Step 2: Identify All Refinancing Costs
Refinancing is never free, even if banks advertise legal subsidies. You must list every cost, including hidden ones:
- Legal fees: Rough guide is around S$1,600 for HDB and S$1,800 for condos, depending on loan size and property type.[3]
- Valuation fees: Often about S$200 for HDB and S$350–S$550 for condos and higher for landed, though this can vary.[3]
- Bank admin or processing fees: Some banks charge application or handling fees; others waive them for promotional periods.
- Lock-in penalty (if still in lock-in): Often about 1.5% of outstanding loan – e.g. 1.5% of S$400,000 is S$6,000.[1]
- Clawback of subsidies: If your existing bank gave legal subsidies or cash rebates, you may need to refund them if you exit within the clawback period (commonly 3 years).[3][1]
Many new bank packages offer legal subsidies or cash rebates that offset part or all of your legal and valuation fees, especially for loans of around S$500,000 and above.[3] This is why owners of larger condos in areas like Bishan, Clementi or Pasir Ris often find refinancing more attractive than owners of small, almost-paid-off HDB flats.
For a deeper dive into such hidden costs in the best time refinance 2026 context, see our related piece: Hidden Refinancing Costs in 2026: Market Timing Guide | Homejourney .
Step 3: Work Out Monthly Savings and Break-even
Assume the following realistic scenario in 2026:
- Outstanding loan: S$500,000
- Remaining tenure: 20 years
- Current rate: 3.1% p.a.
- New rate: 2.5% p.a. (3M SORA + spread)
- New bank offers legal subsidy: S$2,000
- Total legal + valuation fees: S$2,200
Net cost after subsidy is around S$200 (S$2,200 – S$2,000). Using a mortgage calculator (or Homejourney’s calculator at ), the monthly instalment might drop from about S$2,800 to S$2,650 – savings of roughly S$150 per month.
The break-even period is then:
Break-even Months = S$200 ÷ S$150 ≈ 1.3 months
In this scenario, refinancing is almost a no-brainer if you plan to hold the property for more than a couple of months and if you are comfortable with the floating rate risk. Even if your actual legal costs are slightly higher, you are likely to break even within the first year.
For smaller loans, say outstanding S$200,000 with only eight years left, monthly savings from a 0.6% rate drop might only be S$60–S$80. If your net costs are S$1,000, your break-even could be more than 12–16 months. If you expect to sell your Bishan 4-room HDB to upgrade to a BTO in Tengah within a year, refinancing might then not be worth it.
Rate Environment & Refinancing Timing 2026: Refinance Now or Wait?
In 2026, most mortgages in Singapore are pegged to SORA (Singapore Overnight Rate Average), supervised and published by the Monetary Authority of Singapore (MAS). SORA reflects the volume-weighted average rate of overnight unsecured interbank SGD transactions.[5] Banks like DBS, OCBC, UOB, HSBC, Standard Chartered and others typically offer 1‑month or 3‑month SORA packages plus a fixed spread.
The decision on the best time to refinance in 2026 involves both your own loan timeline (lock-in, clawbacks) and the broader rate outlook. Homejourney’s 2026 market outlook articles, such as Best Time to Refinance in 2026: Singapore Market Timing Guide | Homejourney , help frame this discussion for everyday borrowers.
The chart below shows recent interest rate trends in Singapore:
Using Homejourney’s real-time SORA tracking on Bank Rates , you can monitor 3M and 6M SORA to decide whether to refinance now or wait. In practice, most homeowners start reviewing their loan about six to nine months before their lock-in ends, to allow time to secure approval, serve notice to the existing bank (typically three months) and complete legal documentation without being forced onto high reversion rates.
If you are already out of lock-in and paying a high legacy rate (for example >3.2% when market packages are around mid‑2% range), it is usually better to act sooner rather than attempting to “time the bottom”. Delaying three to six months just to see if SORA dips slightly can easily cost more in extra interest than you might save from a slightly lower future rate.
Step-by-Step: Safe Refinancing Process in Singapore
From experience working with homeowners in Bedok, Toa Payoh and Woodlands, a typical safe refinancing timeline looks like this:
- Review your current loan
Check your lock-in expiry, clawback period, outstanding balance, remaining tenure and current rate from your latest bank letter. - Estimate your eligibility
Use Homejourney’s eligibility and affordability calculator at to ensure your Total Debt Servicing Ratio (TDSR) and Mortgage Servicing Ratio (MSR, for HDB/EC) are within MAS limits. - Compare rates across banks
On Homejourney’s bank rates page Bank Rates , compare refinancing offers from DBS, OCBC, UOB, HSBC, Standard Chartered, Maybank, CIMB, RHB, Public Bank, Hong Leong Bank and Citibank in one view. - Choose between fixed and floating
Decide if you prefer the certainty of a fixed rate (often slightly higher but stable) or the potential savings and risks of a SORA-pegged package. Consider your risk tolerance and income stability. - Check all fees and subsidies
Ask each shortlisted bank to clearly state legal subsidies, valuation charges, admin fees, and any lock-in or clawback terms in writing. - Submit application via Homejourney
Use Homejourney’s multi-bank application at Bank Rates to submit one refinancing application to multiple banks at once. With Singpass/MyInfo integration, your income and CPF details can be verified instantly for faster processing. - Receive and compare offers
Let banks compete for your business. Compare effective interest rates (EIR), lock-in periods, and total cost after subsidies. Homejourney’s mortgage brokers can provide personalised guidance at no additional cost. - Accept letter of offer and complete legal work
Once you choose a package, sign the letter of offer and appoint the law firm (often on the bank’s panel). The law firm coordinates redemption from your existing bank and disbursement from the new bank. - Monitor your new loan
After refinancing, keep an eye on SORA and your rate revision letters. A safe practice many locals follow is to diarise a reminder 2.5 years after each refinance to start reviewing options again before the next lock-in ends.
Money-Saving Strategies When You Refinance
Beyond the simple calculation, there are several tactics locals use to maximise value when refinancing:
- Negotiate using competing offers
If you receive a better rate from Bank A, show it (or ask your broker to show it) to Bank B. In practice, it is common for banks like DBS, UOB or OCBC to improve spreads slightly when they know another major bank has made a strong offer. - Time your notice period carefully
Most banks require three months’ notice for redemption. If you mis-time your application, you may pay your old higher rate for unnecessary extra months. Homejourney’s brokers often start the process about four months before your desired switch date. - Consider cash rebates vs lower rate
Some banks offer cash rebates (e.g. S$1,500–S$2,000) instead of the absolute lowest rate. For large loans, a slightly lower rate may be worth more than a higher cash rebate; for smaller loans, the opposite may hold true. Use the Homejourney calculator to model both scenarios. - Align refinancing with other financial goals
If you plan to rent out your condo in Kallang or upgrade from your HDB in Sengkang to a private project (check data at Projects or Projects Directory ), choose a loan with a shorter lock-in or more flexible prepayment terms to keep your options open. - Use savings wisely
Some homeowners channel the monthly savings from refinancing to top up CPF or build an emergency fund, rather than just increasing day-to-day spending. This enhances long-term financial resilience.
Hidden Risks and When to Seek Professional Advice
While refinancing can be powerful, there are situations where it may not be suitable:
- If you are within the early years of a long lock-in and the penalty is huge compared to potential savings.
- If your income has become unstable (e.g. self-employed with fluctuating income), and you may struggle to meet stricter TDSR assessments at a new bank.
- If you plan to sell or fully redeem your loan within one to two years, and the break-even period is long.
- If you are switching from a stable HDB concessionary rate loan (2.6% p.a.) to an aggressive floating package purely to “chase” a slightly lower rate without understanding future rate risks.[7]
In such cases, it is safer to discuss with a licensed adviser or Homejourney’s mortgage specialists. Always remember that refinancing decisions should fit into your broader financial plan, not just the lowest headline rate.
Disclaimer: The examples and figures above are for illustration only and do not constitute financial advice. Interest rates, bank policies, MAS regulations and subsidies change over time. Always verify current terms directly with banks or through Homejourney’s live comparison tools at Bank Rates , and consider seeking independent financial advice for your specific situation.
