Cash Rate History: Where 4.35% Really Sits

Key takeaways

• The RBA has targeted the cash rate since 1990, when it was in the high teens.
• The 2020-21 record low of 0.10% was an emergency setting, not a baseline.
• Anchoring on the rate you first borrowed at distorts judgement about "normal".
• What matters for affordability is rate times debt, and debt is far larger now.

What does the long record look like?

Approximate ranges, from RBA statistical tables. Use them for orientation rather than precision.

Seen this way, 4.35% is unremarkable. It is close to where the cash rate spent much of the 1990s and 2000s, and well below where it began.

So why does it feel so much worse?

Three reasons, and all of them are real rather than psychological.

Debt is much larger relative to income. A 7% rate on a mortgage worth three times household income costs less than a 4.35% rate on one worth six times income. The rate is not the burden - the interest bill is, and that is rate multiplied by debt.

The change was fast. Households that borrowed at 2% and now pay above 6% experienced a repayment increase in under two years. The absolute level matters less than the speed of adjustment when budgets are already committed.

Expectations were anchored low. Anyone who first borrowed between 2012 and 2021 formed their sense of normal during the outlier decade. That is not a failure of judgement; it is how anchoring works.

What is the practical lesson?

Do not build a financial plan around the rate you happen to have borrowed at.

• Stress test at a materially higher rate, not at today's. The 3.0 percentage point buffer lenders apply is a reasonable minimum for your own modelling.
• Treat very low rates as temporary when they occur, and use them to reduce principal rather than to increase borrowing.
• Judge fixed rates against the long record, not against the rate you had last year.
• Remember debt-to-income is the variable you control. You cannot choose the rate; you can choose the multiple.

None of this predicts where rates go next. The point of history here is not forecasting - it is calibration.

Frequently asked questions

What is the highest the Australian cash rate has been?

Since the RBA began targeting the cash rate in 1990, it started in the high teens and fell sharply through the early 1990s. RBA statistical tables carry the full official series.

What was the lowest cash rate in Australian history?

0.10%, set in November 2020 as an emergency pandemic setting and held into 2021. It was the lowest on record and was explicitly a crisis measure rather than a normal level.

Is 4.35% a high interest rate historically?

No, it sits close to where the cash rate spent much of the 1990s and 2000s. It feels high because household debt relative to income is far larger now, and because it followed a decade of exceptionally low rates.

Will rates return to 2%?

Nobody knows, and anyone stating it confidently is guessing. What the record suggests is that the 2011-2021 period was unusual, so planning on a return to it is a weak basis for a 30-year commitment.

Related reading

• The 2026 Rate Reversal: How Three Hikes Undid a Year of Cuts
• Household Debt at 190% of Income: How Australia Compares
• The Neutral Rate (r*): Why Estimates Disagree

Sources

• Statistical tables - cash rate target — Reserve Bank of Australia
• Household debt statistics — Australian Bureau of Statistics