SONIA rates in 2023 Historical SONIA interest rates for the year 2023

This page shows a summary of the historic SONIA (Sterling Overnight Index Average) interest rates for 2023. The first table below shows the first, last, highest, lowest and average SONIA interest rate for the year 2023. If you look further down the page, you can find more information about the development of the SONIA interest rates over 2023.

Check the current SONIA interest rates

SONIA 2023
First
Last
Highest
Lowest
Average
SONIA
3.4269 %
5.1869 %
5.1889 %
3.4267 %
4.6113 %

SONIA interest rates are administered and published by The Bank of England. The Bank of England publishes SONIA data under Open Government Licence (nationalarchives.gov.uk). Use of the data is at your own risk.

Additional information

You will find a chart and a table below with additional information about the development of the SONIA interest rates for each month in 2023.

SONIA Chart 2023

Historical SONIA rates in 2023
SONIA in 2023 - per month
First
Last
Highest
Lowest
Average
January
3.4269 %
3.4269 %
3.4281 %
3.4267 %
3.4275 %
February
3.4268 %
3.9270 %
3.9275 %
3.4268 %
3.9021 %
March
3.9270 %
4.1777 %
4.1777 %
3.9268 %
4.0031 %
April
4.1769 %
4.1792 %
4.1792 %
4.1767 %
4.1774 %
May
4.1792 %
4.4278 %
4.4285 %
4.1775 %
4.3528 %
June
4.4278 %
4.9286 %
4.9286 %
4.4278 %
4.5872 %
July
4.9290 %
4.9304 %
4.9315 %
4.9290 %
4.9302 %
August
4.9307 %
5.1852 %
5.1859 %
4.9304 %
5.1609 %
September
5.1852 %
5.1867 %
5.1867 %
5.1847 %
5.1854 %
October
5.1868 %
5.1861 %
5.1880 %
5.1861 %
5.1871 %
November
5.1865 %
5.1881 %
5.1889 %
5.1864 %
5.1875 %
December
5.1886 %
5.1869 %
5.1886 %
5.1858 %
5.1870 %