Indicative TSRR

FTSE Russell launched the FTSE Indicative Term SONIA Reference Rates (FTSE TSRRs) in July 2020 and has decided to discontinue their production. FTSE Russell is therefore withdrawing the FTSE TSRR service from the website. The daily FTSE TSRRs as well as all other supporting material will cease to be accessible, effective 4 June 2021.

As part of the integration of London Stock Exchange Group and Refinitiv, the Refinitiv Term SONIA rate will continue to be published and developed. Refinitiv Term SONIA was launched on 11 January 2021 following market discussions and a prototype rate in 2020.

More information on the Refinitiv Term is available here.

Indicative Term SONIA Reference Rates (FTSE TSRRs) are forward-looking term risk-free rates for the Sterling market covering 1 month, 3 month, 6 month and 12 month tenors.

FTSE TSRRs have been developed by FTSE Russell, part of London Stock Exchange Group (LSEG), in partnership with leading inter-dealer brokers in support of industry-wide efforts to transition away from LIBOR.


The “SONIA” mark is used under licence from the Bank of England (the benchmark administrator of SONIA), and the use of such mark does not imply or express any approval or endorsement by the Bank of England. “Bank of England” and “SONIA” are registered trade marks of the Bank of England.

Index rules should be read in conjunction with supportingFTSE Russell noticesThese notices advise of advance changes in index methodology, which may not be reflected in index rules until the change effective date. The notices may also communicate revisions in index treatment in the period up to a rule change.