Refinancing switches your home loan to a new bank for a lower rate; repricing renegotiates with your existing bank. Both can cut your monthly repayment, but they only make financial sense after your lock-in period ends and your monthly interest savings outpace the total switching costs within your remaining loan tenure (as of 2026-06).
Singapore homeowners sitting on a home loan signed two or three years ago may now be paying significantly more than they need to. With SORA-pegged floating packages and fixed-rate offerings repriced regularly by banks, the gap between your existing rate and the best available deal can quietly widen to 0.5 percentage points or more — enough to save hundreds of dollars every month on a typical S$600,000 outstanding balance. The decision to act, however, is not simply about which rate looks attractive in a brochure. It requires a methodical comparison of switching costs, lock-in obligations, subsidy clawbacks, and the number of months it will take you to recover every dollar spent on the switch. This guide walks through the full evaluation framework, complete with a worked example and links to the calculators that do the arithmetic for you.
Refinancing vs Repricing: Understanding the Distinction
The two terms are frequently confused. Refinancing means discharging your current mortgage and taking a new one with a different bank. Legal conveyancing is required, a new valuation may be needed, and any cash rebate or legal-fee subsidy paid by your original bank may be clawed back if you are still within the clawback window (typically two to three years from the original disbursement). In exchange, you gain access to the full spectrum of competing offers and typically achieve the largest rate reduction.
Repricing means staying with the same bank but switching to a different loan package — for example, moving from a fixed-rate package that has expired onto a new fixed or floating rate. There is no conveyancing, no valuation fee, and no clawback risk. The bank charges a one-off repricing fee that is usually between S$200 and S$800. The trade-off is that your existing bank has less incentive to offer you its sharpest rate, because the switching barrier favours their position.
Both options are only cost-effective once your lock-in period has ended. Most Singapore home loans carry a lock-in of one to three years. Exiting early triggers an early-redemption penalty, commonly set at 1.5% of the outstanding loan amount. On a S$600,000 balance that is S$9,000 — a figure that erases most rate-related savings and then some.
The Rate Environment in 2026
Since the Monetary Authority of Singapore (MAS) completed the industry-wide transition from SIBOR to SORA at end-2024, all Singapore-dollar floating-rate home loans reference the Singapore Overnight Rate Average (SORA). SORA is published daily by MAS and reflects overnight interbank funding costs. Banks price floating packages as SORA plus a fixed spread, so the spread — not SORA itself — is the primary lever you negotiate when refinancing. Fixed-rate packages offer rate certainty for one to three years and are priced on each bank's own cost of funds. As of 2026-06, both fixed and floating packages are available at competitive spreads; the best deals are typically reserved for new-to-bank customers, which is why refinancing often outperforms repricing on rate alone.
Your mortgage lock-in period is ending, and your bank is offering to "renew" at 3.5%. But a competing bank offers 2.6%. Should you switch? The savings look obvious — but what about the legal fees, valuation costs, and potential lock-in penalty? This calculator tells you whether refinancing actually saves you money after all the switching costs.
Many borrowers either refinance too early (paying unnecessary penalties) or too late (leaving money on the table for years). The Refinancing Calculator shows your exact break-even month and total net savings.
What This Calculator Does
Should you refinance your mortgage? Compare your current loan against a new offer, factoring in lock-in penalties, legal fees, valuation costs, and any subsidy clawback. See your monthly savings, break-even month, and total interest saved over the remaining tenure.
You can find this calculator in the Calculators tab on ShiokNest. It updates results instantly as you adjust inputs — no waiting, no page reloads.
Why This Matters
Interest rate savings compound over years of mortgage repayment. Even a 0.5% reduction in your rate can translate to tens of thousands of dollars in total savings over a 20-year loan. This calculator matters because:
- Refinancing costs (legal fees, valuation, penalties) must be weighed against the savings
- The break-even month tells you exactly when refinancing starts paying off
- Timing is critical — refinancing during lock-in triggers penalties that can negate the benefit
What You Will Discover
After running this calculator with your personal numbers, you will know:
- Your monthly payment saving after refinancing
- The exact break-even month when savings exceed refinancing costs
- Total interest saved over the remaining loan tenure
- A cumulative payment comparison chart showing old vs new loan over time
Key Inputs Explained
Here are the inputs you will configure, along with their default values. Each default is calibrated to a realistic Singapore condo scenario so you can explore results immediately.
| Field | Description | Default Value |
|---|---|---|
| Outstanding Balance | Remaining mortgage principal on your current loan. | 800000 |
| Current Interest Rate (%) | Your existing mortgage interest rate. | 3.5 |
| Remaining Tenure (Years) | Years left on your current mortgage. | 20 |
| Lock-in Penalty (%) | Penalty as percentage of outstanding balance if still in lock-in. | 1.5 |
| New Interest Rate (%) | The refinanced loan interest rate. | 2.6 |
| New Tenure (Years) | Tenure for the refinanced loan. | 20 |
| Legal Fee | Lawyer fees for the refinancing or decoupling conveyance. | 2500 |
| Valuation Fee | Property valuation report fee for refinancing. | 500 |
Step-by-Step Guide
- 🏠 Navigate to Calculators — Click the "Calculators" tab in the ShiokNest navigation bar. All 26 calculators are grouped by purpose for easy access.
- 🔍 Select the calculator — Choose "How to Evaluate Mortgage Refinancing" from the calculator list. You will see default values already loaded so you can explore immediately.
- ✏️ Enter your values — Replace the defaults with your own numbers. The key fields are:
- Outstanding Balance — Remaining mortgage principal on your current loan.
- Current Interest Rate (%) — Your existing mortgage interest rate.
- Remaining Tenure (Years) — Years left on your current mortgage.
- Lock-in Penalty (%) — Penalty as percentage of outstanding balance if still in lock-in.
- New Interest Rate (%) — The refinanced loan interest rate.
- Plus 3 more fields for fine-tuning your scenario.
- 📊 Review the results — The calculator updates instantly as you change any input. Monthly savings, break-even month, total savings, and a cumulative payment comparison chart.
- 🔄 Run what-if scenarios — This is where the real power lies. Change one variable at a time to see its impact. For example, try increasing the interest rate by 1% or extending your holding period by 5 years. Note how the results shift.
- 💾 Compare and decide — Run 2-3 different scenarios and note the results. This gives you a range of outcomes to base your decision on, rather than relying on a single projection.
Worked Example
Meet Amanda, who has $800,000 outstanding on her mortgage at 3.5%. Her lock-in period has ended, and she received a new offer at 2.6% with 20 years remaining. Should she refinance?
The math: By switching from 3.5% to 2.6%, Amanda saves $361 per month. After accounting for legal fees ($3,000) and valuation ($500), she breaks even in just 10 months. Over the remaining 20 years, the net saving is approximately $83,230.
The verdict: With a break-even of 10 months and 20 years of savings ahead, refinancing is a clear win for Amanda. The calculator shows this analysis instantly for any rate combination.
Real-World Scenarios to Try
Here are some realistic scenarios you can plug into the calculator right now. Each one reflects a common situation Singapore property buyers face.
| Scenario | Settings to Try | What You Will Learn |
|---|---|---|
| Rate drop opportunity | $800K balance, 3.5% → 2.6%, 20 yr | Monthly savings and break-even month after accounting for all refi costs |
| Lock-in penalty check | $600K, 4.0% → 3.0%, 1.5% penalty, 12 months lock-in | Whether refinancing before lock-in expiry still saves money overall |
| Tenure extension | $500K, 3.5% → 3.0%, 15 yr → 25 yr | How extending tenure reduces monthly payments but increases total interest |
Expert Tips and Common Pitfalls
💡 Pro Tips
- Use realistic assumptions — Singapore condo appreciation has historically averaged 2-4% per year. Avoid overly optimistic projections. When in doubt, use 3% as a baseline.
- Wait until your lock-in ends — Refinancing during lock-in triggers penalties (typically 1.5% of outstanding balance). The savings rarely justify the cost.
- Check for clawback — Some banks claw back subsidies (legal fee reimbursement, cash rebates) if you refinance within 2-3 years. Factor this into your break-even calculation.
- Compare total cost, not just the rate — A 0.1% lower rate means nothing if the new package has higher legal fees, shorter lock-in, or worse post lock-in spread.
⚠️ Common Pitfalls
- Focusing only on the monthly saving — A lower monthly payment is meaningless if penalties and fees exceed the total savings over the remaining tenure.
- Forgetting the break-even timeline — If the break-even is 18 months but you plan to sell in 12 months, refinancing loses money.
🤔 What-If Scenarios to Explore
Get the most value from this calculator by testing these scenarios:
- What if you still have 12 months of lock-in? Is it worth paying the penalty to get a lower rate now?
- Compare refinancing at 2.5% vs waiting 6 months for a possible 2.2% offer.
- What if you extend tenure from 20 to 25 years during refi? How does that affect total interest?
- Run at least 3 scenarios — best case, base case, and worst case — to understand the full range of outcomes.
Related Calculators
Your property journey involves many interconnected decisions. These calculators work hand-in-hand with this one:
- How to Use the mortgage calculator
- How to Compare Mortgage Loan Packages
- How to Read the Borrowing Sensitivity Heatmap
Ready to Crunch Your Numbers?
Enter your current loan details and the new offer to see your monthly saving, break-even point, and total interest saved. The answer is usually clear within seconds.
Official Sources
This how-to guide is auto-generated using ShiokNest's calculator defaults. All worked examples use default values — adjust inputs to match your personal scenario for accurate results.
The Break-Even Calculation: When Refinancing Actually Pays
The core question is simple: how many months of interest savings does it take to recover the total cost of switching? If that break-even point falls before you plan to sell or fully repay the loan, refinancing makes financial sense.
Switching costs to account for include: legal and conveyancing fees (typically S$2,000–S$3,000, but new banks often offer a legal subsidy of S$1,500–S$2,000 that reduces your net outlay); a property valuation fee (S$200–S$500 for private residential, sometimes waived); any clawback of cash rebate or legal subsidy paid by your original bank if you are still within the clawback window; and miscellaneous administrative charges. In practice, a well-negotiated refinancing package can bring your total net out-of-pocket cost down to S$500–S$1,500, but you must always verify the clawback clause in your original Letter of Offer.
Worked example (as of 2026-06): Suppose your outstanding balance is S$600,000 with 20 years remaining. Your current rate is 3.50% per annum; the best competing offer is 2.90% per annum. Monthly interest saving: (3.50% – 2.90%) ÷ 12 × S$600,000 = 0.60% ÷ 12 × S$600,000 = S$300 per month. Total net switching cost after legal subsidy and valuation: S$2,500. Break-even: S$2,500 ÷ S$300 = 8.3 months. If you will hold the property for at least another year, refinancing recovers its cost well within that horizon. Run the same arithmetic with your own numbers using the ShiokNest Refinancing Calculator and cross-check your total monthly repayment before and after with the Mortgage Calculator.
For more complex comparisons — where you are weighing two or more competing packages with different rate structures or lock-in periods — the Loan Comparison Calculator models total interest paid over the full tenure for each option side by side.
CPF and cash repayment implications also matter. If your monthly repayment is currently covered partly by CPF Ordinary Account (OA) savings, switching to a lower rate frees up OA funds that can compound at 2.5% p.a. instead of being consumed by interest. The accrued interest concept — where CPF monies used for housing must be returned to your CPF OA with interest upon sale — means any reduction in principal consumed over the loan life directly improves your eventual net sale proceeds. For HDB flat owners, the HDB financing guidelines set out the documentation required when switching from an HDB concessionary loan to a bank loan or between bank loans.
Repricing, while administratively simpler, deserves a genuine rate check before you accept the bank's counter-offer. Banks typically present one or two in-house packages; calling their retention team and referencing a competing quote often yields a sharper rate without requiring you to move the loan. If the resulting difference still favours an outside bank after accounting for the clawback and conveyancing costs, refinancing wins on pure economics.
Step by Step: Evaluating Whether to Refinance
- Confirm your lock-in expiry date. Check your Letter of Offer for the lock-in period end date and the early-redemption penalty clause (usually 1.5% of outstanding balance). Do not proceed further until your lock-in has expired or is within 30 days of expiring — most banks accept refinancing applications up to three months before lock-in ends so the new loan can disburse immediately after.
- Check for clawback obligations. Review your original Letter of Offer for any cash rebate or legal subsidy clawback clause. If the clawback window has not expired, add the clawback amount to your total switching cost before computing the break-even.
- Obtain your outstanding balance and remaining tenure. Log into your bank's internet banking or call the mortgage servicing line to get your exact outstanding balance and the number of months remaining. Use these figures — not the original loan amount — in all calculations.
- Identify your current effective interest rate. If you are on a floating package, your rate changes monthly with SORA. Check your latest monthly statement for the rate applied in the most recent billing cycle, or call your bank for the current all-in rate.
- Gather competing quotes. Request written Indicative Term Sheets from at least two other banks. Focus on the all-in rate (SORA spread or fixed rate), the lock-in period, and what legal subsidy or cash rebate the bank offers. Mortgage brokers can pull multiple quotes simultaneously and at no cost to you.
- Calculate the monthly interest saving. Subtract the new rate from your current rate (in percentage points), divide by 12, and multiply by your outstanding balance. This is your monthly gross saving.
- Calculate total net switching cost. Add: conveyancing/legal fees minus any legal subsidy offered by the new bank, plus valuation fee (if required), plus any clawback amount from step 2, minus any cash rebate offered by the new bank.
- Compute the break-even in months. Divide total net switching cost by monthly gross saving. This is how many months it takes to recover the cost of switching. Use the Refinancing Calculator to automate this step.
- Compare to your holding horizon. If you plan to sell or fully repay the loan before the break-even point, refinancing is not cost-effective. If you will hold well past the break-even, proceed with the application.
- Contact your existing bank for a repricing counter-offer. Even if you plan to refinance, ask your bank's retention team for their best counter-offer. If they match or exceed the competing rate without clawback risk, repricing eliminates the conveyancing effort entirely.
- Engage a conveyancing lawyer early. Most banks have a panel of approved law firms. Confirm the lawyer is on the panel of both the discharging and incoming bank before signing any instruction letter.
- Time the disbursement carefully. Aim for the new loan to disburse on or immediately after the lock-in expiry date to avoid any overlap of penalty period and new commitment.
Frequently asked questions
How much can I realistically save by refinancing in Singapore in 2026?
Savings depend on the size of your outstanding balance and the rate differential you can achieve. A 0.5 percentage point reduction on a S$500,000 outstanding balance saves approximately S$208 per month in interest, or around S$2,500 per year. On a S$800,000 balance the same differential saves roughly S$333 per month. After accounting for net switching costs of S$1,000–S$2,500, most homeowners who secure a meaningful rate reduction will recover their costs within 6 to 12 months and save meaningfully over a two to three year lock-in horizon (as of 2026-06).
What is SORA and how does it affect my floating-rate mortgage?
SORA is the Singapore Overnight Rate Average, published daily by the Monetary Authority of Singapore (MAS). It replaced SIBOR as the primary benchmark for Singapore-dollar floating-rate home loans after the industry-wide transition completed at end-2024. Your floating-rate package is priced as 1-month or 3-month compounded SORA plus a bank spread. The spread is fixed for the duration of the package; only the SORA component fluctuates. When SORA rises, so does your effective rate — and when it falls, your repayment decreases automatically on the next reset date.
Can HDB flat owners refinance to a bank loan, and what are the key restrictions?
Yes. HDB flat owners who currently hold an HDB concessionary loan (at 2.6% p.a. as of 2026-06) can refinance to a bank loan, but the switch is permanent — you cannot return to an HDB loan once you move to a bank. Key restrictions include: the flat must not be within the Minimum Occupation Period, you must retain at least S$20,000 in your CPF OA after the bank loan is drawn (or use cash for the shortfall), and you will need a fresh property valuation. Full guidance is available on the HDB financing page. Model the long-term cost difference with the Mortgage Calculator before committing.
What is the difference between a lock-in period and a clawback period, and which one matters more?
A lock-in period is the window during which your bank imposes an early-redemption penalty — typically 1.5% of the outstanding balance — if you repay or refinance the loan. You must wait for this to expire before refinancing without penalty. A clawback period is separate: it is the time window during which your original bank can demand repayment of the cash rebate or legal subsidy it gave you when you first took the loan. Clawback periods are commonly two to three years. Both can apply simultaneously. When computing your switching cost, add any clawback amount to your out-of-pocket costs. In practice the clawback is often the larger financial item, because banks have been offering S$1,500–S$3,000 in subsidies as acquisition incentives.
Is it better to use a mortgage broker or approach banks directly when refinancing?
Mortgage brokers in Singapore typically charge no fee to the borrower — they are compensated by the bank whose product they place. The practical advantage is breadth: a good broker will pull Indicative Term Sheets from eight to twelve banks simultaneously, saving you the time of individual applications and giving you a defensible comparison basis when negotiating. Banks approached directly may offer slightly different packages for self-directed customers, so it is worth requesting a quote from your top one or two preferred banks independently. The key document to compare across all options is the Indicative Term Sheet, which states the all-in rate, lock-in period, legal subsidy, cash rebate, and clawback terms in a standardised format. Use the Loan Comparison Calculator to model the total interest cost of each shortlisted offer before making a final decision.