The Fed Is Raising Rates. Must Singapore Mortgage Rates Follow?

20 September 2026

The Federal Reserve has raised US interest rates again. Predictably, some Singapore borrowers are hearing a familiar warning: US rates are going higher, so Singapore mortgage rates will rise too — fix your mortgage, or even take your loan now before borrowing becomes more expensive.

It sounds logical. But it is too simplistic.

The Federal Reserve certainly matters to Singapore. What does not follow is that Singapore-dollar interest rates must rise whenever the Fed raises rates. Singapore operates a very different monetary system, and today’s bond markets provide rather convincing evidence of that.

For borrowers, the distinction matters. Fixing an existing mortgage may be sensible insurance. Taking a loan earlier than necessary because someone says the Fed will make it more expensive later is a much bigger decision — and one that should be supported by arithmetic, not anxiety.

Singapore Is Different

Most major central banks conduct monetary policy primarily through interest rates. Singapore does not.

Instead, the Monetary Authority of Singapore manages the value of the Singapore dollar against the currencies of its major trading partners. This makes sense for a small, exceptionally open economy that imports much of what it consumes.

A stronger Singapore dollar makes imported oil, food, machinery and other goods cheaper in SGD terms than they otherwise would be. Suppose oil rises 10% in US dollars. If the Singapore dollar strengthens against the US dollar at the same time, Singapore does not necessarily import that entire 10% increase; the currency absorbs part of the shock.

So while the Federal Reserve principally uses interest rates to tighten monetary conditions, MAS can achieve some of the same objective through the Singapore dollar.

That is why a Fed hike does not automatically mean a corresponding rise in Singapore rates.

The Bond Market Shows It Clearly

Look at the numbers.

On 18 September 2026, Singapore government yields were approximately:

2-year SGS: 1.84%
5-year SGS: 2.14%–2.15%
10-year SGS: 2.44%–2.45%
1-year Treasury bill: 1.67%

Now compare them with America:

2-year US Treasury: 4.76%
10-year US Treasury: about 5.0%

The difference between the two-year US and Singapore government yields is almost three percentage points. If Singapore rates had to follow US rates mechanically, this enormous gap could hardly exist.

There is another reason such a gap can persist. If investors expect the Singapore dollar to remain strong or appreciate, they may accept a lower interest rate to hold Singapore dollars. That helps explain why Singapore rates can sit far below American rates without money simply rushing out of the country.

Put simply, the Singapore dollar itself is already doing some of the work.

Switzerland Shows We Are Not Alone

Singapore is often compared with Switzerland: two small, prosperous and internationally connected financial centres. Their monetary systems are different, but Switzerland provides a useful reality check.

As of 18 September, ahead of the Swiss National Bank’s next policy assessment on 24 September, the SNB policy rate remained at 0% and its ten-year government bond yielded only around 0.58%.

Compare:

US 10-year: about 5.0%
Singapore 10-year: about 2.44%–2.45%
Switzerland 10-year: about 0.58%

Three sophisticated financial centres. Three completely different interest-rate structures.

Switzerland has recently experienced some currency weakness as the gap with US interest rates widened. Singapore’s situation is different: MAS actively uses the Singapore dollar as its main monetary-policy tool, and the currency remains strong.

The lesson is not that Singapore and Switzerland are identical. It is much simpler: there is no rule saying the Fed raises rates and everybody else must follow.

Countries conduct monetary policy for their own economic circumstances.

What Actually Matters to Your Singapore Mortgage?

For many Singapore floating-rate mortgages, the important benchmark is SORA — the Singapore Overnight Rate Average.

A mortgage might, for example, be priced at:

3-month compounded SORA + 0.50%.

SORA is based on actual overnight Singapore-dollar transactions between financial institutions. It can certainly be affected by what happens in global markets — Singapore does not exist in a financial vacuum — but SORA is not Fed Funds converted into Singapore dollars.

Singapore-dollar liquidity, currency expectations, funding conditions and international capital flows all matter.

DBS Group Research made a similar observation in a 9 July 2026 note, describing SGD rates as appearing increasingly decoupled from USD rates and the spread between them as unusually wide. DBS also cautioned that shorter-term SGD rates could face some upward pressure.

That is a useful balance: Singapore rates can rise. They simply do not have to rise because the Fed has raised rates.

So Should You Fix Your Mortgage?

Perhaps.

There is nothing wrong with fixing an existing mortgage. A fixed rate gives certainty, and a homeowner may quite reasonably decide that knowing exactly what the monthly payment will be for the next two or three years is worth paying for.

But make it a financial calculation rather than a reaction to a Fed headline.

Suppose your choices are:

Fixed mortgage: 2.0%

or

Floating mortgage: 3-month compounded SORA + 0.50%.

Your break-even SORA is approximately 1.50%.

If SORA averages above 1.50% during the relevant period, the fixed package becomes more attractive, before allowing for fees and contractual differences. If SORA averages below 1.50%, the floating package is cheaper.

So instead of asking:

“Will the Fed raise rates again?”

ask the banker:

“What does SORA have to average for your fixed package to save me money?”

That is a much more useful question.

“Take the Loan Now Before Rates Rise” Is a Different Matter

Fixing the rate on debt you already need is one decision. Taking on debt earlier than necessary because somebody predicts rates will rise is another.

Suppose you need a S$1 million loan six months from now, but you are advised to draw it today because rates may be higher later.

At a hypothetical interest rate of 2%, six months of interest costs approximately S$10,000.

If you did not need the money during those six months, you have spent roughly S$10,000 before considering fees, simply to protect yourself against a possible future rate increase. Perhaps rates will rise enough to justify that decision; perhaps they won’t. But the future saving must first recover the cost of borrowing early.

One should not confuse borrowing cheaply with borrowing unnecessarily.

So when somebody says, “Take the loan now before rates rise,” ask a very simple question:

“How much will borrowing early cost me, and how far must future SGD rates rise before I recover that cost?”

If the recommendation makes sense, the numbers should demonstrate it.

A Bank’s Sales Pitch Is Not Monetary Policy

Banks are businesses. They have funding costs, shareholders, credit risks and profit requirements, and there is nothing improper about that.

But a bank’s commercial interests should not be confused with Singapore’s monetary policy. There is no economic requirement for a bank to raise an SGD lending rate simply because the Federal Reserve has raised its USD policy rate.

What matters is the bank’s SGD funding cost, credit risk, competitive conditions and the price of the particular loan.

There is also a wider economic consideration. Excessively expensive credit eventually affects households, property and business investment. Singapore benefits from a sound and profitable banking system, but it also benefits from businesses continuing to invest and households being able to finance homes at sustainable rates.

Profitability matters. So does economic growth.

Could Singapore Rates Still Rise?

Of course.

Very short-term SGD yields have already moved upwards. Secondary-market yields on four-week MAS Bills rose from 1.52% on 11 September to 1.67% a week later, while twelve-week yields moved from 1.59% to around 1.7%.

That deserves watching, but it should also be kept in perspective. Singapore’s one-year government yield remains around 1.67% and the two-year around 1.84%, while the US two-year Treasury is around 4.76%.

The sensible conclusion is therefore neither “Singapore rates cannot rise” nor “the Fed has hiked, so Singapore rates must rise.”

Both are too absolute.

Show Me the Numbers

Before fixing a mortgage, ask:

What is the fixed rate?

What is the floating SORA spread?

What is the lock-in period?

What are the early-redemption or refinancing costs?

And most importantly:

At what average SORA does fixing actually save me money?

If someone recommends taking a new loan earlier than necessary, add one more:

How much does borrowing early cost me, and how much must rates subsequently rise before I am better off?

These questions have numerical answers.

“The Fed is raising rates” does not.

The Federal Reserve matters enormously to Singapore, but influence is not obedience. MAS operates a different monetary system, the Singapore dollar itself is an important policy instrument, and SGD interest rates already sit far below their American equivalents.

So fix a mortgage when the certainty is worth its price, and take a loan when you need the capital and the economics justify the borrowing.

But neither decision should be made simply because somebody says:

“The Fed just raised rates.”