Sebastian shared with me
- credit score — has thresholds like 720, 740, 760, 800. Each threshold you cross on the way down, your rate will get a “hit” like additional 25 bps
- LTV ratio — has thresholds like 70%, 80%. If you (unfortunately) exceed a threshold, your rate will get a hit like 20 bps. This hit is permanent, even if you later manage to reduce your LTV.
- jumble loan — if quantum is below 425k or something like that, you get a hit. I will not avoid this. OCBC also charges higher LIR if quantum is below SGD 500k
— 30Y fixed rate .. https://www.investopedia.com/mortgage/mortgage-rates/fixed-versus-adjustable-rate/ explained the protection on borrowers during rate hikes. In other words, you lock in a low rate before you see any rate hike threat.
SG only has 3Y-fixed.