On 2 September 2026, the Reserve Bank lifted the official cash rate 25 basis points to 2.75%. Within a day, ANZ, ASB, BNZ, Westpac and Kiwibank had passed the full 25 points onto floating mortgage rates. Savers were offered as little as 5 basis points, and in BNZ's case, nothing at all. If you're carrying a mortgage on a rental, that's a real cost increase you absorbed in under 24 hours — while the bank...