CORRA compounded over 30 days

CORRADailySphera Credit estimate

Also shown on CORRA rate today

Series id

corra-avg-30d

Latest value

2.297%

As of October 2, 2026History since July 13, 2020

Source: Bank of Canada. Values marked as a Sphera Credit estimate are computed from Bank of Canada data.

Maintained by Sphera Credit

History

Source: Bank of Canada.

How this series is built

Definition

The annualized rate, in percent, from compounding CORRA daily over roughly the last 30 calendar days.

Source

Sphera Credit calculation from the Bank of Canada CORRA Compounded Index (series corra-index, Valet series CORRA.COMPOUNDED.INDEX).

Calculation

For each business day t with an index value, let s be the latest business day on or before t minus 30 calendar days. The value is (Index(t) / Index(s) - 1) * 365 / (t - s) * 100, where t - s is the number of calendar days between the two dates. This is the Bank of Canada's published formula for CORRA compounded between two dates, applied with start date s and end date t. Rounded to five decimal places.

Formula

(index(t) / index(s) - 1) * 365 / (t - s) * 100, where s is the latest business day on or before t - 30 days

Publication and dating

Daily on business days, dated like the index, and available once the Bank publishes the index at 11:30 ET. Because Index(t) includes CORRA up to the previous business day, the value dated t covers CORRA for the value dates from s up to the business day before t.

Caveats

  • The window is at least 30 calendar days, and a few days longer when t minus 30 days falls on a weekend or holiday, because s moves back to the previous business day.
  • It is a trailing reference average. It does not apply the lookback, lockout or payment conventions a loan agreement may specify, so check the agreement before using it to calculate interest.

Use this data

Use with your AI assistant

Connect Sphera Credit Data to your assistant once. It can then chart and analyze these series, and every value it quotes carries its source and date. The catalogue is open. Pulling a history asks you to sign in with your work email, and access is free.

Copy the prompt below and paste it into your AI assistant. The assistant adds the Sphera Credit Data connector for you, or walks you through the steps when it cannot.

Prompt for your AI assistant

Add the Sphera Credit Data MCP server to this assistant, so you can answer my questions with Canadian rate data from the Bank of Canada.

Server name: Sphera Credit Data
Server URL: https://data.spheracredit.com/mcp
Type: remote MCP server over HTTP with OAuth sign-in. It needs no API key.

More information about the tools, the data series and Sphera Credit is on this page:
https://www.spheracredit.com/en/resources/data/mcp
Browse it first, so you understand what Sphera Credit is and how this server helps me. If you cannot browse the web, continue without it.

I came from the page of the series CORRA compounded over 30 days (series id: corra-avg-30d). Once you are connected, start with this series.

Then follow these steps:
1. If you can add MCP servers yourself, add this one now. Tell me what you change.
   - Claude Code: claude mcp add --transport http sphera-data https://data.spheracredit.com/mcp
   - Codex: codex mcp add sphera-data --url https://data.spheracredit.com/mcp
   - Any other tool: use your own way to add a remote HTTP MCP server with the URL above.
2. If you cannot add it yourself, tell me how to add it in this app, one numbered step at a time, with the exact URL above. If you are not sure of the steps for this app, use the steps on the page above. Do not guess a different URL.
3. The first time you pull a rate history, a sign-in page opens. I sign in myself on that page. Do not enter my details or the emailed code for me.
4. When it is connected, call list_series to check that it works. Then tell me in two or three sentences what you can now do for me. Always give the source and the date of each value you quote.

Then ask: “Chart corra-avg-30d since 2024 and explain how it is calculated.”

MCP server documentation

Download or connect in Excel

Each series is a CSV file with a date column and a value column. In Excel, choose Data, then From Web, and paste the link. Refresh updates it to the latest values.

For information only. These are market reference rates. Each lender sets its own loan rates.