ABS Co. – Benchmark Rates

ABS Benchmarks Administration Co Pte Ltd (“ABS Co.”) was setup on 13 June 2013, as a wholly owned subsidiary of The Association of Banks in Singapore (“ABS”), to own and administer the ABS Benchmarks in Singapore - the Singapore Interbank Offered Rate (“SIBOR”), the Swap Offer Rate (“SOR”), the SGD Spot FX and the THB Spot FX. ABS Co. also owns and administers the Fallback Rate (SOR).

Refinitiv (formerly known as Thomson Reuters) is the appointed Calculation Agent for the above-mentioned ABS Benchmarks.

ABS Co. was formally licensed on 15 April 2020 by the Monetary Authority of Singapore (“MAS”) as an Authorised Benchmark Administrator to carry on the business of administering the designated benchmarks, SIBOR and SOR. The notification in the Government Gazette may be accessed at www.egazette.com.sg and may also be viewed here.


SIBOR is the rate at which an individual Contributor Bank could borrow funds, were it to do so by asking for and then accepting the interbank offers in reasonable market size, just prior to 11:00 a.m. Singapore time.

SOR is the synthetic rate for deposits in Singapore Dollars (“SGD”), which represents the effective cost of borrowing SGD synthetically by borrowing US Dollars (“USD”) for the same maturity, and swap out the USD in return for the SGD.

Calculation Methodology

SIBOR is calculated in accordance with the Calculation Methodology for SIBOR. The published rate in respect of each tenor is the trimmed arithmetic mean of Contributor Banks’ contributions in respect of that tenor, rounded to the nearest five decimal places. The contributed rates will be ranked in order, the top and bottom quartiles will be trimmed, with the remaining rates averaged arithmetically. Each Contributor Bank's contribution carries an equal weight in the calculation, subject to the trimming.

Details are shown in the table below:

Number of SIBOR Contributor Banks Number of Contributed Rates Trimmed
Number of Contributed Rates Trimmed
Number of Contributed Rates Remaining
(Arithmetically Averaged)
9 2 2 5
10 3 3 4
11 3 3 5
12 3 3 6
13 3 3 7
14 4 4 6
15 4 4 7

will be the last day of publication for 1M and 3M SIBOR as announced in ABS-SFEMC and SC-STS’ December 2020 response paper.

will be the last day of publication for SOR across all tenor settings, following the UK Financial Conduct Authority’s announcement in March 2021 that the overnight, 1-month, 3-month, 6-month and 12-month USD LIBOR settings, which are used in SOR, would cease to be provided by any administrator or be no longer representative immediately after 30 June 2023.

was the last day of publication for the 6M SIBOR. This follows ABS-SFEMC and SC-STS’ December 2020 response paper that set out plans to discontinue all remaining tenors of SIBOR in a few years, starting with the 6M SIBOR in 2022, and the 1M and 3M SIBOR by 31 December 2024.

was the last day of publication for the 12M SIBOR. The 12M SIBOR was discontinued due to low market usage and the lack of underlying transactions underpinning this benchmark tenor, as mentioned in the July 2018 “Response to Feedback Received from the Consultation Paper on the Evolution of SIBOR”.

Fallback Rate (SOR) is the primary fallback rate that will first apply upon the discontinuation of SOR after 30 June 2023. Similar to SOR, Fallback Rate (SOR) is an FX-implied rate based on actual qualifying transactions in the USD/SGD FX swap market reported by Reporting Brokers and a USD interest rate.

The final Fallback Rate (SOR) publication date for each tenor is the date corresponding to an Original SOR Rate Record Day of 31 December 2024 for that tenor, as projected in the table below:

Projected Last Date of Fallback Rate (SOR) Publication
Tenor Original SOR Rate Record Day Publication Date
Overnight 31 December 2024 2 January 2025
1-month 28 January 2025
3-month 1 April 2025
6-month 1 July 2025

Codes of Conduct for SIBOR and SOR

The respective Codes of Conduct for SIBOR and SOR are effective as of 15 April 2020.

Publication of 7-day delayed SIBOR and SOR data

From 1 October 2015, the rates will be published on the ABS website 7 calendar days delayed from the original publication date and time. Click here to view the rates.

Real-time SIBOR and SOR data to be fee-liable from 1 October 2015

SIBOR and SOR data usage fees were introduced on 1 October 2015 where subscribers who receive real-time SIBOR and/or SOR data from a market data vendor are required to pay the associated data fees. SIBOR and SOR data delayed by 24-hours or more will be available for free to end users of a market data vendor.

From July 2019, the SIBOR and SOR data usage fees were increased and all user subscribing to real-time SOR are also required to subscribe to real-time Intercontinental Exchange London Interbank Offered Rate (“ICE LIBOR”) end user licence to ensure continuity of all SOR fixing real time service i.e. real-time SOR, real-time SGD spot reference rate and real-time SGD forward points. More information can be found in the Data Fees & FAQ document below.

Please contact ABS Co at absCo@abs.org.sg or +65 6224-4300 for more information