BBSY & BBSW Swap Rates Today: Current & Historic AUD Swaps
Current 6M BBSW swap rates with 1 week, 1 month and 1 year history (*tenors referencing 3M BBSW).
Last update:
| Tenor | Live | Yesterday09 Jul 2026 | 1 week ago01 Jul 2026 | 1 month ago08 Jun 2026 | 1 year ago08 Jul 2025 |
|---|---|---|---|---|---|
| BBSW 6M Swap Rate | 4.75% | 4.79% | 4.87% | 3.75% | |
| BBSW 4 Year Swap Rate | 4.68% | 4.66% | 4.80% | 3.64% | |
| BBSW 5 Year Swap Rate | 4.71% | 4.67% | 4.82% | 3.73% | |
| BBSW 7 Year Swap Rate | 4.80% | 4.75% | 4.89% | 3.94% | |
| BBSW 10 Year Swap Rate | 4.95% | 4.88% | 5.00% | 4.19% | |
| BBSW 15 Year Swap Rate | 5.09% | 5.03% | 5.14% | 4.42% | |
| BBSW 20 Year Swap Rate | 5.13% | 5.07% | 5.17% | 4.52% | |
| BBSW 30 Year Swap Rate | 5.08% | 5.01% | 5.09% | 4.47% | |
Rates built from interdealer broker and exchange quotes. Read how we build these rates.
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// Excel: live 6M BBSW swap rate in a cell =BlueGamma.SWAP_RATE("6M BBSW", start_date, maturity_date, "1Y") # API: the same rate, one GET away GET api.bluegamma.io/v1/swap_rate ?index=6M BBSW&start_date=2D&maturity_date=5Y x-api-key: your_api_key
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BBSY Swap Rates Today
Current 6M BBSY swap rates with 1 week, 1 month and 1 year history (*tenors referencing 3M BBSY).
Last update:
| Tenor | Live | Yesterday09 Jul 2026 | 1 week ago01 Jul 2026 | 1 month ago08 Jun 2026 | 1 year ago08 Jul 2025 |
|---|---|---|---|---|---|
| BBSY 6M Swap Rate | 4.80% | 4.84% | 4.92% | 3.80% | |
| BBSY 4 Year Swap Rate | 4.73% | 4.71% | 4.85% | 3.69% | |
| BBSY 5 Year Swap Rate | 4.76% | 4.72% | 4.87% | 3.78% | |
| BBSY 7 Year Swap Rate | 4.85% | 4.80% | 4.94% | 3.99% | |
| BBSY 10 Year Swap Rate | 5.00% | 4.93% | 5.05% | 4.24% | |
| BBSY 15 Year Swap Rate | 5.14% | 5.08% | 5.19% | 4.47% | |
| BBSY 20 Year Swap Rate | 5.18% | 5.12% | 5.22% | 4.57% | |
| BBSY 30 Year Swap Rate | 5.13% | 5.06% | 5.14% | 4.52% |
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BBSW vs BBSY, what's the difference?
BBSW
BBSW is the primary short-term interest rate benchmark in Australia, administered by the ASX. It represents a mid-rate derived from real transactions (where available) or executable bid/offer quotes in the prime bank bill market, for standard maturities of 1–6 months.
The ASX calculates BBSW using a regulated “waterfall” methodology. The RBA monitors and relies on BBSW as part of the broader benchmark reform process and monetary policy transmission.
BBSY
BBSY (Bank Bill Swap Yield) refers to the published “Bid” and “Ask” rates set at fixed spreads around the BBSW mid-rate. The “Bid” is below BBSW and the “Ask” is above, with the spreads specified by the ASX benchmark conventions.
In practice, BBSY (particularly the “Ask” side) is often used as the reference rate in corporate loans and floating-rate notes, as it better reflects the rate a borrower pays compared to the BBSW mid-rate.
AONIA Swap Rates
AONIA (AUD Overnight Index Average) is the RBA cash-rate benchmark behind AUD overnight index swaps. Current AONIA swap rates with 1 week, 1 month and 1 year history.
Last update:
| Tenor | Live | Yesterday09 Jul 2026 | 1 week ago01 Jul 2026 | 1 month ago08 Jun 2026 | 1 year ago08 Jul 2025 |
|---|---|---|---|---|---|
| AONIA 1M Swap Rate | 4.36% | 4.36% | 4.36% | 3.84% | |
| AONIA 3M Swap Rate | 4.41% | 4.40% | 4.42% | 3.70% | |
| AONIA 6M Swap Rate | 4.48% | 4.47% | 4.51% | 3.53% | |
| AONIA 1 Year Swap Rate | 4.55% | 4.53% | 4.63% | 3.34% | |
| AONIA 2 Year Swap Rate | 4.46% | 4.44% | 4.58% | 3.24% | |
| AONIA 3 Year Swap Rate | 4.42% | 4.38% | 4.53% | 3.23% | |
| AONIA 4 Year Swap Rate | 4.42% | 4.37% | 4.52% | 3.31% | |
| AONIA 5 Year Swap Rate | 4.45% | 4.40% | 4.54% | 3.40% | |
| AONIA 7 Year Swap Rate | 4.56% | 4.49% | 4.62% | 3.63% | |
| AONIA 10 Year Swap Rate | 4.72% | 4.64% | 4.76% | 3.88% | |
| AONIA 15 Year Swap Rate | 4.89% | 4.80% | 4.90% | 4.11% | |
| AONIA 20 Year Swap Rate | 4.93% | 4.84% | 4.93% | 4.19% | |
| AONIA 30 Year Swap Rate | 4.84% | 4.74% | 4.81% | 4.11% |
Download current and historic rates in Excel
FAQs
BBSW is the bank bill benchmark fixing administered by the ASX and published each Sydney business day. The table above shows today's swap rates referencing BBSW, updated daily, with live rates available in the BlueGamma app.
BBSW is the mid-rate benchmark for Australian bank bills. BBSY is quoted as bid and ask rates at fixed spreads around that mid; the BBSY ask is what most corporate loans and floating-rate notes reference, so borrowers typically pay BBSY rather than BBSW. Australian fixed mortgage rates are also priced off these swap rates.
The rates on this page refresh daily. Live intraday BBSY and BBSW swap rates for every tenor are available in the BlueGamma app with a free 14-day trial.
More on BBSW & AONIA
AUD Forward Curve
BBSW forward curve: where the market prices AUD rates going next.
AONIA Forward Curve
Where the market prices AONIA going next: the full AUD forward curve.
More from BlueGamma
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