Tokyo Overnight Average Rate

Tokyo Overnight Average Rate
Name	Tokyo Overnight Average Rate
Abbreviation	TOAR
Currency	Japanese yen
Published by	Bank of Japan
Inception	2016
Frequency	Daily
Tenor	Overnight
Website	Bank of Japan

Tokyo Overnight Average Rate.

The Tokyo Overnight Average Rate is a short-term unsecured interest rate reflecting overnight transactions in the Tokyo interbank market. It serves as a benchmark for yen liquidity, influences pricing in money markets such as the Japan Securities Clearing Corporation-cleared repo market, underpins instruments traded on the Tokyo Stock Exchange and interacts with policy operations conducted by the Bank of Japan and fiscal operations of the Ministry of Finance (Japan).

Overview

TOAR measures the volume-weighted average of unsecured overnight call rate trades among financial institutions in Tokyo. It relates to other Japanese benchmarks such as the Tokyo Interbank Offered Rate and interacts with instruments cleared through the Japan Securities Depository Center (JASDEC), the Financial Services Agency (Japan), and the settlement infrastructure operated by the Japan Securities Clearing Corporation. Market participants include commercial banks like Mizuho Financial Group, MUFG Bank, Sumitomo Mitsui Banking Corporation, trust banks like Sumitomo Trust and Banking Co., foreign branches of HSBC, Citibank Japan, and nonbank lenders such as Nomura Securities and Daiwa Securities Group.

Calculation and Methodology

The rate is calculated from reported transactions executed in Tokyo money markets, collated by the Bank of Japan which publishes the indicator. Data sources include trade reporting from electronic platforms such as Japan Financial Exchange-linked systems, voice-brokered trades captured by firms like ICAP and TP ICAP, and clearing records from Japan Securities Clearing Corporation. Methodology steps mirror international practices seen in benchmarks like Secured Overnight Financing Rate and SONIA: cleanse outliers, apply trimming rules, and compute a volume-weighted mean. Historical reference methods were debated in committees including representatives from the Bank for International Settlements and the Financial Stability Board, drawing on recommendations endorsed by the Organisation for Economic Co-operation and Development and inputs from major market makers like Goldman Sachs and J.P. Morgan.

Market Role and Uses

Market participants use the rate for overnight funding benchmarks, collateral valuation, and pricing of derivatives cleared through infrastructures such as the Osaka Exchange and the Japan Securities Clearing Corporation. It is referenced in cash instruments issued by institutions including Japan Post Bank, Resona Holdings, Shinsei Bank, and corporate treasuries like Toyota Motor Corporation, Sony Group Corporation, and Mitsubishi Heavy Industries. Asset managers at firms such as Nomura Asset Management and BlackRock (Japan) use the rate for liquidity management and performance measurement, while hedge funds registered with the Japan Financial Services Agency use it for basis trading. Central bank operations by the Bank of Japan—including open market operations and standing facilities—use the rate as a benchmark for liquidity provision alongside international coordination with the Federal Reserve and the European Central Bank when conducting swap lines or joint exercises.

Historical Trends and Notable Events

Since its formal introduction following reforms after the 2008 financial crisis, the rate has reflected policy shifts such as the Bank of Japan's quantitative easing programs and the adoption of negative interest rate policy announced in January 2016. Notable episodes include volatility during the COVID-19 pandemic market stress in 2020, episodes coinciding with 2011 Tōhoku earthquake and tsunami-related market dislocations, and liquidity strains during the Lehman Brothers collapse era that prompted global benchmark reforms. Transitional arrangements were influenced by international projects like the International Organization of Securities Commissions consultations and the Financial Stability Board’s benchmark reform program, with technical input from market bodies including the Japan Securities Dealers Association and the Asia Securities Industry & Financial Markets Association.

Regulatory and Institutional Framework

Oversight involves the Bank of Japan as publisher and overseer, with supervisory inputs from the Financial Services Agency (Japan). Benchmark governance adheres to principles articulated by the International Organization of Securities Commissions and standards influenced by the Financial Stability Board. Market conduct rules are enforced via the Japan Exchange Group and reporting obligations under rules administered by the Ministry of Finance (Japan) and the National Diet (Japan)-level legislative framework. Industry working groups including representatives from Nomura Holdings, Dai-ichi Life Insurance Company, Japan Post Insurance, and global banks such as Deutsche Bank and BNP Paribas advise on methodology and operational resilience.

Comparison with Other Overnight Rates

TOAR can be compared with global overnight benchmarks like SONIA (Sterling Overnight Index Average), SOFR (Secured Overnight Financing Rate), ESTR (Euro Short-Term Rate), and TONAR (Tokyo Overnight Average Rate alternative frameworks). It differs from LIBOR in being transaction-based rather than survey-based, and from repo-based benchmarks like SOFR by focusing on unsecured transactions similar to SONIA. Cross-currency liquidity management links TOAR to rates observed in markets overseen by the Federal Reserve, European Central Bank, Bank of England, and regional counterparts such as the Reserve Bank of Australia and the Monetary Authority of Singapore.

Category:Interest rates