Value of the effective interest rate (EIR) for the organization’s most representative loan product during the reporting period.
Organizations should footnote all assumptions used.
This metric is intended to capture the effective interest rate (EIR), a figure that converts all financial costs to the borrower for a loan into a single declining-balance interest calculation. It includes the effects of interest rates (whether calculated on a flat or declining basis), payment schedules, commissions, fees, discounting, and compensating balances.
For guidance on calculating EIR, organizations should refer to the tool created by the MFTransparency Organization (http://www.mftransparency.org/pages/ctp-tool/).
June 2022 - IRIS v5.3 Released (current version)
Immaterial change. Minor revisions to definition and usage guidance for clarity.
January 2020 - IRIS v5.1 Released
No change.
May 2019 - IRIS v5.0 Released
No change.
March 2016 - IRIS v4.0 Released
No change.
March 2014 - IRIS v3.0 Released
Material change. Metric definition modified to provide clarity based on best practices via the Microfinance Information Exchange (MIX).
November 2011 - IRIS v2.2 Released
No change.
February 2011 - IRIS v2.1 Released
No change.
September 2010 - IRIS v2.0 Released
Immaterial change. IRIS ID changed due to framework upgrade. Minor revision to definition language for clarity.
September 2009 - IRIS v1.0 Released
New metric. Effective Interest Rate (M23.1) was developed via the Original IRIS Working Group.
IRIS Metrics Work Better in Sets
To use IRIS metrics—and the resulting data—to understand impact performance, IRIS metrics should be used and analyzed in generally accepted sets and according to well-defined objectives. IRIS+ gives you access to generally accepted Core Metrics Sets aligned to common Impact Themes and Sustainable Development Goals (SDGs).