SONIA rates in 2021 Historical SONIA interest rates for the year 2021

This page shows a summary of the historic SONIA (Sterling Overnight Index Average) interest rates for 2021. The first table below shows the first, last, highest, lowest and average SONIA interest rate for the year 2021. If you look further down the page, you can find more information about the development of the SONIA interest rates over 2021.

Check the current SONIA interest rates

SONIA 2021
First
Last
Highest
Lowest
Average
SONIA
0.0479 %
0.1906 %
0.1938 %
0.0450 %
0.0547 %

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 2021.

SONIA Chart 2021

Historical SONIA rates in 2021
SONIA in 2021 - per month
First
Last
Highest
Lowest
Average
January
0.0479 %
0.0529 %
0.0529 %
0.0479 %
0.0494 %
February
0.0480 %
0.0512 %
0.0512 %
0.0480 %
0.0486 %
March
0.0488 %
0.0466 %
0.0497 %
0.0466 %
0.0486 %
April
0.0475 %
0.0509 %
0.0509 %
0.0475 %
0.0486 %
May
0.0496 %
0.0516 %
0.0516 %
0.0483 %
0.0495 %
June
0.0498 %
0.0466 %
0.0505 %
0.0466 %
0.0498 %
July
0.0496 %
0.0506 %
0.0510 %
0.0496 %
0.0506 %
August
0.0504 %
0.0502 %
0.0510 %
0.0498 %
0.0504 %
September
0.0503 %
0.0479 %
0.0509 %
0.0479 %
0.0500 %
October
0.0500 %
0.0503 %
0.0514 %
0.0481 %
0.0502 %
November
0.0477 %
0.0455 %
0.0483 %
0.0455 %
0.0468 %
December
0.0459 %
0.1906 %
0.1938 %
0.0450 %
0.1141 %