Refinance your investment property when your lock-in period ends and the new rate spread saves more than the S$2,000–3,500 all-in switch cost — typically a 0.30–0.50% gap justifies the move in 12–18 months. Give yourself a 3–4 month lead time, run the refinancing calculator on your actual loan balance, and remember that for an investment property the interest you pay is tax-deductible, so the after-tax saving is smaller than the headline rate gap suggests (as of 2026-06).
Your mortgage statement arrives and the rate has just jumped from the teaser 3.20% you locked in two years ago to the bank's prevailing board rate of 4.50%. On a S$1 million outstanding loan, that single-line change costs you an extra S$13,000 per year in interest. For an investment property — one that already carries ABSD, whose rental income is taxed, and whose every dollar of over-payment erodes the yield you modelled at purchase — the timing of a refinance is not a technicality. It is a financial lever. This guide explains exactly when to pull it, what it costs, and how to do the break-even arithmetic correctly for a Singapore landlord (as of 2026-06).
Refinancing versus repricing: understanding the difference
Refinancing means discharging your existing mortgage and taking a new loan with a different bank. It triggers fresh legal documentation, a new valuation, and typically costs S$1,800–S$2,500 in legal fees plus S$300–S$600 for a bank-panel valuation. If your current bank provided a legal-fee subsidy when you first drew down the loan, refinancing within the subsidy's clawback window — usually the same 2–3 year lock-in period — will also require you to return that subsidy, adding another S$1,500–S$2,000 to your costs.
Repricing means staying with the same bank and switching to a new package. The process is faster (2–4 weeks versus 2–4 months), costs S$0–S$800 in an administrative conversion fee, and requires no new legal work. The trade-off is that you are limited to whatever packages your current bank is willing to offer you, which may be less competitive than the open market.
For investment property owners, repricing is the pragmatic first stop: contact your relationship manager or mortgage team roughly four months before your lock-in expires, get the bank's best retention offer, and then benchmark it against at least two competitor quotes. Only if the gap favours a competitor — net of all switch costs — does a full refinance make sense.
The SORA rate environment in 2026
Singapore's mortgage market transitioned from SIBOR and SOR to the Singapore Overnight Rate Average (SORA) as the benchmark for floating-rate home loans. Compounded 3-month SORA, which peaked above 3.70% in 2023, had declined to approximately 2.50–2.80% by mid-2026 as the US Federal Reserve eased policy and regional interbank rates followed. Banks price investment-property loans at a spread of 0.60–1.00% over 3-month compounded SORA, giving indicative rates of 3.10–3.80% on fresh packages (as of 2026-06). Borrowers still on legacy fixed or board-rate packages from 2021–2023 lock-ins may be sitting on headline rates of 4.00–4.80%, making 2026 a meaningful window to re-shop.
Why investment properties have a different refinancing calculus
An owner-occupier who saves S$500 per month on interest keeps the full S$500. A landlord saves the same nominal amount but must account for two adjustments. First, mortgage interest on an investment property is deductible against rental income under IRAS rules, meaning the current higher interest bill is already reducing your tax liability. Reducing the interest through refinancing simultaneously reduces your deductible expense, so the net after-tax saving is the gross interest saving multiplied by (1 − your marginal income tax rate). At a 17% marginal rate, a S$10,000 annual interest saving yields only S$8,300 after-tax benefit. Second, a larger loan balance on an investment property — particularly if the asset was purchased with a 25% down-payment after ABSD — amplifies both the savings and the switching costs, so the break-even period is highly sensitive to loan size.
Refinance your Singapore investment property when (1) your current rate exceeds the market by 75+ basis points, (2) lock-in period expires (typically year 2 of original loan), or (3) you want to switch from fixed to floating (or vice versa) based on rate outlook. 2026's multi-year-low rates make this an excellent refinance window for any borrower above 2.5%.
When refinancing makes sense
| Trigger | Action |
|---|---|
| Current rate above market by 75+ bps | Refinance immediately if lock-in is over |
| Lock-in expires within 6 months | Start comparing rates now |
| Rate fixed locking expires soon | Refinance to lower fixed or floating |
| Want to switch fixed ↔ floating | Strategic re-positioning |
| Cash-out for new purchase | Refinance with higher loan amount (subject to LTV/TDSR) |
Refinance cost-benefit math
| Item | Amount |
|---|---|
| Outstanding loan | S$800,000 |
| Current rate | 2.8% |
| New rate | 1.3% (fixed 2-yr) |
| Annual interest saved | S$12,000 |
| Refinance legal + valuation fees | S$3,000 |
| Net 1-year benefit | +S$9,000 |
| Net 5-year benefit | +S$57,000 |
The refinance pays back in approximately 3 months on this scenario — clearly worth it.
TDSR exemption for refinancing
Owner-occupied refinancing without an increase in loan amount is generally exempt from TDSR — even if your current income has reduced since the original loan. This is a key benefit for older borrowers refinancing existing loans. Source: MAS.
Investment property refinancing typically requires fresh TDSR assessment unless owner-occupied criteria are met.
FAQ
Can I refinance during lock-in period?
Yes, but you'll pay the prepayment penalty (typically 1.5% of outstanding loan). The benefit must exceed the penalty.
How long does refinancing take?
4-6 weeks from application to disbursement. Plan ahead.
Do all banks offer refinance to investment property?
Most banks accept investment property refinance. Some charge a slight rate premium vs owner-occupier (e.g. 5-10 bps).
Worked example: the S$1 million investment-property loan
Consider a landlord who took a S$1 million mortgage in June 2024 at a fixed 3.30% for a 2-year lock-in, now expiring in June 2026. The loan's outstanding balance is approximately S$960,000 after two years of repayment. The bank's post-lock-in board rate is 4.55%. A competing bank is offering a fresh 2-year fixed at 3.20% with S$0 legal-fee clawback (the prior bank's subsidy window has expired).
Monthly interest at board rate (4.55%): ~S$3,640
Monthly interest at new fixed rate (3.20%): ~S$2,560
Monthly saving: ~S$1,080
Annual saving (gross): ~S$12,960
Switch costs: legal fees S$2,200 + valuation S$450 = S$2,650.
Simple break-even: S$2,650 ÷ S$1,080 = 2.5 months — well within the 2-year lock-in period. Even at a conservative 17% marginal income-tax rate (which erodes the deductibility benefit), the after-tax saving is ~S$10,757 per year, giving an after-tax break-even of under 3 months.
Over the full 2-year lock-in of the new package, the net benefit is approximately S$18,864 after switching costs and tax adjustment — a material improvement to the property's annual cash-flow profile. Use the refinancing calculator to input your own balance, rates, and marginal tax rate for a precise figure, and pair it with the mortgage calculator to see how total interest-payable shifts across the remaining loan tenure.
Cash-out refinancing: accessing equity for the next purchase
Investment-property owners who have built up equity — either through capital appreciation or principal repayment — can pursue a cash-out refinancing or equity term loan to fund a deposit on a second investment property. Under MAS Total Debt Servicing Ratio (TDSR) rules, the combined monthly debt obligations (including the new, higher loan on the refinanced property) must not exceed 55% of your gross monthly income. Note that for investment properties (as distinct from owner-occupied), a TDSR exemption is not available — the full 55% TDSR applies and rental income is only partially credited under MAS guidelines. The Loan-to-Value (LTV) ceiling for a second or subsequent residential property loan is 45% of the property's valuation, which caps how much equity you can extract. Run the numbers through the cash-flow calculator before committing to ensure the leveraged second property generates positive carry after debt service.
When refinancing does not make sense
Refinancing is not always the right move. Four situations where you should pause: (1) You are within the clawback window of your current bank's legal-fee subsidy and the gross saving does not cover the returned subsidy plus fresh legal costs. (2) Your outstanding loan is below S$300,000 — at this balance, even a 0.50% rate saving generates modest absolute interest savings that may not clear the fixed switch costs within the lock-in period. (3) You are planning to sell the property within 24 months — taking on a new 2-year lock-in simply transfers the rate risk to the buyer or forces an early redemption fee. (4) CPF funds are pledged as security and the property's valuation has fallen — the new LTV calculation may require a cash top-up that changes the economics entirely.
Step by step
- Mark your lock-in expiry date. Retrieve your Letter of Offer (or ask your bank). Note both the lock-in end date and the date to which any legal-fee clawback applies — these may differ.
- Start shopping 4 months before expiry. Mortgage packages typically take 2–3 months to process from application to drawdown. Beginning at month 4 gives you one month of buffer and prevents a gap where you roll onto the board rate.
- Collect at least three quotes. Approach your current bank (repricing offer), one major local bank (DBS, OCBC, or UOB), and one foreign bank or digital platform. Ensure all quotes are for the same product type (fixed vs. SORA-pegged) and the same lock-in duration so the comparison is apples-to-apples.
- Calculate your total switch cost. Add: legal fees (S$1,800–S$2,500), valuation fee (S$300–S$600), clawback of any prior legal subsidy still within its window (check your original Letter of Offer), and any early redemption penalty if you are still inside a lock-in (typically 1.0–1.5% of outstanding loan).
- Run the after-tax break-even. Gross annual interest saving = outstanding balance × (old rate − new rate). After-tax saving = gross saving × (1 − marginal income-tax rate). Break-even months = total switch cost ÷ (after-tax saving ÷ 12). You want break-even to occur within the first 30–40% of the new lock-in period to give meaningful benefit time.
- Check TDSR headroom. If you are considering cash-out, verify your combined debt obligations against the MAS 55% TDSR ceiling using your current income documentation. Investment-property refinances are subject to full TDSR.
- Apply and lock the rate. Once you select a package, submit your application with current payslips, CPF statements, tax assessments (especially useful for establishing rental income), and a copy of the existing title deed. The new bank will order a valuation — plan for S$300–S$600 and 1–2 weeks for this step.
- Coordinate the discharge and drawdown. Your new bank's solicitors will handle the redemption of the prior mortgage in parallel with registration of the new charge. Ensure no rental tenancy deposits are held in the property account that could complicate the title discharge.
- Inform IRAS of the change. Your deductible interest expense will shift for the year of refinancing. Keep copies of both the redemption statement and the new loan schedule — these are the supporting documents for your IRAS rental income tax filing.
- Re-model your rental yield. After the refinance, recalculate your net yield with the updated monthly interest figure. Compare the result against the district benchmark using the ROI calculator to confirm the property remains a positive-carry asset within your portfolio targets.
Frequently asked questions
Can I refinance an investment property if I already have two outstanding mortgages?
Yes, but the full MAS 55% TDSR applies to all outstanding loan obligations combined. The LTV ceiling on a third or subsequent residential property loan drops to 35% under MAS rules (as of 2026-06), which may limit how much you can borrow on a refinance. Your new bank will assess all declared debt — mortgages, car loans, personal credit lines — against your gross monthly income, including documented rental income (credited at a haircut).
Is mortgage interest fully deductible against rental income for an investment property in Singapore?
Under IRAS rules, mortgage interest is deductible only to the extent the property is rented out and generating income. If the property is vacant for part of the year, the deductible interest is prorated. Interest on the portion of the loan used for non-income-producing purposes — for example, if you extracted cash at drawdown for personal use — is not deductible. Capital repayment (the principal component) is never deductible; only the interest portion qualifies.
What is the typical break-even period that justifies a refinance?
Most mortgage advisers apply a rule of thumb of 12–18 months on a post-tax basis. If your after-tax savings recoup the total switching costs within that window, you have meaningful benefit for the remainder of a standard 2–3 year lock-in. On a S$800,000+ loan, even a 0.25% rate gap can produce a break-even of under 12 months. On smaller balances below S$400,000, you typically need a 0.40–0.50% or larger gap to justify the fixed legal and valuation costs.
What is the difference between a fixed rate and a SORA-linked rate, and which suits an investment property better?
A fixed-rate mortgage locks your interest cost for the lock-in period (typically 2–3 years) regardless of how SORA moves — useful for cash-flow predictability in a rental portfolio. A SORA-linked rate moves with compounded 3-month SORA plus a fixed spread; it can deliver savings when SORA falls but introduces variability into your monthly obligations. For investment properties where the loan cost directly affects declared taxable profit, many landlords prefer fixed rates to budget reliably. In a declining rate environment like mid-2026, a shorter fixed tenure (2 years) balanced against a SORA package is a common approach — run scenarios on the mortgage calculator to compare total interest under both structures over your intended holding period.
Are there restrictions on refinancing a property that is rented out under HDB's subletting rules?
For a private investment property (condo or landed), there are no HDB-specific subletting rules — standard MAS LTV and TDSR regulations apply. If you own an HDB flat that you are subletting under HDB's approval (a separate scenario), refinancing the HDB concessionary loan to a bank loan is permitted but the reverse — returning from a bank loan to an HDB loan — is not generally available. The information in this guide applies to private residential investment property; HDB refinancing rules are distinct and should be confirmed directly with CPF Board and HDB if applicable.