We’re approaching the end of Q1 2026 and the RBA has provided enough data points over the past three months to draw some meaningful conclusions about the rate-AUD relationship this year. The picture isn’t as straightforward as the “rates up, AUD up” framework that many traders still default to.

Let me walk through what’s actually happened and what it implies for positioning into Q2.

The Q1 Timeline

The RBA entered 2026 with the cash rate at 3.85%, having cut twice in the second half of 2025 from the 4.35% peak. Market pricing at the start of January implied two more cuts by mid-2026, taking the rate to 3.35%.

The February meeting delivered a hold, as expected. But the statement language shifted in a way that caught attention. The phrase “inflation is moving sustainably toward target” was softened to “progress on inflation has been encouraging but uneven.” That single word change - “uneven” - repriced rate expectations meaningfully.

The March meeting, held last week, also delivered a hold. The RBA acknowledged that underlying inflation (trimmed mean at 3.1% in the latest print) remained above the 2-3% target band, and signalled patience rather than urgency on further easing.

How AUD/USD Responded

Here’s where it gets interesting. AUD/USD started the year at 0.6230. After the February hold, it drifted to 0.6180 - a modest decline reflecting reduced rate cut expectations being a secondary factor against broader USD strength.

But after the March hold, AUD/USD rallied to 0.6340. Same outcome (hold), similar language, different market reaction. Why?

The answer lies in relative rate expectations. Between February and March, the US economic data deteriorated noticeably. US ISM manufacturing dipped below 50, initial jobless claims trended higher, and the February non-farm payrolls headline missed expectations. Fed rate cut expectations expanded from two cuts to three for 2026.

The RBA holding firm while Fed cut expectations increased meant the interest rate differential outlook shifted in AUD’s favour. Not because Australian rates went up, but because the market repriced US rates down.

The Differential Is What Matters

This is the Q1 lesson that matters most: AUD/USD doesn’t respond to RBA policy in isolation. It responds to the differential between RBA and Fed rate paths.

In absolute terms, the RBA’s rate path hasn’t changed dramatically this quarter. Markets still expect one to two cuts in the second half of 2026. But the Fed’s expected path has shifted more, creating a relative tightening of Australia’s monetary stance without the RBA doing anything.

Running the numbers: the Australia-US 2-year government bond spread started Q1 at -85 basis points (Australia yielding less than the US). It’s now at -55 basis points. That 30bp compression in the spread correlates closely with the AUD/USD rally from 0.6230 to 0.6340.

Inflation Data Remains the Key Variable

For traders looking ahead, the most important data releases for AUD aren’t the RBA meetings themselves - they’re the inflation prints that determine what the RBA does next.

The Q4 2025 CPI data (released in January) showed headline inflation at 2.8% - within the target band. But trimmed mean at 3.1% remained above target. The monthly CPI indicator for January, released in late February, showed a slight uptick.

This mixed inflation picture is what’s keeping the RBA cautious. If trimmed mean inflation trends back toward 3.0% or below, rate cuts resume and AUD faces downward pressure (all else equal). If it stays sticky above 3%, the RBA stays on hold and the AUD benefits from rate differential support - especially if the Fed is cutting.

The next critical data point is the Q1 2026 CPI release in late April. That single print will likely determine whether the RBA cuts at its May meeting or extends the hold. It’s the most important event on the AUD calendar for Q2.

Market Positioning Tells a Story

Commitment of Traders data shows speculative positioning in AUD futures shifted from net short at the start of Q1 to roughly neutral by mid-March. That’s a significant change in positioning and suggests the rally from 0.6230 to 0.6340 has been driven by short covering rather than aggressive new longs.

This matters because short covering rallies have natural limits. Once the short base is cleared, you need fresh buying interest to push higher. For AUD/USD to break above 0.6400, we’d likely need either a material shift in US data (worse), a hawkish surprise from the RBA, or a significant Chinese stimulus announcement.

Scenarios for Q2

Bull case (AUD/USD 0.6450-0.6550): US economic weakness accelerates, Fed signals more aggressive cutting, Australian trimmed mean inflation stays above target keeping RBA on hold. Rate differential compression drives AUD higher.

Base case (AUD/USD 0.6250-0.6400): US economy stabilises, Fed cuts once in Q2, RBA cuts once in the second half. Differential remains roughly stable, AUD trades in a range.

Bear case (AUD/USD 0.6050-0.6200): Global risk-off event (trade war escalation, geopolitical shock), commodity prices weaken, AUD suffers from both risk sentiment and terms of trade deterioration. RBA cuts add to downward pressure.

Trading Implications

The practical approach for Q1’s remaining weeks and into Q2: focus on the differential rather than individual central bank actions.

Track the AU-US 2-year spread daily. When it compresses (moves in Australia’s favour), buy AUD/USD dips. When it widens, sell rallies.

Position lightly ahead of the April CPI print - it’ll determine the next 3-6 months of RBA policy and by extension, AUD direction. That’s the Q2 trade that matters most.

Q1 has been a reminder that forex isn’t about predicting what one central bank does. It’s about predicting the gap between two of them.