After kicking the day off in positive territory, the S&P/ASX 200 Index (ASX: XJO) traded close to flat for much of Tuesday.
At 2:30pm AEDT, the benchmark Aussie index was back up just under 0.2% at 8,598.7 points.
That's when the Reserve Bank of Australia (RBA) reported its latest interest rate decision. The benchmark index initially gained on the decision, before retracing to 8,596.1 points, still up around 0.2% for the day.
As you're likely aware, on 3 February, at its first meeting of 2026, the RBA increased the official cash rate by 0.25% to 3.85% amid concerns over resurgent inflation.
That marked the first time ASX 200 investors were faced with an interest rate hike since November 2023, when the RBA lifted rates to 4.35%. The central bank then cut rates by 0.25% three times in 2025.
Today, the RBA announced its second interest hike of the year.
With market expectations of another rate increase at around 60% this morning, ASX 200 investors look to be taking the news in stride.
Here's why the RBA opted to lift interest rates again today.
Image source: Getty Images
ASX 200 steady as RBA hikes interest rates
The RBA reported that it decided to increase the cash rate target by another 0.25%, bringing Australia's official interest rate to 4.10%.
"While inflation has fallen substantially since its peak in 2022, it picked up materially in the second half of 2025," the board said.
Some of those inflationary pressures that see ASX 200 investors facing higher interest rates remain on the domestic front, driven by stronger-than-expected growth in domestic demand.
"Information since the February meeting suggests that some of the increase in inflation reflects greater capacity pressures," the RBA noted.
The central bank also pointed to surging global energy prices fuelled by the United States and Israel's war with Iran as potentially driving broader price increases.
"In addition, the conflict in the Middle East has resulted in sharply higher fuel prices, which, if sustained, will add to inflation. Short-term measures of inflation expectations have already risen."
And ASX 200 investors and mortgage holders alike would do well to prepare for higher rates for longer.
"The board judged that there is a material risk that inflation will remain above target for longer than previously anticipated," its members revealed.
All told, markets are facing plenty of uncertainty.
According to the RBA:
Globally, the conflict in the Middle East poses substantial risks in both directions. A longer or more severe conflict could put further upward pressure on global energy prices; this will push up near-term inflation and could also increase inflation further out if it impairs supply capacity or price rises get built into longer term inflation expectations.
Higher prices and prolonged uncertainty may cause growth to be lower in Australia's major trading partners and also in Australia.
Unlike the recent unanimous decisions, five board members voted to lift the cash rate today, while four voted to keep it on hold.
Despite the higher rate environment, the ASX 200 has gained 9.5% over the past year.
