Cashflow Pillar · 2026

Fixed vs floating mortgage Singapore 2026: the decision, not the rate

By Winfred Quek · 11-minute read · Updated 19 April 2026

The wrong question is "which rate is lower today?" The right question is "which structure matches my cashflow stability, my hold horizon, and my view on the rate cycle?" Most buyers I meet have been shown a comparison sheet from a mortgage broker with the headline rate circled — and no framework for thinking about the decision.

This piece is the framework. SORA mechanics, the lock-in traps, board rate games, and the specific cases where fixed wins over floating (and vice versa). If you're about to sign a loan facility letter in 2026, read this first.

1. The three main package types in Singapore

Singapore banks offer three broad mortgage structures: fixed rate, SORA-pegged floating, and board rate floating. Each has very different risk characteristics even when the headline rate looks similar.

Fixed rate: Locked rate for the fixed-period (typically 2 or 3 years), after which it converts to a floating structure. The lock insulates you from rate moves during the fixed period. Early redemption penalty (1.5% of outstanding) usually applies within the lock-in.
SORA-pegged: The loan rate = 3M or 1M compounded SORA + a bank spread (typically 0.8–1.2%). SORA moves with MAS policy and market conditions. Transparent and formula-based.
Board rate: Bank sets the rate at its discretion. Less transparent. Banks historically raise board rates faster than they drop them. Generally least attractive unless paired with a specific promotion.

2. SORA mechanics — the only floating rate worth tracking

SORA (Singapore Overnight Rate Average) is the interbank overnight lending rate. 3M compounded SORA is the most common mortgage peg — the average of daily SORA readings over the prior 3 months, compounded. This smooths volatility: even if overnight rates spike, your 3M compounded SORA changes gradually.

As of April 2026, 3M compounded SORA is trading around 2.5–2.8%. Bank spreads on SORA-pegged mortgages range from 0.8% to 1.2% depending on loan size and customer segment. Effective all-in floating rate: 3.3–4.0%.

Fixed rate packages for 2-year and 3-year fixed are pricing at 2.8–3.3% as of April 2026. The fixed-floating differential has narrowed materially from the 2023 peak, when fixed was often 1%+ cheaper than floating.

3. Lock-in and redemption penalty — the real cost

Every fixed-rate package has a lock-in period (typically 2 or 3 years matching the fixed tenure) during which early redemption triggers a penalty — usually 1.5% of the outstanding loan. On a S$1M loan, that's S$15,000.

What triggers redemption? Selling the property, refinancing to another bank, or making a large lump-sum repayment beyond the allowed prepayment window. The last one catches many clients who come into bonus/sale proceeds and want to reduce principal — only to find the penalty wipes out the interest savings.

Check the clause wording. Some packages waive the penalty on sale (you still lose on refinancing) while others apply it equally. Some have a 20% annual partial prepayment allowance; others have zero. Two banks can have identical headline rates but materially different lock-in terms. Read the facility letter, not the flyer.

4. When fixed rate wins

Fixed rate is the right answer when any of these apply:

Cashflow-constrained household

If a 1% rate rise would materially compromise your monthly budget, fixed rate is insurance. The premium (if any) is the cost of sleeping well. TDSR-tight borrowers who scraped through approval cannot absorb floating rate shock without life adjustments.

Tight TDSR at origination

Even though MAS stress-tests at 4%, a hard TDSR case may be 1 percentage point from the limit in reality. Locking in protects you from triggering stress scenarios at refinancing.

No strong view on rate direction

If you don't have a specific thesis on where rates go, fixed rate removes one variable. Most homeowners are not professional rate watchers and shouldn't pretend to be.

Short-term certainty required

If you're planning a family, career change, or sabbatical where cashflow needs to be rock-stable for 24 months, fixed matches that need.

5. When floating wins

Floating is the right answer when any of these apply:

Short hold horizon

If you're planning to sell within 12–18 months (post-SSD window), you don't want to be stuck with a 2-year or 3-year lock-in and its redemption penalty. Floating with a short lock-in (or a redemption-on-sale waiver) matches the exit timing.

Rate-cut thesis

If your view is that policy rates will fall materially over the next 12–24 months (e.g., global central bank easing cycle), floating captures the downside. You can always refinance to fixed later if your view flips.

High-income, cashflow-resilient

If a 1–2% rate rise is absorbed by household cashflow without stress, you don't need the insurance that fixed provides. Floating tends to have lower structural spread over a 10-year horizon.

Planning to refinance or restructure within 24 months

If you anticipate refinancing (say, due to an upcoming decoupling or property restructure), a fixed-rate lock-in becomes a problem. Floating with shorter or no lock-in gives you optionality.

6. The board rate trap

Board rate packages are the least transparent. The bank publishes a board rate and can adjust it at its discretion (with appropriate notice per MAS guidelines). Historically, board rates have:

Risen faster than they fall — banks protect margins when funding costs rise.
Been slower to pass on cuts when SORA drops.
Featured in "teaser rate" packages where the Year 1 rate is attractive and Year 2+ reverts to a materially higher number.

In 2026, I rarely recommend board rate packages unless the specific combination of rate, lock-in, and fee structure is clearly superior. Transparency matters over a 25-year loan tenure.

7. The 3-year decision — a worked example

Client with a S$1.5M loan, 30-year tenure, 8-year likely hold. Three packages on the table in April 2026:

Package	Year 1–3 rate	Year 4+ rate	Lock-in
Fixed 3Y	3.05%	SORA + 0.9%	3 years
SORA-pegged floating	SORA + 0.85% (~3.55%)	SORA + 0.85%	2 years
Board rate 2Y teaser	2.85% Y1, 3.55% Y2	Board rate (3.75%+)	2 years

Which wins depends on the rate path. If SORA stays flat or rises, the Fixed 3Y saves ~0.5% for 3 years = ~S$22,500 on a S$1.5M loan. If SORA falls 0.75% over 18 months, the floating wins. If you plan to sell at Year 3, Fixed 3Y lock-in ends exactly on schedule — no penalty, maximum benefit.

For a stable-income family with an 8-year hold and no strong rate view, Fixed 3Y is the usable middle path. For a high-income investor who may exit at Year 2, floating with a short lock-in is cleaner.

8. Refinancing mechanics and timing

Refinancing (switching banks) typically becomes attractive 3–6 months before lock-in ends. The process: get indicative offers from 2–3 banks, compare all-in cost (rate + fees + legal costs), apply, and close within the lock-in window to avoid the old bank's penalty.

Legal subsidy (typically S$2,000–S$3,000 for refinancing) and cash rebates are part of the all-in comparison. Some banks clawback these if you refinance within their new lock-in. Read both sides.

A realistic cadence: re-evaluate the mortgage structure every 2–3 years. Not monthly. Not never. Twice in a decade.

9. What mortgage brokers don't tell you

Package availability is loan-size-dependent. Rates advertised for S$1M+ loans aren't offered at S$500k loans. Check your specific tier.
Variable income buyers get worse packages. Self-employed, commission-based, or foreign-income buyers often see a 0.2–0.4% higher spread. Bring all income proof to get the best offer.
Co-borrower composition matters. Having a low-income spouse as co-borrower can reduce the effective rate by expanding TDSR headroom — but also complicates decoupling later.
"Promotional" rates are for new purchases only. Existing customers refinancing internally usually get worse rates than new-to-bank offers.

10. How this fits the Cashflow pillar

In the 4-Pillar Audit, the mortgage structure sits in the Cashflow pillar — it's the single largest recurring outflow for most households. The right structure isn't the one with the lowest headline rate. It's the one that matches your cashflow stability, your exit horizon, and your view on the cycle.

Run through the affordability calculator with a 1% rate shock before signing any package. If your margin is tight, fixed rate is cheap insurance. If your margin is healthy, floating gives you optionality.

The worst answer is "whichever has the lowest rate this week." That's the non-decision most buyers make by default.

Book the 4-Pillar Portfolio Audit

Two hours. We review your actual mortgage options, stress-test cashflow at plus-1% and plus-2% rate shocks, and pick the structure that matches your horizon — not the one with the best flyer.

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