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Benchmark Administration

Effective 1 January 2017, ASX is the new Bank Bill Swap (BBSW) benchmark rate administrator. BBSW Methodologies and Transition of Calculation activities from AFMA to ASX can be read here:

New Calculation Methodologies
New BBSW Methodology - effective date TBC
New EOD BAB Methodology - effective 31 July 2017

ASX BBSW Trade and Trade Reporting Guidelines

ASX is seeking feedback from stakeholders on the proposed BBSW Trade and Trade Reporting Guidelines. The Guidelines have been written by ASX in consultation with the regulators and market particiapnts active in the bank accepted bill (bank bills) and negotiable certificates of deposit (NCDs) market.

Written submissions in response to the consultation paper are requested by Monday 7 August 2017.

About BBSW

BBSW is the primary short-term rate used in the financial markets for the pricing and valuation of Australian dollar securities and as a lending reference rate.  BBSW is currently calculated using a nationally observed best bid and best offer (NBBO) methodology for Prime Bank securities.

In late 2017, ASX intends to introduce a new BBSW calculation methodology – a volume weighted average price (VWAP) calculation as the primary calculation method.  The change in methodology will support the recommendation of the Council of Financial Regulators and reflects the evolution of market practice.

ASX also administers End of Day Bank Accepted Bills (EOD BABs).

ASX operates at the heart of Australia’s financial markets and is a core part of the interest rate complex.  With a history of successfully operating regulated markets, ASX is well positioned to administer the benchmark Australian interbank rate with integrity and high standards.

Read more here:

Public Announcements
ASX media releases and market updates


Current Conventions & Calculation Methodology
BBSW Conventions
Prime Bank Conventions
EOD BAB's Calculation Methodology


Information for Subscribers
Subscriber Order Forms
BBSW Guide
Subscriber Terms & Conditions
BBSW Schedule of Fees


Disclaimer BBSW


Contact information

General Enquiries

For general enquiries about the BBSW benchmark, please call ASX Customer Service on 131 279 (within Australia) or +612 9338 0000 (outside Australia).

Or click on the button below to send ASX Customer Service an email.

Email ASX Benchmarks

Feedback, Reporting Misconduct or Complaints

For any feedback, reporting of misconduct or any complaints about ASX, please submit the relevant form.

Click here for form


For any disputes specifically about the BBSW benchmark, please call +61 2 9227 0342 or click on the button below to send us an email.

Email ASX Pricing