Australians are facing a substantial interest bill despite current official interest rates being significantly lower than historical peaks. This is due to the sheer size of mortgages held across the nation, which have ballooned in recent years. The total amount owed is so high that the overall interest paid exceeds levels seen when rates were close to 20 percent. This situation presents a challenging economic landscape for households, as smaller rate increases now translate to larger financial burdens. Experts suggest this highlights the vulnerability of Australian homeowners to even moderate interest rate adjustments. The data underscores the impact of increasing property values and larger loan amounts on household finances. This trend is raising concerns about potential future financial stress for many Australians.