This page provides monthly data & forecasts of the Sterling Overnight Index Average (SONIA), a U.K. interest rate benchmark published by the Bank of England. SONIA is a the dominant rate benchmark used for GBP-denominated assets and is calculated via an average of interbank unsecured overnight loans between U.K. financial institutions.
Historical data and forecasted values on this page reflect monthly averages of daily values.
PRIMARY FORECAST MODEL
Our market consensus forecast is a daily-updated forecast of key benchmark interest rates. It is generated primarily using yield data and futures market prices, using minimal theoretical assumptions. Forecasts from the model can be interpreted as the median expectation of market participants.
The SONIA component of the forecast is extracted from SONIA futures with 1 and 3-month tenors and a model derived term premium. See the riskless rate extraction process in the model documentation for details.
While the model prioritizes consistency with market expectations over forecast accuracy, its forecast accuracy has historically exceeded that of survey and agency-based forecasts due to its higher update frequency and timeliness. Prior forecast values are available below.
The model is updated daily between 9:30-10:00 ET (13:30/14:30 UTC) with the prior day's data. This uses the prior day's futures prices, generally at a 3pm ET settlement time.
Each colored line represents a forecast generated on a single date. Click a date on the chart legend to add or remove a forecast. The most recent forecast as well as the first forecast of each month are available.
The grey line shows realized (actual) values of the variable†.
† If the date is for the current period, this value represents an average of data available so far.
ROLLING PREDICTION HISTORIES
Pulling data...
Each colored line represents forecasts over time for a single target period. Click a date on the chart legend to change the target date. The most recent forecast as well as the first forecast of each month are available.
The grey line shows realized (actual) values of the variable. Thus, the difference between the grey line and the forecast line represents how much the variable is forecasted to change between the time the forecast was made and the target date. For forecasts whose target dates have already arrived, the ✕ indicator displays the realized value of the target forecast†.
† If the date is for the current period, this value represents an average of data available so far.