The honest answer depends entirely on which type of package you hold, and most homeowners have already been protected from a rate rise more than they realise, because of how their loan was approved in the first place.
Fixed vs floating, what actually moves
A fixed rate package locks your rate for a set period, typically 2 to 3 years, and your instalment does not change at all during that period regardless of what happens to market rates. A SORA linked floating rate package moves with the published Singapore Overnight Rate Average, so your instalment adjusts each time SORA resets, immediately reflecting a rate rise.
The 4% stress test buffer
Regardless of the actual rate you were offered, typically around 1.5% per annum for a fixed package in 2026, banks size your maximum loan quantum using a 4% per annum stress test rate under MAS's TDSR framework. This means most approved borrowers already have meaningful headroom built into their approval before a real rate rise would push their actual instalment anywhere near that stress tested figure.
Refinancing or repricing when a fixed term ends
When your fixed period expires, your rate typically reverts to a floating reference rate unless you act. At that point you can reprice with your existing bank, generally faster and cheaper in fees, or refinance to a new bank, usually offering a more competitive rate through open market competition. For loans above roughly $500,000, the rate improvement from refinancing often justifies the extra paperwork.
What to do if a rise strains your budget
If a rate rise genuinely strains your monthly cash flow, options include repricing or refinancing to a better package before your current lock in ends, extending your loan tenure to lower the monthly instalment (within MAS's maximum tenure rules), or in a genuine hardship situation, speaking to your bank directly about restructuring before falling into arrears.
Frequently asked questions
If SORA rises, does my fixed rate mortgage change immediately?
No. A fixed rate package is locked for its agreed period, typically 2 to 3 years, and does not move with SORA at all during that time. Only floating rate packages linked to SORA adjust as the reference rate resets.
Why does my bank's stress test rate not match my actual rate?
Banks are required under MAS's TDSR framework to assess your maximum loan quantum using a 4% per annum stress test rate, or the actual rate if higher, precisely so approved borrowers retain headroom if rates do eventually rise above the low rates typical in 2026.
Should I switch from floating to fixed if I'm worried about rates rising?
It depends on your risk tolerance and how long you plan to hold the loan. A fixed package gives certainty but usually carries a lock in penalty, typically 1.5% of the outstanding loan, if you break it early, so the decision should weigh your expected holding period against that penalty.
Worried about a rate rise on your mortgage?
Winfred checks your current package against today's market and models your real headroom, so you know before a rise, not after.
Book a free 30 minute callWinfred Quek is an Associate Marketing Consultant at Crestbrick Pte Ltd (CEA Licence No. L31010886H). CEA R073319H. This page is for general information only and does not constitute financial, investment, or legal advice. Rates and rules reflect the position as at 5 Aug 2026; verify current figures with IRAS, HDB, or MAS before making any decision.