Observations

2026-09-18: 3.750

Updated: Sep 22, 2026 5:02 AM CDT

Units:

Percent,

Not Seasonally Adjusted

Frequency:

Daily

Notes

Title	Release Dates

Daily Sterling Overnight Index Average (SONIA) Rate: 90th percentile	2021-07-28	2026-09-22

Source

Bank of England	2021-07-28	2026-09-22

Release

SONIA Interest Rate Benchmark	2021-07-28	2026-09-22

Units

Percent	2021-07-28	2026-09-22

Frequency

Daily	2021-07-28	2026-09-22

Seasonal Adjustment

Not Seasonally Adjusted	2021-07-28	2026-09-22

Notes

The Sterling Overnight Index Average (SONIA) is the interest rate applied to bank transactions in the British Sterling Market during off hours. This series represents the SONIA rate occurring at the 90th percentile of volume. For more information, please visit the Bank of England's explication on the key features and policies of SONIA. (https://www.bankofengland.co.uk/statistics/details/further-details-about-wholesale-interbank-sterling-market-data/)	2021-07-28	2026-09-22

Daily Sterling Overnight Index Average (SONIA) Rate: 90th percentile (IUDZLS9)